Rename hv-collector-client-simulator

New name: hv-collector-xnf-simulator

Closes ONAP-492

Change-Id: I161dda0d01e90bfe35e5e2d575ec9e81cc8bf3c3
Signed-off-by: Jakub Dudycz <jdudycz@nokia.com>
Issue-ID: DCAEGEN2-601

17 files changed, 1145 insertions, 0 deletions

diff --git a/hv-collector-xnf-simulator/Dockerfile b/hv-collector-xnf-simulator/Dockerfile
new file mode 100644
index 00000000..b713bafc
--- /dev/null
+++ b/hv-collector-xnf-simulator/Dockerfile
@@ -0,0 +1,15 @@
+FROM openjdk:10-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"
+
+EXPOSE 5000
+
+WORKDIR /opt/ves-hv-client-simulator
+ENTRYPOINT ["java", "-cp", "*:", "org.onap.dcae.collectors.veshv.simulators.xnf.MainKt"]
+CMD ["--ves-host", "ves-hv-collector", "--ves-port", "6061"]
+COPY target/libs/external/* ./
+COPY target/libs/internal/* ./
+COPY target/hv-collector-xnf-simulator-*.jar ./
diff --git a/hv-collector-xnf-simulator/pom.xml b/hv-collector-xnf-simulator/pom.xml
new file mode 100644
index 00000000..9af2246d
--- /dev/null
+++ b/hv-collector-xnf-simulator/pom.xml
@@ -0,0 +1,162 @@
+<?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.veshv</groupId>
+        <artifactId>ves-hv-collector</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-xnf-simulator</artifactId>
+    <description>VES HighVolume Collector :: XNF simulator</description>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+        <docker-image.name>ves-hv-collector-xnf-simulator</docker-image.name>
+    </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>
+                    <!-- TODO: unskip docker
+                    <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>io.arrow-kt</groupId>
+            <artifactId>arrow-effects</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>io.netty</groupId>
+            <artifactId>netty-tcnative-boringssl-static</artifactId>
+            <scope>runtime</scope>
+            <classifier>${os.detected.classifier}</classifier>
+        </dependency>
+        <dependency>
+            <groupId>com.nhaarman</groupId>
+            <artifactId>mockito-kotlin</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</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>
+        <dependency>
+            <groupId>io.ratpack</groupId>
+            <artifactId>ratpack-core</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/hv-collector-xnf-simulator/sample-request.json b/hv-collector-xnf-simulator/sample-request.json
new file mode 100644
index 00000000..ca8bd885
--- /dev/null
+++ b/hv-collector-xnf-simulator/sample-request.json
@@ -0,0 +1,20 @@
+{ 
+      "commonEventHeader": {
+                "version": "sample-version",
+                "domain": 10,
+                "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"
+        },
+        "messagesAmount": 25000
+}
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/api/MessageGenerator.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/api/MessageGenerator.kt
new file mode 100644
index 00000000..f4c92fd4
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/api/MessageGenerator.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.simulators.xnf.api
+
+import org.onap.dcae.collectors.veshv.domain.WireFrame
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.MessageParameters
+import reactor.core.publisher.Flux
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+interface MessageGenerator {
+    fun createMessageFlux(messageParameters: MessageParameters): Flux<WireFrame>
+}
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/ArgConfigurationProvider.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/ArgConfigurationProvider.kt
new file mode 100644
index 00000000..04654f8c
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/ArgConfigurationProvider.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.simulators.xnf.config
+
+import org.apache.commons.cli.CommandLine
+import org.apache.commons.cli.DefaultParser
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.ArgBasedConfiguration
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.CERT_FILE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.MESSAGES_TO_SEND_AMOUNT
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.PRIVATE_KEY_FILE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.TRUST_CERT_FILE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.VES_HV_HOST
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.VES_HV_PORT
+
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+internal class ArgConfigurationProvider : ArgBasedConfiguration<SimulatorConfiguration>(DefaultParser()) {
+    override val cmdLineOptionsList = listOf(
+            VES_HV_PORT,
+            VES_HV_HOST,
+            MESSAGES_TO_SEND_AMOUNT,
+            PRIVATE_KEY_FILE,
+            CERT_FILE,
+            TRUST_CERT_FILE
+    )
+
+    override fun getConfiguration(cmdLine: CommandLine): SimulatorConfiguration {
