add dmaap client module

Change-Id: I443a6e8be3b8a6897fc73dc8f1511772ec1d8833
Issue-ID: DCAEGEN2-994
Signed-off-by: micdzied <michal.1.dziedzic@nokia.com>

9 files changed, 711 insertions, 0 deletions

diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapConsumerConfiguration.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapConsumerConfiguration.java
new file mode 100644
index 00000000..f7107f7c
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapConsumerConfiguration.java
@@ -0,0 +1,66 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.config;
+
+import org.immutables.gson.Gson;
+import org.immutables.value.Value;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 3/23/18
+ */
+@Component
+@Value.Immutable(prehash = true)
+@Value.Style(builder = "new")
+@Gson.TypeAdapters
+public abstract class DmaapConsumerConfiguration implements DmaapCustomConfig {
+
+    private static final long serialVersionUID = 1L;
+
+    public static DmaapConsumerConfiguration.Builder builder() {
+        return ImmutableDmaapConsumerConfiguration.builder();
+    }
+
+    @Value.Parameter
+    public abstract String consumerId();
+
+    @Value.Parameter
+    public abstract String consumerGroup();
+
+    @Value.Parameter
+    public abstract Integer timeoutMs();
+
+    @Value.Parameter
+    public abstract Integer messageLimit();
+
+    public interface Builder extends
+        DmaapCustomConfig.Builder<DmaapConsumerConfiguration, DmaapConsumerConfiguration.Builder> {
+
+        Builder consumerId(String consumerId);
+
+        Builder consumerGroup(String consumerGroup);
+
+        Builder timeoutMs(Integer timeoutMs);
+
+        Builder messageLimit(Integer messageLimit);
+    }
+
+}
\ No newline at end of file
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapCustomConfig.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapCustomConfig.java
new file mode 100644
index 00000000..efeaa85f
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapCustomConfig.java
@@ -0,0 +1,95 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.config;
+
+import java.io.Serializable;
+import org.immutables.value.Value;
+
+/**
+ * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 3/28/18
+ */
+public interface DmaapCustomConfig extends Serializable {
+
+    @Value.Parameter
+    String dmaapHostName();
+
+    @Value.Parameter
+    Integer dmaapPortNumber();
+
+    @Value.Parameter
+    String dmaapTopicName();
+
+    @Value.Parameter
+    String dmaapProtocol();
+
+    @Value.Parameter
+    String dmaapUserName();
+
+    @Value.Parameter
+    String dmaapUserPassword();
+
+    @Value.Parameter
+    String dmaapContentType();
+
+    @Value.Parameter
+    String trustStorePath();
+
+    @Value.Parameter
+    String trustStorePasswordPath();
+
+    @Value.Parameter
+    String keyStorePath();
+
+    @Value.Parameter
+    String keyStorePasswordPath();
+
+    @Value.Parameter
+    Boolean enableDmaapCertAuth();
+
+    interface Builder<T extends DmaapCustomConfig, B extends Builder<T, B>> {
+
+        B dmaapHostName(String dmaapHostName);
+
+        B dmaapPortNumber(Integer dmaapPortNumber);
+
+        B dmaapTopicName(String dmaapTopicName);
+
+        B dmaapProtocol(String dmaapProtocol);
+
+        B dmaapUserName(String dmaapUserName);
+
+        B dmaapUserPassword(String dmaapUserPassword);
+
+        B dmaapContentType(String dmaapContentType);
+
+        B trustStorePath(String trustStorePath);
+
+        B trustStorePasswordPath(String trustStorePasswordPath);
+
+        B keyStorePath(String keyStore);
+
+        B keyStorePasswordPath(String keyStorePass);
+
+        B enableDmaapCertAuth(Boolean enableDmaapCertAuth);
+
+        T build();
+    }
+}
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapPublisherConfiguration.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapPublisherConfiguration.java
new file mode 100644
index 00000000..3866f9b4
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/config/DmaapPublisherConfiguration.java
@@ -0,0 +1,44 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.config;
+
+import org.immutables.gson.Gson;
+import org.immutables.value.Value;
