Custom detekt rule for logger usage check

Check if logger invocations don't use unoptimal invocations, eg.
concatenation `debug("a=" + a)` instead of lambda use `debug {"a=" + a}`

Unfortunately to avoid defining dependencies in many places and having
circural dependencies it was necessarry to reorganize the maven module
structure. The goal was to have `sources` module with production code and
`build` module with build-time tooling (detekt rules among them).

Issue-ID: DCAEGEN2-1002
Change-Id: I36e677b98972aaae6905d722597cbce5e863d201
Signed-off-by: Piotr Jaszczyk <piotr.jaszczyk@nokia.com>

157 files changed, 11901 insertions, 0 deletions

diff --git a/sources/hv-collector-core/pom.xml b/sources/hv-collector-core/pom.xml
new file mode 100644
index 00000000..7f7922e1
--- /dev/null
+++ b/sources/hv-collector-core/pom.xml
@@ -0,0 +1,137 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-core</artifactId>
+    <description>VES HighVolume Collector :: Core</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+            <plugin>
+                <groupId>org.jacoco</groupId>
+                <artifactId>jacoco-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-ssl</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-utils</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-health-check</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-domain</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-test-utils</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-reflect</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor.addons</groupId>
+            <artifactId>reactor-extra</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor.netty</groupId>
+            <artifactId>reactor-netty</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor.kafka</groupId>
+            <artifactId>reactor-kafka</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>javax.json</groupId>
+            <artifactId>javax.json-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish</groupId>
+            <artifactId>javax.json</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/boundary/adapters.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/boundary/adapters.kt
new file mode 100644
index 00000000..dd0111bc
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/boundary/adapters.kt
@@ -0,0 +1,50 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.boundary
+
+import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import reactor.core.publisher.Flux
+
+interface Sink {
+    fun send(messages: Flux<RoutedMessage>): Flux<RoutedMessage>
+}
+
+interface Metrics {
+    fun notifyBytesReceived(size: Int)
+    fun notifyMessageReceived(size: Int)
+    fun notifyMessageSent(topic: String)
+}
+
+@FunctionalInterface
+interface SinkProvider {
+    operator fun invoke(config: CollectorConfiguration): Sink
+
+    companion object {
+        fun just(sink: Sink): SinkProvider =
+                object : SinkProvider {
+                    override fun invoke(config: CollectorConfiguration): Sink = sink
+                }
+    }
+}
+
+interface ConfigurationProvider {
+    operator fun invoke(): Flux<CollectorConfiguration>
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/boundary/api.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/boundary/api.kt
new file mode 100644
index 00000000..3c85a9b1
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/boundary/api.kt
@@ -0,0 +1,38 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.boundary
+
+import arrow.core.Option
+import arrow.effects.IO
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import org.onap.dcae.collectors.veshv.utils.ServerHandle
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+
+interface Collector {
+    fun handleConnection(alloc: ByteBufAllocator, dataStream: Flux<ByteBuf>): Mono<Void>
+}
+
+typealias CollectorProvider = () -> Option<Collector>
+
+interface Server {
+    fun start(): IO<ServerHandle>
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/factory/CollectorFactory.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/factory/CollectorFactory.kt
new file mode 100644
index 00000000..5c96e1c5
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/factory/CollectorFactory.kt
@@ -0,0 +1,80 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.factory
+
+import org.onap.dcae.collectors.veshv.boundary.Collector
+import org.onap.dcae.collectors.veshv.boundary.CollectorProvider
+import org.onap.dcae.collectors.veshv.boundary.ConfigurationProvider
+import org.onap.dcae.collectors.veshv.boundary.Metrics
+import org.onap.dcae.collectors.veshv.boundary.SinkProvider
+import org.onap.dcae.collectors.veshv.domain.WireFrameDecoder
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import org.onap.dcae.collectors.veshv.impl.Router
+import org.onap.dcae.collectors.veshv.impl.VesDecoder
+import org.onap.dcae.collectors.veshv.impl.VesHvCollector
+import org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder
+import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
+import org.onap.dcae.collectors.veshv.utils.arrow.getOption
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import java.util.concurrent.atomic.AtomicReference
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+class CollectorFactory(val configuration: ConfigurationProvider,
+                       private val sinkProvider: SinkProvider,
+                       private val metrics: Metrics,
+                       private val maximumPayloadSizeBytes: Int,
+                       private val healthState: HealthState = HealthState.INSTANCE) {
+
+    fun createVesHvCollectorProvider(): CollectorProvider {
+        val collector: AtomicReference<Collector> = AtomicReference()
+        configuration()
+                .map(this::createVesHvCollector)
+                .doOnNext {
+                    logger.info("Using updated configuration for new connections")
+                    healthState.changeState(HealthDescription.HEALTHY)
+                }
+                .doOnError {
+                    logger.error("Failed to acquire configuration from consul")
+                    healthState.changeState(HealthDescription.CONSUL_CONFIGURATION_NOT_FOUND)
+                }
+                .subscribe(collector::set)
+        return collector::getOption
+    }
+
+    private fun createVesHvCollector(config: CollectorConfiguration): Collector {
+        return VesHvCollector(
+                wireChunkDecoderSupplier = { alloc ->
+                    WireChunkDecoder(WireFrameDecoder(maximumPayloadSizeBytes), alloc)
+                },
+                protobufDecoder = VesDecoder(),
+                router = Router(config.routing),
+                sink = sinkProvider(config),
+                metrics = metrics)
+    }
+
+    companion object {
+        private val logger = Logger(CollectorFactory::class)
+    }
+}
+
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/factory/ServerFactory.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/factory/ServerFactory.kt
new file mode 100644
index 00000000..dce933ab
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/factory/ServerFactory.kt
@@ -0,0 +1,35 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.factory
+
+import org.onap.dcae.collectors.veshv.boundary.CollectorProvider
+import org.onap.dcae.collectors.veshv.boundary.Server
+import org.onap.dcae.collectors.veshv.impl.socket.NettyTcpServer
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.ssl.boundary.ServerSslContextFactory
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+object ServerFactory {
+    fun createNettyTcpServer(serverConfiguration: ServerConfiguration, collectorProvider: CollectorProvider): Server =
+            NettyTcpServer(serverConfiguration, ServerSslContextFactory(), collectorProvider)
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/MessageValidator.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/MessageValidator.kt
new file mode 100644
index 00000000..fb949079
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/MessageValidator.kt
@@ -0,0 +1,38 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl
+
+import org.onap.dcae.collectors.veshv.domain.headerRequiredFieldDescriptors
+import org.onap.dcae.collectors.veshv.domain.vesEventListenerVersionRegex
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+
+internal object MessageValidator {
+
+    fun isValid(message: VesMessage): Boolean {
+        return allMandatoryFieldsArePresent(message.header)
+    }
+
+    private fun allMandatoryFieldsArePresent(header: CommonEventHeader) =
+            headerRequiredFieldDescriptors
+                    .all { fieldDescriptor -> header.hasField(fieldDescriptor) }
+                    .and(vesEventListenerVersionRegex.matches(header.vesEventListenerVersion))
+
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/Router.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/Router.kt
new file mode 100644
index 00000000..cee658b6
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/Router.kt
@@ -0,0 +1,30 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl
+
+import arrow.core.Option
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import org.onap.dcae.collectors.veshv.model.Routing
+import org.onap.dcae.collectors.veshv.model.VesMessage
+
+class Router(private val routing: Routing) {
+    fun findDestination(message: VesMessage): Option<RoutedMessage> =
+            routing.routeFor(message.header).map { it(message) }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/VesDecoder.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/VesDecoder.kt
new file mode 100644
index 00000000..1d43588f
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/VesDecoder.kt
@@ -0,0 +1,39 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl
+
+import arrow.core.Try
+import arrow.core.Option
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.ves.VesEventOuterClass.VesEvent
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+internal class VesDecoder {
+
+    fun decode(bytes: ByteData): Option<VesMessage> =
+            Try {
+                val decodedHeader = VesEvent.parseFrom(bytes.unsafeAsArray()).commonEventHeader
+                VesMessage(decodedHeader, bytes)
+            }.toOption()
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/VesHvCollector.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/VesHvCollector.kt
new file mode 100644
index 00000000..2f12e0cd
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/VesHvCollector.kt
@@ -0,0 +1,90 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl
+
+import arrow.core.Option
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import org.onap.dcae.collectors.veshv.boundary.Collector
+import org.onap.dcae.collectors.veshv.boundary.Metrics
+import org.onap.dcae.collectors.veshv.boundary.Sink
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.dcae.collectors.veshv.utils.logging.handleReactiveStreamError
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+internal class VesHvCollector(
+        private val wireChunkDecoderSupplier: (ByteBufAllocator) -> WireChunkDecoder,
+        private val protobufDecoder: VesDecoder,
+        private val router: Router,
+        private val sink: Sink,
+        private val metrics: Metrics) : Collector {
+
+    override fun handleConnection(alloc: ByteBufAllocator, dataStream: Flux<ByteBuf>): Mono<Void> =
+            wireChunkDecoderSupplier(alloc).let { wireDecoder ->
+                dataStream
+                        .transform { decodeWireFrame(it, wireDecoder) }
+                        .filter(WireFrameMessage::isValid)
+                        .transform(::decodePayload)
+                        .filter(VesMessage::isValid)
+                        .transform(::routeMessage)
+                        .onErrorResume { logger.handleReactiveStreamError(it) }
+                        .doFinally { releaseBuffersMemory(wireDecoder) }
+                        .then()
+            }
+
+    private fun decodeWireFrame(flux: Flux<ByteBuf>, decoder: WireChunkDecoder): Flux<WireFrameMessage> = flux
+            .doOnNext { metrics.notifyBytesReceived(it.readableBytes()) }
+            .concatMap(decoder::decode)
+            .doOnNext { metrics.notifyMessageReceived(it.payloadSize) }
+
+    private fun decodePayload(flux: Flux<WireFrameMessage>): Flux<VesMessage> = flux
+            .map(WireFrameMessage::payload)
+            .map(protobufDecoder::decode)
+            .flatMap { omitWhenNone(it) }
+
+    private fun routeMessage(flux: Flux<VesMessage>): Flux<RoutedMessage> = flux
+            .flatMap(this::findRoute)
+            .compose(sink::send)
+            .doOnNext { metrics.notifyMessageSent(it.topic) }
+
+
+    private fun findRoute(msg: VesMessage): Mono<RoutedMessage> = omitWhenNone((router::findDestination)(msg))
+
+    private fun <V> omitWhenNone(it: Option<V>): Mono<V> = it.fold(
+            {
+                logger.info("ommiting the message" + 5)
+                Mono.empty() },
+            { Mono.just(it) })
+
+    private fun releaseBuffersMemory(wireChunkDecoder: WireChunkDecoder) = wireChunkDecoder.release()
+
+    companion object {
+        private val logger = Logger(VesHvCollector::class)
+    }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/AdapterFactory.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/AdapterFactory.kt
new file mode 100644
index 00000000..8c16736d
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/AdapterFactory.kt
@@ -0,0 +1,40 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters
+
+import org.onap.dcae.collectors.veshv.boundary.ConfigurationProvider
+import org.onap.dcae.collectors.veshv.boundary.SinkProvider
+import org.onap.dcae.collectors.veshv.impl.adapters.kafka.KafkaSinkProvider
+import org.onap.dcae.collectors.veshv.model.ConfigurationProviderParams
+import reactor.netty.http.client.HttpClient
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+object AdapterFactory {
+    fun kafkaSink(): SinkProvider = KafkaSinkProvider()
+    fun loggingSink(): SinkProvider = LoggingSinkProvider()
+
+    fun consulConfigurationProvider(configurationProviderParams: ConfigurationProviderParams): ConfigurationProvider =
+            ConsulConfigurationProvider(httpAdapter(), configurationProviderParams)
+
+    private fun httpAdapter(): HttpAdapter = HttpAdapter(HttpClient.create())
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/ConsulConfigurationProvider.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/ConsulConfigurationProvider.kt
new file mode 100644
index 00000000..ec7c60c0
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/ConsulConfigurationProvider.kt
@@ -0,0 +1,122 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters
+
+import org.onap.dcae.collectors.veshv.boundary.ConfigurationProvider
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
+import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
+import org.onap.dcae.collectors.veshv.model.ConfigurationProviderParams
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+import reactor.retry.Jitter
+import reactor.retry.Retry
+import java.io.StringReader
+import java.time.Duration
+import java.util.concurrent.atomic.AtomicReference
+import javax.json.Json
+import javax.json.JsonObject
+
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since May 2018
+ */
+internal class ConsulConfigurationProvider(private val http: HttpAdapter,
+                                           private val url: String,
+                                           private val firstRequestDelay: Duration,
+                                           private val requestInterval: Duration,
+                                           private val healthState: HealthState,
+                                           retrySpec: Retry<Any>
+
+) : ConfigurationProvider {
+
+    private val lastConfigurationHash: AtomicReference<Int> = AtomicReference(0)
+    private val retry = retrySpec
+            .doOnRetry {
+                logger.warn("Could not get fresh configuration", it.exception())
+                healthState.changeState(HealthDescription.RETRYING_FOR_CONSUL_CONFIGURATION)
+            }
+
+    constructor(http: HttpAdapter,
+                params: ConfigurationProviderParams) : this(
+            http,
+            params.configurationUrl,
+            params.firstRequestDelay,
+            params.requestInterval,
+            HealthState.INSTANCE,
+            Retry.any<Any>()
+                    .retryMax(MAX_RETRIES)
+                    .fixedBackoff(params.requestInterval.dividedBy(BACKOFF_INTERVAL_FACTOR))
+                    .jitter(Jitter.random())
+    )
+
+    override fun invoke(): Flux<CollectorConfiguration> =
+            Flux.interval(firstRequestDelay, requestInterval)
+                    .concatMap { askForConfig() }
+                    .flatMap(::filterDifferentValues)
+                    .map(::parseJsonResponse)
+                    .map(::createCollectorConfiguration)
+                    .retryWhen(retry)
+
+    private fun askForConfig(): Mono<String> = http.get(url)
+
+    private fun filterDifferentValues(configurationString: String) =
+            hashOf(configurationString).let {
+                if (it == lastConfigurationHash.get()) {
+                    Mono.empty()
+                } else {
+                    lastConfigurationHash.set(it)
+                    Mono.just(configurationString)
+                }
+            }
+
+    private fun hashOf(str: String) = str.hashCode()
+
+    private fun parseJsonResponse(responseString: String): JsonObject =
+            Json.createReader(StringReader(responseString)).readObject()
+
+    private fun createCollectorConfiguration(configuration: JsonObject): CollectorConfiguration {
+        logger.info { "Obtained new configuration from consul:\n${configuration}" }
+        val routing = configuration.getJsonArray("collector.routing")
+
+        return CollectorConfiguration(
+                kafkaBootstrapServers = configuration.getString("dmaap.kafkaBootstrapServers"),
+                routing = org.onap.dcae.collectors.veshv.model.routing {
+                    for (route in routing) {
+                        val routeObj = route.asJsonObject()
+                        defineRoute {
+                            fromDomain(routeObj.getString("fromDomain"))
+                            toTopic(routeObj.getString("toTopic"))
+                            withFixedPartitioning()
+                        }
+                    }
+                }.build()
+        )
+    }
+
+    companion object {
+        private const val MAX_RETRIES = 5L
+        private const val BACKOFF_INTERVAL_FACTOR = 30L
+        private val logger = Logger(ConsulConfigurationProvider::class)
+    }
+}
+
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/HttpAdapter.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/HttpAdapter.kt
new file mode 100644
index 00000000..bdce6f73
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/HttpAdapter.kt
@@ -0,0 +1,68 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters
+
+import io.netty.handler.codec.http.HttpStatusClass
+import org.slf4j.LoggerFactory
+import reactor.core.publisher.Mono
+import reactor.netty.http.client.HttpClient
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since May 2018
+ */
+open class HttpAdapter(private val httpClient: HttpClient) {
+
+    private val logger = LoggerFactory.getLogger(HttpAdapter::class.java)
+
+    open fun get(url: String, queryParams: Map<String, Any> = emptyMap()): Mono<String> = httpClient
+            .get()
+            .uri(url + createQueryString(queryParams))
+            .responseSingle { response, content ->
+                if (response.status().codeClass() == HttpStatusClass.SUCCESS)
+                    content.asString()
+                else {
+                    val errorMessage = "$url ${response.status().code()} ${response.status().reasonPhrase()}"
+                    Mono.error(IllegalStateException(errorMessage))
+                }
+            }
+            .doOnError {
+                logger.error("Failed to get resource on path: $url (${it.localizedMessage})")
+                logger.debug("Nested exception:", it)
+            }
+
+    private fun createQueryString(params: Map<String, Any>): String {
+        if (params.isEmpty())
+            return ""
+
+        val builder = StringBuilder("?")
+        params.forEach { (key, value) ->
+            builder
+                    .append(key)
+                    .append("=")
+                    .append(value)
+                    .append("&")
+
+        }
+
+        return builder.removeSuffix("&").toString()
+    }
+
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/LoggingSinkProvider.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/LoggingSinkProvider.kt
new file mode 100644
index 00000000..5f4bf354
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/LoggingSinkProvider.kt
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters
+
+import org.onap.dcae.collectors.veshv.boundary.Sink
+import org.onap.dcae.collectors.veshv.boundary.SinkProvider
+import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import reactor.core.publisher.Flux
+import java.util.concurrent.atomic.AtomicLong
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+internal class LoggingSinkProvider : SinkProvider {
+
+    override fun invoke(config: CollectorConfiguration): Sink {
+        return object : Sink {
+            private val totalMessages = AtomicLong()
+            private val totalBytes = AtomicLong()
+
+            override fun send(messages: Flux<RoutedMessage>): Flux<RoutedMessage> =
+                    messages
+                            .doOnNext(this::logMessage)
+
+            private fun logMessage(msg: RoutedMessage) {
+                val msgs = totalMessages.addAndGet(1)
+                val bytes = totalBytes.addAndGet(msg.message.rawMessage.size().toLong())
+                val logMessageSupplier = { "Message routed to ${msg.topic}. Total = $msgs ($bytes B)" }
+                if (msgs % INFO_LOGGING_FREQ == 0L)
+                    logger.info(logMessageSupplier)
+                else
+                    logger.trace(logMessageSupplier)
+            }
+
+        }
+    }
+
+    companion object {
+        const val INFO_LOGGING_FREQ = 100_000
+        private val logger = Logger(LoggingSinkProvider::class)
+    }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt
new file mode 100644
index 00000000..a0c22418
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt
@@ -0,0 +1,82 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters.kafka
+
+import org.onap.dcae.collectors.veshv.boundary.Sink
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import reactor.core.publisher.Flux
+import reactor.kafka.sender.KafkaSender
+import reactor.kafka.sender.SenderRecord
+import reactor.kafka.sender.SenderResult
+import java.util.concurrent.atomic.AtomicLong
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+internal class KafkaSink(private val sender: KafkaSender<CommonEventHeader, VesMessage>) : Sink {
+    private val sentMessages = AtomicLong(0)
+
+    override fun send(messages: Flux<RoutedMessage>): Flux<RoutedMessage> {
+        val records = messages.map(this::vesToKafkaRecord)
+        val result = sender.send(records)
+                .doOnNext(::logException)
+                .filter(::isSuccessful)
+                .map { it.correlationMetadata() }
+
+        return if (logger.traceEnabled) {
+            result.doOnNext(::logSentMessage)
+        } else {
+            result
+        }
+    }
+
+    private fun vesToKafkaRecord(msg: RoutedMessage): SenderRecord<CommonEventHeader, VesMessage, RoutedMessage> {
+        return SenderRecord.create(
+                msg.topic,
+                msg.partition,
+                System.currentTimeMillis(),
+                msg.message.header,
+                msg.message,
+                msg)
+    }
+
+    private fun logException(senderResult: SenderResult<out Any>) {
+        if (senderResult.exception() != null) {
+            logger.warn(senderResult.exception()) { "Failed to send message to Kafka" }
+        }
+    }
+
+    private fun logSentMessage(sentMsg: RoutedMessage) {
+        logger.trace {
+            val msgNum = sentMessages.incrementAndGet()
+            "Message #$msgNum has been sent to ${sentMsg.topic}:${sentMsg.partition}"
+        }
+    }
+
+    private fun isSuccessful(senderResult: SenderResult<out Any>) = senderResult.exception() == null
+
+    companion object {
+        val logger = Logger(KafkaSink::class)
+    }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSinkProvider.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSinkProvider.kt
new file mode 100644
index 00000000..18191952
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSinkProvider.kt
@@ -0,0 +1,45 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters.kafka
+
+import org.apache.kafka.clients.producer.ProducerConfig
+import org.onap.dcae.collectors.veshv.boundary.Sink
+import org.onap.dcae.collectors.veshv.boundary.SinkProvider
+import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import reactor.kafka.sender.KafkaSender
+import reactor.kafka.sender.SenderOptions
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+internal class KafkaSinkProvider : SinkProvider {
+    override fun invoke(config: CollectorConfiguration): Sink {
+        return KafkaSink(KafkaSender.create(constructSenderOptions(config)))
+    }
+
+    private fun constructSenderOptions(config: CollectorConfiguration) =
+            SenderOptions.create<CommonEventHeader, VesMessage>()
+                    .producerProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, config.kafkaBootstrapServers)
+                    .producerProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, ProtobufSerializer::class.java)
+                    .producerProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, VesMessageSerializer::class.java)
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/ProtobufSerializer.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/ProtobufSerializer.kt
new file mode 100644
index 00000000..4e9932cc
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/ProtobufSerializer.kt
@@ -0,0 +1,40 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters.kafka
+
+import com.google.protobuf.MessageLite
+import org.apache.kafka.common.serialization.Serializer
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class ProtobufSerializer : Serializer<MessageLite> {
+    override fun configure(configs: MutableMap<String, *>?, isKey: Boolean) {
+        // no configuration
+    }
+
+    override fun serialize(topic: String?, data: MessageLite?): ByteArray? =
+            data?.toByteArray()
+
+    override fun close() {
+        // cleanup not needed
+    }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/VesMessageSerializer.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/VesMessageSerializer.kt
new file mode 100644
index 00000000..7a6ac7c8
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/VesMessageSerializer.kt
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters.kafka
+
+import org.apache.kafka.common.serialization.Serializer
+import org.onap.dcae.collectors.veshv.model.VesMessage
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class VesMessageSerializer : Serializer<VesMessage> {
+    override fun configure(configs: MutableMap<String, *>?, isKey: Boolean) {
+    }
+
+    override fun serialize(topic: String?, msg: VesMessage?): ByteArray? = msg?.rawMessage?.unsafeAsArray()
+
+    override fun close() {
+    }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/socket/NettyTcpServer.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/socket/NettyTcpServer.kt
new file mode 100644
index 00000000..e535300a
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/socket/NettyTcpServer.kt
@@ -0,0 +1,114 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.socket
+
+import arrow.core.getOrElse
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.boundary.CollectorProvider
+import org.onap.dcae.collectors.veshv.boundary.Server
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.ssl.boundary.ServerSslContextFactory
+import org.onap.dcae.collectors.veshv.utils.NettyServerHandle
+import org.onap.dcae.collectors.veshv.utils.ServerHandle
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import reactor.core.publisher.Mono
+import reactor.netty.ByteBufFlux
+import reactor.netty.Connection
+import reactor.netty.NettyInbound
+import reactor.netty.NettyOutbound
+import reactor.netty.tcp.TcpServer
+import java.time.Duration
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+internal class NettyTcpServer(private val serverConfig: ServerConfiguration,
+                              private val sslContextFactory: ServerSslContextFactory,
+                              private val collectorProvider: CollectorProvider) : Server {
+
+    override fun start(): IO<ServerHandle> = IO {
+        val tcpServer = TcpServer.create()
+                .addressSupplier { serverConfig.serverListenAddress }
+                .configureSsl()
+                .handle(this::handleConnection)
+
+        NettyServerHandle(tcpServer.bindNow())
+    }
+
+    private fun TcpServer.configureSsl() =
+            sslContextFactory
+                    .createSslContext(serverConfig.securityConfiguration)
+                    .map { sslContext ->
+                        this.secure { b -> b.sslContext(sslContext) }
+                    }.getOrElse { this }
+
+    private fun handleConnection(nettyInbound: NettyInbound, nettyOutbound: NettyOutbound): Mono<Void> =
+            collectorProvider().fold(
+                    {
+                        nettyInbound.withConnection { conn ->
+                            logger.warn { "Collector not ready. Closing connection from ${conn.address()}..." }
+                        }
+                        Mono.empty()
+                    },
+                    {
+                        nettyInbound.withConnection { conn ->
+                            logger.info { "Handling connection from ${conn.address()}" }
+                            conn.configureIdleTimeout(serverConfig.idleTimeout)
+                                    .logConnectionClosed()
+                        }
+                        it.handleConnection(nettyOutbound.alloc(), createDataStream(nettyInbound))
+                    }
+            )
+
+    private fun createDataStream(nettyInbound: NettyInbound): ByteBufFlux = nettyInbound
+            .receive()
+            .retain()
+
+    private fun Connection.configureIdleTimeout(timeout: Duration): Connection {
+        onReadIdle(timeout.toMillis()) {
+            logger.info {
+                "Idle timeout of ${timeout.seconds} s reached. Closing connection from ${address()}..."
+            }
+            disconnectClient()
+        }
+        return this
+    }
+
+    private fun Connection.disconnectClient() {
+        channel().close().addListener {
+            if (it.isSuccess)
+                logger.debug { "Channel (${address()}) closed successfully." }
+            else
+                logger.warn("Channel close failed", it.cause())
+        }
+    }
+
+    private fun Connection.logConnectionClosed(): Connection {
+        onTerminate().subscribe {
+            logger.info("Connection from ${address()} has been closed")
+        }
+        return this
+    }
+
+    companion object {
+        private val logger = Logger(NettyTcpServer::class)
+    }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireChunkDecoder.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireChunkDecoder.kt
new file mode 100644
index 00000000..4a2ef6b2
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireChunkDecoder.kt
@@ -0,0 +1,101 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.wire
+
+import arrow.effects.IO
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.domain.WireFrameDecoder
+import org.onap.dcae.collectors.veshv.domain.InvalidWireFrame
+import org.onap.dcae.collectors.veshv.domain.WireFrameDecodingError
+import org.onap.dcae.collectors.veshv.domain.MissingWireFrameBytes
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.dcae.collectors.veshv.utils.logging.handleReactiveStreamError
+import reactor.core.publisher.Flux
+import reactor.core.publisher.SynchronousSink
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+internal class WireChunkDecoder(
+        private val decoder: WireFrameDecoder,
+        alloc: ByteBufAllocator = ByteBufAllocator.DEFAULT) {
+    private val streamBuffer = alloc.compositeBuffer()
+
+    fun release() {
+        streamBuffer.release()
+    }
+
+    fun decode(byteBuf: ByteBuf): Flux<WireFrameMessage> = Flux.defer {
+        logIncomingMessage(byteBuf)
+        if (byteBuf.readableBytes() == 0) {
+            byteBuf.release()
+            Flux.empty()
+        } else {
+            streamBuffer.addComponent(true, byteBuf)
+            generateFrames()
+                    .onErrorResume { logger.handleReactiveStreamError(it, Flux.error(it)) }
+                    .doFinally { streamBuffer.discardReadComponents() }
+        }
+    }
+
+    private fun generateFrames(): Flux<WireFrameMessage> = Flux.generate { next ->
+        decoder.decodeFirst(streamBuffer)
+                .fold(onError(next), onSuccess(next))
+                .unsafeRunSync()
+    }
+
+    private fun onError(next: SynchronousSink<WireFrameMessage>): (WireFrameDecodingError) -> IO<Unit> = { err ->
+        when (err) {
+            is InvalidWireFrame -> IO {
+                next.error(WireFrameException(err))
+            }
+            is MissingWireFrameBytes -> IO {
+                logEndOfData()
+                next.complete()
+            }
+        }
+    }
+
+    private fun onSuccess(next: SynchronousSink<WireFrameMessage>): (WireFrameMessage) -> IO<Unit> = { frame ->
+        IO {
+            logDecodedWireMessage(frame)
+            next.next(frame)
+        }
+    }
+
+    private fun logIncomingMessage(wire: ByteBuf) {
+        logger.trace { "Got message with total size of ${wire.readableBytes()} B" }
+    }
+
+    private fun logDecodedWireMessage(wire: WireFrameMessage) {
+        logger.trace { "Wire payload size: ${wire.payloadSize} B" }
+    }
+
+    private fun logEndOfData() {
+        logger.trace { "End of data in current TCP buffer" }
+    }
+
+    companion object {
+        val logger = Logger(WireChunkDecoder::class)
+    }
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireFrameException.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireFrameException.kt
new file mode 100644
index 00000000..83a7cd85
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireFrameException.kt
@@ -0,0 +1,29 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.wire
+
+import org.onap.dcae.collectors.veshv.domain.WireFrameDecodingError
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class WireFrameException(error: WireFrameDecodingError)
+    : Exception("${error::class.simpleName}: ${error.message}")
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/CollectorConfiguration.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/CollectorConfiguration.kt
new file mode 100644
index 00000000..ec546c7d
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/CollectorConfiguration.kt
@@ -0,0 +1,26 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.model
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+data class CollectorConfiguration(val kafkaBootstrapServers: String, val routing: Routing)
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/ConfigurationProviderParams.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/ConfigurationProviderParams.kt
new file mode 100644
index 00000000..9de34498
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/ConfigurationProviderParams.kt
@@ -0,0 +1,30 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.model
+
+import java.time.Duration
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since July 2018
+ */
+data class ConfigurationProviderParams(val configurationUrl: String,
+                                       val firstRequestDelay: Duration,
+                                       val requestInterval: Duration)
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/RoutedMessage.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/RoutedMessage.kt
new file mode 100644
index 00000000..782877e3
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/RoutedMessage.kt
@@ -0,0 +1,22 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.model
+
+data class RoutedMessage(val topic: String, val partition: Int, val message: VesMessage)
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/ServerConfiguration.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/ServerConfiguration.kt
new file mode 100644
index 00000000..85117684
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/ServerConfiguration.kt
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.model
+
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+import java.net.InetSocketAddress
+import java.time.Duration
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+data class ServerConfiguration(
+        val serverListenAddress: InetSocketAddress,
+        val configurationProviderParams: ConfigurationProviderParams,
+        val securityConfiguration: SecurityConfiguration,
+        val idleTimeout: Duration,
+        val healthCheckApiListenAddress: InetSocketAddress,
+        val maximumPayloadSizeBytes: Int,
+        val dummyMode: Boolean = false)
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/VesMessage.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/VesMessage.kt
new file mode 100644
index 00000000..f5bfcce1
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/VesMessage.kt
@@ -0,0 +1,32 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.model
+
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.impl.MessageValidator
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+data class VesMessage(val header: CommonEventHeader, val rawMessage: ByteData) {
+    fun isValid(): Boolean = MessageValidator.isValid(this)
+}
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/routing.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/routing.kt
new file mode 100644
index 00000000..bab95c57
--- /dev/null
+++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/model/routing.kt
@@ -0,0 +1,83 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.model
+
+import arrow.core.Option
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+
+data class Routing(val routes: List<Route>) {
+
+    fun routeFor(commonHeader: CommonEventHeader): Option<Route> =
+            Option.fromNullable(routes.find { it.applies(commonHeader) })
+}
+
+data class Route(val domain: String, val targetTopic: String, val partitioning: (CommonEventHeader) -> Int) {
+
+    fun applies(commonHeader: CommonEventHeader) = commonHeader.domain == domain
+
+    operator fun invoke(message: VesMessage): RoutedMessage =
+            RoutedMessage(targetTopic, partitioning(message.header), message)
+}
+
+
+/*
+Configuration DSL
+ */
+
+fun routing(init: RoutingBuilder.() -> Unit): RoutingBuilder {
+    val conf = RoutingBuilder()
+    conf.init()
+    return conf
+}
+
+class RoutingBuilder {
+    private val routes: MutableList<RouteBuilder> = mutableListOf()
+
+    fun defineRoute(init: RouteBuilder.() -> Unit): RouteBuilder {
+        val rule = RouteBuilder()
+        rule.init()
+        routes.add(rule)
+        return rule
+    }
+
+    fun build() = Routing(routes.map { it.build() }.toList())
+}
+
+class RouteBuilder {
+
+    private lateinit var domain: String
+    private lateinit var targetTopic: String
+    private lateinit var partitioning: (CommonEventHeader) -> Int
+
+    fun fromDomain(domain: String) {
+        this.domain = domain
+    }
+
+    fun toTopic(targetTopic: String) {
+        this.targetTopic = targetTopic
+    }
+
+    fun withFixedPartitioning(num: Int = 0) {
+        partitioning = { num }
+    }
+
+    fun build() = Route(domain, targetTopic, partitioning)
+
+}
diff --git a/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/MessageValidatorTest.kt b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/MessageValidatorTest.kt
new file mode 100644
index 00000000..3090042d
--- /dev/null
+++ b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/MessageValidatorTest.kt
@@ -0,0 +1,128 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.dcae.collectors.veshv.tests.utils.commonHeader
+import org.onap.dcae.collectors.veshv.tests.utils.vesEventBytes
+import org.onap.ves.VesEventOuterClass.CommonEventHeader.*
+
+internal object MessageValidatorTest : Spek({
+
+    given("Message validator") {
+        val cut = MessageValidator
+
+        on("ves hv message including header with fully initialized fields") {