+        val host = cmdLine.stringValue(VES_HV_HOST, DefaultValues.VES_HV_HOST)
+        val port = cmdLine.intValue(VES_HV_PORT, DefaultValues.VES_HV_PORT)
+        val messagesAmount = cmdLine.longValue(MESSAGES_TO_SEND_AMOUNT, DefaultValues.MESSAGES_AMOUNT)
+        return SimulatorConfiguration(
+                host,
+                port,
+                parseSecurityConfig(cmdLine),
+                messagesAmount)
+    }
+
+    private fun parseSecurityConfig(cmdLine: CommandLine): SecurityConfiguration {
+        val pkFile = cmdLine.stringValue(PRIVATE_KEY_FILE, DefaultValues.PRIVATE_KEY_FILE)
+        val certFile = cmdLine.stringValue(CERT_FILE, DefaultValues.CERT_FILE)
+        val trustCertFile = cmdLine.stringValue(TRUST_CERT_FILE, DefaultValues.TRUST_CERT_FILE)
+        return SecurityConfiguration(
+                privateKey = stringPathToPath(pkFile),
+                cert = stringPathToPath(certFile),
+                trustedCert = stringPathToPath(trustCertFile))
+    }
+
+    internal object DefaultValues {
+        const val MESSAGES_AMOUNT = -1L
+        const val PRIVATE_KEY_FILE = "/etc/ves-hv/client.key"
+        const val CERT_FILE = "/etc/ves-hv/client.crt"
+        const val TRUST_CERT_FILE = "/etc/ves-hv/trust.crt"
+        const val VES_HV_PORT = 6061
+        const val VES_HV_HOST = "veshvcollector"
+    }
+}
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/MessageParameters.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/MessageParameters.kt
new file mode 100644
index 00000000..f993f45a
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/MessageParameters.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.simulators.xnf.config
+
+import org.onap.ves.VesEventV5.VesEvent.CommonEventHeader
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+data class MessageParameters(val commonEventHeader: CommonEventHeader, val amount: Long = -1)
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/SimulatorConfiguration.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/SimulatorConfiguration.kt
new file mode 100644
index 00000000..1052cfcc
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/config/SimulatorConfiguration.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.simulators.xnf.config
+
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+internal data class SimulatorConfiguration(
+        val vesHost: String,
+        val vesPort: Int,
+        val security: SecurityConfiguration,
+        val messagesAmount: Long)
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/factory.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/factory.kt
new file mode 100644
index 00000000..dce386b1
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/factory.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.simulators.xnf
+
+import org.onap.dcae.collectors.veshv.simulators.xnf.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.MessageGeneratorImpl
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.PayloadGenerator
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+fun createMessageGenerator(): MessageGenerator = MessageGeneratorImpl(PayloadGenerator())
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/HttpServer.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/HttpServer.kt
new file mode 100644
index 00000000..b67bc644
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/HttpServer.kt
@@ -0,0 +1,116 @@
+/*
+ * ============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 org.onap.dcae.collectors.veshv.domain.WireFrame
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.MessageParameters
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import ratpack.exec.Promise
+import ratpack.handling.Chain
+import ratpack.handling.Context
+import ratpack.server.RatpackServer
+import ratpack.server.ServerConfig
+import reactor.core.publisher.Flux
+import reactor.core.scheduler.Schedulers
+import javax.json.Json
+import javax.json.JsonObject
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+internal class HttpServer(private val vesClient: XnfSimulator) {
+
+    fun start(port: Int = DEFAULT_PORT): IO<RatpackServer> = IO {
+        RatpackServer.start { server ->
+            server.serverConfig(ServerConfig.embedded().port(port))
+                    .handlers(this::configureHandlers)
+        }
+    }
+
+
+    private fun configureHandlers(chain: Chain) {
+        chain
+                .post("simulator/sync") { ctx ->
+                    createMessageFlux(ctx)
+                            .map { vesClient.sendIo(it) }
+                            .map { it.unsafeRunSync() }
+                            .onError { handleException(it, ctx) }
+                            .then { sendAcceptedResponse(ctx) }
+                }
+                .post("simulator/async") { ctx ->
+                    createMessageFlux(ctx)
+                            .map { vesClient.sendRx(it) }