+
+/**
+ * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 3/23/18
+ */
+@Value.Immutable(prehash = true)
+@Value.Style(builder = "new")
+@Gson.TypeAdapters
+public abstract class DmaapPublisherConfiguration implements DmaapCustomConfig {
+
+    private static final long serialVersionUID = 1L;
+
+    public static DmaapPublisherConfiguration.Builder builder() {
+        return ImmutableDmaapPublisherConfiguration.builder();
+    }
+
+    interface Builder extends
+        DmaapCustomConfig.Builder<DmaapPublisherConfiguration, DmaapPublisherConfiguration.Builder> {
+
+    }
+}
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/ConsumerReactiveHttpClientFactory.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/ConsumerReactiveHttpClientFactory.java
new file mode 100644
index 00000000..7fd1021f
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/ConsumerReactiveHttpClientFactory.java
@@ -0,0 +1,43 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.service.consumer;
+
+import javax.net.ssl.SSLException;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapConsumerConfiguration;
+
+/**
+ * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/26/18
+ */
+public class ConsumerReactiveHttpClientFactory {
+
+    private final DMaaPReactiveWebClientFactory reactiveWebClientFactory;
+
+    public ConsumerReactiveHttpClientFactory(DMaaPReactiveWebClientFactory reactiveWebClientFactory) {
+        this.reactiveWebClientFactory = reactiveWebClientFactory;
+    }
+
+    public DMaaPConsumerReactiveHttpClient create(DmaapConsumerConfiguration consumerConfiguration)
+            throws SSLException {
+        return new DMaaPConsumerReactiveHttpClient(consumerConfiguration,
+                reactiveWebClientFactory.build(consumerConfiguration));
+    }
+
+}
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/DMaaPConsumerReactiveHttpClient.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/DMaaPConsumerReactiveHttpClient.java
new file mode 100644
index 00000000..f0172704
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/DMaaPConsumerReactiveHttpClient.java
@@ -0,0 +1,104 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.service.consumer;
+
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.REQUEST_ID;
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.X_INVOCATION_ID;
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.X_ONAP_REQUEST_ID;
+
+import java.net.URI;
+import java.util.UUID;
+import java.util.function.Consumer;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapConsumerConfiguration;
+import org.slf4j.MDC;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.reactive.function.client.WebClient;
+import org.springframework.web.util.DefaultUriBuilderFactory;
+import reactor.core.publisher.Mono;
+
+/**
+ * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/26/18
+ */
+public class DMaaPConsumerReactiveHttpClient {
+
+    private final String dmaapHostName;
+    private final String dmaapProtocol;
+    private final Integer dmaapPortNumber;
+    private final String dmaapTopicName;
+    private final String consumerGroup;
+    private final String consumerId;
+    private final String contentType;
+    private final WebClient webClient;
+
+    /**
+     * Constructor of DMaaPConsumerReactiveHttpClient.
+     *
+     * @param consumerConfiguration - DMaaP consumer configuration object
+     */
+    DMaaPConsumerReactiveHttpClient(DmaapConsumerConfiguration consumerConfiguration, WebClient webClient) {
+        this.dmaapHostName = consumerConfiguration.dmaapHostName();
+        this.dmaapProtocol = consumerConfiguration.dmaapProtocol();
+        this.dmaapPortNumber = consumerConfiguration.dmaapPortNumber();
+        this.dmaapTopicName = consumerConfiguration.dmaapTopicName();
+        this.consumerGroup = consumerConfiguration.consumerGroup();
+        this.consumerId = consumerConfiguration.consumerId();
+        this.contentType = consumerConfiguration.dmaapContentType();
+        this.webClient = webClient;
+    }
+
+    /**
+     * Function for calling DMaaP HTTP consumer - consuming messages from Kafka/DMaaP from topic.