+            val commonHeader = commonHeader()
+
+            it("should accept message with fully initialized message header") {
+                val vesMessage = VesMessage(commonHeader, vesEventBytes(commonHeader))
+                assertThat(cut.isValid(vesMessage)).describedAs("message validation result").isTrue()
+            }
+
+            VesEventDomain.values()
+                    .forEach { domain ->
+                        it("should accept message with $domain domain") {
+                            val header = commonHeader(domain)
+                            val vesMessage = VesMessage(header, vesEventBytes(header))
+                            assertThat(cut.isValid(vesMessage))
+                                    .isTrue()
+                        }
+                    }
+        }
+
+        on("ves hv message bytes") {
+            val vesMessage = VesMessage(getDefaultInstance(), ByteData.EMPTY)
+            it("should not accept message with default header") {
+                assertThat(cut.isValid(vesMessage)).describedAs("message validation result").isFalse()
+            }
+        }
+
+        val priorityTestCases = mapOf(
+                Priority.PRIORITY_NOT_PROVIDED to false,
+                Priority.HIGH to true
+        )
+
+        priorityTestCases.forEach { value, expectedResult ->
+            on("ves hv message including header with priority $value") {
+                val commonEventHeader = commonHeader(priority = value)
+                val vesMessage = VesMessage(commonEventHeader, vesEventBytes(commonEventHeader))
+
+                it("should resolve validation result") {
+                    assertThat(cut.isValid(vesMessage)).describedAs("message validation results")
+                            .isEqualTo(expectedResult)
+                }
+            }
+        }
+
+        on("ves hv message including header with not initialized fields") {
+            val commonHeader = newBuilder()
+                    .setVersion("1.9")
+                    .setEventName("Sample event name")
+                    .setEventId("Sample event Id")
+                    .setSourceName("Sample Source")
+                    .build()
+            val rawMessageBytes = vesEventBytes(commonHeader)
+
+            it("should not accept not fully initialized message header") {
+                val vesMessage = VesMessage(commonHeader, rawMessageBytes)
+                assertThat(cut.isValid(vesMessage)).describedAs("message validation result").isFalse()
+            }
+        }
+
+        on("ves hv message including header.vesEventListenerVersion with non-string major part") {
+            val commonHeader = commonHeader(vesEventListenerVersion = "sample-version")
+            val rawMessageBytes = vesEventBytes(commonHeader)
+
+
+            it("should not accept message header") {
+                val vesMessage = VesMessage(commonHeader, rawMessageBytes)
+                assertThat(cut.isValid(vesMessage)).describedAs("message validation result").isFalse()
+            }
+        }
+
+        on("ves hv message including header.vesEventListenerVersion with major part != 7") {
+            val commonHeader = commonHeader(vesEventListenerVersion = "1.2.3")
+            val rawMessageBytes = vesEventBytes(commonHeader)
+
+            it("should not accept message header") {
+                val vesMessage = VesMessage(commonHeader, rawMessageBytes)
+                assertThat(cut.isValid(vesMessage)).describedAs("message validation result").isFalse()
+            }
+        }
+
+        on("ves hv message including header.vesEventListenerVersion with minor part not starting with a digit") {
+            val commonHeader = commonHeader(vesEventListenerVersion = "7.test")
+            val rawMessageBytes = vesEventBytes(commonHeader)
+
+            it("should not accept message header") {
+                val vesMessage = VesMessage(commonHeader, rawMessageBytes)
+                assertThat(cut.isValid(vesMessage)).describedAs("message validation result").isFalse()
+            }
+        }
+    }
+})
diff --git a/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/RouterTest.kt b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/RouterTest.kt
new file mode 100644
index 00000000..e8a31231
--- /dev/null
+++ b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/RouterTest.kt
@@ -0,0 +1,112 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl
+
+import arrow.core.None
+import arrow.core.Some
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.PERF3GPP
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.HEARTBEAT
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.SYSLOG
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.dcae.collectors.veshv.model.routing
+import org.onap.dcae.collectors.veshv.tests.utils.commonHeader
+
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+object RouterTest : Spek({
+    given("sample configuration") {
+        val config = routing {
+
+            defineRoute {
+                fromDomain(PERF3GPP.domainName)
+                toTopic("ves_rtpm")
+                withFixedPartitioning(2)
+            }
+
+            defineRoute {
+                fromDomain(SYSLOG.domainName)
+                toTopic("ves_trace")
+                withFixedPartitioning()
+            }
+        }.build()
+        val cut = Router(config)
+
+        on("message with existing route (rtpm)") {
+            val message = VesMessage(commonHeader(PERF3GPP), ByteData.EMPTY)
+            val result = cut.findDestination(message)
+
+            it("should have route available") {
+                assertThat(result).isNotNull()
+            }
+
+            it("should be routed to proper partition") {
+                assertThat(result.map(RoutedMessage::partition)).isEqualTo(Some(2))
+            }
+
+            it("should be routed to proper topic") {
+                assertThat(result.map(RoutedMessage::topic)).isEqualTo(Some("ves_rtpm"))
+            }
+
+            it("should be routed with a given message") {
+                assertThat(result.map(RoutedMessage::message)).isEqualTo(Some(message))
+            }
+        }
+
+        on("message with existing route (trace)") {
+            val message = VesMessage(commonHeader(SYSLOG), ByteData.EMPTY)
+            val result = cut.findDestination(message)
+
+            it("should have route available") {
+                assertThat(result).isNotNull()
+            }
+
+            it("should be routed to proper partition") {
+                assertThat(result.map(RoutedMessage::partition)).isEqualTo(Some(0))
+            }
+
+            it("should be routed to proper topic") {
+                assertThat(result.map(RoutedMessage::topic)).isEqualTo(Some("ves_trace"))
+            }
+
+            it("should be routed with a given message") {
+                assertThat(result.map(RoutedMessage::message)).isEqualTo(Some(message))
+            }
+        }
+
+        on("message with unknown route") {
+            val message = VesMessage(commonHeader(HEARTBEAT), ByteData.EMPTY)
+            val result = cut.findDestination(message)
+
+            it("should not have route available") {
+                assertThat(result).isEqualTo(None)
+            }
+        }
+    }
+})
\ No newline at end of file
diff --git a/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/VesDecoderTest.kt b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/VesDecoderTest.kt
new file mode 100644
index 00000000..8950a557
--- /dev/null
+++ b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/VesDecoderTest.kt
@@ -0,0 +1,74 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl
+
+import arrow.core.Option
+import com.google.protobuf.ByteString
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.HEARTBEAT
+import org.onap.dcae.collectors.veshv.model.VesMessage
+import org.onap.dcae.collectors.veshv.tests.utils.commonHeader
+import org.onap.dcae.collectors.veshv.tests.utils.vesEventBytes
+import java.nio.charset.Charset
+import kotlin.test.assertTrue
+import kotlin.test.fail
+
+
+internal object VesDecoderTest : Spek({
+
+    given("ves message decoder") {
+        val cut = VesDecoder()
+
+        on("ves hv message bytes") {
+            val commonHeader = commonHeader(HEARTBEAT)
+            val rawMessageBytes = vesEventBytes(commonHeader, ByteString.copyFromUtf8("highvolume measurements"))
+
+            it("should decode only header and pass it on along with raw message") {
+                val expectedMessage = VesMessage(
+                        commonHeader,
+                        rawMessageBytes
+                )
+
+                assertTrue {
+                    cut.decode(rawMessageBytes).exists {
+                        it == expectedMessage
+                    }
+                }
+            }
+        }
+
+        on("invalid ves hv message bytes") {
+            val rawMessageBytes = ByteData("ala ma kota".toByteArray(Charset.defaultCharset()))
+
+            it("should throw error") {
+                assertFailedWithError(cut.decode(rawMessageBytes))
+            }
+        }
+    }
+})
+
+private fun <A> assertFailedWithError(option: Option<A>) =
+        option.exists {
+            fail("Error expected")
+        }
diff --git a/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/ConsulConfigurationProviderTest.kt b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/ConsulConfigurationProviderTest.kt
new file mode 100644
index 00000000..c6364f74
--- /dev/null
+++ b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/ConsulConfigurationProviderTest.kt
@@ -0,0 +1,157 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters
+
+import com.nhaarman.mockitokotlin2.eq
+import com.nhaarman.mockitokotlin2.mock
+import com.nhaarman.mockitokotlin2.whenever
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.mockito.Mockito
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.HEARTBEAT
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.FAULT
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
+
+import reactor.core.publisher.Mono
+import reactor.retry.Retry
+import reactor.test.StepVerifier
+import java.time.Duration
+import java.util.*
+import kotlin.test.assertEquals
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since May 2018
+ */
+internal object ConsulConfigurationProviderTest : Spek({
+
+    describe("Consul configuration provider") {
+
+        val httpAdapterMock: HttpAdapter = mock()
+        val healthStateProvider = HealthState.INSTANCE
+
+        given("valid resource url") {
+            val validUrl = "http://valid-url/"
+            val consulConfigProvider = constructConsulConfigProvider(validUrl, httpAdapterMock, healthStateProvider)
+
+            on("call to consul") {
+                whenever(httpAdapterMock.get(eq(validUrl), Mockito.anyMap()))
+                        .thenReturn(Mono.just(constructConsulResponse()))
+
+                it("should use received configuration") {
+
+                    StepVerifier.create(consulConfigProvider().take(1))
+                            .consumeNextWith {
+
+                                assertEquals("$kafkaAddress:9093", it.kafkaBootstrapServers)
+
+                                val route1 = it.routing.routes[0]
+                                assertThat(FAULT.domainName)
+                                        .describedAs("routed domain 1")
+                                        .isEqualTo(route1.domain)
+                                assertThat("test-topic-1")
+                                        .describedAs("target topic 1")
+                                        .isEqualTo(route1.targetTopic)
+
+                                val route2 = it.routing.routes[1]
+                                assertThat(HEARTBEAT.domainName)
+                                        .describedAs("routed domain 2")
+                                        .isEqualTo(route2.domain)
+                                assertThat("test-topic-2")
+                                        .describedAs("target topic 2")
+                                        .isEqualTo(route2.targetTopic)
+
+                            }.verifyComplete()
+                }
+            }
+
+        }
+        given("invalid resource url") {
+            val invalidUrl = "http://invalid-url/"
+
+            val iterationCount = 3L
+            val consulConfigProvider = constructConsulConfigProvider(
+                    invalidUrl, httpAdapterMock, healthStateProvider, iterationCount
+            )
+
+            on("call to consul") {
+                whenever(httpAdapterMock.get(eq(invalidUrl), Mockito.anyMap()))
+                        .thenReturn(Mono.error(RuntimeException("Test exception")))
+
+                it("should interrupt the flux") {
+
+                    StepVerifier.create(consulConfigProvider())
+                            .verifyErrorMessage("Test exception")
+                }
+
+                it("should update the health state") {
+                    StepVerifier.create(healthStateProvider().take(iterationCount))
+                            .expectNextCount(iterationCount - 1)
+                            .expectNext(HealthDescription.RETRYING_FOR_CONSUL_CONFIGURATION)
+                            .verifyComplete()
+                }
+            }
+        }
+    }
+
+})
+
+private fun constructConsulConfigProvider(url: String,
+                                          httpAdapter: HttpAdapter,
+                                          healthState: HealthState,
+                                          iterationCount: Long = 1
+): ConsulConfigurationProvider {
+
+    val firstRequestDelay = Duration.ofMillis(1)
+    val requestInterval = Duration.ofMillis(1)
+    val retry = Retry.onlyIf<Any> { it.iteration() <= iterationCount }.fixedBackoff(Duration.ofNanos(1))
+
+    return ConsulConfigurationProvider(
+            httpAdapter,
+            url,
+            firstRequestDelay,
+            requestInterval,
+            healthState,
+            retry
+    )
+}
+
+
+const val kafkaAddress = "message-router-kafka"
+
+fun constructConsulResponse(): String =
+    """{
+    "dmaap.kafkaBootstrapServers": "$kafkaAddress:9093",
+    "collector.routing": [
+            {
+                "fromDomain": "fault",
+                "toTopic": "test-topic-1"
+            },
+            {
+                "fromDomain": "heartbeat",
+                "toTopic": "test-topic-2"
+            }
+    ]
+    }"""
diff --git a/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/HttpAdapterTest.kt b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/HttpAdapterTest.kt
new file mode 100644
index 00000000..91457faf
--- /dev/null
+++ b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/HttpAdapterTest.kt
@@ -0,0 +1,86 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.adapters
+
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import reactor.core.publisher.Mono
+import reactor.netty.http.client.HttpClient
+import reactor.netty.http.server.HttpServer
+import reactor.test.StepVerifier
+import reactor.test.test
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since May 2018
+ */
+internal object HttpAdapterTest : Spek({
+    describe("HttpAdapter") {
+
+        val httpServer = HttpServer.create()
+                .host("127.0.0.1")
+                .route { routes ->
+                    routes.get("/url") { req, resp ->
+                        resp.sendString(Mono.just(req.uri()))
+                    }
+                }
+                .bindNow()
+        val baseUrl = "http://${httpServer.host()}:${httpServer.port()}"
+        val httpAdapter = HttpAdapter(HttpClient.create().baseUrl(baseUrl))
+
+        afterGroup {
+            httpServer.disposeNow()
+        }
+
+        given("url without query params") {
+            val url = "/url"
+
+            it("should not append query string") {
+                httpAdapter.get(url).test()
+                        .expectNext(url)
+                        .verifyComplete()
+            }
+        }
+
+        given("url with query params") {
+            val queryParams = mapOf(Pair("p", "the-value"))
+            val url = "/url"
+
+            it("should add them as query string to the url") {
+                httpAdapter.get(url, queryParams).test()
+                        .expectNext("/url?p=the-value")
+                        .verifyComplete()
+            }
+        }
+
+        given("invalid url") {
+            val invalidUrl = "/wtf"
+
+            it("should interrupt the flux") {
+                StepVerifier
+                        .create(httpAdapter.get(invalidUrl))
+                        .verifyError()
+            }
+        }
+    }
+
+})
\ No newline at end of file
diff --git a/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireChunkDecoderTest.kt b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireChunkDecoderTest.kt
new file mode 100644
index 00000000..f06a0dc7
--- /dev/null
+++ b/sources/hv-collector-core/src/test/kotlin/org/onap/dcae/collectors/veshv/impl/wire/WireChunkDecoderTest.kt
@@ -0,0 +1,234 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.impl.wire
+
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.Unpooled
+import io.netty.buffer.UnpooledByteBufAllocator
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.onap.dcae.collectors.veshv.domain.WireFrameEncoder
+import org.onap.dcae.collectors.veshv.domain.WireFrameDecoder
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import reactor.test.test
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk></piotr.jaszczyk>@nokia.com>
+ * @since May 2018
+ */
+internal object WireChunkDecoderTest : Spek({
+    val alloc = UnpooledByteBufAllocator.DEFAULT
+    val samplePayload = "konstantynopolitanczykowianeczka".toByteArray()
+    val anotherPayload = "ala ma kota a kot ma ale".toByteArray()
+
+    val encoder = WireFrameEncoder(alloc)
+
+    fun WireChunkDecoder.decode(frame: WireFrameMessage) = decode(encoder.encode(frame))
+
+    fun createInstance() = WireChunkDecoder(WireFrameDecoder(WireFrameMessage.DEFAULT_MAX_PAYLOAD_SIZE_BYTES), alloc)
+
+    fun verifyMemoryReleased(vararg byteBuffers: ByteBuf) {
+        for (bb in byteBuffers) {
+            assertThat(bb.refCnt())
+                    .describedAs("should be released: $bb ref count")
+                    .isEqualTo(0)
+        }
+    }
+
+    fun verifyMemoryNotReleased(vararg byteBuffers: ByteBuf) {
+        for (bb in byteBuffers) {
+            assertThat(bb.refCnt())
+                    .describedAs("should not be released: $bb ref count")
+                    .isEqualTo(1)
+        }
+    }
+
+    describe("decoding wire protocol") {
+        given("empty input") {
+            val input = Unpooled.EMPTY_BUFFER
+
+            it("should yield empty result") {
+                createInstance().decode(input).test().verifyComplete()
+            }
+        }
+
+        given("input with no readable bytes") {
+            val input = Unpooled.wrappedBuffer(byteArrayOf(0x00)).readerIndex(1)
+
+            it("should yield empty result") {
+                createInstance().decode(input).test().verifyComplete()
+            }
+
+            it("should release memory") {
+                verifyMemoryReleased(input)
+            }
+        }
+
+        given("invalid input (not starting with marker)") {
+            val input = Unpooled.wrappedBuffer(samplePayload)
+
+            it("should yield error") {
+                createInstance().decode(input).test()
+                        .verifyError(WireFrameException::class.java)
+            }
+
+            it("should leave memory unreleased") {
+                verifyMemoryNotReleased(input)
+            }
+        }
+
+        given("valid input") {
+            val input = WireFrameMessage(samplePayload)
+
+            it("should yield decoded input frame") {
+                createInstance().decode(input).test()
+                        .expectNextMatches { it.payloadSize == samplePayload.size }
+                        .verifyComplete()
+            }
+        }
+
+        given("valid input with part of next frame") {
+            val input = Unpooled.buffer()
+                    .writeBytes(encoder.encode(WireFrameMessage(samplePayload)))
+                    .writeBytes(encoder.encode(WireFrameMessage(samplePayload)).slice(0, 3))
+
+            it("should yield decoded input frame") {
+                createInstance().decode(input).test()
+                        .expectNextMatches { it.payloadSize == samplePayload.size }
+                        .verifyComplete()
+            }
+
+            it("should leave memory unreleased") {
+                verifyMemoryNotReleased(input)
+            }
+        }
+
+        given("valid input with garbage after it") {
+            val input = Unpooled.buffer()
+                    .writeBytes(encoder.encode(WireFrameMessage(samplePayload)))
+                    .writeBytes(Unpooled.wrappedBuffer(samplePayload))
+
+            it("should yield decoded input frame and error") {
+                createInstance().decode(input).test()
+                        .expectNextMatches { it.payloadSize == samplePayload.size }
+                        .verifyError(WireFrameException::class.java)
+            }
+
+            it("should leave memory unreleased") {
+                verifyMemoryNotReleased(input)
+            }
+        }
+
+        given("two inputs containing two separate messages") {
+            val input1 = encoder.encode(WireFrameMessage(samplePayload))
+            val input2 = encoder.encode(WireFrameMessage(anotherPayload))
+
+            it("should yield decoded input frames") {
+                val cut = createInstance()
+                cut.decode(input1).test()
+                        .expectNextMatches { it.payloadSize == samplePayload.size }
+                        .verifyComplete()
+                cut.decode(input2).test()
+                        .expectNextMatches { it.payloadSize == anotherPayload.size }
+                        .verifyComplete()
+            }
+
+            it("should release memory") {
+                verifyMemoryReleased(input1, input2)
+            }
+        }
+
+        given("1st input containing 1st frame and 2nd input containing garbage") {
+            val input1 = encoder.encode(WireFrameMessage(samplePayload))
+            val input2 = Unpooled.wrappedBuffer(anotherPayload)
+
+            it("should yield decoded input frames") {
+                val cut = createInstance()
+                cut.decode(input1)
+                        .test()
+                        .expectNextMatches { it.payloadSize == samplePayload.size }
+                        .verifyComplete()
+                cut.decode(input2).test()
+                        .verifyError(WireFrameException::class.java)
+            }
+
+            it("should release memory for 1st input") {
+                verifyMemoryReleased(input1)
+            }
+
+            it("should leave memory unreleased for 2nd input") {
+                verifyMemoryNotReleased(input2)
+            }
+        }
+
+
+        given("1st input containing 1st frame + part of 2nd frame and 2nd input containing rest of 2nd frame") {
+            val frame1 = encoder.encode(WireFrameMessage(samplePayload))
+            val frame2 = encoder.encode(WireFrameMessage(anotherPayload))
+
+            val input1 = Unpooled.buffer()
+                    .writeBytes(frame1)
+                    .writeBytes(frame2, 3)
+            val input2 = Unpooled.buffer().writeBytes(frame2)
+
+            it("should yield decoded input frames") {
+                val cut = createInstance()
+                cut.decode(input1).test()
+                        .expectNextMatches { it.payloadSize == samplePayload.size }
+                        .verifyComplete()
+                cut.decode(input2).test()
+                        .expectNextMatches { it.payloadSize == anotherPayload.size }
+                        .verifyComplete()
+            }
+
+            it("should release memory") {
+                verifyMemoryReleased(input1, input2)
+            }
+        }
+
+        given("1st input containing part of 1st frame and 2nd input containing rest of 1st + 2nd frame") {
+            val frame1 = encoder.encode(WireFrameMessage(samplePayload))
+            val frame2 = encoder.encode(WireFrameMessage(anotherPayload))
+
+            val input1 = Unpooled.buffer()
+                    .writeBytes(frame1, 5)
+            val input2 = Unpooled.buffer()
+                    .writeBytes(frame1)
+                    .writeBytes(frame2)
+
+            it("should yield decoded input frames") {
+                val cut = createInstance()
+                cut.decode(input1).test()
+                        .verifyComplete()
+                cut.decode(input2).test()
+                        .expectNextMatches { it.payloadSize == samplePayload.size }
+                        .expectNextMatches { it.payloadSize == anotherPayload.size }
+                        .verifyComplete()
+            }
+
+            it("should release memory") {
+                verifyMemoryReleased(input1, input2)
+            }
+        }
+    }
+})
\ No newline at end of file
diff --git a/sources/hv-collector-core/src/test/resources/logback-test.xml b/sources/hv-collector-core/src/test/resources/logback-test.xml
new file mode 100644
index 00000000..9a4eacfe
--- /dev/null
+++ b/sources/hv-collector-core/src/test/resources/logback-test.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <property name="LOG_FILE"
+    value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}ves-hv.log}"/>
+  <property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %-5level [%-40.40logger{10}] - %msg%n"/>
+
+  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>
+        %d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %highlight(%-5level) [%-40.40logger{10}] - %msg%n
+      </pattern>
+    </encoder>
+  </appender>
+
+    <appender name="ROLLING-FILE"
+      class="ch.qos.logback.core.rolling.RollingFileAppender">
+      <encoder>
+        <pattern>${FILE_LOG_PATTERN}</pattern>
+      </encoder>
+      <file>${LOG_FILE}</file>
+      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+        <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
+        <maxFileSize>50MB</maxFileSize>
+        <maxHistory>30</maxHistory>
+        <totalSizeCap>10GB</totalSizeCap>
+      </rollingPolicy>
+    </appender>
+
+  <logger name="org.onap.dcae.collectors.veshv" level="TRACE"/>
+
+  <root level="INFO">
+      <appender-ref ref="CONSOLE"/>
+      <appender-ref ref="ROLLING-FILE"/>
+    </root>
+</configuration>
diff --git a/sources/hv-collector-ct/pom.xml b/sources/hv-collector-ct/pom.xml
new file mode 100644
index 00000000..61ac426b
--- /dev/null
+++ b/sources/hv-collector-ct/pom.xml
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-ct</artifactId>
+    <description>VES HighVolume Collector :: Component tests</description>
+
+    <properties>
+        <failIfMissingUnitTests>false</failIfMissingUnitTests>
+        <failIfMissingComponentTests>true</failIfMissingComponentTests>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-core</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-xnf-simulator</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-test-utils</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+
+
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-syntax</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-junit-platform-engine</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-test</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/PerformanceSpecification.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/PerformanceSpecification.kt
new file mode 100644
index 00000000..0897e910
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/PerformanceSpecification.kt
@@ -0,0 +1,203 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.component
+
+import arrow.syntax.function.partially1
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import io.netty.buffer.CompositeByteBuf
+import io.netty.buffer.Unpooled
+import io.netty.buffer.UnpooledByteBufAllocator
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.PERF3GPP
+import org.onap.dcae.collectors.veshv.domain.WireFrameEncoder
+import org.onap.dcae.collectors.veshv.tests.fakes.CountingSink
+import org.onap.dcae.collectors.veshv.tests.fakes.basicConfiguration
+import org.onap.dcae.collectors.veshv.tests.utils.commonHeader
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.VALID
+import org.onap.dcae.collectors.veshv.ves.message.generator.factory.MessageGeneratorFactory
+import reactor.core.publisher.Flux
+import reactor.math.sum
+import java.security.MessageDigest
+import java.time.Duration
+import java.util.*
+import kotlin.system.measureTimeMillis
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+object PerformanceSpecification : Spek({
+    debugRx(false)
+
+    describe("VES High Volume Collector performance") {
+        it("should handle multiple clients in reasonable time") {
+            val sink = CountingSink()
+            val sut = Sut(sink)
+            sut.configurationProvider.updateConfiguration(basicConfiguration)
+
+            val numMessages: Long = 300_000
+            val runs = 4
+            val timeout = Duration.ofMinutes((1 + (runs / 2)).toLong())
+
+            val params = MessageParameters(
+                    commonEventHeader = commonHeader(PERF3GPP),
+                    messageType = VALID,
+                    amount = numMessages
+            )
+
+            val fluxes = (1.rangeTo(runs)).map {
+                sut.collector.handleConnection(sut.alloc, generateDataStream(sut.alloc, params))
+            }
+            val durationMs = measureTimeMillis {
+                Flux.merge(fluxes).then().block(timeout)
+            }
+
+            val durationSec = durationMs / 1000.0
+            val throughput = sink.count / durationSec
+            logger.info("Processed $runs connections each containing $numMessages msgs.")
+            logger.info("Forwarded ${sink.count / ONE_MILION} Mmsgs in $durationSec seconds, that is $throughput msgs/s")
+            assertThat(sink.count)
+                    .describedAs("should send all events")
+                    .isEqualTo(runs * numMessages)
+        }
+
+        it("should disconnect on transmission errors") {
+            val sink = CountingSink()
+            val sut = Sut(sink)
+            sut.configurationProvider.updateConfiguration(basicConfiguration)
+
+            val numMessages: Long = 100_000
+            val timeout = Duration.ofSeconds(30)
+
+            val params = MessageParameters(
+                    commonEventHeader = commonHeader(PERF3GPP),
+                    messageType = VALID,
+                    amount = numMessages
+            )
+
+            val dataStream = generateDataStream(sut.alloc, params)
+                    .transform(::dropWhenIndex.partially1 { it % 101 == 0L })
+            sut.collector.handleConnection(sut.alloc, dataStream)
+                    .timeout(timeout)
+                    .block()
+
+            logger.info("Forwarded ${sink.count} msgs")
+            assertThat(sink.count)
+                    .describedAs("should send up to number of events")
+                    .isLessThan(numMessages)
+        }
+    }
+
+    describe("test infrastructure") {
+        val digest = MessageDigest.getInstance("MD5")
+
+        fun collectDigest(bb: ByteBuf) {
+            bb.markReaderIndex()
+            while (bb.isReadable) {
+                digest.update(bb.readByte())
+            }
+            bb.resetReaderIndex()
+        }
+
+        fun calculateDigest(arrays: List<ByteArray>): ByteArray {
+            for (array in arrays) {
+                digest.update(array)
+            }
+            return digest.digest()
+        }
+
+        it("should yield same bytes as in the input") {
+            val numberOfBuffers = 10
+            val singleBufferSize = 1000
+            val arrays = (1.rangeTo(numberOfBuffers)).map { randomByteArray(singleBufferSize) }
+            val inputDigest = calculateDigest(arrays)
+
+            val actualTotalSize = Flux.fromIterable(arrays)
+                    .map { Unpooled.wrappedBuffer(it) }
+                    .transform { simulateRemoteTcp(UnpooledByteBufAllocator.DEFAULT, 4, it) }
+                    .doOnNext(::collectDigest)
+                    .map {
+                        val size = it.readableBytes()
+                        it.release()
+                        size
+                    }
+                    .sum()
+                    .map(Long::toInt)
+                    .block()
+
+            val outputDigest = digest.digest()
+
+            assertThat(actualTotalSize!!).isEqualTo(numberOfBuffers * singleBufferSize)
+            assertThat(outputDigest).isEqualTo(inputDigest)
+
+        }
+    }
+})
+
+
+private const val ONE_MILION = 1_000_000.0
+
+private val rand = Random()
+private fun randomByteArray(size: Int): ByteArray {
+    val bytes = ByteArray(size)
+    rand.nextBytes(bytes)
+    return bytes
+}
+
+fun dropWhenIndex(predicate: (Long) -> Boolean, stream: Flux<ByteBuf>): Flux<ByteBuf> =
+        stream.index()
+                .filter { predicate(it.t1) }
+                .map { it.t2 }
+
+private fun generateDataStream(alloc: ByteBufAllocator, params: MessageParameters): Flux<ByteBuf> =
+        WireFrameEncoder(alloc).let { encoder ->
+            MessageGeneratorFactory.create(Sut.MAX_PAYLOAD_SIZE_BYTES)
+                    .createMessageFlux(listOf(params))
+                    .map(encoder::encode)
+                    .transform { simulateRemoteTcp(alloc, 1000, it) }
+        }
+
+private fun simulateRemoteTcp(alloc: ByteBufAllocator, maxSize: Int, byteBuffers: Flux<ByteBuf>) =
+        byteBuffers
+                .bufferTimeout(maxSize, Duration.ofMillis(250))
+                .map { joinBuffers(alloc, it) }
+                .concatMap { randomlySplitTcpFrames(it) }
+
+private fun joinBuffers(alloc: ByteBufAllocator, it: List<ByteBuf>?) =
+        alloc.compositeBuffer().addComponents(true, it)
+
+private fun randomlySplitTcpFrames(bb: CompositeByteBuf): Flux<ByteBuf> {
+    val targetFrameSize = Math.max(4, (bb.readableBytes() * Math.random()).toInt())
+    return Flux.create<ByteBuf> { sink ->
+        while (bb.isReadable) {
+            val frameSize = Math.min(targetFrameSize, bb.readableBytes())
+            sink.next(bb.retainedSlice(bb.readerIndex(), frameSize))
+            bb.readerIndex(bb.readerIndex() + frameSize)
+        }
+        bb.release()
+        sink.complete()
+    }
+}
+
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/Sut.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/Sut.kt
new file mode 100644
index 00000000..0495ced5
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/Sut.kt
@@ -0,0 +1,68 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.component
+
+import arrow.core.getOrElse
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import io.netty.buffer.UnpooledByteBufAllocator
+import org.onap.dcae.collectors.veshv.boundary.Collector
+import org.onap.dcae.collectors.veshv.boundary.Sink
+import org.onap.dcae.collectors.veshv.boundary.SinkProvider
+import org.onap.dcae.collectors.veshv.factory.CollectorFactory
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import org.onap.dcae.collectors.veshv.tests.fakes.FakeConfigurationProvider
+import org.onap.dcae.collectors.veshv.tests.fakes.FakeHealthState
+import org.onap.dcae.collectors.veshv.tests.fakes.FakeMetrics
+import org.onap.dcae.collectors.veshv.tests.fakes.StoringSink
+import reactor.core.publisher.Flux
+import java.time.Duration
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+class Sut(sink: Sink = StoringSink()) {
+    val configurationProvider = FakeConfigurationProvider()
+    val healthStateProvider = FakeHealthState()
+
+    val alloc: ByteBufAllocator = UnpooledByteBufAllocator.DEFAULT
+    private val metrics = FakeMetrics()
+    private val collectorFactory = CollectorFactory(
+            configurationProvider,
+            SinkProvider.just(sink),
+            metrics,
+            MAX_PAYLOAD_SIZE_BYTES,
+            healthStateProvider)
+    private val collectorProvider = collectorFactory.createVesHvCollectorProvider()
+
+    val collector: Collector
+        get() = collectorProvider().getOrElse{ throw IllegalStateException("Collector not available.") }
+
+    companion object {
+        const val MAX_PAYLOAD_SIZE_BYTES = 1024
+    }
+
+}
+
+fun Sut.handleConnection(sink: StoringSink, vararg packets: ByteBuf): List<RoutedMessage> {
+    collector.handleConnection(alloc, Flux.fromArray(packets)).block(Duration.ofSeconds(10))
+    return sink.sentMessages
+}
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/VesHvSpecification.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/VesHvSpecification.kt
new file mode 100644
index 00000000..2d81c671
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/VesHvSpecification.kt
@@ -0,0 +1,347 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.component
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.OTHER
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.PERF3GPP
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.HEARTBEAT
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.MEASUREMENT
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import org.onap.dcae.collectors.veshv.tests.fakes.ALTERNATE_PERF3GPP_TOPIC
+import org.onap.dcae.collectors.veshv.tests.fakes.PERF3GPP_TOPIC
+import org.onap.dcae.collectors.veshv.tests.fakes.MEASUREMENTS_FOR_VF_SCALING_TOPIC
+import org.onap.dcae.collectors.veshv.tests.fakes.StoringSink
+import org.onap.dcae.collectors.veshv.tests.fakes.basicConfiguration
+import org.onap.dcae.collectors.veshv.tests.fakes.configurationWithDifferentRouting
+import org.onap.dcae.collectors.veshv.tests.fakes.configurationWithoutRouting
+import org.onap.dcae.collectors.veshv.tests.fakes.twoDomainsToOneTopicConfiguration
+import org.onap.dcae.collectors.veshv.tests.utils.garbageFrame
+import org.onap.dcae.collectors.veshv.tests.utils.invalidWireFrame
+import org.onap.dcae.collectors.veshv.tests.utils.vesMessageWithPayloadOfSize
+import org.onap.dcae.collectors.veshv.tests.utils.vesWireFrameMessage
+import org.onap.dcae.collectors.veshv.tests.utils.wireFrameMessageWithInvalidPayload
+
+import reactor.core.publisher.Flux
+import java.time.Duration
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+object VesHvSpecification : Spek({
+    debugRx(false)
+
+    describe("VES High Volume Collector") {
+        it("should handle multiple HV RAN events") {
+            val (sut, sink) = vesHvWithStoringSink()
+            val messages = sut.handleConnection(sink,
+                    vesWireFrameMessage(PERF3GPP),
+                    vesWireFrameMessage(PERF3GPP)
+            )
+
+            assertThat(messages)
+                    .describedAs("should send all events")
+                    .hasSize(2)
+        }
+    }
+
+    describe("Memory management") {
+        it("should release memory for each handled and dropped message") {
+            val (sut, sink) = vesHvWithStoringSink()
+            val validMessage = vesWireFrameMessage(PERF3GPP)
+            val msgWithInvalidFrame = invalidWireFrame()
+            val msgWithTooBigPayload = vesMessageWithPayloadOfSize(Sut.MAX_PAYLOAD_SIZE_BYTES + 1, PERF3GPP)
+            val expectedRefCnt = 0
+
+            val handledEvents = sut.handleConnection(
+                    sink, validMessage, msgWithInvalidFrame, msgWithTooBigPayload)
+
+            assertThat(handledEvents).hasSize(1)
+
+            assertThat(validMessage.refCnt())
+                    .describedAs("handled message should be released")
+                    .isEqualTo(expectedRefCnt)
+            assertThat(msgWithInvalidFrame.refCnt())
+                    .describedAs("message with invalid frame should be released")
+                    .isEqualTo(expectedRefCnt)
+            assertThat(msgWithTooBigPayload.refCnt())
+                    .describedAs("message with payload exceeding 1MiB should be released")
+                    .isEqualTo(expectedRefCnt)
+        }
+
+        it("should release memory for each message with invalid payload") {
+            val (sut, sink) = vesHvWithStoringSink()
+            val validMessage = vesWireFrameMessage(PERF3GPP)
+            val msgWithInvalidPayload = wireFrameMessageWithInvalidPayload()
+            val expectedRefCnt = 0
+
+            val handledEvents = sut.handleConnection(sink, validMessage, msgWithInvalidPayload)
+
+            assertThat(handledEvents).hasSize(1)
+
+            assertThat(validMessage.refCnt())
+                    .describedAs("handled message should be released")
+                    .isEqualTo(expectedRefCnt)