+                            .map { it.subscribeOn(Schedulers.elastic()).subscribe() }
+                            .onError { handleException(it, ctx) }
+                            .then { sendAcceptedResponse(ctx) }
+                }
+    }
+
+    private fun createMessageFlux(ctx: Context): Promise<Flux<WireFrame>> {
+        return ctx.request.body
+                .map { Json.createReader(it.inputStream).readObject() }
+                .map { extractMessageParameters(it) }
+                .map { MessageGeneratorImpl.INSTANCE.createMessageFlux(it) }
+    }
+
+    private fun sendAcceptedResponse(ctx: Context) {
+        ctx.response
+                .status(STATUS_OK)
+                .send(CONTENT_TYPE_APPLICATION_JSON, Json.createObjectBuilder()
+                        .add("response", "Request accepted")
+                        .build()
+                        .toString())
+    }
+
+    private fun handleException(t: Throwable, ctx: Context) {
+        logger.warn("Failed to process the request - ${t.localizedMessage}")
+        logger.debug("Exception thrown when processing the request", t)
+        ctx.response
+                .status(STATUS_BAD_REQUEST)
+                .send(CONTENT_TYPE_APPLICATION_JSON, Json.createObjectBuilder()
+                        .add("response", "Request was not accepted")
+                        .add("exception", t.localizedMessage)
+                        .build()
+                        .toString())
+    }
+
+    private fun extractMessageParameters(request: JsonObject): MessageParameters =
+            try {
+                val commonEventHeader = MessageGeneratorImpl.INSTANCE
+                        .parseCommonHeader(request.getJsonObject("commonEventHeader"))
+                val messagesAmount = request.getJsonNumber("messagesAmount").longValue()
+                MessageParameters(commonEventHeader, messagesAmount)
+            } catch (e: Exception) {
+                throw ValidationException("Validating request body failed", e)
+            }
+
+
+    companion object {
+        private val logger = Logger(HttpServer::class)
+        const val DEFAULT_PORT = 5000
+        const val STATUS_OK = 200
+        const val STATUS_BAD_REQUEST = 400
+        const val CONTENT_TYPE_APPLICATION_JSON = "application/json"
+    }
+}
+
+internal class ValidationException(message: String?, cause: Exception) : Exception(message, cause)
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/MessageGeneratorImpl.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/MessageGeneratorImpl.kt
new file mode 100644
index 00000000..0d28bad0
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/MessageGeneratorImpl.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.simulators.xnf.impl
+
+import com.google.protobuf.ByteString
+import org.onap.dcae.collectors.veshv.domain.WireFrame
+import org.onap.dcae.collectors.veshv.simulators.xnf.api.MessageGenerator
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.MessageParameters
+import org.onap.ves.VesEventV5.VesEvent
+import org.onap.ves.VesEventV5.VesEvent.CommonEventHeader
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+import javax.json.JsonObject
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+internal class MessageGeneratorImpl(private val payloadGenerator: PayloadGenerator) : MessageGenerator {
+
+    override fun createMessageFlux(messageParameters: MessageParameters): Flux<WireFrame> =
+            Mono.fromCallable { createMessage(messageParameters.commonEventHeader) }.let {
+                if (messageParameters.amount < 0)
+                    it.repeat()
+                else
+                    it.repeat(messageParameters.amount)
+            }
+
+    fun parseCommonHeader(json: JsonObject): CommonEventHeader = CommonEventHeader.newBuilder()
+            .setVersion(json.getString("version"))
+            .setDomain(CommonEventHeader.Domain.forNumber(json.getInt("domain")))
+            .setSequence(json.getInt("sequence"))
+            .setPriority(CommonEventHeader.Priority.forNumber(json.getInt("priority")))
+            .setEventId(json.getString("eventId"))
+            .setEventName(json.getString("eventName"))
+            .setEventType(json.getString("eventType"))
+            .setStartEpochMicrosec(json.getJsonNumber("startEpochMicrosec").longValue())
+            .setLastEpochMicrosec(json.getJsonNumber("lastEpochMicrosec").longValue())
+            .setNfNamingCode(json.getString("nfNamingCode"))
+            .setNfcNamingCode(json.getString("nfcNamingCode"))
+            .setReportingEntityId(json.getString("reportingEntityId"))
+            .setReportingEntityName(ByteString.copyFromUtf8(json.getString("reportingEntityName")))
+            .setSourceId(ByteString.copyFromUtf8(json.getString("sourceId")))
+            .setSourceName(json.getString("sourceName"))
+            .build()
+
+