+     *
+     * @return reactive response from DMaaP in string format
+     */
+    public Mono<String> getDMaaPConsumerResponse() {
+        return webClient
+            .get()
+            .uri(getUri())
+            .headers(getHeaders())
+            .retrieve()
+            .onStatus(HttpStatus::is4xxClientError, clientResponse ->
+                Mono.error(new RuntimeException("DmaaPConsumer HTTP " + clientResponse.statusCode()))
+            )
+            .onStatus(HttpStatus::is5xxServerError, clientResponse ->
+                Mono.error(new RuntimeException("DmaaPConsumer HTTP " + clientResponse.statusCode())))
+            .bodyToMono(String.class);
+    }
+
+    private Consumer<HttpHeaders> getHeaders() {
+        return httpHeaders -> {
+            httpHeaders.set(X_ONAP_REQUEST_ID, MDC.get(REQUEST_ID));
+            httpHeaders.set(X_INVOCATION_ID, UUID.randomUUID().toString());
+            httpHeaders.set(HttpHeaders.CONTENT_TYPE, contentType);
+        };
+    }
+
+    private String createRequestPath() {
+        return dmaapTopicName + "/" + consumerGroup + "/" + consumerId;
+    }
+
+
+    URI getUri() {
+        return new DefaultUriBuilderFactory().builder().scheme(dmaapProtocol).host(dmaapHostName).port(dmaapPortNumber)
+            .path(createRequestPath()).build();
+    }
+}
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/DMaaPReactiveWebClientFactory.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/DMaaPReactiveWebClientFactory.java
new file mode 100644
index 00000000..b1f2ab02
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/consumer/DMaaPReactiveWebClientFactory.java
@@ -0,0 +1,103 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.service.consumer;
+
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.RESPONSE_CODE;
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.SERVICE_NAME;
+
+import io.netty.handler.ssl.SslContext;
+import javax.net.ssl.SSLException;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapConsumerConfiguration;
+import org.onap.dcaegen2.services.sdk.rest.services.ssl.SslFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import org.springframework.http.client.reactive.ClientHttpConnector;
+import org.springframework.http.client.reactive.ReactorClientHttpConnector;
+import org.springframework.web.reactive.function.client.ExchangeFilterFunction;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Mono;
+import reactor.netty.http.client.HttpClient;
+
+/**
+ * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 7/4/18
+ */
+public class DMaaPReactiveWebClientFactory {
+
+    private final Logger logger = LoggerFactory.getLogger(this.getClass());
+
+    private final SslFactory sslFactory;
+
+    public DMaaPReactiveWebClientFactory() {
+        this(new SslFactory());
+    }
+
+    DMaaPReactiveWebClientFactory(SslFactory sslFactory) {
+        this.sslFactory = sslFactory;
+    }
+
+    /**
+     * Construct Reactive WebClient with appropriate settings.
+     *
+     * @return WebClient
+     */
+    public WebClient build(DmaapConsumerConfiguration consumerConfiguration) throws SSLException {
+        SslContext sslContext = createSslContext(consumerConfiguration);
+        ClientHttpConnector reactorClientHttpConnector = new ReactorClientHttpConnector(
+                HttpClient.create().secure(sslContextSpec -> sslContextSpec.sslContext(sslContext)));
+        return WebClient.builder()
+                .clientConnector(reactorClientHttpConnector)
+                .filter(logRequest())
+                .filter(logResponse())
+                .build();
+    }
+
+    private SslContext createSslContext(DmaapConsumerConfiguration consumerConfiguration) throws SSLException {
+        if (consumerConfiguration.enableDmaapCertAuth()) {
+            return sslFactory.createSecureContext(
+                    consumerConfiguration.keyStorePath(), consumerConfiguration.keyStorePasswordPath(),
+                    consumerConfiguration.trustStorePath(), consumerConfiguration.trustStorePasswordPath()
+            );
+        }
+        return sslFactory.createInsecureContext();
+    }
+
+    private ExchangeFilterFunction logResponse() {
+        return ExchangeFilterFunction.ofResponseProcessor(clientResponse -> {
+            MDC.put(RESPONSE_CODE, String.valueOf(clientResponse.statusCode()));
+            logger.info("Response Status {}", clientResponse.statusCode());
+            MDC.remove(RESPONSE_CODE);
+            return Mono.just(clientResponse);
+        });
+    }
+
+    private ExchangeFilterFunction logRequest() {
+        return ExchangeFilterFunction.ofRequestProcessor(clientRequest -> {
+            MDC.put(SERVICE_NAME, String.valueOf(clientRequest.url()));