+            assertThat(msgWithInvalidPayload.refCnt())
+                    .describedAs("message with invalid payload should be released")
+                    .isEqualTo(expectedRefCnt)
+
+        }
+
+        it("should release memory for each message with garbage frame") {
+            val (sut, sink) = vesHvWithStoringSink()
+            val validMessage = vesWireFrameMessage(PERF3GPP)
+            val msgWithGarbageFrame = garbageFrame()
+            val expectedRefCnt = 0
+
+            val handledEvents = sut.handleConnection(sink, validMessage, msgWithGarbageFrame)
+
+            assertThat(handledEvents).hasSize(1)
+
+            assertThat(validMessage.refCnt())
+                    .describedAs("handled message should be released")
+                    .isEqualTo(expectedRefCnt)
+            assertThat(msgWithGarbageFrame.refCnt())
+                    .describedAs("message with garbage frame should be released")
+                    .isEqualTo(expectedRefCnt)
+
+        }
+    }
+
+    describe("message routing") {
+        it("should direct message to a topic by means of routing configuration") {
+            val (sut, sink) = vesHvWithStoringSink()
+
+            val messages = sut.handleConnection(sink, vesWireFrameMessage(PERF3GPP))
+            assertThat(messages).describedAs("number of routed messages").hasSize(1)
+
+            val msg = messages[0]
+            assertThat(msg.topic).describedAs("routed message topic").isEqualTo(PERF3GPP_TOPIC)
+            assertThat(msg.partition).describedAs("routed message partition").isEqualTo(0)
+        }
+
+        it("should be able to direct 2 messages from different domains to one topic") {
+            val (sut, sink) = vesHvWithStoringSink()
+
+            sut.configurationProvider.updateConfiguration(twoDomainsToOneTopicConfiguration)
+
+            val messages = sut.handleConnection(sink,
+                    vesWireFrameMessage(PERF3GPP),
+                    vesWireFrameMessage(HEARTBEAT),
+                    vesWireFrameMessage(MEASUREMENT))
+
+            assertThat(messages).describedAs("number of routed messages").hasSize(3)
+
+            assertThat(messages[0].topic).describedAs("first message topic")
+                    .isEqualTo(PERF3GPP_TOPIC)
+
+            assertThat(messages[1].topic).describedAs("second message topic")
+                    .isEqualTo(PERF3GPP_TOPIC)
+
+            assertThat(messages[2].topic).describedAs("last message topic")
+                    .isEqualTo(MEASUREMENTS_FOR_VF_SCALING_TOPIC)
+        }
+
+        it("should drop message if route was not found") {
+            val (sut, sink) = vesHvWithStoringSink()
+            val messages = sut.handleConnection(sink,
+                    vesWireFrameMessage(OTHER, "first"),
+                    vesWireFrameMessage(PERF3GPP, "second"),
+                    vesWireFrameMessage(HEARTBEAT, "third"))
+
+            assertThat(messages).describedAs("number of routed messages").hasSize(1)
+
+            val msg = messages[0]
+            assertThat(msg.topic).describedAs("routed message topic").isEqualTo(PERF3GPP_TOPIC)
+            assertThat(msg.message.header.eventId).describedAs("routed message eventId").isEqualTo("second")
+        }
+    }
+
+    describe("configuration update") {
+
+        val defaultTimeout = Duration.ofSeconds(10)
+
+        given("successful configuration change") {
+
+            lateinit var sut: Sut
+            lateinit var sink: StoringSink
+
+            beforeEachTest {
+                vesHvWithStoringSink().run {
+                    sut = first
+                    sink = second
+                }
+            }
+
+            it("should update collector") {
+                val firstCollector = sut.collector
+
+                sut.configurationProvider.updateConfiguration(configurationWithDifferentRouting)
+                val collectorAfterUpdate = sut.collector
+
+                assertThat(collectorAfterUpdate).isNotSameAs(firstCollector)
+            }
+
+            it("should start routing messages") {
+
+                sut.configurationProvider.updateConfiguration(configurationWithoutRouting)
+
+                val messages = sut.handleConnection(sink, vesWireFrameMessage(PERF3GPP))
+                assertThat(messages).isEmpty()
+
+                sut.configurationProvider.updateConfiguration(basicConfiguration)
+
+                val messagesAfterUpdate = sut.handleConnection(sink, vesWireFrameMessage(PERF3GPP))
+                assertThat(messagesAfterUpdate).hasSize(1)
+                val message = messagesAfterUpdate[0]
+
+                assertThat(message.topic).describedAs("routed message topic after configuration's change")
+                        .isEqualTo(PERF3GPP_TOPIC)
+                assertThat(message.partition).describedAs("routed message partition")
+                        .isEqualTo(0)
+            }
+
+            it("should change domain routing") {
+
+                val messages = sut.handleConnection(sink, vesWireFrameMessage(PERF3GPP))
+                assertThat(messages).hasSize(1)
+                val firstMessage = messages[0]
+
+                assertThat(firstMessage.topic).describedAs("routed message topic on initial configuration")
+                        .isEqualTo(PERF3GPP_TOPIC)
+                assertThat(firstMessage.partition).describedAs("routed message partition")
+                        .isEqualTo(0)
+
+
+                sut.configurationProvider.updateConfiguration(configurationWithDifferentRouting)
+
+                val messagesAfterUpdate = sut.handleConnection(sink, vesWireFrameMessage(PERF3GPP))
+                assertThat(messagesAfterUpdate).hasSize(2)
+                val secondMessage = messagesAfterUpdate[1]
+
+                assertThat(secondMessage.topic).describedAs("routed message topic after configuration's change")
+                        .isEqualTo(ALTERNATE_PERF3GPP_TOPIC)
+                assertThat(secondMessage.partition).describedAs("routed message partition")
+                        .isEqualTo(0)
+            }
+
+            it("should update routing for each client sending one message") {
+
+                val messagesAmount = 10
+                val messagesForEachTopic = 5
+
+                Flux.range(0, messagesAmount).doOnNext {
+                    if (it == messagesForEachTopic) {
+                        sut.configurationProvider.updateConfiguration(configurationWithDifferentRouting)
+                    }
+                }.doOnNext {
+                    sut.handleConnection(sink, vesWireFrameMessage(PERF3GPP))
+                }.then().block(defaultTimeout)
+
+
+                val messages = sink.sentMessages
+                val firstTopicMessagesCount = messages.count { it.topic == PERF3GPP_TOPIC }
+                val secondTopicMessagesCount = messages.count { it.topic == ALTERNATE_PERF3GPP_TOPIC }
+
+                assertThat(messages.size).isEqualTo(messagesAmount)
+                assertThat(messagesForEachTopic)
+                        .describedAs("amount of messages routed to each topic")
+                        .isEqualTo(firstTopicMessagesCount)
+                        .isEqualTo(secondTopicMessagesCount)
+            }
+
+            it("should not update routing for client sending continuous stream of messages") {
+
+                val messageStreamSize = 10
+                val pivot = 5
+
+                val incomingMessages = Flux.range(0, messageStreamSize)
+                        .doOnNext {
+                            if (it == pivot) {
+                                sut.configurationProvider.updateConfiguration(configurationWithDifferentRouting)
+                                println("config changed")
+                            }
+                        }
+                        .map { vesWireFrameMessage(PERF3GPP) }
+
+
+                sut.collector.handleConnection(sut.alloc, incomingMessages).block(defaultTimeout)
+
+                val messages = sink.sentMessages
+                val firstTopicMessagesCount = messages.count { it.topic == PERF3GPP_TOPIC }
+                val secondTopicMessagesCount = messages.count { it.topic == ALTERNATE_PERF3GPP_TOPIC }
+
+                assertThat(messages.size).isEqualTo(messageStreamSize)
+                assertThat(firstTopicMessagesCount)
+                        .describedAs("amount of messages routed to first topic")
+                        .isEqualTo(messageStreamSize)
+
+                assertThat(secondTopicMessagesCount)
+                        .describedAs("amount of messages routed to second topic")
+                        .isEqualTo(0)
+            }
+
+            it("should mark the application healthy") {
+                assertThat(sut.healthStateProvider.currentHealth)
+                        .describedAs("application health state")
+                        .isEqualTo(HealthDescription.HEALTHY)
+            }
+        }
+
+        given("failed configuration change") {
+            val (sut, _) = vesHvWithStoringSink()
+            sut.configurationProvider.shouldThrowExceptionOnConfigUpdate(true)
+            sut.configurationProvider.updateConfiguration(basicConfiguration)
+
+            it("should mark the application unhealthy ") {
+                assertThat(sut.healthStateProvider.currentHealth)
+                        .describedAs("application health state")
+                        .isEqualTo(HealthDescription.CONSUL_CONFIGURATION_NOT_FOUND)
+            }
+        }
+    }
+
+    describe("request validation") {
+        it("should reject message with payload greater than 1 MiB and all subsequent messages") {
+            val (sut, sink) = vesHvWithStoringSink()
+
+            val handledMessages = sut.handleConnection(sink,
+                    vesWireFrameMessage(PERF3GPP, "first"),
+                    vesMessageWithPayloadOfSize(Sut.MAX_PAYLOAD_SIZE_BYTES + 1, PERF3GPP),
+                    vesWireFrameMessage(PERF3GPP))
+
+            assertThat(handledMessages).hasSize(1)
+            assertThat(handledMessages.first().message.header.eventId).isEqualTo("first")
+        }
+    }
+
+})
+
+private fun vesHvWithStoringSink(): Pair<Sut, StoringSink> {
+    val sink = StoringSink()
+    val sut = Sut(sink)
+    sut.configurationProvider.updateConfiguration(basicConfiguration)
+    return Pair(sut, sink)
+}
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/spekUtils.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/spekUtils.kt
new file mode 100644
index 00000000..29df8c70
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/component/spekUtils.kt
@@ -0,0 +1,38 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.component
+
+import org.jetbrains.spek.api.dsl.SpecBody
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import reactor.core.publisher.Hooks
+
+fun SpecBody.debugRx(debug: Boolean = true) {
+    if (debug) {
+        beforeGroup {
+            Hooks.onOperatorDebug()
+        }
+
+        afterGroup {
+            Hooks.resetOnOperatorDebug()
+        }
+    }
+}
+
+val logger = Logger("org.onap.dcae.collectors.veshv.tests.component")
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/FakeHealthState.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/FakeHealthState.kt
new file mode 100644
index 00000000..c25771b7
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/FakeHealthState.kt
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.fakes
+
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
+import reactor.core.publisher.Flux
+
+class FakeHealthState : HealthState {
+
+    lateinit var currentHealth: HealthDescription
+
+    override fun changeState(healthDescription: HealthDescription) {
+        currentHealth = healthDescription
+    }
+
+    override fun invoke(): Flux<HealthDescription> {
+        throw NotImplementedError()
+    }
+}
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/configuration.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/configuration.kt
new file mode 100644
index 00000000..3770913a
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/configuration.kt
@@ -0,0 +1,106 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.fakes
+
+import org.onap.dcae.collectors.veshv.boundary.ConfigurationProvider
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.PERF3GPP
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.HEARTBEAT
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.MEASUREMENT
+import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
+import org.onap.dcae.collectors.veshv.model.routing
+
+import reactor.core.publisher.FluxProcessor
+import reactor.core.publisher.UnicastProcessor
+import reactor.retry.RetryExhaustedException
+
+
+const val PERF3GPP_TOPIC = "HV_VES_PERF3GPP"
+const val MEASUREMENTS_FOR_VF_SCALING_TOPIC = "HV_VES_MEAS_FOR_VF_SCALING"
+const val ALTERNATE_PERF3GPP_TOPIC = "HV_VES_PERF3GPP_ALTERNATIVE"
+
+val basicConfiguration: CollectorConfiguration = CollectorConfiguration(
+        kafkaBootstrapServers = "localhost:9969",
+        routing = routing {
+            defineRoute {
+                fromDomain(PERF3GPP.domainName)
+                toTopic(PERF3GPP_TOPIC)
+                withFixedPartitioning()
+            }
+        }.build()
+)
+
+val twoDomainsToOneTopicConfiguration: CollectorConfiguration = CollectorConfiguration(
+        kafkaBootstrapServers = "localhost:9969",
+        routing = routing {
+            defineRoute {
+                fromDomain(PERF3GPP.domainName)
+                toTopic(PERF3GPP_TOPIC)
+                withFixedPartitioning()
+            }
+            defineRoute {
+                fromDomain(HEARTBEAT.domainName)
+                toTopic(PERF3GPP_TOPIC)
+                withFixedPartitioning()
+            }
+            defineRoute {
+                fromDomain(MEASUREMENT.domainName)
+                toTopic(MEASUREMENTS_FOR_VF_SCALING_TOPIC)
+                withFixedPartitioning()
+            }
+        }.build()
+)
+
+
+val configurationWithDifferentRouting: CollectorConfiguration = CollectorConfiguration(
+        kafkaBootstrapServers = "localhost:9969",
+        routing = routing {
+            defineRoute {
+                fromDomain(PERF3GPP.domainName)
+                toTopic(ALTERNATE_PERF3GPP_TOPIC)
+                withFixedPartitioning()
+            }
+        }.build()
+)
+
+
+val configurationWithoutRouting: CollectorConfiguration = CollectorConfiguration(
+        kafkaBootstrapServers = "localhost:9969",
+        routing = routing {
+        }.build()
+)
+
+class FakeConfigurationProvider : ConfigurationProvider {
+    private var shouldThrowException = false
+    private val configStream: FluxProcessor<CollectorConfiguration, CollectorConfiguration> = UnicastProcessor.create()
+
+    fun updateConfiguration(collectorConfiguration: CollectorConfiguration) =
+            if (shouldThrowException) {
+                configStream.onError(RetryExhaustedException("I'm so tired"))
+            } else {
+                configStream.onNext(collectorConfiguration)
+            }
+
+
+    fun shouldThrowExceptionOnConfigUpdate(shouldThrowException: Boolean) {
+        this.shouldThrowException = shouldThrowException
+    }
+
+    override fun invoke() = configStream
+}
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/metrics.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/metrics.kt
new file mode 100644
index 00000000..aa3fdc39
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/metrics.kt
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.fakes
+
+import org.onap.dcae.collectors.veshv.boundary.Metrics
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class FakeMetrics: Metrics {
+    override fun notifyBytesReceived(size: Int) {
+    }
+
+    override fun notifyMessageReceived(size: Int) {
+    }
+
+    override fun notifyMessageSent(topic: String) {
+    }
+}
\ No newline at end of file
diff --git a/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/sink.kt b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/sink.kt
new file mode 100644
index 00000000..a5fd546a
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/kotlin/org/onap/dcae/collectors/veshv/tests/fakes/sink.kt
@@ -0,0 +1,59 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.fakes
+
+import org.onap.dcae.collectors.veshv.boundary.Sink
+import org.onap.dcae.collectors.veshv.model.RoutedMessage
+import reactor.core.publisher.Flux
+import java.util.*
+import java.util.concurrent.ConcurrentLinkedDeque
+import java.util.concurrent.atomic.AtomicLong
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+class StoringSink : Sink {
+    private val sent: Deque<RoutedMessage> = ConcurrentLinkedDeque()
+
+    val sentMessages: List<RoutedMessage>
+        get() = sent.toList()
+
+    override fun send(messages: Flux<RoutedMessage>): Flux<RoutedMessage> {
+        return messages.doOnNext(sent::addLast)
+    }
+}
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+class CountingSink : Sink {
+    private val atomicCount = AtomicLong(0)
+
+    val count: Long
+        get() = atomicCount.get()
+
+    override fun send(messages: Flux<RoutedMessage>): Flux<RoutedMessage> {
+        return messages.doOnNext {
+            atomicCount.incrementAndGet()
+        }
+    }
+}
diff --git a/sources/hv-collector-ct/src/test/resources/logback-test.xml b/sources/hv-collector-ct/src/test/resources/logback-test.xml
new file mode 100644
index 00000000..93f22771
--- /dev/null
+++ b/sources/hv-collector-ct/src/test/resources/logback-test.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <property name="LOG_FILE"
+    value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}ves-hv.log}"/>
+  <property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %-5level [%-40.40logger{10}] - %msg%n"/>
+
+  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>
+        %d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %highlight(%-5level) [%-40.40logger{10}] - %msg%n
+      </pattern>
+    </encoder>
+  </appender>
+
+    <appender name="ROLLING-FILE"
+      class="ch.qos.logback.core.rolling.RollingFileAppender">
+      <encoder>
+        <pattern>${FILE_LOG_PATTERN}</pattern>
+      </encoder>
+      <file>${LOG_FILE}</file>
+      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+        <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
+        <maxFileSize>50MB</maxFileSize>
+        <maxHistory>30</maxHistory>
+        <totalSizeCap>10GB</totalSizeCap>
+      </rollingPolicy>
+    </appender>
+
+  <logger name="org.onap.dcae.collectors.veshv" level="DEBUG"/>
+
+  <root level="INFO">
+      <appender-ref ref="CONSOLE"/>
+      <appender-ref ref="ROLLING-FILE"/>
+    </root>
+</configuration>
diff --git a/sources/hv-collector-dcae-app-simulator/Dockerfile b/sources/hv-collector-dcae-app-simulator/Dockerfile
new file mode 100644
index 00000000..a561fff7
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/Dockerfile
@@ -0,0 +1,18 @@
+FROM docker.io/openjdk:11-jre-slim
+
+LABEL copyright="Copyright (C) 2018 NOKIA"
+LABEL license.name="The Apache Software License, Version 2.0"
+LABEL license.url="http://www.apache.org/licenses/LICENSE-2.0"
+LABEL maintainer="Nokia Wroclaw ONAP Team"
+
+RUN apt-get update \
+        && apt-get install -y --no-install-recommends curl  \
+        && apt-get clean
+
+WORKDIR /opt/ves-hv-dcae-app-simulator
+
+ENTRYPOINT ["java", "-cp", "*:", "org.onap.dcae.collectors.veshv.simulators.dcaeapp.MainKt"]
+
+COPY target/libs/external/* ./
+COPY target/libs/internal/* ./
+COPY target/hv-collector-dcae-app-simulator-*.jar ./
diff --git a/sources/hv-collector-dcae-app-simulator/pom.xml b/sources/hv-collector-dcae-app-simulator/pom.xml
new file mode 100644
index 00000000..c34e885d
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/pom.xml
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-dcae-app-simulator</artifactId>
+    <description>VES HighVolume Collector :: Dcae app simulator</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+    <profiles>
+        <profile>
+            <id>docker</id>
+            <activation>
+                <property>
+                    <name>!skipDocker</name>
+                </property>
+            </activation>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-dependency-plugin</artifactId>
+                    </plugin>
+                    <plugin>
+                        <groupId>io.fabric8</groupId>
+                        <artifactId>docker-maven-plugin</artifactId>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-domain</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-utils</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-ves-message-generator</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-test-utils</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects-instances</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects-reactor</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-syntax</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.ratpack</groupId>
+            <artifactId>ratpack-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor.kafka</groupId>
+            <artifactId>reactor-kafka</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-java-util</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>commons-cli</groupId>
+            <artifactId>commons-cli</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib-jdk8</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulator.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulator.kt
new file mode 100644
index 00000000..490cde4a
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulator.kt
@@ -0,0 +1,74 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
+
+import arrow.core.getOrElse
+import arrow.effects.IO
+import arrow.effects.fix
+import arrow.effects.instances.io.monadError.monadError
+import arrow.typeclasses.bindingCatch
+import org.onap.dcae.collectors.veshv.utils.arrow.getOption
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import java.io.InputStream
+import java.util.concurrent.atomic.AtomicReference
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+class DcaeAppSimulator(private val consumerFactory: ConsumerFactory,
+                       private val messageStreamValidation: MessageStreamValidation) {
+    private val consumerState: AtomicReference<ConsumerStateProvider> = AtomicReference()
+
+    fun listenToTopics(topicsString: String) = listenToTopics(extractTopics(topicsString))
+
+    fun listenToTopics(topics: Set<String>): IO<Unit> = IO.monadError().bindingCatch {
+        if (topics.any { it.isBlank() })
+            throw IllegalArgumentException("Topic list cannot contain empty elements")
+        if (topics.isEmpty())
+            throw IllegalArgumentException("Topic list cannot be empty")
+
+        logger.info("Received new configuration. Creating consumer for topics: $topics")
+        consumerState.set(consumerFactory.createConsumerForTopics(topics).bind())
+    }.fix()
+
+    fun state() = consumerState.getOption().map { it.currentState() }
+
+    fun resetState(): IO<Unit> = consumerState.getOption().fold(
+            { IO.unit },
+            { it.reset() }
+    )
+
+    fun validate(jsonDescription: InputStream) = messageStreamValidation.validate(jsonDescription, currentMessages())
+
+    private fun currentMessages(): List<ByteArray> =
+            consumerState.getOption()
+                    .map { it.currentState().consumedMessages }
+                    .getOrElse(::emptyList)
+
+    private fun extractTopics(topicsString: String): Set<String> =
+            topicsString.substringAfter("=")
+                    .split(",")
+                    .toSet()
+
+    companion object {
+        private val logger = Logger(DcaeAppSimulator::class)
+    }
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/MessageStreamValidation.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/MessageStreamValidation.kt
new file mode 100644
index 00000000..e423191d
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/MessageStreamValidation.kt
@@ -0,0 +1,88 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
+
+import arrow.effects.IO
+import arrow.effects.fix
+import arrow.effects.instances.io.monadError.monadError
+import arrow.typeclasses.bindingCatch
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.utils.arrow.asIo
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
+import org.onap.ves.VesEventOuterClass
+import java.io.InputStream
+import javax.json.Json
+
+class MessageStreamValidation(
+        private val messageGenerator: MessageGenerator,
+        private val messageParametersParser: MessageParametersParser = MessageParametersParser.INSTANCE) {
+
+    fun validate(jsonDescription: InputStream, consumedMessages: List<ByteArray>): IO<Boolean> =
+            IO.monadError().bindingCatch {
+                val messageParams = parseMessageParams(jsonDescription)
+                val expectedEvents = generateEvents(messageParams).bind()
+                val actualEvents = decodeConsumedEvents(consumedMessages)
+                if (shouldValidatePayloads(messageParams)) {
+                    expectedEvents == actualEvents
+                } else {
+                    validateHeaders(actualEvents, expectedEvents)
+                }
+            }.fix()
+
+    private fun parseMessageParams(input: InputStream): List<MessageParameters> {
+        val expectations = Json.createReader(input).readArray()
+        val messageParams = messageParametersParser.parse(expectations)
+
+        return messageParams.fold(
+                { throw IllegalArgumentException("Parsing error: " + it.message) },
+                {
+                    if (it.isEmpty())
+                        throw IllegalArgumentException("Message param list cannot be empty")
+                    it
+                }
+        )
+    }
+
+    private fun shouldValidatePayloads(parameters: List<MessageParameters>) =
+            parameters.all { it.messageType == MessageType.FIXED_PAYLOAD }
+
+    private fun validateHeaders(actual: List<VesEventOuterClass.VesEvent>,
+                                expected: List<VesEventOuterClass.VesEvent>): Boolean {
+        val consumedHeaders = actual.map { it.commonEventHeader }
+        val generatedHeaders = expected.map { it.commonEventHeader }
+        return generatedHeaders == consumedHeaders
+    }
+
+    private fun generateEvents(parameters: List<MessageParameters>): IO<List<VesEventOuterClass.VesEvent>> =
+            messageGenerator.createMessageFlux(parameters)
+                    .map(WireFrameMessage::payload)
+                    .map(ByteData::unsafeAsArray)
+                    .map(VesEventOuterClass.VesEvent::parseFrom)
+                    .collectList()
+                    .asIo()
+
+    private fun decodeConsumedEvents(consumedMessages: List<ByteArray>) =
+            consumedMessages.map(VesEventOuterClass.VesEvent::parseFrom)
+
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/DcaeAppApiServer.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/DcaeAppApiServer.kt
new file mode 100644
index 00000000..1eca9317
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/DcaeAppApiServer.kt
@@ -0,0 +1,101 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.adapters
+
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.DcaeAppSimulator
+import org.onap.dcae.collectors.veshv.utils.http.HttpConstants
+import org.onap.dcae.collectors.veshv.utils.http.HttpStatus
+import org.onap.dcae.collectors.veshv.utils.http.Responses
+import org.onap.dcae.collectors.veshv.utils.http.sendAndHandleErrors
+import org.onap.dcae.collectors.veshv.utils.http.sendOrError
+import ratpack.handling.Chain
+import ratpack.server.RatpackServer
+import ratpack.server.ServerConfig
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+class DcaeAppApiServer(private val simulator: DcaeAppSimulator) {
+    private val responseValid by lazy {
+        Responses.statusResponse(
+                name = "valid",
+                message = "validation succeeded"
+        )
+    }
+
+    private val responseInvalid by lazy {
+        Responses.statusResponse(
+                name = "invalid",
+                message = "validation failed",
+                httpStatus = HttpStatus.BAD_REQUEST
+        )
+    }
+
+
+    fun start(port: Int, kafkaTopics: Set<String>): IO<RatpackServer> =
+            simulator.listenToTopics(kafkaTopics).map {
+                RatpackServer.start { server ->
+                    server.serverConfig(ServerConfig.embedded().port(port))
+                            .handlers(::setupHandlers)
+                }
+            }
+
+    private fun setupHandlers(chain: Chain) {
+        chain
+                .put("configuration/topics") { ctx ->
+                    ctx.request.body.then { body ->
+                        val operation = simulator.listenToTopics(body.text)
+                        ctx.response.sendOrError(operation)
+                    }
+
+                }
+                .delete("messages") { ctx ->
+                    ctx.response.contentType(CONTENT_TEXT)
+                    ctx.response.sendOrError(simulator.resetState())
+                }
+                .get("messages/all/count") { ctx ->
+                    simulator.state().fold(
+                            { ctx.response.status(HttpConstants.STATUS_NOT_FOUND) },
+                            {
+                                ctx.response
+                                        .contentType(CONTENT_TEXT)
+                                        .send(it.messagesCount.toString())
+                            })
+                }
+                .post("messages/all/validate") { ctx ->
+                    ctx.request.body.then { body ->
+                        val response = simulator.validate(body.inputStream)
+                                .map { isValid ->
+                                    if (isValid) responseValid else responseInvalid
+                                }
+                        ctx.response.sendAndHandleErrors(response)
+                    }
+                }
+                .get("healthcheck") { ctx ->
+                    ctx.response.status(HttpConstants.STATUS_OK).send()
+                }
+    }
+
+    companion object {
+        private const val CONTENT_TEXT = "text/plain"
+    }
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/KafkaSource.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/KafkaSource.kt
new file mode 100644
index 00000000..10dedbdf
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/KafkaSource.kt
@@ -0,0 +1,66 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.adapters
+
+import arrow.effects.IO
+import org.apache.kafka.clients.consumer.ConsumerConfig
+import org.apache.kafka.common.serialization.ByteArrayDeserializer
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.Consumer
+import org.onap.dcae.collectors.veshv.utils.arrow.evaluateIo
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import reactor.kafka.receiver.KafkaReceiver
+import reactor.kafka.receiver.ReceiverOptions
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+class KafkaSource(private val receiver: KafkaReceiver<ByteArray, ByteArray>) {
+
+    fun start(): IO<Consumer> = IO {
+        val consumer = Consumer()
+        receiver.receive().map(consumer::update).evaluateIo().subscribe()
+        consumer
+    }
+
+    companion object {
+        private val logger = Logger(KafkaSource::class)
+
+        fun create(bootstrapServers: String, topics: Set<String>): KafkaSource {
+            return KafkaSource(KafkaReceiver.create(createReceiverOptions(bootstrapServers, topics)))
+        }
+
+        fun createReceiverOptions(bootstrapServers: String,
+                                  topics: Set<String>): ReceiverOptions<ByteArray, ByteArray>? {
+            val props = mapOf<String, Any>(
+                    ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG to bootstrapServers,
+                    ConsumerConfig.CLIENT_ID_CONFIG to "hv-collector-dcae-app-simulator",
+                    ConsumerConfig.GROUP_ID_CONFIG to "hv-collector-simulators",
+                    ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG to ByteArrayDeserializer::class.java,
+                    ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG to ByteArrayDeserializer::class.java,
+                    ConsumerConfig.AUTO_OFFSET_RESET_CONFIG to "earliest"
+            )
+            return ReceiverOptions.create<ByteArray, ByteArray>(props)
+                    .addAssignListener { partitions -> logger.debug { "Partitions assigned $partitions" } }
+                    .addRevokeListener { partitions -> logger.debug { "Partitions revoked $partitions" } }
+                    .subscription(topics)
+        }
+    }
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/ArgDcaeAppSimConfiguration.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/ArgDcaeAppSimConfiguration.kt
new file mode 100644
index 00000000..17eeb5b1
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/ArgDcaeAppSimConfiguration.kt
@@ -0,0 +1,67 @@
+/*
+* ============LICENSE_START=======================================================
+* dcaegen2-collectors-veshv
+* ================================================================================
+* Copyright (C) 2018 NOKIA
+* ================================================================================
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+* ============LICENSE_END=========================================================
+*/
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config
+
+import arrow.core.Option
+import arrow.core.fix
+import arrow.instances.option.monad.monad
+import arrow.typeclasses.binding
+import org.apache.commons.cli.CommandLine
+import org.apache.commons.cli.DefaultParser
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.utils.commandline.ArgBasedConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.KAFKA_SERVERS
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.KAFKA_TOPICS
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.LISTEN_PORT
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.MAXIMUM_PAYLOAD_SIZE_BYTES
+import org.onap.dcae.collectors.veshv.utils.commandline.intValue
+import org.onap.dcae.collectors.veshv.utils.commandline.stringValue
+
+class ArgDcaeAppSimConfiguration : ArgBasedConfiguration<DcaeAppSimConfiguration>(DefaultParser()) {
+    override val cmdLineOptionsList: List<CommandLineOption> = listOf(
+            LISTEN_PORT,
+            MAXIMUM_PAYLOAD_SIZE_BYTES,
+            KAFKA_SERVERS,
+            KAFKA_TOPICS
+    )
+
+    override fun getConfiguration(cmdLine: CommandLine): Option<DcaeAppSimConfiguration> =
+            Option.monad().binding {
+                val listenPort = cmdLine
+                        .intValue(LISTEN_PORT)
+                        .bind()
+                val maxPayloadSizeBytes = cmdLine
+                        .intValue(MAXIMUM_PAYLOAD_SIZE_BYTES, WireFrameMessage.DEFAULT_MAX_PAYLOAD_SIZE_BYTES)
+                val kafkaBootstrapServers = cmdLine
+                        .stringValue(KAFKA_SERVERS)
+                        .bind()
+                val kafkaTopics = cmdLine
+                        .stringValue(KAFKA_TOPICS)
+                        .map { it.split(",").toSet() }
+                        .bind()
+
+                DcaeAppSimConfiguration(
+                        listenPort,
+                        maxPayloadSizeBytes,
+                        kafkaBootstrapServers,
+                        kafkaTopics)
+            }.fix()
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/DcaeAppSimConfiguration.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/DcaeAppSimConfiguration.kt
new file mode 100644
index 00000000..a6fc8053
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/DcaeAppSimConfiguration.kt
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config
+
+data class DcaeAppSimConfiguration(
+        val apiPort: Int,
+        val maxPayloadSizeBytes: Int,
+        val kafkaBootstrapServers: String,
+        val kafkaTopics: Set<String>
+)
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/consumer.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/consumer.kt
new file mode 100644
index 00000000..1eefdbdb
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/consumer.kt
@@ -0,0 +1,70 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
+
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.adapters.KafkaSource
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import reactor.kafka.receiver.ReceiverRecord
+import java.util.concurrent.ConcurrentLinkedQueue
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class ConsumerState(private val messages: ConcurrentLinkedQueue<ByteArray>) {
+    val messagesCount: Int by lazy {
+        messages.size
+    }
+
+    val consumedMessages: List<ByteArray> by lazy {
+        messages.toList()
+    }
+}
+
+interface ConsumerStateProvider {
+    fun currentState(): ConsumerState
+    fun reset(): IO<Unit>
+}
+
+class Consumer : ConsumerStateProvider {
+
+    private var consumedMessages: ConcurrentLinkedQueue<ByteArray> = ConcurrentLinkedQueue()
+
+    override fun currentState(): ConsumerState = ConsumerState(consumedMessages)
+
+    override fun reset(): IO<Unit> = IO {
+        consumedMessages.clear()
+    }
+
+    fun update(record: ReceiverRecord<ByteArray, ByteArray>) = IO<Unit> {
+        logger.trace { "Updating stats for message from ${record.topic()}:${record.partition()}" }
+        consumedMessages.add(record.value())
+    }
+
+    companion object {
+        private val logger = Logger(Consumer::class)
+    }
+}
+
+class ConsumerFactory(private val kafkaBootstrapServers: String) {
+    fun createConsumerForTopics(kafkaTopics: Set<String>): IO<Consumer> =
+            KafkaSource.create(kafkaBootstrapServers, kafkaTopics.toSet()).start()
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/main.kt b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/main.kt
new file mode 100644
index 00000000..06ff4d59
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/main.kt
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp
+
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config.ArgDcaeAppSimConfiguration
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config.DcaeAppSimConfiguration
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.ConsumerFactory
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.DcaeAppSimulator
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.MessageStreamValidation
+import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.adapters.DcaeAppApiServer
+import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
+import org.onap.dcae.collectors.veshv.utils.arrow.unsafeRunEitherSync
+import org.onap.dcae.collectors.veshv.utils.arrow.unit
+import org.onap.dcae.collectors.veshv.utils.commandline.handleWrongArgumentErrorCurried
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.dcae.collectors.veshv.ves.message.generator.factory.MessageGeneratorFactory
+
+private const val PACKAGE_NAME = "org.onap.dcae.collectors.veshv.simulators.dcaeapp"
+private val logger = Logger(PACKAGE_NAME)
+const val PROGRAM_NAME = "java $PACKAGE_NAME.MainKt"
+
+fun main(args: Array<String>) =
+        ArgDcaeAppSimConfiguration().parse(args)
+                .mapLeft(handleWrongArgumentErrorCurried(PROGRAM_NAME))
+                .map(::startApp)
+                .unsafeRunEitherSync(
+                        { ex ->
+                            logger.error("Failed to start a server", ex)
+                            ExitFailure(1)
+                        },
+                        {
+                            logger.info("Started DCAE-APP Simulator API server")
+                        }
+                )
+
+
+private fun startApp(config: DcaeAppSimConfiguration): IO<Unit> {
+    logger.info("Using configuration: $config")
+    val consumerFactory = ConsumerFactory(config.kafkaBootstrapServers)
+    val messageStreamValidation = MessageStreamValidation(MessageGeneratorFactory.create(config.maxPayloadSizeBytes))
+    return DcaeAppApiServer(DcaeAppSimulator(consumerFactory, messageStreamValidation))
+            .start(config.apiPort, config.kafkaTopics)
+            .unit()
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/main/resources/logback.xml b/sources/hv-collector-dcae-app-simulator/src/main/resources/logback.xml
new file mode 100644
index 00000000..48da3b18
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/main/resources/logback.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <property name="LOG_FILE"
+    value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}ves-hv.log}"/>
+  <property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %-5level [%-40.40logger{10}] - %msg%n"/>
+
+  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>