+    private fun createMessage(commonHeader: CommonEventHeader): WireFrame =
+            WireFrame(vesMessageBytes(commonHeader))
+
+
+    private fun vesMessageBytes(commonHeader: CommonEventHeader): ByteArray =
+            VesEvent.newBuilder()
+                    .setCommonEventHeader(commonHeader)
+                    .setHvRanMeasFields(payloadGenerator.generatePayload().toByteString())
+                    .build()
+                    .toByteArray()
+
+    companion object {
+        val INSTANCE = MessageGeneratorImpl(PayloadGenerator())
+    }
+}
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/PayloadGenerator.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/PayloadGenerator.kt
new file mode 100644
index 00000000..c8b97639
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/PayloadGenerator.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.xnf.impl
+
+import org.onap.ves.HVRanMeasFieldsV5.HVRanMeasFields.HVRanMeasPayload
+import org.onap.ves.HVRanMeasFieldsV5.HVRanMeasFields.HVRanMeasPayload.PMObject
+import org.onap.ves.HVRanMeasFieldsV5.HVRanMeasFields.HVRanMeasPayload.PMObject.HVRanMeas
+import java.util.*
+
+internal class PayloadGenerator {
+
+    private val randomGenerator = Random()
+
+    fun generatePayload(numOfCountPerMeas: Long = 2, numOfMeasPerObject: Int = 2): HVRanMeasPayload {
+        val pmObject = generatePmObject(numOfCountPerMeas, numOfMeasPerObject)
+        return HVRanMeasPayload.newBuilder()
+                .addPmObject(pmObject)
+                .build()
+    }
+
+    private fun generatePmObject(numOfCountPerMeas: Long, numOfMeasPerObject: Int): PMObject {
+        val hvRanMeasList = MutableList(numOfMeasPerObject) { generateHvRanMeas(numOfCountPerMeas) }
+        val finalUriName = URI_BASE_NAME + randomGenerator.nextInt(UPPER_URI_NUMBER_BOUND)
+        return HVRanMeasPayload.PMObject.newBuilder()
+                .setUri(finalUriName)
+                .addAllHvRanMeas(hvRanMeasList.asIterable())
+                .build()
+    }
+
+    private fun generateHvRanMeas(numOfCountPerMeas: Long): HVRanMeas {
+        return HVRanMeasPayload.PMObject.HVRanMeas.newBuilder()
+                .setMeasurementId(randomGenerator.nextInt())
+                .addAllCounterSubid(Iterable { randomGenerator.ints(numOfCountPerMeas).iterator() })
+                .addAllCounterValue(Iterable { randomGenerator.longs(numOfCountPerMeas).iterator() })
+                .setSuspectFlagIncomplete(false)
+                .setSuspectFlagOutOfSync(false)
+                .build()
+    }
+
+    companion object {
+        private const val URI_BASE_NAME = "sample/uri"
+        private const val UPPER_URI_NUMBER_BOUND = 10_000
+    }
+
+}
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/XnfSimulator.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/XnfSimulator.kt
new file mode 100644
index 00000000..6487888e
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/XnfSimulator.kt
@@ -0,0 +1,121 @@
+/*
+ * ============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 io.netty.buffer.Unpooled
+import io.netty.handler.ssl.ClientAuth
+import io.netty.handler.ssl.SslContext
+import io.netty.handler.ssl.SslContextBuilder
+import io.netty.handler.ssl.SslProvider
+import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
+import org.onap.dcae.collectors.veshv.domain.WireFrame
+import org.onap.dcae.collectors.veshv.domain.WireFrameEncoder
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.SimulatorConfiguration
+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.ipc.netty.NettyOutbound
+import reactor.ipc.netty.tcp.TcpClient
+
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+internal class XnfSimulator(private val configuration: SimulatorConfiguration) {
+
+    private val client: TcpClient = TcpClient.builder()
+            .options { opts ->
+                opts.host(configuration.vesHost)
+                        .port(configuration.vesPort)
+                        .sslContext(createSslContext(configuration.security))
+            }
+            .build()
+
+    fun sendIo(messages: Flux<WireFrame>) = IO<Unit> {
+        sendRx(messages).block()
+    }
+
+    fun sendRx(messages: Flux<WireFrame>): Mono<Void> {
+        val complete = ReplayProcessor.create<Void>(1)
+        client
+                .newHandler { _, output -> handler(complete, messages, output) }
+                .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<WireFrame>, nettyOutbound: NettyOutbound):
+            Publisher<Void> {
+        val encoder = WireFrameEncoder(nettyOutbound.alloc())
+        val context = nettyOutbound.context()
+
+        context.onClose {
+            logger.info { "Connection to ${context.address()} has been closed" }
+        }
+
+        // TODO: Close channel after all messages have been sent
+        // The code bellow doesn't work because it closes the channel earlier and not all are consumed...