+            logger.info("Request: {} {}", clientRequest.method(), clientRequest.url());
+            clientRequest.headers()
+                .forEach((name, values) -> values.forEach(value -> logger.info("{}={}", name, value)));
+            MDC.remove(SERVICE_NAME);
+            return Mono.just(clientRequest);
+        });
+    }
+
+}
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/DMaaPPublisherReactiveHttpClient.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/DMaaPPublisherReactiveHttpClient.java
new file mode 100644
index 00000000..43a0b4cc
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/DMaaPPublisherReactiveHttpClient.java
@@ -0,0 +1,102 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.service.producer;
+
+import static org.onap.dcaegen2.services.sdk.rest.services.model.CommonFunctions.createJsonBody;
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.REQUEST_ID;
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.X_INVOCATION_ID;
+import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.X_ONAP_REQUEST_ID;
+
+import java.net.URI;
+import java.util.UUID;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
+import org.onap.dcaegen2.services.sdk.rest.services.model.ConsumerDmaapModel;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.DefaultUriBuilderFactory;
+import reactor.core.publisher.Mono;
+
+
+/**
+ * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 7/4/18
+ */
+public class DMaaPPublisherReactiveHttpClient {
+
+    private final Logger logger = LoggerFactory.getLogger(DMaaPPublisherReactiveHttpClient.class);
+    private final String dmaapHostName;
+    private final Integer dmaapPortNumber;
+    private final String dmaapProtocol;
+    private final String dmaapTopicName;
+    private final String dmaapContentType;
+    private final Mono<RestTemplate> restTemplateMono;
+
+    /**
+     * Constructor DMaaPPublisherReactiveHttpClient.
+     *
+     * @param dmaapPublisherConfiguration - DMaaP producer configuration object
+     */
+    DMaaPPublisherReactiveHttpClient(DmaapPublisherConfiguration dmaapPublisherConfiguration,
+                                     Mono<RestTemplate> restTemplateMono) {
+        this.dmaapHostName = dmaapPublisherConfiguration.dmaapHostName();
+        this.dmaapProtocol = dmaapPublisherConfiguration.dmaapProtocol();
+        this.dmaapPortNumber = dmaapPublisherConfiguration.dmaapPortNumber();
+        this.dmaapTopicName = dmaapPublisherConfiguration.dmaapTopicName();
+        this.dmaapContentType = dmaapPublisherConfiguration.dmaapContentType();
+        this.restTemplateMono = restTemplateMono;
+    }
+
+    /**
+     * Function for calling DMaaP HTTP producer - post request to DMaaP.
+     *
+     * @param consumerDmaapModelMono - object which will be sent to DMaaP
+     * @return status code of operation
+     */
+
+    public Mono<ResponseEntity<String>> getDMaaPProducerResponse(ConsumerDmaapModel consumerDmaapModelMono) {
+        return Mono.defer(() -> {
+            HttpEntity<String> request = new HttpEntity<>(createJsonBody(consumerDmaapModelMono), getAllHeaders());
+            logger.info("Request: {} {}", getUri(), request);
+            return restTemplateMono.map(
+                restTemplate -> restTemplate.exchange(getUri(), HttpMethod.POST, request, String.class));
+        });
+    }
+
+    private HttpHeaders getAllHeaders() {
+        HttpHeaders headers = new HttpHeaders();
+        headers.set(X_ONAP_REQUEST_ID, MDC.get(REQUEST_ID));
+        headers.set(X_INVOCATION_ID, UUID.randomUUID().toString());
+        headers.set(HttpHeaders.CONTENT_TYPE, dmaapContentType);
+        return headers;
+
+    }
+
+    URI getUri() {
+        return new DefaultUriBuilderFactory().builder().scheme(dmaapProtocol).host(dmaapHostName).port(dmaapPortNumber)
+                .path(dmaapTopicName).build();
+    }
+
+}
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/DmaaPRestTemplateFactory.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/DmaaPRestTemplateFactory.java
new file mode 100644
index 00000000..fe2b2c10
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/DmaaPRestTemplateFactory.java
@@ -0,0 +1,115 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.service.producer;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.security.GeneralSecurityException;
+import java.security.KeyStore;
+import javax.net.ssl.SSLContext;
+import org.apache.http.client.HttpClient;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.ssl.SSLContextBuilder;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
+import org.springframework.web.client.RestTemplate;
+import reactor.core.publisher.Mono;
+
+public class DmaaPRestTemplateFactory {
+
+    /**
+     * Function for creating RestTemplate object.