+        %d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %highlight(%-5level) [%-40.40logger{10}] - %msg%n
+      </pattern>
+    </encoder>
+  </appender>
+
+    <appender name="ROLLING-FILE"
+      class="ch.qos.logback.core.rolling.RollingFileAppender">
+      <encoder>
+        <pattern>${FILE_LOG_PATTERN}</pattern>
+      </encoder>
+      <file>${LOG_FILE}</file>
+      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+        <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
+        <maxFileSize>50MB</maxFileSize>
+        <maxHistory>30</maxHistory>
+        <totalSizeCap>10GB</totalSizeCap>
+      </rollingPolicy>
+    </appender>
+
+  <logger name="org.onap.dcae.collectors.veshv" level="INFO"/>
+  <!--<logger name="reactor.ipc.netty" level="DEBUG"/>-->
+
+  <root level="INFO">
+      <appender-ref ref="CONSOLE"/>
+      <appender-ref ref="ROLLING-FILE"/>
+    </root>
+</configuration>
\ No newline at end of file
diff --git a/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/ConsumerTest.kt b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/ConsumerTest.kt
new file mode 100644
index 00000000..08558d76
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/ConsumerTest.kt
@@ -0,0 +1,82 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
+
+import org.apache.kafka.clients.consumer.ConsumerRecord
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import reactor.kafka.receiver.ReceiverRecord
+
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+internal class ConsumerTest : Spek({
+
+    lateinit var cut: Consumer
+
+    beforeEachTest {
+        cut = Consumer()
+    }
+
+    describe("Consumer which holds the state of received Kafka records") {
+        it("should contain empty state in the beginning") {
+            assertEmptyState(cut)
+        }
+
+        describe("update") {
+            val value = byteArrayOf(2)
+
+            beforeEachTest {
+                cut.update(receiverRecord(
+                        topic = "topic",
+                        key = byteArrayOf(1),
+                        value = value
+                )).unsafeRunSync()
+            }
+
+            it("should contain one message if it was updated once") {
+                assertState(cut, value)
+            }
+
+            it("should contain empty state message if it was reset after update") {
+                cut.reset().unsafeRunSync()
+                assertEmptyState(cut)
+            }
+        }
+    }
+})
+
+fun assertEmptyState(cut: Consumer) {
+    assertState(cut)
+}
+
+fun assertState(cut: Consumer, vararg values: ByteArray) {
+    assertThat(cut.currentState().consumedMessages)
+            .containsOnly(*values)
+    assertThat(cut.currentState().messagesCount)
+            .isEqualTo(values.size)
+}
+
+fun receiverRecord(topic: String, key: ByteArray, value: ByteArray) =
+        ReceiverRecord(ConsumerRecord(topic, 1, 100L, key, value), null)
diff --git a/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulatorTest.kt b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulatorTest.kt
new file mode 100644
index 00000000..e1641cbb
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulatorTest.kt
@@ -0,0 +1,183 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
+
+import arrow.core.Left
+import arrow.core.None
+import arrow.core.Some
+import arrow.effects.IO
+import com.google.protobuf.ByteString
+import com.nhaarman.mockitokotlin2.any
+import com.nhaarman.mockitokotlin2.eq
+import com.nhaarman.mockitokotlin2.mock
+import com.nhaarman.mockitokotlin2.never
+import com.nhaarman.mockitokotlin2.verify
+import com.nhaarman.mockitokotlin2.whenever
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.mockito.ArgumentMatchers.anySet
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import org.onap.ves.VesEventOuterClass.VesEvent
+import java.util.concurrent.ConcurrentLinkedQueue
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+internal class DcaeAppSimulatorTest : Spek({
+    lateinit var consumerFactory: ConsumerFactory
+    lateinit var messageStreamValidation: MessageStreamValidation
+    lateinit var consumer: Consumer
+    lateinit var cut: DcaeAppSimulator
+
+    beforeEachTest {
+        consumerFactory = mock()
+        messageStreamValidation = mock()
+        consumer = mock()
+        cut = DcaeAppSimulator(consumerFactory, messageStreamValidation)
+
+        whenever(consumerFactory.createConsumerForTopics(anySet())).thenReturn(IO.just(consumer))
+    }
+
+    fun consumerState(vararg messages: ByteArray) = ConsumerState(ConcurrentLinkedQueue(messages.toList()))
+
+    describe("listenToTopics") {
+        val topics = setOf("perf3gpp", "faults")
+
+        it("should fail when topic list is empty") {
+            val result = cut.listenToTopics(setOf()).attempt().unsafeRunSync()
+            assertThat(result.isLeft()).isTrue()
+        }
+
+        it("should fail when topic list contains empty strings") {
+            val result = cut.listenToTopics(setOf("perf3gpp", " ", "faults")).attempt().unsafeRunSync()
+            assertThat(result.isLeft()).isTrue()
+        }
+
+        it("should subscribe to given topics") {
+            cut.listenToTopics(topics).unsafeRunSync()
+            verify(consumerFactory).createConsumerForTopics(topics)
+        }
+
+        it("should subscribe to given topics when called with comma separated list") {
+            cut.listenToTopics("perf3gpp,faults").unsafeRunSync()
+            verify(consumerFactory).createConsumerForTopics(topics)
+        }
+
+        it("should handle errors") {
+            // given
+            val error = RuntimeException("WTF")
+            whenever(consumerFactory.createConsumerForTopics(anySet()))
+                    .thenReturn(IO.raiseError(error))
+
+            // when
+            val result = cut.listenToTopics("perf3gpp").attempt().unsafeRunSync()
+
+            // then
+            assertThat(result).isEqualTo(Left(error))
+        }
+    }
+
+    describe("state") {
+
+        it("should return None when topics hasn't been initialized") {
+            assertThat(cut.state()).isEqualTo(None)
+        }
+
+        describe("when topics are initialized") {
+            beforeEachTest {
+                cut.listenToTopics("perf3gpp").unsafeRunSync()
+            }
+
+            it("should return some state when it has been set") {
+                val state = consumerState()
+                whenever(consumer.currentState()).thenReturn(state)
+
+                assertThat(cut.state()).isEqualTo(Some(state))
+            }
+        }
+    }
+
+    describe("resetState") {
+        it("should do nothing when topics hasn't been initialized") {
+            cut.resetState().unsafeRunSync()
+            verify(consumer, never()).reset()
+        }
+
+        describe("when topics are initialized") {
+            beforeEachTest {
+                cut.listenToTopics("perf3gpp").unsafeRunSync()
+            }
+
+            it("should reset the state") {
+                // given
+                whenever(consumer.reset()).thenReturn(IO.unit)
+
+                // when
+                cut.resetState().unsafeRunSync()
+
+                // then
+                verify(consumer).reset()
+            }
+        }
+    }
+
+    describe("validate") {
+        beforeEachTest {
+            whenever(messageStreamValidation.validate(any(), any())).thenReturn(IO.just(true))
+        }
+
+        it("should use empty list when consumer is unavailable") {
+            // when
+            val result = cut.validate("['The JSON']".byteInputStream()).unsafeRunSync()
+
+            // then
+            verify(messageStreamValidation).validate(any(), eq(emptyList()))
+            assertThat(result).isTrue()
+        }
+
+        it("should delegate to MessageStreamValidation") {
+            // given
+            cut.listenToTopics("perf3gpp").unsafeRunSync()
+            whenever(consumer.currentState()).thenReturn(consumerState(vesEvent().toByteArray()))
+
+            // when
+            val result = cut.validate("['The JSON']".byteInputStream()).unsafeRunSync()
+
+            // then
+            verify(messageStreamValidation).validate(any(), any())
+            assertThat(result).isTrue()
+        }
+    }
+})
+
+
+private const val DUMMY_EVENT_ID = "aaa"
+private const val DUMMY_PAYLOAD = "payload"
+
+private fun vesEvent(eventId: String = DUMMY_EVENT_ID, payload: String = DUMMY_PAYLOAD): VesEvent {
+    return VesEvent.newBuilder()
+            .setCommonEventHeader(CommonEventHeader.newBuilder()
+                    .setEventId(eventId))
+            .setEventFields(ByteString.copyFrom(payload.toByteArray()))
+            .build()
+}
diff --git a/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/MessageStreamValidationTest.kt b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/MessageStreamValidationTest.kt
new file mode 100644
index 00000000..a631be76
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/MessageStreamValidationTest.kt
@@ -0,0 +1,214 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
+
+import arrow.core.Either
+import arrow.core.Right
+import com.google.protobuf.ByteString
+import com.nhaarman.mockitokotlin2.any
+import com.nhaarman.mockitokotlin2.mock
+import com.nhaarman.mockitokotlin2.whenever
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.fail
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.mockito.ArgumentMatchers.anyList
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import org.onap.ves.VesEventOuterClass.VesEvent
+import reactor.core.publisher.Flux
+import javax.json.stream.JsonParsingException
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+internal class MessageStreamValidationTest : Spek({
+    lateinit var messageParametersParser: MessageParametersParser
+    lateinit var messageGenerator: MessageGenerator
+    lateinit var cut: MessageStreamValidation
+
+    beforeEachTest {
+        messageParametersParser = mock()
+        messageGenerator = mock()
+        cut = MessageStreamValidation(messageGenerator, messageParametersParser)
+    }
+
+    fun givenParsedMessageParameters(vararg params: MessageParameters) {
+        whenever(messageParametersParser.parse(any())).thenReturn(Right(params.toList()))
+    }
+
+    describe("validate") {
+
+        it("should return error when JSON is invalid") {
+            // when
+            val result = cut.validate("[{invalid json}]".byteInputStream(), listOf()).attempt().unsafeRunSync()
+
+            // then
+            when(result) {
+                is Either.Left -> assertThat(result.a).isInstanceOf(JsonParsingException::class.java)
+                else -> fail("validation should fail")
+            }
+        }
+
+        it("should return error when message param list is empty") {
+            // given
+            givenParsedMessageParameters()
+
+            // when
+            val result = cut.validate(sampleJsonAsStream(), listOf()).attempt().unsafeRunSync()
+
+            // then
+            assertThat(result.isLeft()).isTrue()
+        }
+
+        describe("when validating headers only") {
+            it("should return true when messages are the same") {
+                // given
+                val jsonAsStream = sampleJsonAsStream()
+                val event = vesEvent()
+                val generatedWireProtocolFrame = WireFrameMessage(event.toByteArray())
+                val receivedMessageBytes = event.toByteArray()
+
+                givenParsedMessageParameters(MessageParameters(event.commonEventHeader, MessageType.VALID, 1))
+                whenever(messageGenerator.createMessageFlux(anyList())).thenReturn(Flux.just(generatedWireProtocolFrame))
+
+                // when
+                val result = cut.validate(jsonAsStream, listOf(receivedMessageBytes)).unsafeRunSync()
+
+                // then
+                assertThat(result).isTrue()
+            }
+
+            it("should return true when messages differ with payload only") {
+                // given
+                val jsonAsStream = sampleJsonAsStream()
+                val generatedEvent = vesEvent(payload = "payload A")
+                val receivedEvent = vesEvent(payload = "payload B")
+                val generatedWireProtocolFrame = WireFrameMessage(generatedEvent.toByteArray())
+                val receivedMessageBytes = receivedEvent.toByteArray()
+
+                givenParsedMessageParameters(MessageParameters(generatedEvent.commonEventHeader, MessageType.VALID, 1))
+                whenever(messageGenerator.createMessageFlux(anyList())).thenReturn(Flux.just(generatedWireProtocolFrame))
+
+                // when
+                val result = cut.validate(jsonAsStream, listOf(receivedMessageBytes)).unsafeRunSync()
+
+                // then
+                assertThat(result).isTrue()
+            }
+
+            it("should return false when messages are different") {
+                // given
+                val jsonAsStream = sampleJsonAsStream()
+                val generatedEvent = vesEvent()
+                val receivedEvent = vesEvent(eventId = "bbb")
+                val generatedWireProtocolFrame = WireFrameMessage(generatedEvent.toByteArray())
+                val receivedMessageBytes = receivedEvent.toByteArray()
+
+                givenParsedMessageParameters(MessageParameters(generatedEvent.commonEventHeader, MessageType.VALID, 1))
+                whenever(messageGenerator.createMessageFlux(anyList())).thenReturn(Flux.just(generatedWireProtocolFrame))
+
+                // when
+                val result = cut.validate(jsonAsStream, listOf(receivedMessageBytes)).unsafeRunSync()
+
+                // then
+                assertThat(result).isFalse()
+            }
+        }
+
+        describe("when validating whole messages") {
+            it("should return true when messages are the same") {
+                // given
+                val jsonAsStream = sampleJsonAsStream()
+                val event = vesEvent()
+                val generatedWireProtocolFrame = WireFrameMessage(event.toByteArray())
+                val receivedMessageBytes = event.toByteArray()
+
+                givenParsedMessageParameters(MessageParameters(event.commonEventHeader, MessageType.FIXED_PAYLOAD, 1))
+                whenever(messageGenerator.createMessageFlux(anyList())).thenReturn(Flux.just(generatedWireProtocolFrame))
+
+                // when
+                val result = cut.validate(jsonAsStream, listOf(receivedMessageBytes)).unsafeRunSync()
+
+                // then
+                assertThat(result).isTrue()
+            }
+
+            it("should return false when messages differ with payload only") {
+                // given
+                val jsonAsStream = sampleJsonAsStream()
+                val generatedEvent = vesEvent(payload = "payload A")
+                val receivedEvent = vesEvent(payload = "payload B")
+                val generatedWireProtocolFrame = WireFrameMessage(generatedEvent.toByteArray())
+                val receivedMessageBytes = receivedEvent.toByteArray()
+
+                givenParsedMessageParameters(MessageParameters(generatedEvent.commonEventHeader, MessageType.FIXED_PAYLOAD, 1))
+                whenever(messageGenerator.createMessageFlux(anyList())).thenReturn(Flux.just(generatedWireProtocolFrame))
+
+                // when
+                val result = cut.validate(jsonAsStream, listOf(receivedMessageBytes)).unsafeRunSync()
+
+                // then
+                assertThat(result).isFalse()
+            }
+
+            it("should return false when messages are different") {
+                // given
+                val jsonAsStream = sampleJsonAsStream()
+                val generatedEvent = vesEvent()
+                val receivedEvent = vesEvent("bbb")
+                val generatedWireProtocolFrame = WireFrameMessage(generatedEvent.toByteArray())
+                val receivedMessageBytes = receivedEvent.toByteArray()
+
+                givenParsedMessageParameters(MessageParameters(generatedEvent.commonEventHeader, MessageType.FIXED_PAYLOAD, 1))
+                whenever(messageGenerator.createMessageFlux(anyList())).thenReturn(Flux.just(generatedWireProtocolFrame))
+
+                // when
+                val result = cut.validate(jsonAsStream, listOf(receivedMessageBytes)).unsafeRunSync()
+
+                // then
+                assertThat(result).isFalse()
+            }
+        }
+    }
+})
+
+
+
+private const val DUMMY_EVENT_ID = "aaa"
+private const val DUMMY_PAYLOAD = "payload"
+
+private fun vesEvent(eventId: String = DUMMY_EVENT_ID, payload: String = DUMMY_PAYLOAD): VesEvent {
+    return VesEvent.newBuilder()
+            .setCommonEventHeader(CommonEventHeader.newBuilder()
+                    .setEventId(eventId))
+            .setEventFields(ByteString.copyFrom(payload.toByteArray()))
+            .build()
+}
+
+private const val sampleJsonArray = """["headersOnly"]"""
+
+private fun sampleJsonAsStream() = sampleJsonArray.byteInputStream()
diff --git a/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/KafkaSourceTest.kt b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/KafkaSourceTest.kt
new file mode 100644
index 00000000..de74f628
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/adapters/KafkaSourceTest.kt
@@ -0,0 +1,54 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.adapters
+
+import org.apache.kafka.clients.consumer.ConsumerConfig
+import org.apache.kafka.common.serialization.ByteArrayDeserializer
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk></piotr.jaszczyk>@nokia.com>
+ * @since August 2018
+ */
+internal class KafkaSourceTest : Spek({
+    val servers = "kafka1:9080,kafka2:9080"
+    val topics = setOf("topic1", "topic2")
+
+    describe("receiver options") {
+        val options = KafkaSource.createReceiverOptions(servers, topics)!!.toImmutable()
+
+        fun verifyProperty(key: String, expectedValue: Any) {
+            it("should have $key option set") {
+                assertThat(options.consumerProperty(key))
+                        .isEqualTo(expectedValue)
+            }
+        }
+
+        verifyProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, servers)
+        verifyProperty(ConsumerConfig.CLIENT_ID_CONFIG, "hv-collector-dcae-app-simulator")
+        verifyProperty(ConsumerConfig.GROUP_ID_CONFIG, "hv-collector-simulators")
+        verifyProperty(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, ByteArrayDeserializer::class.java)
+        verifyProperty(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, ByteArrayDeserializer::class.java)
+        verifyProperty(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest")
+    }
+})
\ No newline at end of file
diff --git a/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/ArgDcaeAppSimConfigurationTest.kt b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/ArgDcaeAppSimConfigurationTest.kt
new file mode 100644
index 00000000..7137fe12
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/config/ArgDcaeAppSimConfigurationTest.kt
@@ -0,0 +1,125 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.onap.dcae.collectors.veshv.tests.utils.parseExpectingFailure
+import org.onap.dcae.collectors.veshv.tests.utils.parseExpectingSuccess
+import org.onap.dcae.collectors.veshv.utils.commandline.WrongArgumentError
+
+
+internal class ArgDcaeAppSimConfigurationTest : Spek({
+
+    lateinit var cut: ArgDcaeAppSimConfiguration
+    val listenPort = "1234"
+    val kafkaBootstrapServers = "localhosting:123,localhostinger:12345"
+    val kafkaTopics = "top1,top2"
+
+    beforeEachTest {
+        cut = ArgDcaeAppSimConfiguration()
+    }
+
+    describe("parsing arguments") {
+        lateinit var result: DcaeAppSimConfiguration
+
+        given("all parameters are present in the long form") {
+
+            beforeEachTest {
+                result = cut.parseExpectingSuccess(
+                        "--listen-port", listenPort,
+                        "--kafka-bootstrap-servers", kafkaBootstrapServers,
+                        "--kafka-topics", kafkaTopics
+                )
+            }
+
+            it("should set proper port") {
+                assertThat(result.apiPort).isEqualTo(listenPort.toInt())
+            }
+
+
+            it("should set proper kafka bootstrap servers") {
+                assertThat(result.kafkaBootstrapServers).isEqualTo(kafkaBootstrapServers)
+            }
+
+            it("should set proper kafka topics") {
+                assertThat(result.kafkaTopics).isEqualTo(
+                        setOf("top1", "top2")
+                )
+            }
+        }
+
+        given("some parameters are present in the short form") {
+
+            beforeEachTest {
+                result = cut.parseExpectingSuccess(
+                        "-p", listenPort,
+                        "--kafka-bootstrap-servers", kafkaBootstrapServers,
+                        "-f", kafkaTopics)
+            }
+
+            it("should set proper port") {
+                assertThat(result.apiPort).isEqualTo(listenPort.toInt())
+            }
+
+            it("should set proper kafka bootstrap servers") {
+                assertThat(result.kafkaBootstrapServers).isEqualTo(kafkaBootstrapServers)
+            }
+
+            it("should set proper kafka topics") {
+                assertThat(result.kafkaTopics).isEqualTo(
+                        setOf("top1", "top2")
+                )
+            }
+        }
+
+        describe("required parameter is absent") {
+            given("kafka topics are missing") {
+                it("should throw exception") {
+                    assertThat(cut.parseExpectingFailure(
+                            "-p", listenPort,
+                            "-s", kafkaBootstrapServers
+                    )).isInstanceOf(WrongArgumentError::class.java)
+                }
+            }
+
+            given("kafka bootstrap servers is missing") {
+                it("should throw exception") {
+                    assertThat(cut.parseExpectingFailure(
+                            "-p", listenPort,
+                            "-f", kafkaTopics
+                    )).isInstanceOf(WrongArgumentError::class.java)
+                }
+            }
+
+            given("listen port is missing") {
+                it("should throw exception") {
+                    assertThat(cut.parseExpectingFailure(
+                            "-p", listenPort,
+                            "-s", kafkaBootstrapServers
+                    )).isInstanceOf(WrongArgumentError::class.java)
+                }
+            }
+        }
+    }
+})
\ No newline at end of file
diff --git a/sources/hv-collector-domain/pom.xml b/sources/hv-collector-domain/pom.xml
new file mode 100644
index 00000000..f60cb604
--- /dev/null
+++ b/sources/hv-collector-domain/pom.xml
@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-domain</artifactId>
+    <description>VES HighVolume Collector :: Domain</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>build-helper-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>com.github.os72</groupId>
+                <artifactId>protoc-jar-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>run</goal>
+                        </goals>
+                        <configuration>
+                            <protocArtifact>com.google.protobuf:protoc:${protobuf.version}</protocArtifact>
+                            <inputDirectories>
+                                <include>${project.basedir}/src/main/proto/event</include>
+                            </inputDirectories>
+                            <outputTargets>
+                                <outputTarget>
+                                    <type>java</type>
+                                    <addSources>none</addSources>
+                                    <outputDirectory>${protobuf-generated-files.directory}</outputDirectory>
+                                </outputTarget>
+                            </outputTargets>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib-jdk8</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor.netty</groupId>
+            <artifactId>reactor-netty</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-java</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-core</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-junit-platform-engine</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/ByteData.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/ByteData.kt
new file mode 100644
index 00000000..a1ebba37
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/ByteData.kt
@@ -0,0 +1,56 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+import io.netty.buffer.ByteBuf
+import java.nio.charset.Charset
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class ByteData(private val data: ByteArray) {
+
+    fun size() = data.size
+
+    /**
+     * This will expose mutable state of the data.
+     *
+     * @return wrapped data buffer (NOT a copy)
+     */
+    fun unsafeAsArray() = data
+
+    fun writeTo(byteBuf: ByteBuf) {
+        byteBuf.writeBytes(data)
+    }
+
+    fun asString(charset: Charset = Charset.defaultCharset()) = String(data, charset)
+
+    companion object {
+        val EMPTY = ByteData(byteArrayOf())
+
+        fun readFrom(byteBuf: ByteBuf, length: Int): ByteData {
+            val dataArray = ByteArray(length)
+            byteBuf.readBytes(dataArray)
+            return ByteData(dataArray)
+        }
+    }
+}
+
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/PayloadContentType.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/PayloadContentType.kt
new file mode 100644
index 00000000..7cbf3530
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/PayloadContentType.kt
@@ -0,0 +1,34 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+enum class PayloadContentType(val hexValue: Int) {
+    GOOGLE_PROTOCOL_BUFFER(0x0001);
+
+    companion object {
+        private val hexValues = PayloadContentType.values().map { it.hexValue }
+
+        fun isValidHexValue(hex: Int) = hexValues.contains(hex)
+    }
+}
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/SecurityConfiguration.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/SecurityConfiguration.kt
new file mode 100644
index 00000000..7f566a6d
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/SecurityConfiguration.kt
@@ -0,0 +1,50 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+import arrow.core.Option
+import java.io.InputStream
+import java.nio.file.Path
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+data class SecurityConfiguration(
+        val sslDisable: Boolean = false,
+        val keys: Option<SslKeys>)
+
+sealed class SslKeys
+
+data class OpenSslKeys(val privateKey: Path,
+                       val cert: Path,
+                       val trustedCert: Path) : SslKeys()
+
+data class JdkKeys(val keyStore: StreamProvider,
+                   val keyStorePassword: CharArray,
+                   val trustStore: StreamProvider,
+                   val trustStorePassword: CharArray) : SslKeys() {
+    fun forgetPasswords() {
+        keyStorePassword.fill('x')
+        trustStorePassword.fill('x')
+    }
+}
+
+typealias StreamProvider = () -> InputStream
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/VesEventDomain.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/VesEventDomain.kt
new file mode 100644
index 00000000..0b18337d
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/VesEventDomain.kt
@@ -0,0 +1,35 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+enum class VesEventDomain(val domainName: String) {
+    FAULT("fault"),
+    HEARTBEAT("heartbeat"),
+    MEASUREMENT("measurement"),
+    MOBILE_FLOW("mobileFlow"),
+    OTHER("other"),
+    PNF_REGISTRATION("pnfRegistration"),
+    SIP_SIGNALING("sipSignaling"),
+    STATE_CHANGE("stateChange"),
+    SYSLOG("syslog"),
+    THRESHOLD_CROSSING_ALERT("thresholdCrossingAlert"),
+    VOICE_QUALITY("voiceQuality"),
+    PERF3GPP("perf3gpp");
+}
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/codec.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/codec.kt
new file mode 100644
index 00000000..7fabdf14
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/codec.kt
@@ -0,0 +1,102 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+import arrow.core.Either
+import arrow.core.Left
+import arrow.core.Right
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage.Companion.RESERVED_BYTE_COUNT
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class WireFrameEncoder(private val allocator: ByteBufAllocator = ByteBufAllocator.DEFAULT) {
+
+    fun encode(frame: WireFrameMessage): ByteBuf = allocator
+            .buffer(WireFrameMessage.HEADER_SIZE + frame.payload.size())
+            .run {
+                writeByte(WireFrameMessage.MARKER_BYTE.toInt())
+                writeByte(frame.versionMajor.toInt())
+                writeByte(frame.versionMinor.toInt())
+                writeZero(RESERVED_BYTE_COUNT)
+                writeShort(frame.payloadType)
+                writeInt(frame.payloadSize)
+            }
+            .also {
+                frame.payload.writeTo(it)
+            }
+}
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class WireFrameDecoder(private val maxPayloadSizeBytes: Int) {
+
+    fun decodeFirst(byteBuf: ByteBuf): Either<WireFrameDecodingError, WireFrameMessage> =
+            when {
+                isEmpty(byteBuf) -> Left(EmptyWireFrame)
+                headerDoesNotFit(byteBuf) -> Left(MissingWireFrameHeaderBytes)
+                else -> parseWireFrame(byteBuf)
+            }
+
+    private fun isEmpty(byteBuf: ByteBuf) = byteBuf.readableBytes() < 1
+
+    private fun headerDoesNotFit(byteBuf: ByteBuf) = byteBuf.readableBytes() < WireFrameMessage.HEADER_SIZE
+
+    private fun parseWireFrame(byteBuf: ByteBuf): Either<WireFrameDecodingError, WireFrameMessage> {
+        byteBuf.markReaderIndex()
+
+        val mark = byteBuf.readUnsignedByte()
+        return when (mark) {
+            WireFrameMessage.MARKER_BYTE -> parsePayloadFrame(byteBuf)
+            else -> {
+                byteBuf.resetReaderIndex()
+                Left(InvalidWireFrameMarker(mark))
+            }
+        }
+    }
+
+    @Suppress("ReturnCount")
+    private fun parsePayloadFrame(byteBuf: ByteBuf): Either<WireFrameDecodingError, WireFrameMessage> {
+        val versionMajor = byteBuf.readUnsignedByte()
+        val versionMinor = byteBuf.readUnsignedByte()
+        byteBuf.skipBytes(RESERVED_BYTE_COUNT)
+        val payloadTypeRaw = byteBuf.readUnsignedShort()
+        val payloadSize = byteBuf.readInt()
+
+        if (payloadSize > maxPayloadSizeBytes) {
+            byteBuf.resetReaderIndex()
+            return Left(PayloadSizeExceeded(maxPayloadSizeBytes))
+        }
+
+        if (byteBuf.readableBytes() < payloadSize) {
+            byteBuf.resetReaderIndex()
+            return Left(MissingWireFramePayloadBytes)
+        }
+
+        val payload = ByteData.readFrom(byteBuf, payloadSize)
+
+        return Right(WireFrameMessage(payload, versionMajor, versionMinor, payloadTypeRaw, payloadSize))
+    }
+}
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/errors.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/errors.kt
new file mode 100644
index 00000000..0d55cebb
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/errors.kt
@@ -0,0 +1,48 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+
+sealed class WireFrameDecodingError(val message: String)
+
+
+// Invalid frame errors
+
+sealed class InvalidWireFrame(msg: String) : WireFrameDecodingError(msg)
+
+class InvalidWireFrameMarker(actualMarker: Short) : InvalidWireFrame(
+        "Invalid start of frame. Expected 0x%02X, but was 0x%02X"
+                .format(WireFrameMessage.MARKER_BYTE, actualMarker)
+)
+
+class PayloadSizeExceeded(maxPayloadSizeBytes: Int) :
+        InvalidWireFrame("payload size exceeds the limit ($maxPayloadSizeBytes bytes)")
+
+// Missing bytes errors
+
+sealed class MissingWireFrameBytes(msg: String) : WireFrameDecodingError(msg)
+
+object MissingWireFrameHeaderBytes : MissingWireFrameBytes("readable bytes < header size")
+object MissingWireFramePayloadBytes : MissingWireFrameBytes("readable bytes < payload size")
+object EmptyWireFrame : MissingWireFrameBytes("empty wire frame")
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/validation.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/validation.kt
new file mode 100644
index 00000000..1eb6239f
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/validation.kt
@@ -0,0 +1,38 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+import org.onap.ves.VesEventOuterClass
+
+val headerRequiredFieldDescriptors = listOf(
+        "version",
+        "domain",
+        /* field "sequence" has been removed from validation, since default value "0" is acceptable */
+        "priority",
+        "eventId",
+        "eventName",
+        "lastEpochMicrosec",
+        "startEpochMicrosec",
+        "reportingEntityName",
+        "sourceName",
+        "vesEventListenerVersion")
+        .map { fieldName -> VesEventOuterClass.CommonEventHeader.getDescriptor().findFieldByName(fieldName) }
+
+val vesEventListenerVersionRegex = """7\.[0-9].*""".toRegex()
diff --git a/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/wire_frame.kt b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/wire_frame.kt
new file mode 100644
index 00000000..de37b140
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/kotlin/org/onap/dcae/collectors/veshv/domain/wire_frame.kt
@@ -0,0 +1,86 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+/**
+ * Wire frame structure is presented bellow using ASN.1 notation. Please note that official supported specification
+ * should be available on
+ * [RTD documentation](https://onap.readthedocs.io/en/latest/submodules/dcaegen2.git/docs/sections/apis/ves-hv.html).
+ *
+ * ```
+ * -- Wire Transfer Protocol (binary, defined using ASN.1 notation)
+ * -- Encoding: use "direct encoding" to the number of octets indicated in the comment [n], using network byte order.
+ *
+ * WTP DEFINITIONS ::= BEGIN
+ *
+ * -- Used to sent data from the data provider
+ * WtpData ::= SEQUENCE {
+ * magic           INTEGER (0..255),           -- [1] always 0xAA
+ * versionMajor    INTEGER (0..255),           -- [1] major interface version, forward incompatible
+ *                                             --     with previous  major version, current value: 1
+ * versionMinor    INTEGER (0..255),           -- [1] minor interface version, forward compatible
+ *                                             --     with previous minor version, current value: 0
+ * reserved        OCTET STRING (SIZE (3)),    -- [3] reserved for future use (ignored, but use 0)
+ * payloadId       INTEGER (0..65535),         -- [2] payload type: 0x0000=undefined, 0x0001=ONAP VesEvent (protobuf)
+ * payloadLength   INTEGER (0..4294967295).    -- [4] payload length in octets
+ * payload         OCTET STRING                -- [length as per payloadLength]
+ * }
+ *
+ * END
+ * ```
+ *
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+data class WireFrameMessage(val payload: ByteData,
+                            val versionMajor: Short,
+                            val versionMinor: Short,
+                            val payloadType: Int,
+                            val payloadSize: Int
+) {
+    constructor(payload: ByteArray) : this(
+            ByteData(payload),
+            SUPPORTED_VERSION_MAJOR,
+            SUPPORTED_VERSION_MINOR,
+            PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+            payload.size)
+
+    fun isValid(): Boolean =
+            versionMajor == SUPPORTED_VERSION_MAJOR
+                    && PayloadContentType.isValidHexValue(payloadType)
+                    && payload.size() == payloadSize
+
+    companion object {
+        const val MARKER_BYTE: Short = 0xAA
+        const val RESERVED_BYTE_COUNT: Int = 3
+
+        const val SUPPORTED_VERSION_MAJOR: Short = 1
+        const val SUPPORTED_VERSION_MINOR: Short = 0
+
+        const val HEADER_SIZE =
+                1 * java.lang.Byte.BYTES +                           // marker
+                        2 * java.lang.Byte.BYTES +                   // single byte fields
+                        1 * java.lang.Short.BYTES +                  // double byte fields
+                        RESERVED_BYTE_COUNT * java.lang.Byte.BYTES + // reserved bytes
+                        1 * java.lang.Integer.BYTES                  // payload length
+
+        const val DEFAULT_MAX_PAYLOAD_SIZE_BYTES = 1024 * 1024
+    }
+}
diff --git a/sources/hv-collector-domain/src/main/proto/event/VesEvent.proto b/sources/hv-collector-domain/src/main/proto/event/VesEvent.proto
new file mode 100644
index 00000000..6d4c2307
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/proto/event/VesEvent.proto
@@ -0,0 +1,75 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+syntax = "proto3";
+package org.onap.ves;
+
+message VesEvent                            // top-level message, currently the maximum event size supported by the HV-VES Collector is 1 MiB
+{
+    CommonEventHeader commonEventHeader=1;  // required
+
+    bytes eventFields=2;                    // required, payload
+    // this field contains a domain-specific GPB message
+    // the field being opaque (bytes), the decoding of the payload occurs in a separate step
+    // the name of the GPB message for domain XYZ is XyzFields
+    // e.g. for domain==perf3gpp, the GPB message is Perf3gppFields
+}
+
+// VES CommonEventHeader adapted to GPB (Google Protocol Buffers)
+
+message CommonEventHeader
+{
+    string version = 1;                     // required, "version of the gpb common event header", current value "1.0"
+    string domain = 2;                      // required, "the eventing domain associated with the event", allowed values:
+    // fault, heartbeat, measurement, mobileFlow, other, pnfRegistration, sipSignaling,
+    // stateChange, syslog, thresholdCrossingAlert, voiceQuality, perf3gpp
+
+    uint32 sequence = 3;                    // required, "ordering of events communicated by an event source instance or 0 if not needed"
+
+    enum Priority
+    {
+        PRIORITY_NOT_PROVIDED = 0;
+        HIGH = 1;
+        MEDIUM = 2;
+        NORMAL = 3;
+        LOW = 4;
+    }
+    Priority priority = 4;                  // required, "processing priority"
+
+    string eventId = 5;                     // required, "event key that is unique to the event source"
+    string eventName = 6;                   // required, "unique event name"
+    string eventType = 7;                   // "for example - guest05,  platform"
+
+    uint64 lastEpochMicrosec = 8;           // required, "the latest unix time aka epoch time associated with the event from any component--as microseconds elapsed since 1 Jan 1970 not including leap seconds"
+    uint64 startEpochMicrosec = 9;          // required, "the earliest unix time aka epoch time associated with the event from any component--as microseconds elapsed since 1 Jan 1970 not including leap seconds"
+
+    string nfNamingCode = 10;               // "4 character network function type, aligned with vnf naming standards"
+    string nfcNamingCode = 11;              // "3 character network function component type, aligned with vfc naming standards"
+    string nfVendorName = 12;               // " Vendor Name providing the nf "
+
+    bytes reportingEntityId = 13;           // "UUID identifying the entity reporting the event, for example an OAM VM; must be populated by the ATT enrichment process"
+    string reportingEntityName = 14;        // required, "name of the entity reporting the event, for example, an EMS name; may be the same as sourceName should match A&AI entry"
+    bytes sourceId = 15;                    // "UUID identifying the entity experiencing the event issue; must be populated by the ATT enrichment process"
+    string sourceName = 16;                 // required, "name of the entity experiencing the event issued use A&AI entry"
+    string timeZoneOffset = 17;             // "Offset to GMT to indicate local time zone for the device"
+    string vesEventListenerVersion = 18;    // required, "Version of the VesEvent Listener", current value "7.2"
+
+    reserved "InternalHeaderFields";        // "enrichment fields for internal VES Event Listener service use only, not supplied by event sources"
+    reserved 100;
+}
diff --git a/sources/hv-collector-domain/src/main/proto/measurements/README.md b/sources/hv-collector-domain/src/main/proto/measurements/README.md
new file mode 100644
index 00000000..eb69eb4a
--- /dev/null
+++ b/sources/hv-collector-domain/src/main/proto/measurements/README.md
@@ -0,0 +1 @@
+Measurements data (data placed in VesEvent.eventFields) description should be available in [RTD documentation](https://onap.readthedocs.io/en/latest/submodules/dcaegen2.git/docs/sections/apis/ves-hv.html).