+//        complete.subscribe {
+//            context.channel().disconnect().addListener {
+//                if (it.isSuccess)
+//                    logger.info { "Connection closed" }
+//                else
+//                    logger.warn("Failed to close the connection", it.cause())
+//            }
+//        }
+
+        val frames = messages
+                .map(encoder::encode)
+                .window(MAX_BATCH_SIZE)
+
+        return nettyOutbound
+                .options { it.flushOnBoundary() }
+                .sendGroups(frames)
+                .send(Mono.just(Unpooled.EMPTY_BUFFER))
+                .then {
+                    logger.info("Messages have been sent")
+                    complete.onComplete()
+                }
+                .then()
+    }
+
+    private fun createSslContext(config: SecurityConfiguration): SslContext =
+            SslContextBuilder.forClient()
+                    .keyManager(config.cert.toFile(), config.privateKey.toFile())
+                    .trustManager(config.trustedCert.toFile())
+                    .sslProvider(SslProvider.OPENSSL)
+                    .clientAuth(ClientAuth.REQUIRE)
+                    .build()
+
+    companion object {
+        private const val MAX_BATCH_SIZE = 128
+        private val logger = Logger(XnfSimulator::class)
+    }
+}
diff --git a/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/main.kt b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/main.kt
new file mode 100644
index 00000000..facf611a
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/main.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.simulators.xnf
+
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.ArgConfigurationProvider
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.HttpServer
+import org.onap.dcae.collectors.veshv.simulators.xnf.impl.XnfSimulator
+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.void
+import org.onap.dcae.collectors.veshv.utils.commandline.handleWrongArgumentErrorCurried
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+
+private const val PACKAGE_NAME = "org.onap.dcae.collectors.veshv.simulators.xnf"
+private val logger = Logger(PACKAGE_NAME)
+const val PROGRAM_NAME = "java $PACKAGE_NAME.MainKt"
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+fun main(args: Array<String>) =
+    ArgConfigurationProvider().parse(args)
+            .mapLeft(handleWrongArgumentErrorCurried(PROGRAM_NAME))
+            .map(::XnfSimulator)
+            .map(::HttpServer)
+            .map { it.start().void() }
+            .unsafeRunEitherSync(
+                    { ex ->
+                        logger.error("Failed to start a server", ex)
+                        ExitFailure(1)
+                    },
+                    {
+                        logger.info("Started xNF Simulator API server")
+                    }
+            )
diff --git a/hv-collector-xnf-simulator/src/main/resources/logback.xml b/hv-collector-xnf-simulator/src/main/resources/logback.xml
new file mode 100644
index 00000000..809f62d4
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/main/resources/logback.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <property name="LOG_FILE"
+    value="${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/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/config/ArgConfigurationProviderTest.kt b/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/config/ArgConfigurationProviderTest.kt
new file mode 100644
index 00000000..f2f92fff
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/main/config/ArgConfigurationProviderTest.kt
@@ -0,0 +1,126 @@
+/*
+ * ============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.config
+
+import arrow.core.identity
+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.SecurityConfiguration
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.ArgConfigurationProvider
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.ArgConfigurationProvider.*
+import org.onap.dcae.collectors.veshv.simulators.xnf.config.SimulatorConfiguration
+import java.nio.file.Paths
+
+
+object ArgConfigurationProviderTest : Spek({
+    lateinit var cut: ArgConfigurationProvider
+    val messagesAmount = 3L