+     *
+     * @param publisherConfiguration - DMaaP publisher configuration object
+     * @return RestTemplate with correct ssl configuration
+     */
+    public Mono<RestTemplate> build(DmaapPublisherConfiguration publisherConfiguration) {
+        if (publisherConfiguration.enableDmaapCertAuth()) {
+            return createRestTemplateWithSslSetup(publisherConfiguration);
+        }
+
+        return Mono.just(new RestTemplate());
+    }
+
+    private Mono<RestTemplate> createRestTemplateWithSslSetup(DmaapPublisherConfiguration publisherConfiguration) {
+        try {
+            RestTemplateBuilder builder = new RestTemplateBuilder();
+
+            SSLContext sslContext = createSslContext(publisherConfiguration,
+                    loadPasswordFromFile(publisherConfiguration.keyStorePasswordPath()),
+                    loadPasswordFromFile(publisherConfiguration.trustStorePasswordPath()));
+
+            return Mono.just(builder
+                    .requestFactory(() -> createRequestFactory(sslContext)).build());
+
+        } catch (GeneralSecurityException | IOException e) {
+            return Mono.error(e);
+        }
+    }
+
+    private SSLContext createSslContext(DmaapPublisherConfiguration publisherConfiguration,
+                                        String keyStorePassword, String trustStorePassword)
+            throws IOException, GeneralSecurityException {
+        return new SSLContextBuilder()
+                        .loadKeyMaterial(
+                                keyStore(publisherConfiguration.keyStorePath(), keyStorePassword),
+                                keyStorePassword.toCharArray())
+                        .loadTrustMaterial(
+                                getFile(publisherConfiguration.trustStorePath()), trustStorePassword.toCharArray())
+                        .build();
+    }
+
+    private HttpComponentsClientHttpRequestFactory createRequestFactory(SSLContext sslContext) {
+        SSLConnectionSocketFactory socketFactory =
+                new SSLConnectionSocketFactory(sslContext);
+        HttpClient httpClient = HttpClients.custom()
+                .setSSLSocketFactory(socketFactory).build();
+
+        return new HttpComponentsClientHttpRequestFactory(httpClient);
+    }
+
+    private KeyStore keyStore(String keyStoreFile, String keyStorePassword)
+            throws GeneralSecurityException, IOException {
+        KeyStore ks = KeyStore.getInstance("jks");
+        ks.load(getResource(keyStoreFile), keyStorePassword.toCharArray());
+        return ks;
+    }
+
+    private File getFile(String fileName) {
+        return new File(fileName);
+    }
+
+    private InputStream getResource(String fileName) throws FileNotFoundException {
+        return new FileInputStream(fileName);
+    }
+
+    private String loadPasswordFromFile(String path) throws IOException {
+        return new String(Files.readAllBytes(Paths.get(path)));
+    }
+
+}
diff --git a/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/PublisherReactiveHttpClientFactory.java b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/PublisherReactiveHttpClientFactory.java
new file mode 100644
index 00000000..e5f3e19e
--- /dev/null
+++ b/rest-services/dmaap-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/service/producer/PublisherReactiveHttpClientFactory.java
@@ -0,0 +1,39 @@
+/*
+ * ============LICENSE_START=======================================================
+ * DCAEGEN2-SERVICES-SDK
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.dcaegen2.services.sdk.rest.services.dmaap.client.service.producer;
+
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
+
+
+public class PublisherReactiveHttpClientFactory {
+
+    private final DmaaPRestTemplateFactory restTemplateFactory;
+
+    public PublisherReactiveHttpClientFactory(DmaaPRestTemplateFactory restTemplateFactory) {
+        this.restTemplateFactory = restTemplateFactory;
+    }
+
+    public DMaaPPublisherReactiveHttpClient create(DmaapPublisherConfiguration publisherConfiguration) {
+        return new DMaaPPublisherReactiveHttpClient(publisherConfiguration,
+                restTemplateFactory.build(publisherConfiguration));
+    }
+
+}