\ No newline at end of file
diff --git a/sources/hv-collector-domain/src/test/kotlin/org/onap/dcae/collectors/veshv/domain/WireFrameCodecsTest.kt b/sources/hv-collector-domain/src/test/kotlin/org/onap/dcae/collectors/veshv/domain/WireFrameCodecsTest.kt
new file mode 100644
index 00000000..f17a79ba
--- /dev/null
+++ b/sources/hv-collector-domain/src/test/kotlin/org/onap/dcae/collectors/veshv/domain/WireFrameCodecsTest.kt
@@ -0,0 +1,282 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.domain
+
+import arrow.core.Either
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.Unpooled
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.ObjectAssert
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import java.nio.charset.Charset
+import kotlin.test.assertTrue
+import kotlin.test.fail
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+object WireFrameCodecsTest : Spek({
+    val payloadAsString = "coffeebabe"
+    val maxPayloadSizeBytes = 1024
+    val encoder = WireFrameEncoder()
+    val decoder = WireFrameDecoder(maxPayloadSizeBytes)
+
+    fun createSampleFrame() = WireFrameMessage(payloadAsString.toByteArray(Charset.defaultCharset()))
+
+    fun encodeSampleFrame() =
+            createSampleFrame().let {
+                encoder.encode(it)
+            }
+
+    describe("Wire Frame invariants") {
+
+        given("input with unsupported major version") {
+            val input = WireFrameMessage(
+                    payload = ByteData.EMPTY,
+                    versionMajor = 100,
+                    versionMinor = 0,
+                    payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                    payloadSize = 0)
+
+            it("should fail validation") {
+                assertThat(input.isValid()).isFalse()
+            }
+        }
+
+        given("input with unsupported minor version") {
+            val input = WireFrameMessage(
+                    payload = ByteData.EMPTY,
+                    versionMajor = 1,
+                    versionMinor = 6,
+                    payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                    payloadSize = 0)
+
+            it("should pass validation") {
+                assertThat(input.isValid()).isTrue()
+            }
+        }
+
+        given("input with unsupported payload type") {
+            val input = WireFrameMessage(
+                    payload = ByteData.EMPTY,
+                    versionMajor = 1,
+                    versionMinor = 0,
+                    payloadType = 0x69,
+                    payloadSize = 0)
+
+            it("should fail validation") {
+                assertThat(input.isValid()).isFalse()
+            }
+        }
+
+        given("input with too small payload size") {
+            val input = WireFrameMessage(
+                    payload = ByteData(byteArrayOf(1, 2, 3)),
+                    versionMajor = 1,
+                    versionMinor = 0,
+                    payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                    payloadSize = 1)
+
+            it("should fail validation") {
+                assertThat(input.isValid()).isFalse()
+            }
+        }
+
+        given("input with too big payload size") {
+            val input = WireFrameMessage(
+                    payload = ByteData(byteArrayOf(1, 2, 3)),
+                    versionMajor = 1,
+                    versionMinor = 0,
+                    payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                    payloadSize = 8)
+
+            it("should fail validation") {
+                assertThat(input.isValid()).isFalse()
+            }
+        }
+
+        given("valid input") {
+            val payload = byteArrayOf(6, 9, 8, 6)
+            val input = WireFrameMessage(
+                    payload = ByteData(payload),
+                    versionMajor = 1,
+                    versionMinor = 0,
+                    payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                    payloadSize = payload.size)
+
+            it("should pass validation") {
+                assertThat(input.isValid()).isTrue()
+            }
+        }
+
+
+    }
+
+    describe("Wire Frame codec") {
+
+        describe("encode-decode methods' compatibility") {
+            val frame = createSampleFrame()
+            val encoded = encodeSampleFrame()
+            val decoded = decoder.decodeFirst(encoded).getMessageOrFail()
+
+            it("should decode major version") {
+                assertThat(decoded.versionMajor).isEqualTo(frame.versionMajor)
+            }
+
+            it("should decode minor version") {
+                assertThat(decoded.versionMinor).isEqualTo(frame.versionMinor)
+            }
+
+            it("should decode payload type") {
+                assertThat(decoded.payloadType).isEqualTo(frame.payloadType)
+            }
+
+            it("should decode payload size") {
+                assertThat(decoded.payloadSize).isEqualTo(frame.payloadSize)
+            }
+
+            it("should decode payload") {
+                assertThat(decoded.payload.asString())
+                        .isEqualTo(payloadAsString)
+            }
+        }
+
+
+        describe("TCP framing") {
+            // see "Dealing with a Stream-based Transport" on http://netty.io/wiki/user-guide-for-4.x.html#wiki-h3-11
+
+            it("should return error when buffer is empty") {
+                val buff = Unpooled.buffer()
+
+                decoder.decodeFirst(buff).assertFailedWithError { it.isInstanceOf(EmptyWireFrame::class.java) }
+                assertBufferIntact(buff)
+            }
+
+            it("should return error when given any single byte other than marker byte") {
+                val buff = Unpooled.buffer()
+                        .writeByte(0xEE)
+
+                decoder.decodeFirst(buff).assertFailedWithError { it.isInstanceOf(MissingWireFrameHeaderBytes::class.java) }
+                assertBufferIntact(buff)
+            }
+
+            it("should return error when payload message header does not fit") {
+                val buff = Unpooled.buffer()
+                        .writeByte(0xAA)
+                        .writeBytes("MOMOM".toByteArray())
+
+                decoder.decodeFirst(buff).assertFailedWithError { it.isInstanceOf(MissingWireFrameHeaderBytes::class.java) }
+                assertBufferIntact(buff)
+            }
+
+            it("should return error when length looks ok but first byte is not 0xAA") {
+                val buff = Unpooled.buffer()
+                        .writeByte(0xFF)
+                        .writeBytes("some garbage".toByteArray())
+
+                decoder.decodeFirst(buff).assertFailedWithError { it.isInstanceOf(InvalidWireFrameMarker::class.java) }
+                assertBufferIntact(buff)
+            }
+
+            it("should return error when payload doesn't fit") {
+                val buff = Unpooled.buffer()
+                        .writeBytes(encodeSampleFrame())
+                buff.writerIndex(buff.writerIndex() - 2)
+
+                decoder.decodeFirst(buff).assertFailedWithError { it.isInstanceOf(MissingWireFramePayloadBytes::class.java) }
+                assertBufferIntact(buff)
+            }
+
+            it("should decode payload message leaving rest unread") {
+                val buff = Unpooled.buffer()
+                        .writeBytes(encodeSampleFrame())
+                        .writeByte(0xAB)
+                val decoded = decoder.decodeFirst(buff).getMessageOrFail()
+
+                assertThat(decoded.isValid()).describedAs("should be valid").isTrue()
+                assertThat(buff.readableBytes()).isEqualTo(1)
+            }
+        }
+
+        describe("payload size limit") {
+
+            it("should decode successfully when payload size is equal 1 MiB") {
+
+                val payload = ByteArray(maxPayloadSizeBytes)
+                val input = WireFrameMessage(
+                        payload = ByteData(payload),
+                        versionMajor = 1,
+                        versionMinor = 0,
+                        payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                        payloadSize = payload.size)
+
+
+                assertTrue(decoder.decodeFirst(encoder.encode(input)).isRight())
+            }
+
+            it("should return error when payload exceeds 1 MiB") {
+
+                val payload = ByteArray(maxPayloadSizeBytes + 1)
+                val input = WireFrameMessage(
+                        payload = ByteData(payload),
+                        versionMajor = 1,
+                        versionMinor = 0,
+                        payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                        payloadSize = payload.size)
+                val buff = encoder.encode(input)
+
+                decoder.decodeFirst(buff)
+                        .assertFailedWithError { it.isInstanceOf(PayloadSizeExceeded::class.java) }
+                assertBufferIntact(buff)
+            }
+
+            it("should validate only first message") {
+
+                val payload = ByteArray(maxPayloadSizeBytes)
+                val input = WireFrameMessage(
+                        payload = ByteData(payload),
+                        versionMajor = 1,
+                        versionMinor = 0,
+                        payloadType = PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                        payloadSize = payload.size)
+
+
+                assertTrue(decoder.decodeFirst(encoder.encode(input).writeByte(0xAA)).isRight())
+            }
+        }
+    }
+})
+
+private fun assertBufferIntact(buff: ByteBuf) {
+    assertThat(buff.refCnt()).describedAs("buffer should not be released").isEqualTo(1)
+    assertThat(buff.readerIndex()).describedAs("buffer reader index should be intact").isEqualTo(0)
+}
+
+private fun <A, B> Either<A, B>.assertFailedWithError(assertj: (ObjectAssert<A>) -> Unit) {
+    fold({ assertj(assertThat(it)) }, { fail("Error expected") })
+}
+
+private fun Either<WireFrameDecodingError, WireFrameMessage>.getMessageOrFail(): WireFrameMessage =
+        fold({ fail(it.message) }, { it })
+
diff --git a/sources/hv-collector-domain/src/test/resources/logback.xml b/sources/hv-collector-domain/src/test/resources/logback.xml
new file mode 100644
index 00000000..0bf2cb02
--- /dev/null
+++ b/sources/hv-collector-domain/src/test/resources/logback.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<configuration>
+  <property name="LOG_FILE"
+    value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}ves-hv.log}"/>
+  <property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %-5level [%-40.40logger{10}] - %msg%n"/>
+
+  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>
+        %d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %highlight(%-5level) [%-40.40logger{10}] - %msg%n
+      </pattern>
+    </encoder>
+  </appender>
+
+    <appender name="ROLLING-FILE"
+      class="ch.qos.logback.core.rolling.RollingFileAppender">
+      <encoder>
+        <pattern>${FILE_LOG_PATTERN}</pattern>
+      </encoder>
+      <file>${LOG_FILE}</file>
+      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+        <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
+        <maxFileSize>50MB</maxFileSize>
+        <maxHistory>30</maxHistory>
+        <totalSizeCap>10GB</totalSizeCap>
+      </rollingPolicy>
+    </appender>
+
+  <logger name="org.onap.dcae.collectors.veshv" level="DEBUG"/>
+
+  <root level="INFO">
+      <appender-ref ref="CONSOLE"/>
+      <appender-ref ref="ROLLING-FILE"/>
+    </root>
+</configuration>
\ No newline at end of file
diff --git a/sources/hv-collector-health-check/pom.xml b/sources/hv-collector-health-check/pom.xml
new file mode 100644
index 00000000..3e5c6aa0
--- /dev/null
+++ b/sources/hv-collector-health-check/pom.xml
@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-health-check</artifactId>
+    <description>VES HighVolume Collector :: Health check</description>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-utils</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib-jdk8</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor.netty</groupId>
+            <artifactId>reactor-netty</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-api</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-junit-platform-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthDescription.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthDescription.kt
new file mode 100644
index 00000000..8c69406c
--- /dev/null
+++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthDescription.kt
@@ -0,0 +1,32 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.healthcheck.api
+
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since August 2018
+ */
+enum class HealthDescription(val message: String, val status: HealthStatus) {
+    HEALTHY("Healthy", HealthStatus.UP),
+    STARTING("Collector is starting", HealthStatus.OUT_OF_SERVICE),
+    RETRYING_FOR_CONSUL_CONFIGURATION("Consul configuration not available. Retrying.", HealthStatus.OUT_OF_SERVICE),
+    CONSUL_CONFIGURATION_NOT_FOUND("Consul configuration not found", HealthStatus.DOWN)
+}
diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt
new file mode 100644
index 00000000..853cc00f
--- /dev/null
+++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt
@@ -0,0 +1,39 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.healthcheck.api
+
+import org.onap.dcae.collectors.veshv.healthcheck.impl.HealthStateImpl
+import reactor.core.publisher.Flux
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since August 2018
+ */
+interface HealthState {
+
+    operator fun invoke(): Flux<HealthDescription>
+    fun changeState(healthDescription: HealthDescription)
+
+    companion object {
+        val INSTANCE: HealthState by lazy {
+            HealthStateImpl()
+        }
+    }
+}
diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStatus.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStatus.kt
new file mode 100644
index 00000000..1adf0cad
--- /dev/null
+++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStatus.kt
@@ -0,0 +1,33 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.healthcheck.api
+
+import org.onap.dcae.collectors.veshv.utils.http.HttpStatus
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+enum class HealthStatus(val httpResponseStatus: HttpStatus) {
+    UP(HttpStatus.OK),
+    DOWN(HttpStatus.SERVICE_UNAVAILABLE),
+    OUT_OF_SERVICE(HttpStatus.SERVICE_UNAVAILABLE),
+    UNKNOWN(HttpStatus.SERVICE_UNAVAILABLE)
+}
diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/factory/HealthCheckApiServer.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/factory/HealthCheckApiServer.kt
new file mode 100644
index 00000000..f12d9acf
--- /dev/null
+++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/factory/HealthCheckApiServer.kt
@@ -0,0 +1,63 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.healthcheck.factory
+
+import arrow.effects.IO
+import io.netty.handler.codec.http.HttpResponseStatus
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
+import org.onap.dcae.collectors.veshv.utils.NettyServerHandle
+import org.onap.dcae.collectors.veshv.utils.ServerHandle
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+import reactor.netty.http.server.HttpServer
+import reactor.netty.http.server.HttpServerRequest
+import reactor.netty.http.server.HttpServerResponse
+import java.net.SocketAddress
+import java.util.concurrent.atomic.AtomicReference
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since August 2018
+ */
+class HealthCheckApiServer(private val healthState: HealthState,
+                           private val listenAddress: SocketAddress) {
+
+    private val healthDescription: AtomicReference<HealthDescription> = AtomicReference(HealthDescription.STARTING)
+
+    fun start(): IO<ServerHandle> = IO {
+        healthState().subscribe(healthDescription::set)
+        val ctx = HttpServer.create()
+                .tcpConfiguration { it.addressSupplier { listenAddress } }
+                .route { routes ->
+                    routes.get("/health/ready", ::readinessHandler)
+                    routes.get("/health/alive", ::livenessHandler)
+                }
+        NettyServerHandle(ctx.bindNow())
+    }
+
+    private fun readinessHandler(_req: HttpServerRequest, resp: HttpServerResponse) =
+            healthDescription.get().run {
+                resp.status(status.httpResponseStatus.number).sendString(Flux.just(status.toString(), "\n", message))
+            }
+
+    private fun livenessHandler(_req: HttpServerRequest, resp: HttpServerResponse) =
+            resp.status(HttpResponseStatus.NOT_IMPLEMENTED).sendString(Mono.just("Not implemented yet"))
+}
diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateImpl.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateImpl.kt
new file mode 100644
index 00000000..c273f0a0
--- /dev/null
+++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateImpl.kt
@@ -0,0 +1,39 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.healthcheck.impl
+
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import reactor.core.publisher.Flux
+import reactor.core.publisher.FluxProcessor
+import reactor.core.publisher.UnicastProcessor
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since August 2018
+ */
+internal class HealthStateImpl : HealthState {
+
+    private val healthDescriptionStream: FluxProcessor<HealthDescription, HealthDescription> = UnicastProcessor.create()
+
+    override fun invoke(): Flux<HealthDescription> = healthDescriptionStream
+
+    override fun changeState(healthDescription: HealthDescription) = healthDescriptionStream.onNext(healthDescription)
+}
diff --git a/sources/hv-collector-health-check/src/test/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImplTest.kt b/sources/hv-collector-health-check/src/test/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImplTest.kt
new file mode 100644
index 00000000..e3fced2d
--- /dev/null
+++ b/sources/hv-collector-health-check/src/test/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImplTest.kt
@@ -0,0 +1,53 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.healthcheck.impl
+
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
+import reactor.test.StepVerifier
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since August 2018
+ */
+object HealthStateProviderImplTest : Spek({
+    describe("Health state provider") {
+            val healthStateProviderImpl = HealthStateImpl()
+            on("health state update") {
+                healthStateProviderImpl.changeState(HealthDescription.HEALTHY)
+                healthStateProviderImpl.changeState(HealthDescription.RETRYING_FOR_CONSUL_CONFIGURATION)
+                healthStateProviderImpl.changeState(HealthDescription.RETRYING_FOR_CONSUL_CONFIGURATION)
+                healthStateProviderImpl.changeState(HealthDescription.CONSUL_CONFIGURATION_NOT_FOUND)
+
+                it("should push new health state to the subscriber") {
+                    StepVerifier
+                            .create(healthStateProviderImpl().take(4))
+                            .expectNext(HealthDescription.HEALTHY)
+                            .expectNext(HealthDescription.RETRYING_FOR_CONSUL_CONFIGURATION)
+                            .expectNext(HealthDescription.RETRYING_FOR_CONSUL_CONFIGURATION)
+                            .expectNext(HealthDescription.CONSUL_CONFIGURATION_NOT_FOUND)
+                            .verifyComplete()
+                }
+            }
+    }
+})
\ No newline at end of file
diff --git a/sources/hv-collector-main/Dockerfile b/sources/hv-collector-main/Dockerfile
new file mode 100644
index 00000000..0170b645
--- /dev/null
+++ b/sources/hv-collector-main/Dockerfile
@@ -0,0 +1,19 @@
+FROM docker.io/openjdk:11-jre-slim
+
+LABEL copyright="Copyright (C) 2018 NOKIA"
+LABEL license.name="The Apache Software License, Version 2.0"
+LABEL license.url="http://www.apache.org/licenses/LICENSE-2.0"
+LABEL maintainer="Nokia Wroclaw ONAP Team"
+
+RUN apt-get update \
+        && apt-get install -y --no-install-recommends curl netcat \
+        && apt-get clean
+
+WORKDIR /opt/ves-hv-collector
+
+ENTRYPOINT ["java", "-cp", "*:", "org.onap.dcae.collectors.veshv.main.MainKt"]
+
+COPY target/libs/external/* ./
+COPY target/libs/internal/* ./
+COPY src/main/scripts/healthcheck.sh ./
+COPY target/hv-collector-main-*.jar ./
diff --git a/sources/hv-collector-main/pom.xml b/sources/hv-collector-main/pom.xml
new file mode 100644
index 00000000..a94d6346
--- /dev/null
+++ b/sources/hv-collector-main/pom.xml
@@ -0,0 +1,143 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-main</artifactId>
+    <description>VES HighVolume Collector :: Main</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>docker</id>
+            <activation>
+                <property>
+                    <name>!skipDocker</name>
+                </property>
+            </activation>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-dependency-plugin</artifactId>
+                    </plugin>
+                    <plugin>
+                        <groupId>io.fabric8</groupId>
+                        <artifactId>docker-maven-plugin</artifactId>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-core</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-health-check</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-test-utils</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects-instances</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-syntax</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>commons-cli</groupId>
+            <artifactId>commons-cli</artifactId>
+        </dependency>
+        <!-- See comment in main pom
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-native-epoll</artifactId>
+            <classifier>${os.detected.classifier}</classifier>
+        </dependency>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <classifier>${os.detected.classifier}</classifier>
+        </dependency>
+        -->
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-registry-jmx</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
diff --git a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfiguration.kt b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfiguration.kt
new file mode 100644
index 00000000..9b985f6f
--- /dev/null
+++ b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfiguration.kt
@@ -0,0 +1,118 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import arrow.core.Option
+import arrow.core.fix
+import arrow.instances.option.monad.monad
+import arrow.typeclasses.binding
+import org.apache.commons.cli.CommandLine
+import org.apache.commons.cli.DefaultParser
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.model.ConfigurationProviderParams
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.ssl.boundary.createSecurityConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.ArgBasedConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.CONSUL_CONFIG_URL
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.CONSUL_FIRST_REQUEST_DELAY
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.CONSUL_REQUEST_INTERVAL
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.DUMMY_MODE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.HEALTH_CHECK_API_PORT
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.IDLE_TIMEOUT_SEC
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.KEY_STORE_FILE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.KEY_STORE_PASSWORD
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.LISTEN_PORT
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.MAXIMUM_PAYLOAD_SIZE_BYTES
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.SSL_DISABLE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.TRUST_STORE_FILE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.TRUST_STORE_PASSWORD
+import org.onap.dcae.collectors.veshv.utils.commandline.hasOption
+import org.onap.dcae.collectors.veshv.utils.commandline.intValue
+import org.onap.dcae.collectors.veshv.utils.commandline.longValue
+import org.onap.dcae.collectors.veshv.utils.commandline.stringValue
+import java.net.InetSocketAddress
+import java.time.Duration
+
+internal class ArgVesHvConfiguration : ArgBasedConfiguration<ServerConfiguration>(DefaultParser()) {
+    override val cmdLineOptionsList = listOf(
+            HEALTH_CHECK_API_PORT,
+            LISTEN_PORT,
+            CONSUL_CONFIG_URL,
+            CONSUL_FIRST_REQUEST_DELAY,
+            CONSUL_REQUEST_INTERVAL,
+            SSL_DISABLE,
+            KEY_STORE_FILE,
+            KEY_STORE_PASSWORD,
+            TRUST_STORE_FILE,
+            TRUST_STORE_PASSWORD,
+            IDLE_TIMEOUT_SEC,
+            MAXIMUM_PAYLOAD_SIZE_BYTES,
+            DUMMY_MODE
+    )
+
+    override fun getConfiguration(cmdLine: CommandLine): Option<ServerConfiguration> =
+            Option.monad().binding {
+                val healthCheckApiPort = cmdLine.intValue(
+                        HEALTH_CHECK_API_PORT,
+                        DefaultValues.HEALTH_CHECK_API_PORT
+                )
+                val listenPort = cmdLine.intValue(LISTEN_PORT).bind()
+                val idleTimeoutSec = cmdLine.longValue(IDLE_TIMEOUT_SEC, DefaultValues.IDLE_TIMEOUT_SEC)
+                val maxPayloadSizeBytes = cmdLine.intValue(MAXIMUM_PAYLOAD_SIZE_BYTES,
+                        DefaultValues.MAX_PAYLOAD_SIZE_BYTES)
+                val dummyMode = cmdLine.hasOption(DUMMY_MODE)
+                val security = createSecurityConfiguration(cmdLine).bind()
+                val configurationProviderParams = createConfigurationProviderParams(cmdLine).bind()
+                ServerConfiguration(
+                        serverListenAddress = InetSocketAddress(listenPort),
+                        healthCheckApiListenAddress = InetSocketAddress(healthCheckApiPort),
+                        configurationProviderParams = configurationProviderParams,
+                        securityConfiguration = security,
+                        idleTimeout = Duration.ofSeconds(idleTimeoutSec),
+                        maximumPayloadSizeBytes = maxPayloadSizeBytes,
+                        dummyMode = dummyMode)
+            }.fix()
+
+    private fun createConfigurationProviderParams(cmdLine: CommandLine): Option<ConfigurationProviderParams> =
+            Option.monad().binding {
+                val configUrl = cmdLine.stringValue(CONSUL_CONFIG_URL).bind()
+                val firstRequestDelay = cmdLine.longValue(
+                        CONSUL_FIRST_REQUEST_DELAY,
+                        DefaultValues.CONSUL_FIRST_REQUEST_DELAY
+                )
+                val requestInterval = cmdLine.longValue(
+                        CONSUL_REQUEST_INTERVAL,
+                        DefaultValues.CONSUL_REQUEST_INTERVAL
+                )
+                ConfigurationProviderParams(
+                        configUrl,
+                        Duration.ofSeconds(firstRequestDelay),
+                        Duration.ofSeconds(requestInterval)
+                )
+            }.fix()
+
+    internal object DefaultValues {
+        const val HEALTH_CHECK_API_PORT = 6060
+        const val CONSUL_FIRST_REQUEST_DELAY = 10L
+        const val CONSUL_REQUEST_INTERVAL = 5L
+        const val IDLE_TIMEOUT_SEC = 60L
+        const val MAX_PAYLOAD_SIZE_BYTES = WireFrameMessage.DEFAULT_MAX_PAYLOAD_SIZE_BYTES
+    }
+}
diff --git a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/MicrometerMetrics.kt b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/MicrometerMetrics.kt
new file mode 100644
index 00000000..8a8b6d39
--- /dev/null
+++ b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/MicrometerMetrics.kt
@@ -0,0 +1,67 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import arrow.syntax.function.memoize
+import io.micrometer.core.instrument.Clock
+import io.micrometer.core.instrument.Counter
+import io.micrometer.core.instrument.MeterRegistry
+import io.micrometer.jmx.JmxConfig
+import io.micrometer.jmx.JmxMeterRegistry
+import org.onap.dcae.collectors.veshv.boundary.Metrics
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+class MicrometerMetrics(
+        private val registry: MeterRegistry = JmxMeterRegistry(JmxConfig.DEFAULT, Clock.SYSTEM)
+) : Metrics {
+
+    private val receivedBytes = registry.counter("data.received.bytes")
+    private val receivedMsgCount = registry.counter("messages.received.count")
+    private val receivedMsgBytes = registry.counter("messages.received.bytes")
+    private val sentCountTotal = registry.counter("messages.sent.count")
+
+    init {
+        registry.gauge("messages.processing.count", this) {
+            (receivedMsgCount.count() - sentCountTotal.count()).coerceAtLeast(0.0)
+        }
+    }
+
+    private val sentCount = { topic: String ->
+        registry.counter("messages.sent.count", "topic", topic)
+    }.memoize<String, Counter>()
+
+
+    override fun notifyBytesReceived(size: Int) {
+        receivedBytes.increment(size.toDouble())
+    }
+
+    override fun notifyMessageReceived(size: Int) {
+        receivedMsgCount.increment()
+        receivedMsgBytes.increment(size.toDouble())
+    }
+
+    override fun notifyMessageSent(topic: String) {
+        sentCountTotal.increment()
+        sentCount(topic).increment()
+    }
+}
diff --git a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
new file mode 100644
index 00000000..899f51fb
--- /dev/null
+++ b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
@@ -0,0 +1,55 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import arrow.effects.IO
+import arrow.effects.fix
+import arrow.effects.instances.io.monad.monad
+import arrow.typeclasses.binding
+import org.onap.dcae.collectors.veshv.main.servers.HealthCheckServer
+import org.onap.dcae.collectors.veshv.main.servers.VesServer
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
+import org.onap.dcae.collectors.veshv.utils.arrow.unsafeRunEitherSync
+import org.onap.dcae.collectors.veshv.utils.commandline.handleWrongArgumentErrorCurried
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+
+private val logger = Logger("org.onap.dcae.collectors.veshv.main")
+private const val PROGRAM_NAME = "java org.onap.dcae.collectors.veshv.main.MainKt"
+
+fun main(args: Array<String>) =
+        ArgVesHvConfiguration().parse(args)
+                .mapLeft(handleWrongArgumentErrorCurried(PROGRAM_NAME))
+                .map(::startAndAwaitServers)
+                .unsafeRunEitherSync(
+                        { ex ->
+                            logger.error("Failed to start a server", ex)
+                            ExitFailure(1)
+                        },
+                        { logger.info("Gentle shutdown") }
+                )
+
+private fun startAndAwaitServers(config: ServerConfiguration) =
+        IO.monad().binding {
+            logger.info("Using configuration: $config")
+            HealthCheckServer.start(config).bind()
+            VesServer.start(config).bind()
+                    .await().bind()
+        }.fix()
diff --git a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/HealthCheckServer.kt b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/HealthCheckServer.kt
new file mode 100644
index 00000000..ae59da69
--- /dev/null
+++ b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/HealthCheckServer.kt
@@ -0,0 +1,41 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main.servers
+
+import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
+import org.onap.dcae.collectors.veshv.healthcheck.factory.HealthCheckApiServer
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.utils.ServerHandle
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+object HealthCheckServer : ServerStarter() {
+    override fun startServer(config: ServerConfiguration) = createHealthCheckServer(config).start()
+
+    private fun createHealthCheckServer(config: ServerConfiguration) =
+            HealthCheckApiServer(
+                    HealthState.INSTANCE,
+                    config.healthCheckApiListenAddress)
+
+    override fun serverStartedMessage(handle: ServerHandle) =
+            "Health check server is up and listening on ${handle.host}:${handle.port}"
+}
diff --git a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/ServerStarter.kt b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/ServerStarter.kt
new file mode 100644
index 00000000..5c6f1277
--- /dev/null
+++ b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/ServerStarter.kt
@@ -0,0 +1,42 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main.servers
+
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.utils.ServerHandle
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+abstract class ServerStarter {
+    fun start(config: ServerConfiguration): IO<ServerHandle> =
+            startServer(config)
+                    .map { logger.info(serverStartedMessage(it)); it }
+
+    protected abstract fun startServer(config: ServerConfiguration): IO<ServerHandle>
+    protected abstract fun serverStartedMessage(handle: ServerHandle): String
+
+    companion object {
+        private val logger = Logger(ServerStarter::class)
+    }
+}
diff --git a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/VesServer.kt b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/VesServer.kt
new file mode 100644
index 00000000..d788c164
--- /dev/null
+++ b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/servers/VesServer.kt
@@ -0,0 +1,52 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main.servers
+
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.boundary.Server
+import org.onap.dcae.collectors.veshv.factory.CollectorFactory
+import org.onap.dcae.collectors.veshv.factory.ServerFactory
+import org.onap.dcae.collectors.veshv.impl.adapters.AdapterFactory
+import org.onap.dcae.collectors.veshv.main.MicrometerMetrics
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.utils.ServerHandle
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+object VesServer : ServerStarter() {
+    override fun startServer(config: ServerConfiguration): IO<ServerHandle> = createVesServer(config).start()
+
+    private fun createVesServer(config: ServerConfiguration): Server {
+        val sink = if (config.dummyMode) AdapterFactory.loggingSink() else AdapterFactory.kafkaSink()
+        val collectorProvider = CollectorFactory(
+                AdapterFactory.consulConfigurationProvider(config.configurationProviderParams),
+                sink,
+                MicrometerMetrics(),
+                config.maximumPayloadSizeBytes
+        ).createVesHvCollectorProvider()
+
+        return ServerFactory.createNettyTcpServer(config, collectorProvider)
+    }
+
+    override fun serverStartedMessage(handle: ServerHandle) =
+            "HighVolume VES Collector is up and listening on ${handle.host}:${handle.port}"
+}
diff --git a/sources/hv-collector-main/src/main/resources/logback.xml b/sources/hv-collector-main/src/main/resources/logback.xml
new file mode 100644
index 00000000..c76ff21a
--- /dev/null
+++ b/sources/hv-collector-main/src/main/resources/logback.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <property name="COMPONENT_NAME"
+              value="dcae-hv-ves-collector"/>
+    <property name="COMPONENT_SHORT_NAME"
+              value="hv-ves"/>
+
+    <property name="LOG_FILENAME" value="${COMPONENT_SHORT_NAME}"/>
+    <property name="LOG_PATH" value="/var/log/ONAP/${COMPONENT_NAME}"/>
+    <property name="ARCHIVE" value="${LOG_PATH}/archive"/>
+    <property name="FILE_LOG_PATTERN" value="
+%nopexception%50.50logger
+| %date{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC}
+| %highlight(%-5level)
+| %msg
+| %rootException
+| %thread%n"/>
+
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>${FILE_LOG_PATTERN}</pattern>
+        </encoder>
+    </appender>
+
+    <appender name="ROLLING-FILE"
+              class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <encoder>
+            <pattern>${FILE_LOG_PATTERN}</pattern>
+        </encoder>
+        <file>${LOG_PATH}/${LOG_FILENAME}.log</file>
+        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+            <FileNamePattern>${ARCHIVE}/${LOG_FILENAME}.%d{yyyy-MM-dd}.%i.log.gz</FileNamePattern>
+            <maxFileSize>50MB</maxFileSize>
+            <maxHistory>30</maxHistory>
+            <totalSizeCap>10GB</totalSizeCap>
+        </rollingPolicy>
+    </appender>
+
+    <logger name="org.onap.dcae.collectors.veshv" level="DEBUG"/>
+    <logger name="org.onap.dcae.collectors.veshv.impl.wire" level="DEBUG"/>
+    <logger name="org.onap.dcae.collectors.veshv.impl.adapters.kafka.KafkaSink" level="DEBUG"/>
+    <logger name="org.onap.dcae.collectors.veshv.impl.adapters.LoggingSinkProvider" level="DEBUG"/>
+    <!--<logger name="reactor.ipc.netty" level="DEBUG"/>-->
+
+    <root level="INFO">
+        <appender-ref ref="CONSOLE"/>
+        <appender-ref ref="ROLLING-FILE"/>
+    </root>
+</configuration>
\ No newline at end of file
diff --git a/sources/hv-collector-main/src/main/scripts/healthcheck.sh b/sources/hv-collector-main/src/main/scripts/healthcheck.sh
new file mode 100755
index 00000000..db62eece
--- /dev/null
+++ b/sources/hv-collector-main/src/main/scripts/healthcheck.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+curl -f http://localhost:${VESHV_HEALTH_CHECK_API_PORT:-6060}/health/ready || exit 1
+nc -vz localhost ${VESHV_LISTEN_PORT:-6061} || exit 2
diff --git a/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfigurationTest.kt b/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfigurationTest.kt
new file mode 100644
index 00000000..1aac6a09
--- /dev/null
+++ b/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfigurationTest.kt
@@ -0,0 +1,138 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.domain.JdkKeys
+import org.onap.dcae.collectors.veshv.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.tests.utils.parseExpectingFailure
+import org.onap.dcae.collectors.veshv.tests.utils.parseExpectingSuccess
+import org.onap.dcae.collectors.veshv.utils.commandline.WrongArgumentError
+import java.time.Duration
+import kotlin.test.assertNotNull
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+object ArgVesHvConfigurationTest : Spek({
+    lateinit var cut: ArgVesHvConfiguration
+    val healthCheckApiPort = "6070"
+    val configurationUrl = "http://test-address/test"
+    val firstRequestDelay = "10"
+    val requestInterval = "5"
+    val listenPort = "6969"
+    val keyStorePassword = "kspass"
+    val trustStorePassword = "tspass"
+
+    beforeEachTest {
+        cut = ArgVesHvConfiguration()
+    }
+
+    describe("parsing arguments") {
+        given("all parameters are present in the long form") {
+            lateinit var result: ServerConfiguration
+
+            beforeEachTest {
+                result = cut.parseExpectingSuccess(
+                        "--health-check-api-port", healthCheckApiPort,
+                        "--listen-port", listenPort,
+                        "--config-url", configurationUrl,
+                        "--first-request-delay", firstRequestDelay,
+                        "--request-interval", requestInterval,
+                        "--key-store", "/tmp/keys.p12",
+                        "--trust-store", "/tmp/trust.p12",
+                        "--key-store-password", keyStorePassword,
+                        "--trust-store-password", trustStorePassword
+                )
+            }
+
+            it("should set proper listen port") {
+                assertThat(result.serverListenAddress.port).isEqualTo(listenPort.toInt())
+            }
+
+
+            it("should set default listen address") {
+                assertThat(result.serverListenAddress.address.hostAddress).isEqualTo("0.0.0.0")
+            }
+
+            it("should set proper health check api port") {
+                assertThat(result.healthCheckApiListenAddress.port).isEqualTo(healthCheckApiPort.toInt())
+            }
+
+            it("should set default health check api address") {
+                assertThat(result.healthCheckApiListenAddress.address.hostAddress).isEqualTo("0.0.0.0")
+            }
+
+            it("should set proper first consul request delay") {
+                assertThat(result.configurationProviderParams.firstRequestDelay)
+                        .isEqualTo(Duration.ofSeconds(firstRequestDelay.toLong()))
+            }
+
+            it("should set proper consul request interval") {
+                assertThat(result.configurationProviderParams.requestInterval)
+                        .isEqualTo(Duration.ofSeconds(requestInterval.toLong()))
+            }
+
+            it("should set proper config url") {
+                assertThat(result.configurationProviderParams.configurationUrl)
+                        .isEqualTo(configurationUrl)
+            }
+
+            it("should set proper security configuration") {
+                assertThat(result.securityConfiguration.sslDisable).isFalse()
+
+                val keys = result.securityConfiguration.keys.orNull() as JdkKeys
+                assertNotNull(keys.keyStore)
+                assertNotNull(keys.trustStore)
+                assertThat(keys.keyStorePassword).isEqualTo(keyStorePassword.toCharArray())
+                assertThat(keys.trustStorePassword).isEqualTo(trustStorePassword.toCharArray())
+            }
+        }
+
+        describe("required parameter is absent") {
+            on("missing listen port") {
+                it("should throw exception") {
+                    assertThat(cut.parseExpectingFailure(
+                            "--config-url", configurationUrl,
+                            "--ssl-disable",
+                            "--first-request-delay", firstRequestDelay,
+                            "--request-interval", requestInterval)
+                    ).isInstanceOf(WrongArgumentError::class.java)
+                }
+            }
+            on("missing configuration url") {
+                it("should throw exception") {
+                    assertThat(cut.parseExpectingFailure(
+                            "--listen-port", listenPort,
+                            "--ssl-disable",
+                            "--first-request-delay", firstRequestDelay,
+                            "--request-interval", requestInterval)
+                    ).isInstanceOf(WrongArgumentError::class.java)
+                }
+            }
+        }
+    }
+})
\ No newline at end of file
diff --git a/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/MicrometerMetricsTest.kt b/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/MicrometerMetricsTest.kt
new file mode 100644
index 00000000..a379933e
--- /dev/null
+++ b/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/MicrometerMetricsTest.kt
@@ -0,0 +1,191 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import arrow.core.Try
+import io.micrometer.core.instrument.Counter
+import io.micrometer.core.instrument.Gauge
+import io.micrometer.core.instrument.search.RequiredSearch
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.data.Percentage
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+object MicrometerMetricsTest : Spek({
+    val doublePrecision = Percentage.withPercentage(0.5)
+    lateinit var registry: SimpleMeterRegistry
+    lateinit var cut: MicrometerMetrics
+
+    beforeEachTest {
+        registry = SimpleMeterRegistry()
+        cut = MicrometerMetrics(registry)
+    }
+
+    fun registrySearch() = RequiredSearch.`in`(registry)
+
+    fun <M, T> verifyMeter(search: RequiredSearch, map: (RequiredSearch) -> M, verifier: (M) -> T) =
+            Try {
+                map(search)
+            }.fold(
+                    { ex -> assertThat(ex).doesNotThrowAnyException() },
+                    verifier
+            )
+
+    fun <T> verifyGauge(name: String, verifier: (Gauge) -> T) =
+            verifyMeter(registrySearch().name(name), RequiredSearch::gauge, verifier)
+
+    fun <T> verifyCounter(search: RequiredSearch, verifier: (Counter) -> T) =
+            verifyMeter(search, RequiredSearch::counter, verifier)
+
+    fun <T> verifyCounter(name: String, verifier: (Counter) -> T) =
+            verifyCounter(registrySearch().name(name), verifier)
+
+    fun verifyAllCountersAreUnchangedBut(vararg changedCounters: String) {
+        registry.meters
+                .filter { it is Counter }
+                .filterNot { it.id.name in changedCounters }
+                .forEach { assertThat((it as Counter).count()).isCloseTo(0.0, doublePrecision) }
+    }
+
+    describe("notifyBytesReceived") {
+
+        on("data.received.bytes counter") {
+            val counterName = "data.received.bytes"
+
+            it("should increment counter") {
+                val bytes = 128
+                cut.notifyBytesReceived(bytes)
+
+                verifyCounter(counterName) { counter ->
+                    assertThat(counter.count()).isCloseTo(bytes.toDouble(), doublePrecision)
+                }
+            }
+
+            it("should leave all other counters unchanged") {
+                cut.notifyBytesReceived(128)
+                verifyAllCountersAreUnchangedBut(counterName)
+            }
+        }
+    }
+
+    describe("notifyMessageReceived") {
+        on("messages.received.count counter") {
+            val counterName = "messages.received.count"
+
+            it("should increment counter") {
+                cut.notifyMessageReceived(777)
+
+                verifyCounter(counterName) { counter ->
+                    assertThat(counter.count()).isCloseTo(1.0, doublePrecision)
+                }
+            }
+        }
+
+        on("messages.received.bytes counter") {
+            val counterName = "messages.received.bytes"
+
+            it("should increment counter") {
+                val bytes = 888
+                cut.notifyMessageReceived(bytes)
+
+                verifyCounter(counterName) { counter ->
+                    assertThat(counter.count()).isCloseTo(bytes.toDouble(), doublePrecision)
+                }
+            }
+        }
+
+        it("should leave all other counters unchanged") {
+            cut.notifyMessageReceived(128)
+            verifyAllCountersAreUnchangedBut("messages.received.count", "messages.received.bytes")
+        }
+    }
+
+    describe("notifyMessageSent") {
+        val topicName = "dmaap_topic_name"
+        val counterName = "messages.sent.count"
+
+        on("$counterName counter") {
+
+            it("should increment counter") {
+                cut.notifyMessageSent(topicName)
+
+                verifyCounter(counterName) { counter ->
+                    assertThat(counter.count()).isCloseTo(1.0, doublePrecision)
+                }
+            }
+        }
+
+        on("$counterName[topic=$topicName] counter") {
+
+            it("should increment counter") {
+                cut.notifyMessageSent(topicName)
+
+                verifyCounter(registrySearch().name(counterName).tag("topic", topicName)) { counter ->
+                    assertThat(counter.count()).isCloseTo(1.0, doublePrecision)
+                }
+            }
+        }
+
+        it("should leave all other counters unchanged") {
+            cut.notifyMessageSent(topicName)
+            verifyAllCountersAreUnchangedBut(counterName)
+        }
+    }
+
+    describe("processing gauge") {
+        it("should show difference between sent and received messages") {
+
+            on("positive difference") {
+                cut.notifyMessageReceived(128)
+                cut.notifyMessageReceived(256)
+                cut.notifyMessageReceived(256)
+                cut.notifyMessageSent("perf3gpp")
+                verifyGauge("messages.processing.count") { gauge ->
+                    assertThat(gauge.value()).isCloseTo(2.0, doublePrecision)
+                }
+            }
+
+            on("zero difference") {
+                cut.notifyMessageReceived(128)
+                cut.notifyMessageSent("perf3gpp")
+                verifyGauge("messages.processing.count") { gauge ->
+                    assertThat(gauge.value()).isCloseTo(0.0, doublePrecision)
+                }
+            }
+
+            on("negative difference") {
+                cut.notifyMessageReceived(128)
+                cut.notifyMessageSent("fault")
+                cut.notifyMessageSent("perf3gpp")
+                verifyGauge("messages.processing.count") { gauge ->
+                    assertThat(gauge.value()).isCloseTo(0.0, doublePrecision)
+                }
+            }
+        }
+    }
+
+})
diff --git a/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/NioBuffersTest.kt b/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/NioBuffersTest.kt
new file mode 100644
index 00000000..4eef28bb
--- /dev/null
+++ b/sources/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/NioBuffersTest.kt
@@ -0,0 +1,88 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.xdescribe
+import java.nio.ByteBuffer
+
+object NioBuffersTest : Spek({
+
+    fun Int.toKibibytes(): Int = this * 1024
+    fun Int.toMebibytes(): Int = this * 1024 * 1024
+
+    val BUFFER_SIZES = listOf(128.toKibibytes(), 512.toKibibytes(), 1.toMebibytes(), 2.toMebibytes())
+    val NUMBER_OF_ITERATIONS = 100
+
+    fun measureCopyTimeInNanos(bb1: ByteBuffer, bb2: ByteBuffer): Double {
+        bb1.clear()
+        bb2.clear()
+        val start = System.nanoTime()
+        while (bb2.remaining() > 0)
+            bb2.putInt(bb1.getInt())
+        val time = System.nanoTime() - start
+        val operations = bb1.capacity() / Integer.BYTES
+        return time.toDouble() / operations
+    }
+
+    fun measureAverageCopyTimeInNanos(bb1: ByteBuffer, bb2: ByteBuffer): Double =
+            (0..NUMBER_OF_ITERATIONS).map { measureCopyTimeInNanos(bb1, bb2) }.average()
+
+    fun measureAndPrintAverageCopyTime(message: String, bb1: ByteBuffer, bb2: ByteBuffer) {
+        val avg = measureAverageCopyTimeInNanos(bb1, bb2)
+        System.out.printf("Each putInt+getInt for %s took an average of %.1f ns%n", message, avg)
+    }
+
+    for (singleBufferSize in BUFFER_SIZES) {
+
+        xdescribe("$singleBufferSize bytes buffers") {
+            describe("direct buffers") {
+
+                val bb1 = ByteBuffer.allocateDirect(singleBufferSize)
+                val bb2 = ByteBuffer.allocateDirect(singleBufferSize)
+
+                it("should be heated up") {
+                    measureAverageCopyTimeInNanos(bb1, bb2)
+                }
+
+                it("should work fast") {
+                    measureAndPrintAverageCopyTime("direct buffers of $singleBufferSize bytes", bb1, bb2)
+                }
+            }
+
+            describe("on-heap buffers") {
+
+                val bb1 = ByteBuffer.allocate(singleBufferSize)
+                val bb2 = ByteBuffer.allocate(singleBufferSize)
+
+                it("should be heated up") {
+                    measureAverageCopyTimeInNanos(bb1, bb2)
+                }
+
+                it("should work fast") {
+                    measureAndPrintAverageCopyTime("onheap buffers of $singleBufferSize bytes", bb1, bb2)
+                }
+            }
+        }
+    }
+
+})
\ No newline at end of file
diff --git a/sources/hv-collector-ssl/pom.xml b/sources/hv-collector-ssl/pom.xml
new file mode 100644
index 00000000..6001ba94
--- /dev/null
+++ b/sources/hv-collector-ssl/pom.xml
@@ -0,0 +1,118 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-ssl</artifactId>
+    <description>VES HighVolume Collector :: SSL</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-domain</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-utils</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-test-utils</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <classifier>${os.detected.classifier}</classifier>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-syntax</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-junit-platform-engine</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
diff --git a/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ClientSslContextFactory.kt b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ClientSslContextFactory.kt
new file mode 100644
index 00000000..0ad3d7b4
--- /dev/null
+++ b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ClientSslContextFactory.kt
@@ -0,0 +1,52 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ssl.boundary
+
+import io.netty.handler.ssl.SslContextBuilder
+import io.netty.handler.ssl.SslProvider
+import org.onap.dcae.collectors.veshv.domain.JdkKeys
+import org.onap.dcae.collectors.veshv.domain.OpenSslKeys
+import org.onap.dcae.collectors.veshv.ssl.impl.SslFactories.keyManagerFactory
+import org.onap.dcae.collectors.veshv.ssl.impl.SslFactories.trustManagerFactory
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+open class ClientSslContextFactory : SslContextFactory() {
+
+    override fun openSslContext(openSslKeys: OpenSslKeys) = SslContextBuilder.forClient()
+            .keyManager(openSslKeys.cert.toFile(), openSslKeys.privateKey.toFile())
+            .trustManager(openSslKeys.trustedCert.toFile())
+            .sslProvider(SslProvider.OPENSSL)!!