+    val vesHost = "localhosting"
+    val pk = Paths.get("/", "etc", "ves", "pk.pem")
+    val cert = Paths.get("/", "etc", "ssl", "certs", "ca-bundle.crt")
+    val trustCert = Paths.get("/", "etc", "ves", "trusted.crt")
+
+    beforeEachTest {
+        cut = ArgConfigurationProvider()
+    }
+
+    fun parse(vararg cmdLine: String): SimulatorConfiguration =
+            cut.parse(cmdLine).fold(
+                    {throw AssertionError("Parsing result should be present")},
+                    ::identity
+            )
+
+    describe("parsing arguments") {
+        lateinit var result: SimulatorConfiguration
+
+        given("all parameters are present in the long form") {
+
+            beforeEachTest {
+                result = parse("--ves-port", "6969",
+                        "--ves-host", vesHost,
+                        "--messages", messagesAmount.toString(),
+                        "--private-key-file", pk.toFile().absolutePath,
+                        "--cert-file", cert.toFile().absolutePath,
+                        "--trust-cert-file", trustCert.toFile().absolutePath)
+            }
+
+            it("should set proper port") {
+                assertThat(result.vesPort).isEqualTo(6969)
+            }
+
+
+            it("should set proper config url") {
+                assertThat(result.messagesAmount).isEqualTo(messagesAmount)
+            }
+
+            it("should set proper security configuration") {
+                assertThat(result.security).isEqualTo(
+                        SecurityConfiguration(pk, cert, trustCert)
+                )
+            }
+        }
+
+        given("some parameters are present in the short form") {
+
+            beforeEachTest {
+                result = parse("-h", "ves-hv", "--ves-port", "666", "-m", messagesAmount.toString())
+            }
+
+            it("should set proper port") {
+                assertThat(result.vesPort).isEqualTo(666)
+            }
+
+            it("should set proper messages amount") {
+                assertThat(result.messagesAmount).isEqualTo(messagesAmount)
+            }
+        }
+
+        given("all optional parameters are absent") {
+
+            beforeEachTest {
+                result = parse("-h", "ves-hv", "-p", "666")
+            }
+
+            it("should set default messages amount") {
+                assertThat(result.messagesAmount).isEqualTo(DefaultValues.MESSAGES_AMOUNT)
+            }
+
+            on("security config") {
+                val securityConfiguration = result.security
+
+                it("should set default trust cert file") {
+                    assertThat(securityConfiguration.trustedCert.toString()).isEqualTo(DefaultValues.TRUST_CERT_FILE)
+                }
+
+                it("should set default server cert file") {
+                    assertThat(securityConfiguration.cert.toString()).isEqualTo(DefaultValues.CERT_FILE)
+                }
+
+                it("should set default private key file") {
+                    assertThat(securityConfiguration.privateKey.toString()).isEqualTo(DefaultValues.PRIVATE_KEY_FILE)
+                }
+            }
+        }
+    }
+})
diff --git a/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/MessageFactoryTest.kt b/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/MessageFactoryTest.kt
new file mode 100644
index 00000000..6f8a95a4
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/MessageFactoryTest.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.simulators.xnf.impl
+
+import com.google.protobuf.ByteString
+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.simulators.xnf.config.MessageParameters
+import org.onap.ves.VesEventV5
+import org.onap.ves.VesEventV5.VesEvent.CommonEventHeader.Domain.HVRANMEAS
+import org.onap.ves.VesEventV5.VesEvent.CommonEventHeader.Priority.MEDIUM
+import reactor.test.test
+
+const val SAMPLE_START_EPOCH: Long = 120034455
+const val SAMPLE_LAST_EPOCH: Long = 120034455
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since June 2018
+ */
+object MessageFactoryTest : Spek({
+    describe("message factory") {
+
+        val factory = MessageGeneratorImpl.INSTANCE
+
+        given("only common header") {