+
+    override fun jdkContext(jdkKeys: JdkKeys) =
+            try {
+                val kmf = keyManagerFactory(jdkKeys)
+                val tmf = trustManagerFactory(jdkKeys)
+                SslContextBuilder.forClient()
+                        .keyManager(kmf)
+                        .trustManager(tmf)
+                        .sslProvider(SslProvider.JDK)!!
+            } finally {
+                jdkKeys.forgetPasswords()
+            }
+
+}
diff --git a/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ServerSslContextFactory.kt b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ServerSslContextFactory.kt
new file mode 100644
index 00000000..d26937fc
--- /dev/null
+++ b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ServerSslContextFactory.kt
@@ -0,0 +1,50 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ssl.boundary
+
+import io.netty.handler.ssl.SslContextBuilder
+import io.netty.handler.ssl.SslProvider
+import org.onap.dcae.collectors.veshv.domain.JdkKeys
+import org.onap.dcae.collectors.veshv.domain.OpenSslKeys
+import org.onap.dcae.collectors.veshv.ssl.impl.SslFactories.keyManagerFactory
+import org.onap.dcae.collectors.veshv.ssl.impl.SslFactories.trustManagerFactory
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+open class ServerSslContextFactory : SslContextFactory() {
+
+    override fun openSslContext(openSslKeys: OpenSslKeys) = SslContextBuilder
+            .forServer(openSslKeys.cert.toFile(), openSslKeys.privateKey.toFile())
+            .trustManager(openSslKeys.trustedCert.toFile())
+            .sslProvider(SslProvider.OPENSSL)!!
+
+    override fun jdkContext(jdkKeys: JdkKeys) =
+            try {
+                val kmf = keyManagerFactory(jdkKeys)
+                val tmf = trustManagerFactory(jdkKeys)
+                SslContextBuilder.forServer(kmf)
+                        .trustManager(tmf)
+                        .sslProvider(SslProvider.JDK)!!
+            } finally {
+                jdkKeys.forgetPasswords()
+            }
+}
diff --git a/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/SslContextFactory.kt b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/SslContextFactory.kt
new file mode 100644
index 00000000..cad81eef
--- /dev/null
+++ b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/SslContextFactory.kt
@@ -0,0 +1,58 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ssl.boundary
+
+import arrow.core.Option
+import io.netty.handler.ssl.ClientAuth
+import io.netty.handler.ssl.SslContext
+import io.netty.handler.ssl.SslContextBuilder
+import org.onap.dcae.collectors.veshv.domain.JdkKeys
+import org.onap.dcae.collectors.veshv.domain.OpenSslKeys
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+abstract class SslContextFactory {
+    fun createSslContext(secConfig: SecurityConfiguration): Option<SslContext> =
+            if (secConfig.sslDisable) {
+                Option.empty()
+            } else {
+                createSslContextWithConfiguredCerts(secConfig)
+                        .map { builder ->
+                            builder.clientAuth(ClientAuth.REQUIRE)
+                                    .build()
+                        }
+            }
+
+    protected open fun createSslContextWithConfiguredCerts(
+            secConfig: SecurityConfiguration
+    ): Option<SslContextBuilder> =
+            secConfig.keys.map { keys ->
+                when (keys) {
+                    is JdkKeys -> jdkContext(keys)
+                    is OpenSslKeys -> openSslContext(keys)
+                }
+            }
+
+    protected abstract fun openSslContext(openSslKeys: OpenSslKeys): SslContextBuilder
+    protected abstract fun jdkContext(jdkKeys: JdkKeys): SslContextBuilder
+}
diff --git a/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/utils.kt b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/utils.kt
new file mode 100644
index 00000000..d3640c87
--- /dev/null
+++ b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/utils.kt
@@ -0,0 +1,79 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ssl.boundary
+
+import arrow.core.None
+import arrow.core.Option
+import arrow.core.Some
+import arrow.core.fix
+import arrow.instances.option.monad.monad
+import arrow.typeclasses.binding
+import org.apache.commons.cli.CommandLine
+import org.onap.dcae.collectors.veshv.domain.JdkKeys
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption
+import org.onap.dcae.collectors.veshv.utils.commandline.hasOption
+import org.onap.dcae.collectors.veshv.utils.commandline.stringValue
+import java.io.File
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+
+
+const val KEY_STORE_FILE = "/etc/ves-hv/server.p12"
+const val TRUST_STORE_FILE = "/etc/ves-hv/trust.p12"
+
+fun createSecurityConfiguration(cmdLine: CommandLine): Option<SecurityConfiguration> {
+    val sslDisable = cmdLine.hasOption(CommandLineOption.SSL_DISABLE)
+
+    return if (sslDisable) disabledSecurityConfiguration(sslDisable) else enabledSecurityConfiguration(cmdLine)
+}
+
+private fun disabledSecurityConfiguration(sslDisable: Boolean): Some<SecurityConfiguration> {
+    return Some(SecurityConfiguration(
+            sslDisable = sslDisable,
+            keys = None
+    ))
+}
+
+private fun enabledSecurityConfiguration(cmdLine: CommandLine): Option<SecurityConfiguration> {
+    return Option.monad().binding {
+        val ksFile = cmdLine.stringValue(CommandLineOption.KEY_STORE_FILE, KEY_STORE_FILE)
+        val ksPass = cmdLine.stringValue(CommandLineOption.KEY_STORE_PASSWORD).bind()
+        val tsFile = cmdLine.stringValue(CommandLineOption.TRUST_STORE_FILE, TRUST_STORE_FILE)
+        val tsPass = cmdLine.stringValue(CommandLineOption.TRUST_STORE_PASSWORD).bind()
+
+        val keys = JdkKeys(
+                keyStore = streamFromFile(ksFile),
+                keyStorePassword = ksPass.toCharArray(),
+                trustStore = streamFromFile(tsFile),
+                trustStorePassword = tsPass.toCharArray()
+        )
+
+        SecurityConfiguration(
+                sslDisable = false,
+                keys = Some(keys)
+        )
+    }.fix()
+}
+
+private fun streamFromFile(file: String) = { File(file).inputStream() }
diff --git a/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/impl/SslFactories.kt b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/impl/SslFactories.kt
new file mode 100644
index 00000000..4a73a2aa
--- /dev/null
+++ b/sources/hv-collector-ssl/src/main/kotlin/org/onap/dcae/collectors/veshv/ssl/impl/SslFactories.kt
@@ -0,0 +1,55 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ssl.impl
+
+import org.onap.dcae.collectors.veshv.domain.JdkKeys
+import org.onap.dcae.collectors.veshv.domain.StreamProvider
+import java.security.KeyStore
+import javax.net.ssl.KeyManagerFactory
+import javax.net.ssl.TrustManagerFactory
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+internal object SslFactories {
+
+    fun trustManagerFactory(jdkKeys: JdkKeys): TrustManagerFactory? {
+        val tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+        val ts = loadKeyStoreFromFile(jdkKeys.trustStore, jdkKeys.trustStorePassword)
+        tmf.init(ts)
+        return tmf
+    }
+
+    fun keyManagerFactory(jdkKeys: JdkKeys): KeyManagerFactory? {
+        val kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm())
+        val ks = loadKeyStoreFromFile(jdkKeys.keyStore, jdkKeys.keyStorePassword)
+        kmf.init(ks, jdkKeys.keyStorePassword)
+        return kmf
+    }
+
+    private fun loadKeyStoreFromFile(streamProvider: StreamProvider, password: CharArray): KeyStore {
+        val ks = KeyStore.getInstance("pkcs12")
+        streamProvider().use {
+            ks.load(it, password)
+        }
+        return ks
+    }
+}
diff --git a/sources/hv-collector-ssl/src/test/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ServerSslContextFactoryTest.kt b/sources/hv-collector-ssl/src/test/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ServerSslContextFactoryTest.kt
new file mode 100644
index 00000000..7e0bc609
--- /dev/null
+++ b/sources/hv-collector-ssl/src/test/kotlin/org/onap/dcae/collectors/veshv/ssl/boundary/ServerSslContextFactoryTest.kt
@@ -0,0 +1,160 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ssl.boundary
+
+import arrow.core.Some
+import arrow.core.toOption
+import io.netty.handler.ssl.ClientAuth
+import io.netty.handler.ssl.JdkSslContext
+import io.netty.handler.ssl.ReferenceCountedOpenSslContext
+import io.netty.handler.ssl.SslContextBuilder
+import org.assertj.core.api.Assertions
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.domain.JdkKeys
+import org.onap.dcae.collectors.veshv.domain.OpenSslKeys
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+import java.nio.file.Paths
+import kotlin.test.assertTrue
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+object ServerSslContextFactoryTest : Spek({
+    val PASSWORD = "onap"
+
+    describe("SslContextFactory (OpenSSL)") {
+        val keys = OpenSslKeys(
+                privateKey = Paths.get("/", "tmp", "pk.pem"),
+                cert = Paths.get("/", "tmp", "cert.crt"),
+                trustedCert = Paths.get("/", "tmp", "clientCa.crt"))
+
+        given("config with security enabled") {
+            val sampleConfig = SecurityConfiguration(keys = Some(keys))
+
+            val cut = object : ServerSslContextFactory() {
+                override fun createSslContextWithConfiguredCerts(secConfig: SecurityConfiguration) =
+                    SslContextBuilder.forServer(resource("/ssl/ca.crt"), resource("/ssl/server.key")).toOption()
+
+                private fun resource(path: String) = ServerSslContextFactoryTest.javaClass.getResourceAsStream(path)
+            }
+
+            on("creation of SSL context") {
+                val result = cut.createSslContext(sampleConfig)
+
+                it("should be server context") {
+                    assertTrue(result.exists {
+                        it.isServer
+                    })
+                }
+
+                it("should use OpenSSL provider") {
+                    assertTrue(result.isDefined())
+                }
+
+                /*
+                 * It is too important to leave it untested on unit level.
+                 * Because of the Netty API design we need to do it this way.
+                 */
+                it("should turn on client authentication") {
+                    val clientAuth: ClientAuth = ReferenceCountedOpenSslContext::class.java
+                            .getDeclaredField("clientAuth")
+                            .run {
+                                isAccessible = true
+                                get(result.orNull()) as ClientAuth
+                            }
+                    Assertions.assertThat(clientAuth).isEqualTo(ClientAuth.REQUIRE)
+                }
+            }
+        }
+
+        given("config with SSL disabled") {
+            val securityConfiguration = SecurityConfiguration(
+                    sslDisable = true,
+                    keys = Some(keys)
+            )
+            val cut = ServerSslContextFactory()
+
+            on("creation of SSL context") {
+                val result = cut.createSslContext(securityConfiguration)
+
+                it("should not create any SSL context ") {
+                    assertThat(result.isDefined()).isFalse()
+                }
+            }
+        }
+    }
+
+    describe("SslContextFactory (JDK)") {
+        val keys = JdkKeys(
+                keyStore = resourceStreamProvider("/ssl/server.ks.pkcs12"),
+                keyStorePassword = PASSWORD.toCharArray(),
+                trustStore = resourceStreamProvider("/ssl/trust.pkcs12"),
+                trustStorePassword = PASSWORD.toCharArray()
+        )
+
+        given("config without disabled SSL") {
+            val sampleConfig = SecurityConfiguration(keys = Some(keys))
+            val cut = ServerSslContextFactory()
+
+            on("creation of SSL context") {
+                val result = cut.createSslContext(sampleConfig)
+
+                it("should work") {
+                    assertTrue(result.isDefined())
+                }
+
+                it("should be server context") {
+                    assertTrue(result.exists {
+                        it.isServer
+                    })
+                }
+
+                /*
+                 * It is too important to leave it untested on unit level.
+                 * Because of the Netty API design we need to do it this way.
+                 */
+                it("should turn on client authentication") {
+                    val clientAuth: ClientAuth = JdkSslContext::class.java
+                            .getDeclaredField("clientAuth")
+                            .run {
+                                isAccessible = true
+                                get(result.orNull()) as ClientAuth
+                            }
+                    Assertions.assertThat(clientAuth).isEqualTo(ClientAuth.REQUIRE)
+                }
+
+                it("should clear passwords so heap dumps won't contain them") {
+                    val xedPassword = PASSWORD.toCharArray()
+                    xedPassword.fill('x')
+                    Assertions.assertThat(keys.keyStorePassword).isEqualTo(xedPassword)
+                    Assertions.assertThat(keys.trustStorePassword).isEqualTo(xedPassword)
+                }
+            }
+        }
+    }
+})
+
+fun resourceStreamProvider(resource: String) = { ServerSslContextFactoryTest::class.java.getResourceAsStream(resource) }
diff --git a/sources/hv-collector-ssl/src/test/resources/logback-test.xml b/sources/hv-collector-ssl/src/test/resources/logback-test.xml
new file mode 100644
index 00000000..9a4eacfe
--- /dev/null
+++ b/sources/hv-collector-ssl/src/test/resources/logback-test.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <property name="LOG_FILE"
+    value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}ves-hv.log}"/>
+  <property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %-5level [%-40.40logger{10}] - %msg%n"/>
+
+  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>
+        %d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %highlight(%-5level) [%-40.40logger{10}] - %msg%n
+      </pattern>
+    </encoder>
+  </appender>
+
+    <appender name="ROLLING-FILE"
+      class="ch.qos.logback.core.rolling.RollingFileAppender">
+      <encoder>
+        <pattern>${FILE_LOG_PATTERN}</pattern>
+      </encoder>
+      <file>${LOG_FILE}</file>
+      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+        <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
+        <maxFileSize>50MB</maxFileSize>
+        <maxHistory>30</maxHistory>
+        <totalSizeCap>10GB</totalSizeCap>
+      </rollingPolicy>
+    </appender>
+
+  <logger name="org.onap.dcae.collectors.veshv" level="TRACE"/>
+
+  <root level="INFO">
+      <appender-ref ref="CONSOLE"/>
+      <appender-ref ref="ROLLING-FILE"/>
+    </root>
+</configuration>
diff --git a/sources/hv-collector-ssl/src/test/resources/ssl/ca.crt b/sources/hv-collector-ssl/src/test/resources/ssl/ca.crt
new file mode 100644
index 00000000..f9a05b90
--- /dev/null
+++ b/sources/hv-collector-ssl/src/test/resources/ssl/ca.crt
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/sources/hv-collector-ssl/src/test/resources/ssl/server.crt b/sources/hv-collector-ssl/src/test/resources/ssl/server.crt
new file mode 100644
index 00000000..2b06108b
--- /dev/null
+++ b/sources/hv-collector-ssl/src/test/resources/ssl/server.crt
@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/sources/hv-collector-ssl/src/test/resources/ssl/server.key b/sources/hv-collector-ssl/src/test/resources/ssl/server.key
new file mode 100644
index 00000000..40e25932
--- /dev/null
+++ b/sources/hv-collector-ssl/src/test/resources/ssl/server.key
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
+MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQC225TsqniWsqLQ
+YmOmmZxlpzBwhzU4pXiRfIZBUuT+ajPQVFx+zVv6ecEjXEFgQfNR60VZ3h6Zus32
+bVD7XKlwuL6U5P7Mt1k/K5RFPrr9WGFT/K9I8V69VmfLBnMTo4YjDEaTKiJqAC0W
+pN6Jm7ZLXzHNmHmm+CdufeNcKQ0kKFI0/C5V4X8o2wYo7ptC2PnKrLleapNqq86N
+GSw+pudWmlhMnsrEP9yWp2Crz2QynbwGDfvfLnenf643ViCV8MRBqdX6VtKfnxzl
+IYzAdWuYJDwyKVOvDBOgWSd8SWW9aqly0qZFIrTCFmUlsecTYXIn7J8VsoWX54Xf
+Bp8VNy3/AgMBAAECggEATzN4o7GKnast/hg/lU9/gEAUKQlHMgvp1woalHy1FsUl
+QBzqGzoTlr/Zudkhr/Gg1GCVH0Gn+2n//7aFlvohoeNDGPa+rijUDRpxFDUBhO4c
+6eXOfkedg2DDgBqBCYaQeOm+P8vGMCd3YBF1GiFJqgfHaIecWYeufJsmOSrGuFvK
+1OvHpvg4/FLLQqgVcVO812kD4UwSOKnZVnPuZ3pzQviUZvO8ZxI/LkzQB1EdH6u3
+rBtiGslYkiKl5cGpH39/Dx2nKhHfvSnkfsm7koB00Bl41yy61GPwdl4XUwg8LUhX
+TbsuoIPGTJX/2FUMn0UnAdDJm29hE4eyHyYOhew8gQKBgQDlAeUcnFr9uxe0i7cg
+6ctJlNIKJjlA1tH4qIMEytdn06STo9g2j8X5HVE0FX/3+gAYDtEVICTF66w8Y474
+aeazvf+TCfkxtEOiH2afvaNkIkfzKR0ceB48DECT0DCF7xha5rJVf/W4GpCz2WkZ
+ojDzw5ZVvzbx/FaF9A/IseJ63wKBgQDMaSjiephhdlCERGPdwWMg3AfthEX/VHM0
+YugbVjjYjDbn2pMkntW2hUuVXP8HD+9DnQZo0/c/hxe28Q5b+2fjZephdctnY8tL
+XWbaEerM2lxEjmrpA4jYTBZJ9nMsxkEYHGHb5I586aS2YaZ12e7DoKMFdl0EZzvi
+zGPIxSzQ4QKBgAxVv8t8uIH2M96rr997+FEsTOvzBx5w87pbCUOW0WdsRO8W4ix+
+LgGvDJKrncrzklG5apWit5hZi1ttWWQUADMqRrvay6tbtFDlNBfilQxttEZqroC8
+D5TYbBoKGrL8H+m1h2GHlOqns6ecTEbvL4fRvyU7OXBrURXCAZ+jxTktAoGACbQI
+O9AEAcRjCBRTBUjT0tB/E9hOllNE8LytNfb+1dC6HoFysK9Vh8eGEf4LISOxgO0o
+S7ucJgjcqFODEfy6LsI8wQmdcTf8g4RYiIuHMNhAvwRfsNX5HgNmn3Yye3Khzmoy
+fwS3etiAeCPkif2hZunuMykuOzJHVnnLVtF9UiECgYEA41d7FgUcnfPIyA5xLg7K
+lRgjFMsc68uzoCBQww2kio0HNJpdOPBJlg6oHHfYKriv2r9793jETRVwjSNPlKZb
+vqm9yhnbXuahYBZSgdo2W+NbhP6IbJ0vrF4t9g6byjancQptaCjNIr9St9g+Ugly
+8m0n3gIT/+Lr+it63cgk8SA=
+-----END PRIVATE KEY-----
diff --git a/sources/hv-collector-ssl/src/test/resources/ssl/server.ks.pkcs12 b/sources/hv-collector-ssl/src/test/resources/ssl/server.ks.pkcs12
new file mode 100644
index 00000000..a97eb65a
--- /dev/null
+++ b/sources/hv-collector-ssl/src/test/resources/ssl/server.ks.pkcs12
diff --git a/sources/hv-collector-ssl/src/test/resources/ssl/trust.pkcs12 b/sources/hv-collector-ssl/src/test/resources/ssl/trust.pkcs12
new file mode 100644
index 00000000..01b61373
--- /dev/null
+++ b/sources/hv-collector-ssl/src/test/resources/ssl/trust.pkcs12
diff --git a/sources/hv-collector-test-utils/pom.xml b/sources/hv-collector-test-utils/pom.xml
new file mode 100644
index 00000000..aebdd654
--- /dev/null
+++ b/sources/hv-collector-test-utils/pom.xml
@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-test-utils</artifactId>
+    <description>VES HighVolume Collector :: Test Utilities</description>
+
+    <properties>
+        <failIfMissingUnitTests>false</failIfMissingUnitTests>
+        <failIfMissingComponentTests>false</failIfMissingComponentTests>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-domain</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-utils</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-api</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-junit-platform-engine</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-test</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.nhaarman.mockitokotlin2</groupId>
+            <artifactId>mockito-kotlin</artifactId>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/arrow.kt b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/arrow.kt
new file mode 100644
index 00000000..54913744
--- /dev/null
+++ b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/arrow.kt
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.utils
+
+import arrow.core.Either
+import arrow.core.identity
+import org.assertj.core.api.AbstractAssert
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.ObjectAssert
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+class EitherAssert<A, B>(actual: Either<A, B>)
+    : AbstractAssert<EitherAssert<A, B>, Either<A, B>>(actual, EitherAssert::class.java) {
+
+    fun isLeft(): EitherAssert<A, B> {
+        isNotNull()
+        isInstanceOf(Either.Left::class.java)
+        return myself
+    }
+
+    fun left(): ObjectAssert<A> {
+        isLeft()
+        val left =  actual.fold(
+                ::identity,
+                { throw AssertionError("should be left") })
+        return assertThat(left)
+    }
+
+    fun isRight(): EitherAssert<A, B> {
+        isNotNull()
+        isInstanceOf(Either.Right::class.java)
+        return myself
+    }
+
+    fun right(): ObjectAssert<B> {
+        isRight()
+        val right =  actual.fold(
+                { throw AssertionError("should be right") },
+                ::identity)
+        return assertThat(right)
+    }
+}
diff --git a/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/assertions.kt b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/assertions.kt
new file mode 100644
index 00000000..d017b31b
--- /dev/null
+++ b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/assertions.kt
@@ -0,0 +1,55 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.utils
+
+import arrow.core.Either
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import java.time.Duration
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+
+private val logger = Logger("org.onap.dcae.collectors.veshv.tests.utils")
+
+object Assertions : org.assertj.core.api.Assertions() {
+    fun <A,B> assertThat(actual: Either<A, B>) = EitherAssert(actual)
+}
+
+
+fun waitUntilSucceeds(action: () -> Unit) = waitUntilSucceeds(50, Duration.ofMillis(10), action)
+
+fun waitUntilSucceeds(retries: Int, sleepTime: Duration, action: () -> Unit) {
+    var tryNum = 0
+    while (tryNum <= retries) {
+        tryNum++
+        try {
+            logger.debug("Try number $tryNum")
+            action()
+            break
+        } catch (ex: Throwable) {
+            if (tryNum >= retries)
+                throw ex
+            else
+                Thread.sleep(sleepTime.toMillis())
+        }
+    }
+}
diff --git a/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/configurations.kt b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/configurations.kt
new file mode 100644
index 00000000..57843b45
--- /dev/null
+++ b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/configurations.kt
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.utils
+
+import arrow.core.identity
+import org.onap.dcae.collectors.veshv.utils.commandline.ArgBasedConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.WrongArgumentError
+
+
+fun <T> ArgBasedConfiguration<T>.parseExpectingSuccess(vararg cmdLine: String): T =
+        parse(cmdLine).fold(
+                { throw AssertionError("Parsing result should be present") },
+                ::identity
+        )
+
+fun <T> ArgBasedConfiguration<T>.parseExpectingFailure(vararg cmdLine: String): WrongArgumentError =
+        parse(cmdLine).fold(
+                ::identity,
+                { throw AssertionError("parsing should have failed") }
+        )
\ No newline at end of file
diff --git a/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/messages.kt b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/messages.kt
new file mode 100644
index 00000000..db7777c2
--- /dev/null
+++ b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/messages.kt
@@ -0,0 +1,85 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.utils
+
+import com.google.protobuf.ByteString
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import io.netty.buffer.PooledByteBufAllocator
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage.Companion.RESERVED_BYTE_COUNT
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.PERF3GPP
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.OTHER
+
+import java.util.UUID.randomUUID
+
+
+val allocator: ByteBufAllocator = PooledByteBufAllocator.DEFAULT
+
+private fun ByteBuf.writeValidWireFrameHeaders() {
+    writeByte(0xAA)          // always 0xAA
+    writeByte(0x01)          // major version
+    writeByte(0x00)          // minor version
+    writeZero(RESERVED_BYTE_COUNT)  // reserved
+    writeShort(0x0001)       // content type = GPB
+}
+
+fun vesWireFrameMessage(domain: VesEventDomain = OTHER,
+                        id: String = randomUUID().toString()): ByteBuf =
+        allocator.buffer().run {
+            writeValidWireFrameHeaders()
+
+            val gpb = vesEvent(domain, id).toByteString().asReadOnlyByteBuffer()
+            writeInt(gpb.limit())  // ves event size in bytes
+            writeBytes(gpb)  // ves event as GPB bytes
+        }
+
+fun wireFrameMessageWithInvalidPayload(): ByteBuf = allocator.buffer().run {
+    writeValidWireFrameHeaders()
+
+    val invalidGpb = "some random data".toByteArray(Charsets.UTF_8)
+    writeInt(invalidGpb.size)  // ves event size in bytes
+    writeBytes(invalidGpb)
+}
+
+fun garbageFrame(): ByteBuf = allocator.buffer().run {
+    writeBytes("the meaning of life is &@)(*_!".toByteArray())
+}
+
+fun invalidWireFrame(): ByteBuf = allocator.buffer().run {
+    writeByte(0xAA)
+    writeByte(0x01)   // version major
+    writeByte(0x01)   // version minor
+}
+
+fun vesMessageWithPayloadOfSize(payloadSizeBytes: Int, domain: VesEventDomain = PERF3GPP): ByteBuf =
+        allocator.buffer().run {
+            writeValidWireFrameHeaders()
+
+            val gpb = vesEvent(
+                    domain = domain,
+                    eventFields = ByteString.copyFrom(ByteArray(payloadSizeBytes))
+            ).toByteString().asReadOnlyByteBuffer()
+
+            writeInt(gpb.limit())  // ves event size in bytes
+            writeBytes(gpb)  // ves event as GPB bytes
+        }
+
+
diff --git a/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/vesEvents.kt b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/vesEvents.kt
new file mode 100644
index 00000000..569f1a90
--- /dev/null
+++ b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/vesEvents.kt
@@ -0,0 +1,73 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.utils
+
+
+import com.google.protobuf.ByteString
+import com.google.protobuf.MessageLite
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.PERF3GPP
+import org.onap.ves.VesEventOuterClass
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import org.onap.ves.VesEventOuterClass.CommonEventHeader.Priority
+import java.util.UUID.randomUUID
+
+fun vesEvent(domain: VesEventDomain = PERF3GPP,
+             id: String = randomUUID().toString(),
+             eventFields: ByteString = ByteString.EMPTY
+): VesEventOuterClass.VesEvent = vesEvent(commonHeader(domain, id), eventFields)
+
+fun vesEvent(commonEventHeader: CommonEventHeader,
+             eventFields: ByteString = ByteString.EMPTY): VesEventOuterClass.VesEvent =
+        VesEventOuterClass.VesEvent.newBuilder()
+                .setCommonEventHeader(commonEventHeader)
+                .setEventFields(eventFields)
+                .build()
+
+fun commonHeader(domain: VesEventDomain = PERF3GPP,
+                 id: String = randomUUID().toString(),
+                 priority: Priority = Priority.NORMAL,
+                 vesEventListenerVersion: String = "7.0.2"): CommonEventHeader =
+        CommonEventHeader.newBuilder()
+                .setVersion("sample-version")
+                .setDomain(domain.domainName)
+                .setSequence(1)
+                .setPriority(priority)
+                .setEventId(id)
+                .setEventName("sample-event-name")
+                .setEventType("sample-event-type")
+                .setStartEpochMicrosec(120034455)
+                .setLastEpochMicrosec(120034455)
+                .setNfNamingCode("sample-nf-naming-code")
+                .setNfcNamingCode("sample-nfc-naming-code")
+                .setNfVendorName("vendor-name")
+                .setReportingEntityId(ByteString.copyFromUtf8("sample-reporting-entity-id"))
+                .setReportingEntityName("sample-reporting-entity-name")
+                .setSourceId(ByteString.copyFromUtf8("sample-source-id"))
+                .setSourceName("sample-source-name")
+                .setTimeZoneOffset("+1")
+                .setVesEventListenerVersion(vesEventListenerVersion)
+                .build()
+
+fun vesEventBytes(commonHeader: CommonEventHeader, byteString: ByteString = ByteString.EMPTY): ByteData =
+        vesEvent(commonHeader, byteString).toByteData()
+
+fun MessageLite.toByteData(): ByteData = ByteData(toByteArray())
\ No newline at end of file
diff --git a/sources/hv-collector-test-utils/src/main/resources/mockito-extensions/org.mockito.plugins.MockMaker b/sources/hv-collector-test-utils/src/main/resources/mockito-extensions/org.mockito.plugins.MockMaker
new file mode 100644
index 00000000..ca6ee9ce
--- /dev/null
+++ b/sources/hv-collector-test-utils/src/main/resources/mockito-extensions/org.mockito.plugins.MockMaker
@@ -0,0 +1 @@
+mock-maker-inline
\ No newline at end of file
diff --git a/sources/hv-collector-utils/pom.xml b/sources/hv-collector-utils/pom.xml
new file mode 100644
index 00000000..66879ff7
--- /dev/null
+++ b/sources/hv-collector-utils/pom.xml
@@ -0,0 +1,140 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-utils</artifactId>
+    <description>VES HighVolume Collector :: Utilities</description>
+
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-domain</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>commons-cli</groupId>
+            <artifactId>commons-cli</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-reflect</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-instances-data</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-syntax</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlinx</groupId>
+            <artifactId>kotlinx-coroutines-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.ratpack</groupId>
+            <artifactId>ratpack-core</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>javax.json</groupId>
+            <artifactId>javax.json-api</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-junit-platform-engine</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-test</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.nhaarman.mockitokotlin2</groupId>
+            <artifactId>mockito-kotlin</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish</groupId>
+            <artifactId>javax.json</artifactId>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/core.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/core.kt
new file mode 100644
index 00000000..7381592d
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/core.kt
@@ -0,0 +1,47 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.arrow
+
+import arrow.core.Either
+import arrow.core.Option
+import arrow.core.identity
+import arrow.syntax.collections.firstOption
+import java.util.concurrent.atomic.AtomicReference
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since July 2018
+ */
+
+fun <A> Either<A, A>.flatten() = fold(::identity, ::identity)
+
+fun <B> Either<Throwable, B>.rightOrThrow() = fold({ throw it }, ::identity)
+
+fun <A, B> Either<A, B>.rightOrThrow(mapper: (A) -> Throwable) = fold({ throw mapper(it) }, ::identity)
+
+fun <A> AtomicReference<A>.getOption() = Option.fromNullable(get())
+
+fun <A> Option.Companion.fromNullablesChain(firstValue: A?, vararg nextValues: () -> A?): Option<A> =
+        if (firstValue != null)
+            Option.just(firstValue)
+        else nextValues.asSequence()
+                .map { it() }
+                .filter { it != null }
+                .firstOption()
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/effects.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/effects.kt
new file mode 100644
index 00000000..05d13094
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/effects.kt
@@ -0,0 +1,69 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.arrow
+
+import arrow.core.Either
+import arrow.core.Left
+import arrow.core.Right
+import arrow.effects.IO
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+import kotlin.system.exitProcess
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+
+sealed class ExitCode {
+    abstract val code: Int
+
+    fun io() = IO {
+        exitProcess(code)
+    }
+}
+
+object ExitSuccess : ExitCode() {
+    override val code = 0
+}
+
+data class ExitFailure(override val code: Int) : ExitCode()
+
+fun Either<IO<Unit>, IO<Unit>>.unsafeRunEitherSync(onError: (Throwable) -> ExitCode, onSuccess: () -> Unit) =
+        flatten().attempt().unsafeRunSync().fold({ onError(it).io().unsafeRunSync() }, { onSuccess() })
+
+
+fun IO<Any>.unit() = map { Unit }
+
+fun <T> Mono<T>.asIo() = IO.async<T> { callback ->
+    subscribe({
+        callback(Right(it))
+    }, {
+        callback(Left(it))
+    })
+}
+
+fun <T> Flux<IO<T>>.evaluateIo(): Flux<T> =
+        flatMap { io ->
+            io.attempt().unsafeRunSync().fold(
+                    { Flux.error<T>(it) },
+                    { Flux.just<T>(it) }
+            )
+        }
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/ArgBasedConfiguration.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/ArgBasedConfiguration.kt
new file mode 100644
index 00000000..b14f1be5
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/ArgBasedConfiguration.kt
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.commandline
+
+import arrow.core.Either
+import arrow.core.Option
+import arrow.core.Try
+import arrow.core.flatMap
+import org.apache.commons.cli.CommandLine
+import org.apache.commons.cli.CommandLineParser
+import org.apache.commons.cli.Options
+import java.io.File
+import java.nio.file.Path
+import java.nio.file.Paths
+
+abstract class ArgBasedConfiguration<T>(private val parser: CommandLineParser) {
+    abstract val cmdLineOptionsList: List<CommandLineOption>
+
+    fun parse(args: Array<out String>): Either<WrongArgumentError, T> {
+        val parseResult = Try {
+            val commandLineOptions = cmdLineOptionsList.map { it.option }.fold(Options(), Options::addOption)
+            parser.parse(commandLineOptions, args)
+        }
+        return parseResult
+                .toEither()
+                .mapLeft { ex -> WrongArgumentError(ex, cmdLineOptionsList) }
+                .map(this::getConfiguration)
+                .flatMap {
+                    it.toEither {
+                        WrongArgumentError(
+                                message = "Unexpected error when parsing command line arguments",
+                                cmdLineOptionsList = cmdLineOptionsList)
+                    }
+                }
+    }
+
+    protected abstract fun getConfiguration(cmdLine: CommandLine): Option<T>
+
+    protected fun stringPathToPath(path: String): Path = Paths.get(File(path).toURI())
+}
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/CommandLineOption.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/CommandLineOption.kt
new file mode 100644
index 00000000..9439bff5
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/CommandLineOption.kt
@@ -0,0 +1,142 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.commandline
+
+import org.apache.commons.cli.Option
+
+
+enum class CommandLineOption(val option: Option, val required: Boolean = false) {
+    HEALTH_CHECK_API_PORT(Option.builder("H")
+            .longOpt("health-check-api-port")
+            .hasArg()
+            .desc("Health check rest api listen port")
+            .build()
+    ),
+    LISTEN_PORT(Option.builder("p")
+            .longOpt("listen-port")
+            .hasArg()
+            .desc("Listen port")
+            .build(),
+            required = true
+    ),
+    CONSUL_CONFIG_URL(Option.builder("c")
+            .longOpt("config-url")
+            .hasArg()
+            .desc("URL of ves configuration on consul")
+            .build(),
+            required = true
+    ),
+    CONSUL_FIRST_REQUEST_DELAY(Option.builder("d")
+            .longOpt("first-request-delay")
+            .hasArg()
+            .desc("Delay of first request to consul in seconds")
+            .build()
+    ),
+    CONSUL_REQUEST_INTERVAL(Option.builder("I")
+            .longOpt("request-interval")
+            .hasArg()
+            .desc("Interval of consul configuration requests in seconds")
+            .build()
+    ),
+    VES_HV_PORT(Option.builder("v")
+            .longOpt("ves-port")
+            .hasArg()
+            .desc("VesHvCollector port")
+            .build(),
+            required = true
+    ),
+    VES_HV_HOST(Option.builder("h")
+            .longOpt("ves-host")
+            .hasArg()
+            .desc("VesHvCollector host")
+            .build(),
+            required = true
+    ),
+    KAFKA_SERVERS(Option.builder("s")
+            .longOpt("kafka-bootstrap-servers")
+            .hasArg()
+            .desc("Comma-separated Kafka bootstrap servers in <host>:<port> format")
+            .build(),
+            required = true
+    ),
+    KAFKA_TOPICS(Option.builder("f")
+            .longOpt("kafka-topics")
+            .hasArg()
+            .desc("Comma-separated Kafka topics")
+            .build(),
+            required = true
+    ),
+    SSL_DISABLE(Option.builder("l")
+            .longOpt("ssl-disable")
+            .desc("Disable SSL encryption")
+            .build()
+    ),
+    KEY_STORE_FILE(Option.builder("k")
+            .longOpt("key-store")
+            .hasArg()
+            .desc("Key store in PKCS12 format")
+            .build()
+    ),
+    KEY_STORE_PASSWORD(Option.builder("kp")
+            .longOpt("key-store-password")
+            .hasArg()
+            .desc("Key store password")
+            .build()
+    ),
+    TRUST_STORE_FILE(Option.builder("t")
+            .longOpt("trust-store")
+            .hasArg()
+            .desc("File with trusted certificate bundle in PKCS12 format")
+            .build()
+    ),
+    TRUST_STORE_PASSWORD(Option.builder("tp")
+            .longOpt("trust-store-password")
+            .hasArg()
+            .desc("Trust store password")
+            .build()
+    ),
+    IDLE_TIMEOUT_SEC(Option.builder("i")
+            .longOpt("idle-timeout-sec")
+            .hasArg()
+            .desc("""Idle timeout for remote hosts. After given time without any data exchange the
+                |connection might be closed.""".trimMargin())
+            .build()
+    ),
+    MAXIMUM_PAYLOAD_SIZE_BYTES(Option.builder("m")
+            .longOpt("max-payload-size")
+            .hasArg()
+            .desc("Maximum supported payload size in bytes")
+            .build()
+    ),
+    DUMMY_MODE(Option.builder("u")
+            .longOpt("dummy")
+            .desc("If present will start in dummy mode (dummy external services)")
+            .build()
+    );
+
+    fun environmentVariableName(prefix: String = DEFAULT_ENV_PREFIX): String =
+            option.longOpt.toUpperCase().replace('-', '_').let { mainPart ->
+                "${prefix}_${mainPart}"
+            }
+
+    companion object {
+        private const val DEFAULT_ENV_PREFIX = "VESHV"
+    }
+}
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/WrongArgumentError.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/WrongArgumentError.kt
new file mode 100644
index 00000000..9c2a20c1
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/WrongArgumentError.kt
@@ -0,0 +1,70 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.commandline
+
+import arrow.core.Option
+import org.apache.commons.cli.HelpFormatter
+import org.apache.commons.cli.Options
+
+
+data class WrongArgumentError(
+        val message: String,
+        val cause: Throwable? = null,
+        val cmdLineOptionsList: List<CommandLineOption>) {
+
+    constructor(par: Throwable, cmdLineOptionsList: List<CommandLineOption>) :
+            this(par.message ?: "",
+                    par,
+                    cmdLineOptionsList)
+
+    fun printMessage() {
+        println(message)
+    }
+
+    fun printHelp(programName: String) {
+        val formatter = HelpFormatter()
+        val footer = "All parameters can be specified as environment variables using upper-snake-case full " +
+                "name with prefix `VESHV_`."
+
+        formatter.printHelp(
+                programName,
+                generateRequiredParametersNote(cmdLineOptionsList),
+                getOptions(),
+                footer)
+    }
+
+    private fun getOptions() = cmdLineOptionsList.map { it.option }.fold(Options(), Options::addOption)
+
+    companion object {
+        fun generateRequiredParametersNote(cmdLineOptionsList: List<CommandLineOption>): String {
+            val requiredParams = Option.fromNullable(cmdLineOptionsList.filter { it.required }
+                    .takeUnless { it.isEmpty() })
+            return requiredParams.fold(
+                    { "" },
+                    {
+                        it.map { commandLineOption -> commandLineOption.option.opt }
+                                .joinToString(prefix = "Required parameters: ", separator = ", ")
+                    }
+            )
+        }
+    }
+
+}
+
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/extensions.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/extensions.kt
new file mode 100644
index 00000000..a8414472
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/extensions.kt
@@ -0,0 +1,66 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.commandline
+
+import arrow.core.Option
+import arrow.core.getOrElse
+import arrow.effects.IO
+import arrow.syntax.function.curried
+import org.apache.commons.cli.CommandLine
+import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
+import org.onap.dcae.collectors.veshv.utils.arrow.fromNullablesChain
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+
+fun handleWrongArgumentError(programName: String, err: WrongArgumentError): IO<Unit> = IO {
+    err.printMessage()
+    err.printHelp(programName)
+}.flatMap { ExitFailure(2).io() }
+
+val handleWrongArgumentErrorCurried = ::handleWrongArgumentError.curried()
+
+fun CommandLine.longValue(cmdLineOpt: CommandLineOption, default: Long): Long =
+        longValue(cmdLineOpt).getOrElse { default }
+
+fun CommandLine.stringValue(cmdLineOpt: CommandLineOption, default: String): String =
+        optionValue(cmdLineOpt).getOrElse { default }
+
+fun CommandLine.intValue(cmdLineOpt: CommandLineOption, default: Int): Int =
+        intValue(cmdLineOpt).getOrElse { default }
+
+fun CommandLine.intValue(cmdLineOpt: CommandLineOption): Option<Int> =
+        optionValue(cmdLineOpt).map(String::toInt)
+
+fun CommandLine.longValue(cmdLineOpt: CommandLineOption): Option<Long> =
+        optionValue(cmdLineOpt).map(String::toLong)
+
+fun CommandLine.stringValue(cmdLineOpt: CommandLineOption): Option<String> =
+        optionValue(cmdLineOpt)
+
+fun CommandLine.hasOption(cmdLineOpt: CommandLineOption): Boolean =
+        this.hasOption(cmdLineOpt.option.opt) ||
+                System.getenv(cmdLineOpt.environmentVariableName()) != null
+
+private fun CommandLine.optionValue(cmdLineOpt: CommandLineOption) = Option.fromNullablesChain(
+        getOptionValue(cmdLineOpt.option.opt),
+        { System.getenv(cmdLineOpt.environmentVariableName()) })
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/http.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/http.kt
new file mode 100644
index 00000000..c5c46397
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/http.kt
@@ -0,0 +1,81 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.http
+
+import arrow.typeclasses.Show
+import java.util.*
+import javax.json.Json
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since August 2018
+ */
+object HttpConstants {
+    const val STATUS_OK = 200
+    const val STATUS_ACCEPTED = 202
+    const val STATUS_BAD_REQUEST = 400
+    const val STATUS_NOT_FOUND = 404
+    const val STATUS_INTERNAL_SERVER_ERROR = 500
+    const val STATUS_SERVICE_UNAVAILABLE = 503
+
+    const val CONTENT_TYPE_JSON = "application/json"
+    const val CONTENT_TYPE_TEXT = "text/plain"
+}
+
+enum class HttpStatus(val number: Int) {
+    OK(HttpConstants.STATUS_OK),
+    ACCEPTED(HttpConstants.STATUS_ACCEPTED),
+    BAD_REQUEST(HttpConstants.STATUS_BAD_REQUEST),
+    NOT_FOUND(HttpConstants.STATUS_NOT_FOUND),
+    INTERNAL_SERVER_ERROR(HttpConstants.STATUS_INTERNAL_SERVER_ERROR),
+    SERVICE_UNAVAILABLE(HttpConstants.STATUS_SERVICE_UNAVAILABLE)
+}
+
+
+enum class ContentType(val value: String) {
+    JSON(HttpConstants.CONTENT_TYPE_JSON),
+    TEXT(HttpConstants.CONTENT_TYPE_TEXT)
+}
+
+data class Response(val status: HttpStatus, val content: Content<Any>)
+data class Content<T>(val type: ContentType, val value: T, val serializer: Show<T> = Show.any())
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+object Responses {
+
+    fun acceptedResponse(id: UUID): Response {
+        return Response(
+                HttpStatus.ACCEPTED,
+                Content(ContentType.TEXT, id)
+        )
+    }
+
+    fun statusResponse(name: String, message: String, httpStatus: HttpStatus = HttpStatus.OK): Response {
+        return Response(httpStatus,
+                Content(ContentType.JSON,
+                        Json.createObjectBuilder()
+                                .add("status", name)
+                                .add("message", message)
+                                .build()))
+    }
+}
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/ratpack.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/ratpack.kt
new file mode 100644
index 00000000..0282d0c7
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/ratpack.kt
@@ -0,0 +1,77 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.http
+
+import arrow.core.Either
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import javax.json.Json
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+
+private val logger = Logger("org.onap.dcae.collectors.veshv.utils.arrow.ratpack")
+
+fun ratpack.http.Response.sendOrError(action: IO<Unit>) {
+    sendAndHandleErrors(action.map {
+        Response(
+                HttpStatus.OK,
+                Content(
+                        ContentType.JSON,
+                        Json.createObjectBuilder().add("response", "Request accepted").build()))
+    })
+}
+
+fun <A> ratpack.http.Response.sendEitherErrorOrResponse(response: Either<A, Response>) {
+    when(response) {
+        is Either.Left -> send(errorResponse(response.a.toString()))
+        is Either.Right -> sendAndHandleErrors(IO.just(response.b))
+    }
+}
+
+fun ratpack.http.Response.sendAndHandleErrors(response: IO<Response>) {
+    response.attempt().unsafeRunSync().fold(
+            { err ->
+                logger.warn("Error occurred. Sending .", err)
+                val message = err.message
+                send(errorResponse(message))
+            },
+            ::send
+    )
+}
+
+private fun errorResponse(message: String?): Response {
+    return Response(
+            HttpStatus.INTERNAL_SERVER_ERROR,
+            Content(
+                    ContentType.JSON,
+                    Json.createObjectBuilder().add("error", message).build()))
+}
+
+fun ratpack.http.Response.send(response: Response) {
+    val respWithStatus = status(response.status.number)
+    response.content.apply {
+        respWithStatus.send(
+                type.value,
+                serializer.run { value.show() })
+    }
+}
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/Logger.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/Logger.kt
new file mode 100644
index 00000000..033dd5e5
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/Logger.kt
@@ -0,0 +1,137 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.logging
+
+import kotlin.reflect.KClass
+import org.slf4j.LoggerFactory
+
+@Suppress("TooManyFunctions", "SuboptimalLoggerUsage")
+class Logger(val logger: org.slf4j.Logger) {
+    constructor(clazz: KClass<out Any>) : this(LoggerFactory.getLogger(clazz.java))
+    constructor(name: String) : this(LoggerFactory.getLogger(name))
+
+    //
+    // TRACE
+    //
+
+    val traceEnabled: Boolean
+        get() = logger.isTraceEnabled
+
+    fun trace(messageProvider: () -> String) {
+        if (logger.isTraceEnabled) {
+            logger.trace(messageProvider())
+        }
+    }
+
+    //
+    // DEBUG
+    //
+
+    fun debug(message: String) {
+        logger.debug(message)
+    }
+
+    fun debug(message: String, t: Throwable) {
+        logger.debug(message, t)
+    }
+
+    fun debug(messageProvider: () -> String) {
+        if (logger.isDebugEnabled) {
+            logger.debug(messageProvider())
+        }
+    }
+
+    fun debug(t: Throwable, messageProvider: () -> String) {
+        if (logger.isDebugEnabled) {
+            logger.debug(messageProvider(), t)
+        }
+    }
+
+    //
+    // INFO
+    //
+    fun info(message: String) {
+        logger.info(message)
+    }
+
+    fun info(messageProvider: () -> String) {
+        if (logger.isInfoEnabled) {
+            logger.info(messageProvider())
+        }
+    }
+
+    fun info(message: String, t: Throwable) {
+        logger.info(message, t)
+    }
+
+    fun info(t: Throwable, messageProvider: () -> String) {
+        if (logger.isInfoEnabled) {
+            logger.info(messageProvider(), t)
+        }
+    }
+
+    //
+    // WARN
+    //
+
+    fun warn(message: String) {
+        logger.warn(message)
+    }
+
+    fun warn(message: String, t: Throwable) {
+        logger.warn(message, t)
+    }
+
+    fun warn(messageProvider: () -> String) {
+        if (logger.isWarnEnabled) {
+            logger.warn(messageProvider())
+        }
+    }
+
+    fun warn(t: Throwable, messageProvider: () -> String) {
+        if (logger.isWarnEnabled) {
+            logger.warn(messageProvider(), t)
+        }
+    }
+
+    //
+    // ERROR
+    //
+
+    fun error(message: String) {
+        logger.error(message)
+    }
+
+    fun error(message: String, t: Throwable) {
+        logger.error(message, t)
+    }
+
+    fun error(messageProvider: () -> String) {
+        if (logger.isErrorEnabled) {
+            logger.error(messageProvider())
+        }
+    }
+
+    fun error(t: Throwable, messageProvider: () -> String) {
+        if (logger.isErrorEnabled) {
+            logger.error(messageProvider(), t)
+        }
+    }
+}
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/reactive_logging.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/reactive_logging.kt
new file mode 100644
index 00000000..714702d3
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/reactive_logging.kt
@@ -0,0 +1,28 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.logging
+
+import reactor.core.publisher.Flux
+
+fun <T> Logger.handleReactiveStreamError(ex: Throwable, returnFlux: Flux<T> = Flux.empty()): Flux<T> {
+    logger.warn("Error while handling message stream: ${ex::class.qualifiedName} (${ex.message})")
+    logger.debug("Detailed stack trace", ex)
+    return returnFlux
+}
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
new file mode 100644
index 00000000..bdb63b68
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
@@ -0,0 +1,46 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils
+
+import arrow.effects.IO
+import reactor.netty.DisposableServer
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+abstract class ServerHandle(val host: String, val port: Int) {
+    abstract fun shutdown(): IO<Unit>
+    abstract fun await(): IO<Unit>
+}
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+class NettyServerHandle(private val ctx: DisposableServer) : ServerHandle(ctx.host(), ctx.port()) {
+    override fun shutdown() = IO {
+        ctx.disposeNow()
+    }
+
+    override fun await() = IO<Unit> {
+        ctx.channel().closeFuture().sync()
+    }
+}
diff --git a/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/CoreKtTest.kt b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/CoreKtTest.kt
new file mode 100644
index 00000000..2eb11b27
--- /dev/null
+++ b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/CoreKtTest.kt
@@ -0,0 +1,141 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.arrow
+
+import arrow.core.None
+import arrow.core.Option
+import arrow.core.Some
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import java.util.concurrent.atomic.AtomicReference
+
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk></piotr.jaszczyk>@nokia.com>
+ * @since August 2018
+ */
+internal class CoreKtTest : Spek({
+    describe("AtomicReference.getOption") {
+        given("empty atomic reference") {
+            val atomicReference = AtomicReference<String>()
+
+            on("getOption") {
+                val result = atomicReference.getOption()
+
+                it("should be None") {
+                    assertThat(result).isEqualTo(None)
+                }
+            }
+        }
+        given("non-empty atomic reference") {
+            val initialValue = "reksio"
+            val atomicReference = AtomicReference(initialValue)
+
+            on("getOption") {
+                val result = atomicReference.getOption()
+
+                it("should be Some($initialValue)") {
+                    assertThat(result).isEqualTo(Some(initialValue))
+                }
+            }
+        }
+    }
+
+    describe("Option.fromNullablesChain") {
+        given("one non-null element") {
+            val just = "some text"
+            on("calling factory") {
+                val result = Option.fromNullablesChain(just)
+
+                it("should return Some($just)") {
+                    assertThat(result).isEqualTo(Some(just))
+                }
+            }
+        }
+
+        given("one null element") {
+            val just: String? = null
+            on("calling factory") {
+                val result = Option.fromNullablesChain(just)
+
+                it("should return None") {
+                    assertThat(result).isEqualTo(None)
+                }
+            }
+        }
+
+        given("first non-null element") {
+            val first = "some text"
+            val second: String? = null
+            var secondAskedForValue = false
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { secondAskedForValue = true; second })
+
+                it("should return Some($first)") {
+                    assertThat(result).isEqualTo(Some(first))
+                }
+
+                it("should have not called second provider (should be lazy)") {
+                    assertThat(secondAskedForValue).isFalse()
+                }
+            }
+        }
+
+        given("two non-null elements") {
+            val first = "some text"
+            val second = "another text"
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { second })
+
+                it("should return Some($first)") {
+                    assertThat(result).isEqualTo(Some(first))
+                }
+            }
+        }
+
+        given("two null elements") {
+            val first: String? = null
+            val second: String? = null
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { second })
+
+                it("should return None") {
+                    assertThat(result).isEqualTo(None)
+                }
+            }
+        }
+
+        given("second non-null element") {
+            val first: String? = null
+            val second = "another text"
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { second })
+
+                it("should return Some($second)") {
+                    assertThat(result).isEqualTo(Some(second))
+                }
+            }
+        }
+    }
+})
diff --git a/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/CommandLineOptionTest.kt b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/CommandLineOptionTest.kt
new file mode 100644
index 00000000..f36df043
--- /dev/null
+++ b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/CommandLineOptionTest.kt
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.commandline
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+class CommandLineOptionTest : Spek({
+    describe("command line options enum") {
+        describe("environment variables") {
+            given("sample option and prefix") {
+                val opt = CommandLineOption.KAFKA_SERVERS
+                val prefix = "CONFIG"
+
+                on("calling environmentVariableName") {
+                    val result = opt.environmentVariableName(prefix)
+
+                    it("should return prefixed upper snake cased long option name") {
+                        assertThat(result).isEqualTo("CONFIG_KAFKA_BOOTSTRAP_SERVERS")
+                    }
+                }
+            }
+
+            given("sample option without prefix") {
+                val opt = CommandLineOption.DUMMY_MODE
+
+                on("calling environmentVariableName") {
+                    val result = opt.environmentVariableName()
+
+                    it("should return prefixed upper snake cased long option name") {
+                        assertThat(result).isEqualTo("VESHV_DUMMY")
+                    }
+                }
+            }
+        }
+    }
+})
diff --git a/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/WrongArgumentErrorTest.kt b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/WrongArgumentErrorTest.kt
new file mode 100644
index 00000000..63d9eb82
--- /dev/null
+++ b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/commandline/WrongArgumentErrorTest.kt
@@ -0,0 +1,61 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.commandline
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.HEALTH_CHECK_API_PORT
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.LISTEN_PORT
+
+class WrongArgumentErrorTest : Spek ({
+
+    describe("help message logic test") {
+
+        given("at least one required option") {
+            val filledOptionList = listOf(
+                    HEALTH_CHECK_API_PORT,
+                    LISTEN_PORT)
+            on("help message preparation") {
+                val requiredParameters = WrongArgumentError.generateRequiredParametersNote(filledOptionList)
+
+                it("should print out required fields") {
+                    assertThat(requiredParameters).isEqualTo("Required parameters: p")
+                }
+            }
+        }
+
+        given("no required option") {
+            val filledOptionList = listOf(HEALTH_CHECK_API_PORT)
+
+            on("help message preparation") {
+                val requiredParameters = WrongArgumentError.generateRequiredParametersNote(filledOptionList)
+
+                it("should not print required fields") {
+                    assertThat(requiredParameters).isEqualTo("")
+                }
+            }
+        }
+    }
+
+})
\ No newline at end of file
diff --git a/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/http/ResponsesTest.kt b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/http/ResponsesTest.kt
new file mode 100644
index 00000000..f9f716a1
--- /dev/null
+++ b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/http/ResponsesTest.kt
@@ -0,0 +1,101 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.http
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import java.util.*
+import javax.json.JsonObject
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+internal class ResponsesTest : Spek({
+    describe("response factory") {
+        describe("accepted response") {
+            given("uuid") {
+                val uuid = UUID.randomUUID()
+
+                on("calling acceptedResponse") {
+                    val result = Responses.acceptedResponse(uuid)
+
+                    it ("should have ACCEPTED status") {
+                        assertThat(result.status).isEqualTo(HttpStatus.ACCEPTED)
+                    }
+
+                    it ("should have text body") {
+                        assertThat(result.content.type).isEqualTo(ContentType.TEXT)
+                    }
+
+                    it ("should contain UUID text in the body") {
+                        val serialized = result.content.serializer.run { result.content.value.show() }
+                        assertThat(serialized).isEqualTo(uuid.toString())
+                    }
+                }
+            }
+        }
+        describe("status response") {
+            given("all params are specified") {
+                val status = "ok"
+                val message = "good job"
+                val httpStatus = HttpStatus.OK
+
+                on("calling statusResponse") {
+                    val result = Responses.statusResponse(status, message, httpStatus)
+                    val json = result.content.value as JsonObject
+
+                    it ("should have OK status") {
+                        assertThat(result.status).isEqualTo(HttpStatus.OK)
+                    }
+
+                    it ("should have json body") {
+                        assertThat(result.content.type).isEqualTo(ContentType.JSON)
+                    }
+
+                    it ("should contain status as string") {
+                        assertThat(json.getString("status")).isEqualTo(status)
+                    }
+
+                    it ("should contain message") {
+                        assertThat(json.getString("message")).isEqualTo(message)
+                    }
+                }
+            }
+
+            given("default params are omitted") {
+                val status = "ok"
+                val message = "good job"
+
+                on("calling statusResponse") {
+                    val result = Responses.statusResponse(status, message)
+
+                    it ("should have OK status") {
+                        assertThat(result.status).isEqualTo(HttpStatus.OK)
+                    }
+                }
+            }
+        }
+    }
+})
diff --git a/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/logging/LoggerTest.kt b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/logging/LoggerTest.kt
new file mode 100644
index 00000000..c27fb8c8
--- /dev/null
+++ b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/logging/LoggerTest.kt
@@ -0,0 +1,230 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.logging
+
+import com.nhaarman.mockitokotlin2.mock
+import com.nhaarman.mockitokotlin2.verify
+import com.nhaarman.mockitokotlin2.verifyNoMoreInteractions
+import com.nhaarman.mockitokotlin2.whenever
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since May 2018
+ */
+object LoggerTest : Spek({
+
+    lateinit var slf4jLogger: org.slf4j.Logger
+    lateinit var cut: Logger
+
+    beforeEachTest {
+        slf4jLogger = mock()
+        cut = Logger(slf4jLogger)
+    }
+
+    afterEachTest {
+        verifyNoMoreInteractions(slf4jLogger)
+    }
+
+    describe("Thin Kotlin logging facade for Slf4j") {
+        val message = "sample message"
+        val exception = Exception("fail")
+
+        describe("debug levels") {
+            it("should log message") {
+                cut.debug(message)
+                verify(slf4jLogger).debug(message)
+            }
+
+            it("should log message with exception") {
+                cut.debug(message, exception)
+                verify(slf4jLogger).debug(message, exception)
+            }
+
+            describe("lazy logging message") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isDebugEnabled).thenReturn(true)
+                    cut.debug { message }
+                    verify(slf4jLogger).isDebugEnabled
+                    verify(slf4jLogger).debug(message)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isDebugEnabled).thenReturn(false)
+                    cut.debug { message }
+                    verify(slf4jLogger).isDebugEnabled
+                }
+            }
+
+            describe("lazy logging message with exception") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isDebugEnabled).thenReturn(true)
+                    cut.debug(exception) { message }
+                    verify(slf4jLogger).isDebugEnabled
+                    verify(slf4jLogger).debug(message, exception)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isDebugEnabled).thenReturn(false)
+                    cut.debug(exception) { message }
+                    verify(slf4jLogger).isDebugEnabled
+                }
+            }
+        }
+
+        describe("info levels") {
+            it("should log message") {
+                cut.info(message)
+                verify(slf4jLogger).info(message)
+            }
+
+            it("should log message with exception") {
+                cut.info(message, exception)
+                verify(slf4jLogger).info(message, exception)
+            }
+
+            describe("lazy logging message") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isInfoEnabled).thenReturn(true)
+                    cut.info { message }
+                    verify(slf4jLogger).isInfoEnabled
+                    verify(slf4jLogger).info(message)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isInfoEnabled).thenReturn(false)
+                    cut.info { message }
+                    verify(slf4jLogger).isInfoEnabled
+                }
+            }
+
+            describe("lazy logging message with exception") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isInfoEnabled).thenReturn(true)
+                    cut.info(exception) { message }
+                    verify(slf4jLogger).isInfoEnabled
+                    verify(slf4jLogger).info(message, exception)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isInfoEnabled).thenReturn(false)
+                    cut.info(exception) { message }
+                    verify(slf4jLogger).isInfoEnabled
+                }
+            }
+        }
+
+        describe("warning levels") {
+            it("should log message") {
+                cut.warn(message)
+                verify(slf4jLogger).warn(message)
+            }
+
+            it("should log message with exception") {
+                cut.warn(message, exception)
+                verify(slf4jLogger).warn(message, exception)
+            }
+
+            describe("lazy logging message") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isWarnEnabled).thenReturn(true)
+                    cut.warn { message }
+                    verify(slf4jLogger).isWarnEnabled
+                    verify(slf4jLogger).warn(message)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isWarnEnabled).thenReturn(false)
+                    cut.warn { message }
+                    verify(slf4jLogger).isWarnEnabled
+                }
+            }
+
+            describe("lazy logging message with exception") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isWarnEnabled).thenReturn(true)
+                    cut.warn(exception) { message }
+                    verify(slf4jLogger).isWarnEnabled
+                    verify(slf4jLogger).warn(message, exception)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isWarnEnabled).thenReturn(false)
+                    cut.warn(exception) { message }
+                    verify(slf4jLogger).isWarnEnabled
+                }
+            }
+        }
+
+        describe("error levels") {
+            it("should log message") {
+                cut.error(message)
+                verify(slf4jLogger).error(message)
+            }
+
+            it("should log message with exception") {
+                cut.error(message, exception)
+                verify(slf4jLogger).error(message, exception)
+            }
+
+            describe("lazy logging message") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isErrorEnabled).thenReturn(true)
+                    cut.error { message }
+                    verify(slf4jLogger).isErrorEnabled
+                    verify(slf4jLogger).error(message)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isErrorEnabled).thenReturn(false)
+                    cut.error { message }
+                    verify(slf4jLogger).isErrorEnabled
+                }
+            }
+
+            describe("lazy logging message with exception") {
+
+                it("should log when debug is ON") {
+                    whenever(slf4jLogger.isErrorEnabled).thenReturn(true)
+                    cut.error(exception) { message }
+                    verify(slf4jLogger).isErrorEnabled
+                    verify(slf4jLogger).error(message, exception)
+                }
+
+                it("should not log when debug is OFF") {
+                    whenever(slf4jLogger.isErrorEnabled).thenReturn(false)
+                    cut.error(exception) { message }
+                    verify(slf4jLogger).isErrorEnabled
+                }
+            }
+        }
+
+
+    }
+})
diff --git a/sources/hv-collector-ves-message-generator/pom.xml b/sources/hv-collector-ves-message-generator/pom.xml
new file mode 100644
index 00000000..c5ce7f65
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/pom.xml
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-ves-message-generator</artifactId>
+    <description>VES HighVolume Collector :: VES message generator</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-domain</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-test-utils</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-java-util</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib-jdk8</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.spek</groupId>
+            <artifactId>spek-junit-platform-engine</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-test</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish</groupId>
+            <artifactId>javax.json</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageGenerator.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageGenerator.kt
new file mode 100644
index 00000000..076c06be
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageGenerator.kt
@@ -0,0 +1,36 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.api
+
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import reactor.core.publisher.Flux
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+interface MessageGenerator {
+    fun createMessageFlux(messageParameters: List<MessageParameters>): Flux<WireFrameMessage>
+
+    companion object {
+        const val FIXED_PAYLOAD_SIZE = 100
+    }
+}
+
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageParameters.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageParameters.kt
new file mode 100644
index 00000000..047d863c
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageParameters.kt
@@ -0,0 +1,30 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.api
+
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+data class MessageParameters(val commonEventHeader: CommonEventHeader,
+                             val messageType: MessageType,
+                             val amount: Long = -1)
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageParametersParser.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageParametersParser.kt
new file mode 100644
index 00000000..754fa31f
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageParametersParser.kt
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.api
+
+import arrow.core.Either
+import arrow.core.Option
+import org.onap.dcae.collectors.veshv.ves.message.generator.impl.MessageParametersParserImpl
+import javax.json.JsonArray
+
+interface MessageParametersParser {
+    fun parse(request: JsonArray): Either<ParsingError, List<MessageParameters>>
+
+    companion object {
+        val INSTANCE: MessageParametersParser by lazy {
+            MessageParametersParserImpl()
+        }
+    }
+}
+
+data class ParsingError(val message: String, val cause: Option<Throwable>)
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageType.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageType.kt
new file mode 100644
index 00000000..22c88252
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/api/MessageType.kt
@@ -0,0 +1,32 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.api
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since July 2018
+ */
+enum class MessageType {
+    VALID,
+    TOO_BIG_PAYLOAD,
+    FIXED_PAYLOAD,
+    INVALID_WIRE_FRAME,
+    INVALID_GPB_DATA,
+}
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/factory/MessageGeneratorFactory.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/factory/MessageGeneratorFactory.kt
new file mode 100644
index 00000000..e2269c20
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/factory/MessageGeneratorFactory.kt
@@ -0,0 +1,33 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.factory
+
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.ves.message.generator.impl.MessageGeneratorImpl
+import org.onap.dcae.collectors.veshv.ves.message.generator.impl.PayloadGenerator
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since October 2018
+ */
+object MessageGeneratorFactory {
+    fun create(maxPayloadSizeBytes: Int): MessageGenerator =
+            MessageGeneratorImpl(PayloadGenerator(), maxPayloadSizeBytes)
+}
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/CommonEventHeaderParser.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/CommonEventHeaderParser.kt
new file mode 100644
index 00000000..909db5e4
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/CommonEventHeaderParser.kt
@@ -0,0 +1,50 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import arrow.core.Option
+import com.google.protobuf.util.JsonFormat
+import org.onap.dcae.collectors.veshv.domain.headerRequiredFieldDescriptors
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import javax.json.JsonObject
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since July 2018
+ */
+class CommonEventHeaderParser {
+    fun parse(json: JsonObject): Option<CommonEventHeader> =
+            Option.fromNullable(
+                    CommonEventHeader.newBuilder()
+                            .apply { JsonFormat.parser().merge(json.toString(), this) }
+                            .build()
+                            .takeUnless { !isValid(it) }
+            )
+
+
+    private fun isValid(header: CommonEventHeader): Boolean {
+        return allMandatoryFieldsArePresent(header)
+    }
+
+    private fun allMandatoryFieldsArePresent(header: CommonEventHeader) =
+            headerRequiredFieldDescriptors
+                    .all { fieldDescriptor -> header.hasField(fieldDescriptor) }
+
+}
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageGeneratorImpl.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageGeneratorImpl.kt
new file mode 100644
index 00000000..fa39ed16
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageGeneratorImpl.kt
@@ -0,0 +1,109 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import com.google.protobuf.ByteString
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.domain.PayloadContentType
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.FIXED_PAYLOAD
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.INVALID_GPB_DATA
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.INVALID_WIRE_FRAME
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.TOO_BIG_PAYLOAD
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.VALID
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import org.onap.ves.VesEventOuterClass.VesEvent
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+import java.nio.charset.Charset
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+class MessageGeneratorImpl internal constructor(
+        private val payloadGenerator: PayloadGenerator,
+        private val maxPayloadSizeBytes: Int
+) : MessageGenerator {
+
+    override fun createMessageFlux(messageParameters: List<MessageParameters>): Flux<WireFrameMessage> = Flux
+            .fromIterable(messageParameters)
+            .flatMap { createMessageFlux(it) }
+
+    private fun createMessageFlux(parameters: MessageParameters): Flux<WireFrameMessage> =
+            Mono.fromCallable { createMessage(parameters.commonEventHeader, parameters.messageType) }
+                    .let {
+                        when {
+                            parameters.amount < 0 ->
+                                // repeat forever
+                                it.repeat()
+                            parameters.amount == 0L ->
+                                // do not generate any message
+                                Flux.empty()
+                            else ->
+                                // send original message and additional amount-1 messages
+                                it.repeat(parameters.amount - 1)
+                        }
+                    }
+
+    private fun createMessage(commonEventHeader: CommonEventHeader, messageType: MessageType): WireFrameMessage =
+            when (messageType) {
+                VALID ->
+                    WireFrameMessage(vesEvent(commonEventHeader, payloadGenerator.generatePayload()))
+                TOO_BIG_PAYLOAD ->
+                    WireFrameMessage(vesEvent(commonEventHeader, oversizedPayload()))
+                FIXED_PAYLOAD ->
+                    WireFrameMessage(vesEvent(commonEventHeader, fixedPayload()))
+                INVALID_WIRE_FRAME -> {
+                    val payload = ByteData(vesEvent(commonEventHeader, payloadGenerator.generatePayload()))
+                    WireFrameMessage(
+                            payload,
+                            UNSUPPORTED_VERSION,
+                            UNSUPPORTED_VERSION,
+                            PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
+                            payload.size())
+                }
+                INVALID_GPB_DATA ->
+                    WireFrameMessage("invalid vesEvent".toByteArray(Charset.defaultCharset()))
+            }
+
+    private fun vesEvent(commonEventHeader: CommonEventHeader, eventFields: ByteString): ByteArray {
+        return createVesEvent(commonEventHeader, eventFields).toByteArray()
+    }
+
+    private fun createVesEvent(commonEventHeader: CommonEventHeader, payload: ByteString): VesEvent =
+            VesEvent.newBuilder()
+                    .setCommonEventHeader(commonEventHeader)
+                    .setEventFields(payload)
+                    .build()
+
+    private fun oversizedPayload() =
+            payloadGenerator.generateRawPayload(maxPayloadSizeBytes + 1)
+
+    private fun fixedPayload() =
+            payloadGenerator.generateRawPayload(MessageGenerator.FIXED_PAYLOAD_SIZE)
+
+    companion object {
+        private const val UNSUPPORTED_VERSION: Short = 2
+    }
+}
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageParametersParserImpl.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageParametersParserImpl.kt
new file mode 100644
index 00000000..6ef6d53a
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageParametersParserImpl.kt
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import arrow.core.Option
+import arrow.core.Try
+import arrow.core.identity
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
+import javax.json.JsonArray
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since July 2018
+ */
+internal class MessageParametersParserImpl(
+        private val commonEventHeaderParser: CommonEventHeaderParser = CommonEventHeaderParser()
+) : MessageParametersParser {
+
+    override fun parse(request: JsonArray) =
+            Try {
+                request
+                        .map { it.asJsonObject() }
+                        .map { json ->
+                            val commonEventHeader = commonEventHeaderParser
+                                    .parse(json.getJsonObject("commonEventHeader"))
+                                    .fold({ throw IllegalStateException("Invalid common header") }, ::identity)
+                            val messageType = MessageType.valueOf(json.getString("messageType"))
+                            val messagesAmount = json.getJsonNumber("messagesAmount")?.longValue()
+                                    ?: throw NullPointerException("\"messagesAmount\" could not be parsed.")
+                            MessageParameters(commonEventHeader, messageType, messagesAmount)
+                        }
+            }.toEither().mapLeft { ex ->
+                ParsingError(
+                        ex.message ?: "Unable to parse message parameters",
+                        Option.fromNullable(ex))
+            }
+}
diff --git a/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/PayloadGenerator.kt b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/PayloadGenerator.kt
new file mode 100644
index 00000000..545e237c
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/main/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/PayloadGenerator.kt
@@ -0,0 +1,40 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import com.google.protobuf.ByteString
+import java.util.*
+import kotlin.streams.asSequence
+
+internal class PayloadGenerator {
+
+    private val randomGenerator = Random()
+
+    fun generateRawPayload(size: Int): ByteString =
+            ByteString.copyFrom(ByteArray(size))
+
+    fun generatePayload(numOfCountMeasurements: Long = 2): ByteString =
+            ByteString.copyFrom(
+                    randomGenerator.ints(numOfCountMeasurements, 0, 256)
+                            .asSequence()
+                            .toString()
+                            .toByteArray()
+            )
+}
diff --git a/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/CommonEventHeaderParserTest.kt b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/CommonEventHeaderParserTest.kt
new file mode 100644
index 00000000..3a33c44a
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/CommonEventHeaderParserTest.kt
@@ -0,0 +1,82 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import arrow.core.Option
+import arrow.core.identity
+import com.google.protobuf.util.JsonFormat
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.STATE_CHANGE
+import org.onap.dcae.collectors.veshv.tests.utils.commonHeader
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import java.io.ByteArrayInputStream
+import javax.json.Json
+import kotlin.test.fail
+
+class CommonEventHeaderParserTest : Spek({
+
+    describe("Common event header parser") {
+        val parser = CommonEventHeaderParser()
+
+        given("valid header in JSON format") {
+            val commonEventHeader = commonHeader(
+                    domain = STATE_CHANGE,
+                    id = "sample-event-id")
+            val json = JsonFormat.printer().print(commonEventHeader).byteInputStream()
+
+            it("should parse common event header") {
+                val result =
+                        parser.parse(jsonObject(json))
+                                .fold({ fail() }, ::identity)
+
+                assertThat(result).describedAs("common event header").isEqualTo(commonEventHeader)
+            }
+        }
+
+        given("invalid header in JSON format") {
+            val json = "{}".byteInputStream()
+
+            it("should throw exception") {
+                val result = parser.parse(jsonObject(json))
+
+                assertFailed(result)
+            }
+        }
+
+        given("invalid JSON") {
+            val json = "{}}}}".byteInputStream()
+
+            it("should throw exception") {
+                val result = parser.parse(jsonObject(json))
+
+                assertFailed(result)
+            }
+        }
+    }
+})
+
+fun assertFailed(result: Option<CommonEventHeader>) =
+        result.fold({}, { fail() })
+
+fun jsonObject(json: ByteArrayInputStream) = Json.createReader(json).readObject()!!