+            it("should return infinite flux") {
+                val limit = 1000L
+                factory.createMessageFlux(getSampleMessageParameters()).take(limit).test()
+                        .expectNextCount(limit)
+                        .verifyComplete()
+            }
+        }
+        given("common header and messages amount") {
+            it("should return message flux of specified size") {
+                factory.createMessageFlux((getSampleMessageParameters(5))).test()
+                        .expectNextCount(5)
+                        .verifyComplete()
+            }
+        }
+    }
+})
+
+fun getSampleMessageParameters(amount: Long = -1): MessageParameters{
+    val commonHeader = VesEventV5.VesEvent.CommonEventHeader.newBuilder()
+            .setVersion("sample-version")
+            .setDomain(HVRANMEAS)
+            .setSequence(1)
+            .setPriority(MEDIUM)
+            .setEventId("sample-event-id")
+            .setEventName("sample-event-name")
+            .setEventType("sample-event-type")
+            .setStartEpochMicrosec(SAMPLE_START_EPOCH)
+            .setLastEpochMicrosec(SAMPLE_LAST_EPOCH)
+            .setNfNamingCode("sample-nf-naming-code")
+            .setNfcNamingCode("sample-nfc-naming-code")
+            .setReportingEntityId("sample-reporting-entity-id")
+            .setReportingEntityName(ByteString.copyFromUtf8("sample-reporting-entity-name"))
+            .setSourceId(ByteString.copyFromUtf8("sample-source-id"))
+            .setSourceName("sample-source-name")
+            .build()
+
+    return MessageParameters(commonHeader, amount)
+}
diff --git a/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/PayloadGeneratorTest.kt b/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/PayloadGeneratorTest.kt
new file mode 100644
index 00000000..73129a7f
--- /dev/null
+++ b/hv-collector-xnf-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/xnf/impl/PayloadGeneratorTest.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
+
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.dsl.on
+
+private const val DEFAULT_MEASUREMENTS_NUMBER = 2
+private const val DEFAULT_COUNTERS_NUMBER = 2
+
+private val uriRegex = """sample/uri(\d+)""".toRegex()
+
+object PayloadGeneratorTest : Spek({
+
+    given("payload factory object") {
+        val payloadGenerator = PayloadGenerator()
+
+        on("two generated payloads") {
+            val generatedPayload0 = payloadGenerator.generatePayload()
+            val generatedPayload1 = payloadGenerator.generatePayload()
+            it("URIs should have different names") {
+                val matchResult0 = uriRegex.find(generatedPayload0.getPmObject(0).uri)!!.value
+                val matchResult1 = uriRegex.find(generatedPayload1.getPmObject(0).uri)!!.value
+                assertThat(matchResult0 != matchResult1).isTrue()
+            }
+        }
+
+        on("call with default parameters") {
+            val generatedPayload = payloadGenerator.generatePayload()
+            it("should contain default numbers of measurements") {
+                assertThat(generatedPayload.getPmObject(0).hvRanMeasCount).isEqualTo(DEFAULT_MEASUREMENTS_NUMBER)
+            }
+            it("should contain default numbers of counters in measurement") {
+                assertThat(generatedPayload.getPmObject(0).getHvRanMeas(0).counterSubidCount).isEqualTo(DEFAULT_COUNTERS_NUMBER)
+            }
+        }
+
+        on("call with specified parameters") {
+            val numOfCountPerMeas: Long = 5
+            val numOfMeasPerObject: Int = 10
+            val generatedPayload = payloadGenerator.generatePayload(numOfCountPerMeas, numOfMeasPerObject)
+            it("should contain specified number of measurements") {
+                assertThat(generatedPayload.getPmObject(0).hvRanMeasCount).isEqualTo(numOfMeasPerObject)
+            }
+            it("measurement should contain specified number of counters") {
+                assertThat(generatedPayload.getPmObject(0).hvRanMeasList
+                        .filter { numOfCountPerMeas.toInt() == it.counterSubidCount }
+                        .size)
+                        .isEqualTo(numOfMeasPerObject)
+            }
+
+        }
+    }
+})