\ No newline at end of file
diff --git a/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageGeneratorImplTest.kt b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageGeneratorImplTest.kt
new file mode 100644
index 00000000..e2aec7df
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageGeneratorImplTest.kt
@@ -0,0 +1,227 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import com.google.protobuf.ByteString
+import com.google.protobuf.InvalidProtocolBufferException
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.assertThatExceptionOfType
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.domain.ByteData
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.PERF3GPP
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.FAULT
+import org.onap.dcae.collectors.veshv.domain.VesEventDomain.HEARTBEAT
+import org.onap.dcae.collectors.veshv.tests.utils.commonHeader
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import org.onap.ves.VesEventOuterClass.VesEvent
+import reactor.test.test
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+object MessageGeneratorImplTest : Spek({
+    describe("message factory") {
+        val maxPayloadSizeBytes = 1024
+        val generator = MessageGeneratorImpl(PayloadGenerator(), maxPayloadSizeBytes)
+        given("single message parameters") {
+
+            on("messages amount not specified in parameters") {
+                it("should create infinite flux") {
+                    val limit = 1000L
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(PERF3GPP),
+                                    MessageType.VALID
+                            )))
+                            .take(limit)
+                            .test()
+                            .expectNextCount(limit)
+                            .verifyComplete()
+                }
+            }
+
+            on("messages amount = 0 specified in parameters") {
+                it("should create empty message flux") {
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(PERF3GPP),
+                                    MessageType.VALID,
+                                    0
+                            )))
+                            .test()
+                            .verifyComplete()
+                }
+            }
+
+            on("messages amount specified in parameters") {
+                it("should create message flux of specified size") {
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(PERF3GPP),
+                                    MessageType.VALID,
+                                    5
+                            )))
+                            .test()
+                            .expectNextCount(5)
+                            .verifyComplete()
+                }
+            }
+
+            on("message type requesting valid message") {
+                it("should create flux of valid messages with given domain") {
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(FAULT),
+                                    MessageType.VALID,
+                                    1
+                            )))
+                            .test()
+                            .assertNext {
+                                assertThat(it.isValid()).isTrue()
+                                assertThat(it.payloadSize).isLessThan(maxPayloadSizeBytes)
+                                assertThat(extractCommonEventHeader(it.payload).domain).isEqualTo(FAULT.domainName)
+                            }
+                            .verifyComplete()
+                }
+            }
+
+            on("message type requesting too big payload") {
+                it("should create flux of messages with given domain and payload exceeding threshold") {
+
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(PERF3GPP),
+                                    MessageType.TOO_BIG_PAYLOAD,
+                                    1
+                            )))
+                            .test()
+                            .assertNext {
+                                assertThat(it.isValid()).isTrue()
+                                assertThat(it.payloadSize).isGreaterThan(maxPayloadSizeBytes)
+                                assertThat(extractCommonEventHeader(it.payload).domain).isEqualTo(PERF3GPP.domainName)
+                            }
+                            .verifyComplete()
+                }
+            }
+
+            on("message type requesting invalid GPB data ") {
+                it("should create flux of messages with invalid payload") {
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(PERF3GPP),
+                                    MessageType.INVALID_GPB_DATA,
+                                    1
+                            )))
+                            .test()
+                            .assertNext {
+                                assertThat(it.isValid()).isTrue()
+                                assertThat(it.payloadSize).isLessThan(maxPayloadSizeBytes)
+                                assertThatExceptionOfType(InvalidProtocolBufferException::class.java)
+                                        .isThrownBy { extractCommonEventHeader(it.payload) }
+                            }
+                            .verifyComplete()
+                }
+            }
+
+            on("message type requesting invalid wire frame ") {
+                it("should create flux of messages with invalid version") {
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(PERF3GPP),
+                                    MessageType.INVALID_WIRE_FRAME,
+                                    1
+                            )))
+                            .test()
+                            .assertNext {
+                                assertThat(it.isValid()).isFalse()
+                                assertThat(it.payloadSize).isLessThan(maxPayloadSizeBytes)
+                                assertThat(extractCommonEventHeader(it.payload).domain).isEqualTo(PERF3GPP.domainName)
+                                assertThat(it.versionMajor).isNotEqualTo(WireFrameMessage.SUPPORTED_VERSION_MINOR)
+                            }
+                            .verifyComplete()
+                }
+            }
+
+            on("message type requesting fixed payload") {
+                it("should create flux of valid messages with fixed payload") {
+                    generator
+                            .createMessageFlux(listOf(MessageParameters(
+                                    commonHeader(FAULT),
+                                    MessageType.FIXED_PAYLOAD,
+                                    1
+                            )))
+                            .test()
+                            .assertNext {
+                                assertThat(it.isValid()).isTrue()
+                                assertThat(it.payloadSize).isLessThan(maxPayloadSizeBytes)
+                                assertThat(extractEventFields(it.payload).size()).isEqualTo(MessageGenerator.FIXED_PAYLOAD_SIZE)
+                                assertThat(extractCommonEventHeader(it.payload).domain).isEqualTo(FAULT.domainName)
+                            }
+                            .verifyComplete()
+                }
+            }
+        }
+        given("list of message parameters") {
+            it("should create concatenated flux of messages") {
+                val singleFluxSize = 5L
+                val messageParameters = listOf(
+                        MessageParameters(commonHeader(PERF3GPP), MessageType.VALID, singleFluxSize),
+                        MessageParameters(commonHeader(FAULT), MessageType.TOO_BIG_PAYLOAD, singleFluxSize),
+                        MessageParameters(commonHeader(HEARTBEAT), MessageType.VALID, singleFluxSize)
+                )
+                generator.createMessageFlux(messageParameters)
+                        .test()
+                        .assertNext {
+                            assertThat(it.payloadSize).isLessThan(maxPayloadSizeBytes)
+                            assertThat(extractCommonEventHeader(it.payload).domain).isEqualTo(PERF3GPP.domainName)
+                        }
+                        .expectNextCount(singleFluxSize - 1)
+                        .assertNext {
+                            assertThat(it.payloadSize).isGreaterThan(maxPayloadSizeBytes)
+                            assertThat(extractCommonEventHeader(it.payload).domain).isEqualTo(FAULT.domainName)
+                        }
+                        .expectNextCount(singleFluxSize - 1)
+                        .assertNext {
+                            assertThat(it.payloadSize).isLessThan(maxPayloadSizeBytes)
+                            assertThat(extractCommonEventHeader(it.payload).domain).isEqualTo(HEARTBEAT.domainName)
+                        }
+                        .expectNextCount(singleFluxSize - 1)
+                        .verifyComplete()
+            }
+        }
+    }
+})
+
+fun extractCommonEventHeader(bytes: ByteData): CommonEventHeader =
+        VesEvent.parseFrom(bytes.unsafeAsArray()).commonEventHeader
+
+
+fun extractEventFields(bytes: ByteData): ByteString =
+        VesEvent.parseFrom(bytes.unsafeAsArray()).eventFields
+
diff --git a/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageParametersParserTest.kt b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageParametersParserTest.kt
new file mode 100644
index 00000000..134ebb2d
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/MessageParametersParserTest.kt
@@ -0,0 +1,64 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.fail
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
+
+private const val EXPECTED_MESSAGES_AMOUNT = 25000L
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since July 2018
+ */
+object MessageParametersParserTest : Spek({
+    describe("Messages parameters parser") {
+        val messageParametersParser = MessageParametersParserImpl()
+
+        given("parameters json array") {
+            on("valid parameters json") {
+                it("should parse MessagesParameters object successfully") {
+                    val result = messageParametersParser.parse(validMessagesParametesJson())
+
+                    result.fold({ fail("should have succeeded") }) { rightResult ->
+                        assertThat(rightResult).hasSize(2)
+                        val firstMessage = rightResult.first()
+                        assertThat(firstMessage.messageType).isEqualTo(MessageType.VALID)
+                        assertThat(firstMessage.amount).isEqualTo(EXPECTED_MESSAGES_AMOUNT)
+
+                    }
+                }
+            }
+
+            on("invalid parameters json") {
+                it("should throw exception") {
+                    val result = messageParametersParser.parse(invalidMessagesParametesJson())
+                    assertThat(result.isLeft()).describedAs("is left").isTrue()
+                }
+            }
+        }
+    }
+})
diff --git a/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/PayloadGeneratorTest.kt b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/PayloadGeneratorTest.kt
new file mode 100644
index 00000000..bb91245d
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/PayloadGeneratorTest.kt
@@ -0,0 +1,51 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+
+object PayloadGeneratorTest : Spek({
+
+    given("payload factory object") {
+        val payloadGenerator = PayloadGenerator()
+
+        on("raw payload generation") {
+            val size = 100
+            val generatedPayload = payloadGenerator.generateRawPayload(size)
+
+            it("should generate sequence of zeros") {
+                assertThat(generatedPayload.size()).isEqualTo(size)
+                assertThat(generatedPayload.toByteArray()).isEqualTo(ByteArray(size))
+            }
+        }
+
+        on("two generated payloads") {
+            val generatedPayload0 = payloadGenerator.generatePayload()
+            val generatedPayload1 = payloadGenerator.generatePayload()
+            it("should be different") {
+                assertThat(generatedPayload0 != generatedPayload1).isTrue()
+            }
+        }
+    }
+})
diff --git a/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/parameters.kt b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/parameters.kt
new file mode 100644
index 00000000..78cfa028
--- /dev/null
+++ b/sources/hv-collector-ves-message-generator/src/test/kotlin/org/onap/dcae/collectors/veshv/ves/message/generator/impl/parameters.kt
@@ -0,0 +1,106 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.ves.message.generator.impl
+
+import javax.json.Json
+
+private const val validMessageParameters =
+"""[
+        {
+          "commonEventHeader": {
+            "version": "sample-version",
+            "domain": "perf3gpp",
+            "sequence": 1,
+            "priority": 1,
+            "eventId": "sample-event-id",
+            "eventName": "sample-event-name",
+            "eventType": "sample-event-type",
+            "startEpochMicrosec": 120034455,
+            "lastEpochMicrosec": 120034455,
+            "nfNamingCode": "sample-nf-naming-code",
+            "nfcNamingCode": "sample-nfc-naming-code",
+            "reportingEntityId": "sample-reporting-entity-id",
+            "reportingEntityName": "sample-reporting-entity-name",
+            "sourceId": "sample-source-id",
+            "sourceName": "sample-source-name",
+            "vesEventListenerVersion": "another-version"
+          },
+          "messageType": "VALID",
+          "messagesAmount": 25000
+        },
+        {
+          "commonEventHeader": {
+            "version": "sample-version",
+            "domain": "perf3gpp",
+            "sequence": 1,
+            "priority": 1,
+            "eventId": "sample-event-id",
+            "eventName": "sample-event-name",
+            "eventType": "sample-event-type",
+            "startEpochMicrosec": 120034455,
+            "lastEpochMicrosec": 120034455,
+            "nfNamingCode": "sample-nf-naming-code",
+            "nfcNamingCode": "sample-nfc-naming-code",
+            "reportingEntityId": "sample-reporting-entity-id",
+            "reportingEntityName": "sample-reporting-entity-name",
+            "sourceId": "sample-source-id",
+            "sourceName": "sample-source-name",
+            "vesEventListenerVersion": "another-version"
+          },
+          "messageType": "TOO_BIG_PAYLOAD",
+          "messagesAmount": 100
+        }
+        ]
+"""
+
+private const val invalidMessageParameters =
+"""
+    [
+        {
+          "commonEventHeader": {
+            "version": "sample-version",
+            "domain": "perf3gpp",
+            "sequence": 1,
+            "priority": 1,
+            "eventId": "sample-event-id",
+            "eventName": "sample-event-name",
+            "eventType": "sample-event-type",
+            "startEpochMicrosec": 120034455,
+            "lastEpochMicrosec": 120034455,
+            "nfNamingCode": "sample-nf-naming-code",
+            "nfcNamingCode": "sample-nfc-naming-code",
+            "reportingEntityId": "sample-reporting-entity-id",
+            "reportingEntityName": "sample-reporting-entity-name",
+            "sourceId": "sample-source-id",
+            "sourceName": "sample-source-name",
+            "vesEventListenerVersion": "another-version"
+          },
+          "messagesAmount": 3
+        }
+        ]
+"""
+
+fun validMessagesParametesJson() = Json
+        .createReader(validMessageParameters.reader())
+        .readArray()!!
+
+fun invalidMessagesParametesJson() = Json
+        .createReader(invalidMessageParameters.reader())
+        .readArray()!!
diff --git a/sources/hv-collector-xnf-simulator/Dockerfile b/sources/hv-collector-xnf-simulator/Dockerfile
new file mode 100644
index 00000000..53e126b2
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/Dockerfile
@@ -0,0 +1,18 @@
+FROM docker.io/openjdk:11-jre-slim
+
+LABEL copyright="Copyright (C) 2018 NOKIA"
+LABEL license.name="The Apache Software License, Version 2.0"
+LABEL license.url="http://www.apache.org/licenses/LICENSE-2.0"
+LABEL maintainer="Nokia Wroclaw ONAP Team"
+
+RUN apt-get update \
+        && apt-get install -y --no-install-recommends curl \
+        && apt-get clean
+
+WORKDIR /opt/ves-hv-client-simulator
+
+ENTRYPOINT ["java", "-cp", "*:", "org.onap.dcae.collectors.veshv.simulators.xnf.MainKt"]
+
+COPY target/libs/external/* ./
+COPY target/libs/internal/* ./
+COPY target/hv-collector-xnf-simulator-*.jar ./
diff --git a/sources/hv-collector-xnf-simulator/pom.xml b/sources/hv-collector-xnf-simulator/pom.xml
new file mode 100644
index 00000000..de262567
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/pom.xml
@@ -0,0 +1,157 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>hv-collector-sources</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-xnf-simulator</artifactId>
+    <description>VES HighVolume Collector :: XNF simulator</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+    <profiles>
+        <profile>
+            <id>docker</id>
+            <activation>
+                <property>
+                    <name>!skipDocker</name>
+                </property>
+            </activation>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-dependency-plugin</artifactId>
+                    </plugin>
+                    <plugin>
+                        <groupId>io.fabric8</groupId>
+                        <artifactId>docker-maven-plugin</artifactId>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <dependencies>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-domain</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-ssl</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-utils</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-ves-message-generator</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-test-utils</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlinx</groupId>
+            <artifactId>kotlinx-coroutines-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>commons-cli</groupId>
+            <artifactId>commons-cli</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib-jdk8</artifactId>
+        </dependency>
+        <!-- See comment in main pom
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-native-epoll</artifactId>
+            <classifier>${os.detected.classifier}</classifier>
+        </dependency>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <classifier>${os.detected.classifier}</classifier>
+        </dependency>
+        -->
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish</groupId>
+            <artifactId>javax.json</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.ratpack</groupId>
+            <artifactId>ratpack-core</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/XnfSimulator.kt b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/XnfSimulator.kt
new file mode 100644
index 00000000..ee4734ae
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/XnfSimulator.kt
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.xnf.impl
+
+import arrow.core.Either
+import arrow.core.Some
+import arrow.core.Try
+import arrow.core.fix
+import arrow.effects.IO
+import arrow.instances.either.monad.monad
+import arrow.typeclasses.binding
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters.VesHvClient
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
+import java.io.InputStream
+import javax.json.Json
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+class XnfSimulator(
+        private val vesClient: VesHvClient,
+        private val messageGenerator: MessageGenerator,
+        private val messageParametersParser: MessageParametersParser = MessageParametersParser.INSTANCE) {
+
+    fun startSimulation(messageParameters: InputStream): Either<ParsingError, IO<Unit>> =
+            Either.monad<ParsingError>().binding {
+                val json = parseJsonArray(messageParameters).bind()
+                val parsed = messageParametersParser.parse(json).bind()
+                val generatedMessages = messageGenerator.createMessageFlux(parsed)
+                vesClient.sendIo(generatedMessages)
+            }.fix()
+
+    private fun parseJsonArray(jsonStream: InputStream) =
+            Try {
+                Json.createReader(jsonStream).readArray()
+            }.toEither().mapLeft { ParsingError("failed to parse JSON", Some(it)) }
+}
diff --git a/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/adapters/VesHvClient.kt b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/adapters/VesHvClient.kt
new file mode 100644
index 00000000..57aaf3db
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/adapters/VesHvClient.kt
@@ -0,0 +1,109 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters
+
+import arrow.core.Option
+import arrow.core.getOrElse
+import io.netty.handler.ssl.SslContext
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+import org.onap.dcae.collectors.veshv.domain.WireFrameEncoder
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.config.SimulatorConfiguration
+import org.onap.dcae.collectors.veshv.ssl.boundary.ClientSslContextFactory
+import org.onap.dcae.collectors.veshv.utils.arrow.asIo
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.reactivestreams.Publisher
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+import reactor.core.publisher.ReplayProcessor
+import reactor.netty.NettyOutbound
+import reactor.netty.tcp.TcpClient
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+class VesHvClient(private val configuration: SimulatorConfiguration) {
+
+    private val client: TcpClient = TcpClient.create()
+            .host(configuration.vesHost)
+            .port(configuration.vesPort)
+            .configureSsl()
+
+    private fun TcpClient.configureSsl() =
+            createSslContext(configuration.security)
+                    .map { sslContext -> this.secure(sslContext) }
+                    .getOrElse { this }
+
+    fun sendIo(messages: Flux<WireFrameMessage>) =
+            sendRx(messages).then(Mono.just(Unit)).asIo()
+
+    private fun sendRx(messages: Flux<WireFrameMessage>): Mono<Void> {
+        val complete = ReplayProcessor.create<Void>(1)
+        client
+                .handle { _, output -> handler(complete, messages, output) }
+                .connect()
+                .doOnError {
+                    logger.info("Failed to connect to VesHvCollector on " +
+                            "${configuration.vesHost}:${configuration.vesPort}")
+                }
+                .subscribe {
+                    logger.info("Connected to VesHvCollector on " +
+                            "${configuration.vesHost}:${configuration.vesPort}")
+                }
+        return complete.then()
+    }
+
+    private fun handler(complete: ReplayProcessor<Void>,
+                        messages: Flux<WireFrameMessage>,
+                        nettyOutbound: NettyOutbound): Publisher<Void> {
+
+        val allocator = nettyOutbound.alloc()
+        val encoder = WireFrameEncoder(allocator)
+        val frames = messages
+                .map(encoder::encode)
+                .window(MAX_BATCH_SIZE)
+
+        return nettyOutbound
+                .logConnectionClosed()
+                .options { it.flushOnBoundary() }
+                .sendGroups(frames)
+                .then {
+                    logger.info("Messages have been sent")
+                    complete.onComplete()
+                }
+                .then()
+    }
+
+    private fun createSslContext(config: SecurityConfiguration): Option<SslContext> =
+            ClientSslContextFactory().createSslContext(config)
+
+    private fun NettyOutbound.logConnectionClosed() =
+            withConnection { conn ->
+                conn.onTerminate().subscribe {
+                    logger.info { "Connection to ${conn.address()} has been closed" }
+                }
+            }
+
+    companion object {
+        private val logger = Logger(VesHvClient::class)
+        private const val MAX_BATCH_SIZE = 128
+    }
+}
diff --git a/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/adapters/XnfApiServer.kt b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/adapters/XnfApiServer.kt
new file mode 100644
index 00000000..06f1cffe
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/adapters/XnfApiServer.kt
@@ -0,0 +1,90 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters
+
+import arrow.core.Either
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.OngoingSimulations
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.XnfSimulator
+import org.onap.dcae.collectors.veshv.utils.http.HttpConstants
+import org.onap.dcae.collectors.veshv.utils.http.Response
+import org.onap.dcae.collectors.veshv.utils.http.Responses
+import org.onap.dcae.collectors.veshv.utils.http.sendAndHandleErrors
+import org.onap.dcae.collectors.veshv.utils.http.sendEitherErrorOrResponse
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
+import ratpack.handling.Chain
+import ratpack.handling.Context
+import ratpack.http.TypedData
+import ratpack.server.RatpackServer
+import ratpack.server.ServerConfig
+import java.util.*
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+internal class XnfApiServer(
+        private val xnfSimulator: XnfSimulator,
+        private val ongoingSimulations: OngoingSimulations) {
+
+    fun start(port: Int): IO<RatpackServer> = IO {
+        RatpackServer.start { server ->
+            server.serverConfig(ServerConfig.embedded().port(port))
+                    .handlers(this::configureHandlers)
+        }
+    }
+
+    private fun configureHandlers(chain: Chain) {
+        chain
+                .post("simulator", ::startSimulationHandler)
+                .post("simulator/async", ::startSimulationHandler)
+                .get("simulator/:id", ::simulatorStatusHandler)
+                .get("healthcheck") { ctx ->
+                    logger.info("Checking health")
+                    ctx.response.status(HttpConstants.STATUS_OK).send()
+                }
+    }
+
+    private fun startSimulationHandler(ctx: Context) {
+        logger.info("Starting asynchronous scenario")
+        ctx.request.body.then { body ->
+            val id = startSimulation(body)
+            ctx.response.sendEitherErrorOrResponse(id)
+        }
+    }
+
+    private fun startSimulation(body: TypedData): Either<ParsingError, Response> {
+        return xnfSimulator.startSimulation(body.inputStream)
+                .map(ongoingSimulations::startAsynchronousSimulation)
+                .map(Responses::acceptedResponse)
+    }
+
+    private fun simulatorStatusHandler(ctx: Context) {
+        val id = UUID.fromString(ctx.pathTokens["id"])
+        val status = ongoingSimulations.status(id)
+        val response = Responses.statusResponse(status.toString(), status.message)
+        ctx.response.sendAndHandleErrors(IO.just(response))
+    }
+
+    companion object {
+        private val logger = Logger(XnfApiServer::class)
+    }
+}
diff --git a/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/config/ArgXnfSimulatorConfiguration.kt b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/config/ArgXnfSimulatorConfiguration.kt
new file mode 100644
index 00000000..0b321362
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/config/ArgXnfSimulatorConfiguration.kt
@@ -0,0 +1,74 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.xnf.impl.config
+
+import arrow.core.Option
+import arrow.core.fix
+import arrow.instances.option.monad.monad
+import arrow.typeclasses.binding
+import org.apache.commons.cli.CommandLine
+import org.apache.commons.cli.DefaultParser
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.ssl.boundary.createSecurityConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.ArgBasedConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.KEY_STORE_FILE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.KEY_STORE_PASSWORD
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.LISTEN_PORT
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.MAXIMUM_PAYLOAD_SIZE_BYTES
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.SSL_DISABLE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.TRUST_STORE_FILE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.TRUST_STORE_PASSWORD
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.VES_HV_HOST
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.VES_HV_PORT
+import org.onap.dcae.collectors.veshv.utils.commandline.intValue
+import org.onap.dcae.collectors.veshv.utils.commandline.stringValue
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+internal class ArgXnfSimulatorConfiguration : ArgBasedConfiguration<SimulatorConfiguration>(DefaultParser()) {
+    override val cmdLineOptionsList = listOf(
+            VES_HV_PORT,
+            VES_HV_HOST,
+            LISTEN_PORT,
+            MAXIMUM_PAYLOAD_SIZE_BYTES,
+            SSL_DISABLE,
+            KEY_STORE_FILE,
+            KEY_STORE_PASSWORD,
+            TRUST_STORE_FILE,
+            TRUST_STORE_PASSWORD)
+
+    override fun getConfiguration(cmdLine: CommandLine): Option<SimulatorConfiguration> =
+            Option.monad().binding {
+                val listenPort = cmdLine.intValue(LISTEN_PORT).bind()
+                val vesHost = cmdLine.stringValue(VES_HV_HOST).bind()
+                val vesPort = cmdLine.intValue(VES_HV_PORT).bind()
+                val maxPayloadSizeBytes = cmdLine.intValue(MAXIMUM_PAYLOAD_SIZE_BYTES,
+                        WireFrameMessage.DEFAULT_MAX_PAYLOAD_SIZE_BYTES)
+
+                SimulatorConfiguration(
+                        listenPort,
+                        vesHost,
+                        vesPort,
+                        maxPayloadSizeBytes,
+                        createSecurityConfiguration(cmdLine).bind())
+            }.fix()
+}
diff --git a/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/config/SimulatorConfiguration.kt b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/config/SimulatorConfiguration.kt
new file mode 100644
index 00000000..3395d282
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/config/SimulatorConfiguration.kt
@@ -0,0 +1,33 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.xnf.impl.config
+
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+data class SimulatorConfiguration(
+        val listenPort: Int,
+        val vesHost: String,
+        val vesPort: Int,
+        val maxPayloadSizeBytes: Int,
+        val security: SecurityConfiguration)
diff --git a/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/simulations.kt b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/simulations.kt
new file mode 100644
index 00000000..21748ae8
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/simulations.kt
@@ -0,0 +1,76 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.xnf.impl
+
+import arrow.effects.IO
+import kotlinx.coroutines.asCoroutineDispatcher
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters.XnfApiServer
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import java.util.*
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.Executor
+import java.util.concurrent.Executors
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+class OngoingSimulations(executor: Executor = Executors.newCachedThreadPool()) {
+    private val asyncSimulationContext = executor.asCoroutineDispatcher()
+    private val simulations = ConcurrentHashMap<UUID, Status>()
+
+    fun startAsynchronousSimulation(simulationIo: IO<Unit>): UUID {
+        val id = UUID.randomUUID()
+        simulations[id] = StatusOngoing
+
+        simulationIo.continueOn(asyncSimulationContext).unsafeRunAsync { result ->
+            result.fold(
+                    { err ->
+                        logger.warn("Error", err)
+                        simulations[id] = StatusFailure(err)
+                    },
+                    {
+                        logger.info("Finished sending messages")
+                        simulations[id] = StatusSuccess
+                    }
+            )
+        }
+        return id
+    }
+
+    fun status(id: UUID) = simulations.getOrDefault(id, StatusNotFound)
+
+    internal fun clear() {
+        simulations.clear()
+    }
+
+    companion object {
+        private val logger = Logger(XnfApiServer::class)
+    }
+}
+
+sealed class Status(val message: String) {
+    override fun toString() = this::class.simpleName ?: "null"
+}
+
+object StatusNotFound : Status("not found")
+object StatusOngoing : Status("ongoing")
+object StatusSuccess : Status("success")
+data class StatusFailure(val cause: Throwable) : Status("Error ${cause.message}")
diff --git a/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/main.kt b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/main.kt
new file mode 100644
index 00000000..4512dfbf
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/main.kt
@@ -0,0 +1,61 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.xnf
+
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.OngoingSimulations
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.XnfSimulator
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.config.ArgXnfSimulatorConfiguration
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters.XnfApiServer
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters.VesHvClient
+import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
+import org.onap.dcae.collectors.veshv.utils.arrow.unsafeRunEitherSync
+import org.onap.dcae.collectors.veshv.utils.arrow.unit
+import org.onap.dcae.collectors.veshv.utils.commandline.handleWrongArgumentErrorCurried
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.dcae.collectors.veshv.ves.message.generator.factory.MessageGeneratorFactory
+
+private const val PACKAGE_NAME = "org.onap.dcae.collectors.veshv.simulators.xnf"
+private val logger = Logger(PACKAGE_NAME)
+const val PROGRAM_NAME = "java $PACKAGE_NAME.MainKt"
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+fun main(args: Array<String>) = ArgXnfSimulatorConfiguration().parse(args)
+        .mapLeft(handleWrongArgumentErrorCurried(PROGRAM_NAME))
+        .map { config ->
+            logger.info("Using configuration: $config")
+            val xnfSimulator = XnfSimulator(
+                    VesHvClient(config),
+                    MessageGeneratorFactory.create(config.maxPayloadSizeBytes))
+            XnfApiServer(xnfSimulator, OngoingSimulations())
+                    .start(config.listenPort)
+                    .unit()
+        }
+        .unsafeRunEitherSync(
+                { ex ->
+                    logger.error("Failed to start a server", ex)
+                    ExitFailure(1)
+                },
+                {
+                    logger.info("Started xNF Simulator API server")
+                }
+        )
diff --git a/sources/hv-collector-xnf-simulator/src/main/resources/logback.xml b/sources/hv-collector-xnf-simulator/src/main/resources/logback.xml
new file mode 100644
index 00000000..809f62d4
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/main/resources/logback.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <property name="LOG_FILE"
+    value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}ves-hv.log}"/>
+  <property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %-5level [%-40.40logger{10}] - %msg%n"/>
+
+  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>
+        %d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC} %highlight(%-5level) [%-40.40logger{10}] - %msg%n
+      </pattern>
+    </encoder>
+  </appender>
+
+    <appender name="ROLLING-FILE"
+      class="ch.qos.logback.core.rolling.RollingFileAppender">
+      <encoder>
+        <pattern>${FILE_LOG_PATTERN}</pattern>
+      </encoder>
+      <file>${LOG_FILE}</file>
+      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+        <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
+        <maxFileSize>50MB</maxFileSize>
+        <maxHistory>30</maxHistory>
+        <totalSizeCap>10GB</totalSizeCap>
+      </rollingPolicy>
+    </appender>
+
+  <logger name="org.onap.dcae.collectors.veshv" level="DEBUG"/>
+
+  <root level="INFO">
+      <appender-ref ref="CONSOLE"/>
+      <appender-ref ref="ROLLING-FILE"/>
+    </root>
+</configuration>
\ No newline at end of file
diff --git a/sources/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/OngoingSimulationsTest.kt b/sources/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/OngoingSimulationsTest.kt
new file mode 100644
index 00000000..a04da7bf
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/OngoingSimulationsTest.kt
@@ -0,0 +1,106 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import arrow.effects.IO
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.OngoingSimulations
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.StatusFailure
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.StatusNotFound
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.StatusOngoing
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.StatusSuccess
+import org.onap.dcae.collectors.veshv.tests.utils.waitUntilSucceeds
+import java.util.*
+import java.util.concurrent.Executors
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+internal class OngoingSimulationsTest : Spek({
+    val executor = Executors.newSingleThreadExecutor()
+    val cut = OngoingSimulations(executor)
+
+    describe("simulations repository") {
+        given("not existing task task id") {
+            val id = UUID.randomUUID()
+
+            on("status") {
+                val result = cut.status(id)
+
+                it("should have 'not found' status") {
+                    assertThat(result).isEqualTo(StatusNotFound)
+                }
+            }
+        }
+
+        given("never ending task") {
+            val task = IO.async<Unit> { }
+
+            on("startAsynchronousSimulation") {
+                val result = cut.startAsynchronousSimulation(task)
+
+                it("should have ongoing status") {
+                    assertThat(cut.status(result)).isEqualTo(StatusOngoing)
+                }
+            }
+        }
+
+        given("failing task") {
+            val cause = RuntimeException("facepalm")
+            val task = IO.raiseError<Unit>(cause)
+
+            on("startAsynchronousSimulation") {
+                val result = cut.startAsynchronousSimulation(task)
+
+                it("should have failing status") {
+                    waitUntilSucceeds {
+                        assertThat(cut.status(result)).isEqualTo(StatusFailure(cause))
+                    }
+                }
+            }
+        }
+
+        given("successful task") {
+            val task = IO { println("great success!") }
+
+            on("startAsynchronousSimulation") {
+                val result = cut.startAsynchronousSimulation(task)
+
+                it("should have successful status") {
+                    waitUntilSucceeds {
+                        assertThat(cut.status(result)).isEqualTo(StatusSuccess)
+                    }
+                }
+            }
+        }
+
+        afterGroup {
+            executor.shutdown()
+        }
+    }
+
+    afterEachTest { cut.clear() }
+})
diff --git a/sources/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/XnfSimulatorTest.kt b/sources/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/XnfSimulatorTest.kt
new file mode 100644
index 00000000..95510e77
--- /dev/null
+++ b/sources/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/XnfSimulatorTest.kt
@@ -0,0 +1,114 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.main
+
+import arrow.core.Left
+import arrow.core.None
+import arrow.core.Right
+import arrow.effects.IO
+import com.nhaarman.mockitokotlin2.any
+import com.nhaarman.mockitokotlin2.mock
+import com.nhaarman.mockitokotlin2.whenever
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.XnfSimulator
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters.VesHvClient
+import org.onap.dcae.collectors.veshv.tests.utils.Assertions.assertThat
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
+import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
+import reactor.core.publisher.Flux
+import java.io.ByteArrayInputStream
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since September 2018
+ */
+internal class XnfSimulatorTest : Spek({
+    lateinit var cut: XnfSimulator
+    lateinit var vesClient: VesHvClient
+    lateinit var messageParametersParser: MessageParametersParser
+    lateinit var messageGenerator: MessageGenerator
+
+    beforeEachTest {
+        vesClient = mock()
+        messageParametersParser = mock()
+        messageGenerator = mock()
+        cut = XnfSimulator(vesClient, messageGenerator, messageParametersParser)
+    }
+
+    describe("startSimulation") {
+        it("should fail when empty input stream") {
+            // given
+            val emptyInputStream = ByteArrayInputStream(byteArrayOf())
+
+            // when
+            val result = cut.startSimulation(emptyInputStream)
+
+            // then
+            assertThat(result).isLeft()
+        }
+
+        it("should fail when invalid JSON") {
+            // given
+            val invalidJson = "invalid json".byteInputStream()
+
+            // when
+            val result = cut.startSimulation(invalidJson)
+
+            // then
+            assertThat(result).isLeft()
+        }
+
+        it("should fail when JSON syntax is valid but content is invalid") {
+            // given
+            val json = "[1,2,3]".byteInputStream()
+            val cause = ParsingError("epic fail", None)
+            whenever(messageParametersParser.parse(any())).thenReturn(
+                    Left(cause))
+
+            // when
+            val result = cut.startSimulation(json)
+
+            // then
+            assertThat(result).left().isEqualTo(cause)
+        }
+
+        it("should return generated messages") {
+            // given
+            val json = "[true]".byteInputStream()
+            val messageParams = listOf<MessageParameters>()
+            val generatedMessages = Flux.empty<WireFrameMessage>()
+            val sendingIo = IO {}
+            whenever(messageParametersParser.parse(any())).thenReturn(Right(messageParams))
+            whenever(messageGenerator.createMessageFlux(messageParams)).thenReturn(generatedMessages)
+            whenever(vesClient.sendIo(generatedMessages)).thenReturn(sendingIo)
+
+            // when
+            val result = cut.startSimulation(json)
+
+            // then
+            assertThat(result).right().isSameAs(sendingIo)
+        }
+    }
+})
diff --git a/sources/pom.xml b/sources/pom.xml
new file mode 100644
index 00000000..06726bbb
--- /dev/null
+++ b/sources/pom.xml
@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ ============LICENSE_START=======================================================
+  ~ dcaegen2-collectors-veshv
+  ~ ================================================================================
+  ~ Copyright (C) 2018 NOKIA
+  ~ ================================================================================
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~ ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.hv-ves</groupId>
+        <artifactId>ves-hv-collector</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-sources</artifactId>
+    <version>1.1.0-SNAPSHOT</version>
+    <description>VES HighVolume Collector :: Sources</description>
+    <packaging>pom</packaging>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-checkstyle-plugin</artifactId>
+                <version>2.17</version>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.onap.oparent</groupId>
+                        <artifactId>checkstyle</artifactId>
+                        <version>1.1.1</version>
+                    </dependency>
+                </dependencies>
+                <executions>
+                    <execution>
+                        <!-- To override oparent configuration different id must be used
+                             We need to override it to include .kt files in check. -->
+                        <id>check-license-kotlin</id>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                        <phase>process-sources</phase>
+                        <configuration>
+                            <configLocation>onap-checkstyle/check-license.xml</configLocation>
+                            <includeResources>false</includeResources>
+                            <includeTestSourceDirectory>true</includeTestSourceDirectory>
+                            <includeTestResources>false</includeTestResources>
+                            <includes>**\/*.kt</includes>
+                            <consoleOutput>true</consoleOutput>
+                            <!--<failOnViolation>false</failOnViolation>-->
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-antrun-plugin</artifactId>
+                <version>1.8</version>
+                <executions>
+                    <execution>
+                        <!-- This can be run separately with mvn antrun:run@detekt -->
+                        <id>detekt</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>run</goal>
+                        </goals>
+                        <configuration>
+                            <target name="detekt" unless="${skipAnalysis}">
+                                <java taskname="detekt" dir="${basedir}" fork="true" failonerror="true" classname="io.gitlab.arturbosch.detekt.cli.Main" classpathref="maven.plugin.classpath">
+                                    <arg value="--input"/>
+                                    <arg value="${basedir}/src/main/kotlin"/>
+                                    <arg value="--config-resource"/>
+                                    <arg value="onap-detekt-config.yml"/>
+                                    <arg value="--filters"/>
+                                    <arg value=".*/target/.*,.*/resources/.*"/>
+                                    <arg value="--report"/>
+                                    <arg value="html:${basedir}/target/detekt-report.html"/>
+                                </java>
+                            </target>
+                        </configuration>
+                    </execution>
+                </executions>
+                <dependencies>
+                    <dependency>
+                        <groupId>io.gitlab.arturbosch.detekt</groupId>
+                        <artifactId>detekt-cli</artifactId>
+                        <version>${detekt.version}</version>
+                    </dependency>
+                    <dependency>
+                        <groupId>${project.groupId}</groupId>
+                        <artifactId>hv-collector-analysis</artifactId>
+                        <version>1.1.0-SNAPSHOT</version>
+                    </dependency>
+                </dependencies>
+            </plugin>
+        </plugins>
+    </build>
+
+    <modules>
+        <module>hv-collector-core</module>
+        <module>hv-collector-ct</module>
+        <module>hv-collector-dcae-app-simulator</module>
+        <module>hv-collector-domain</module>
+        <module>hv-collector-health-check</module>
+        <module>hv-collector-main</module>
+        <module>hv-collector-ssl</module>
+        <module>hv-collector-test-utils</module>
+        <module>hv-collector-utils</module>
+        <module>hv-collector-ves-message-generator</module>
+        <module>hv-collector-xnf-simulator</module>
+    </modules>
+</project>