add message router publisher

initial api and implementation of message router publisher

Change-Id: Ic69d013bae8ab8c842e6ecd2eef41e10649d1009
Issue-ID: CCSDK-1163
Signed-off-by: Smokowski, Kevin (ks6305) <kevin.smokowski@att.com>

18 files changed, 751 insertions, 0 deletions

diff --git a/message-router/README.md b/message-router/README.md
new file mode 100755
index 00000000..32848252
--- /dev/null
+++ b/message-router/README.md
@@ -0,0 +1,7 @@
+# CCSDK Message Router Extension

+

+This maven module builds re-usable code that interacts with message router

+

+## High level modules

+- **publisher** used for sending messages to a dmaap message router topic

+- **consumer** not yet created, this will be used for pulling messages from a dmaap message router topic

diff --git a/message-router/pom.xml b/message-router/pom.xml
new file mode 100755
index 00000000..0d1328d3
--- /dev/null
+++ b/message-router/pom.xml
@@ -0,0 +1,32 @@
+<?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>
+
+    <parent>
+        <groupId>org.onap.ccsdk.parent</groupId>
+        <artifactId>binding-parent</artifactId>
+        <version>1.2.1-SNAPSHOT</version>
+        <relativePath/>
+    </parent>
+
+	<groupId>org.onap.ccsdk.messagerouter</groupId>
+	<artifactId>parent</artifactId>
+	<version>0.4.1-SNAPSHOT</version>
+	<packaging>pom</packaging>
+
+	<modules>
+		<module>publisher</module>
+	</modules>
+
+	<build>
+		<pluginManagement>
+			<plugins>
+				<plugin>
+					<groupId>org.apache.felix</groupId>
+					<artifactId>maven-bundle-plugin</artifactId>
+					<extensions>true</extensions>
+				</plugin>
+			</plugins>
+		</pluginManagement>
+	</build>
+</project>
diff --git a/message-router/publisher/README.md b/message-router/publisher/README.md
new file mode 100755
index 00000000..58c1bf47
--- /dev/null
+++ b/message-router/publisher/README.md
@@ -0,0 +1,8 @@
+# Publisher

+

+## Modules

+- api - exports the publisher interface for clients and providers to import

+- features - used for managing the feature repository for publisher

+- installer - provides a simple install script 

+- provider - provides an implementation of the publisher api, this implementation assumes the controller has a single identity for publishing to DMAAP message router

+- sample.client - a dummy client that posts a simple message to a configured topic during its initialization

diff --git a/message-router/publisher/api/pom.xml b/message-router/publisher/api/pom.xml
new file mode 100755
index 00000000..ef03f7fd
--- /dev/null
+++ b/message-router/publisher/api/pom.xml
@@ -0,0 +1,27 @@
+<?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>
+
+	<parent>
+	<groupId>org.onap.ccsdk.messagerouter</groupId>
+	<artifactId>publisher.aggregate</artifactId>
+	<version>0.4.1-SNAPSHOT</version>
+	</parent>
+
+	<artifactId>publisher.api</artifactId>
+	<packaging>bundle</packaging>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.felix</groupId>
+				<artifactId>maven-bundle-plugin</artifactId>
+				<configuration>
+					<instructions>
+						<Export-Package>org.onap.ccsdk.messagerouter.publisher.api</Export-Package>
+					</instructions>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>
diff --git a/message-router/publisher/api/src/main/java/org/onap/ccsdk/messagerouter/publisher/api/PublisherApi.java b/message-router/publisher/api/src/main/java/org/onap/ccsdk/messagerouter/publisher/api/PublisherApi.java
new file mode 100755
index 00000000..6d4bddcd
--- /dev/null
+++ b/message-router/publisher/api/src/main/java/org/onap/ccsdk/messagerouter/publisher/api/PublisherApi.java
@@ -0,0 +1,5 @@
+package org.onap.ccsdk.messagerouter.publisher.api;

+

+public interface PublisherApi {

+	public Boolean publish(String topic, String body);

+}

diff --git a/message-router/publisher/features/pom.xml b/message-router/publisher/features/pom.xml
new file mode 100755
index 00000000..33a19b8c
--- /dev/null
+++ b/message-router/publisher/features/pom.xml
@@ -0,0 +1,58 @@
+<?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>
+
+	<parent>
+		<groupId>org.onap.ccsdk.messagerouter</groupId>
+		<artifactId>publisher.aggregate</artifactId>
+		<version>0.4.1-SNAPSHOT</version>
+	</parent>
+
+	<artifactId>publisher.features</artifactId>
+	<packaging>pom</packaging>
+
+	<build>
+		<resources>
+			<resource>
+				<directory>src/main/feature</directory>
+				<filtering>true</filtering>
+				<targetPath>${project.build.directory}/feature</targetPath>
+			</resource>
+		</resources>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-resources-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>resources</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>build-helper-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>attach-artifacts</id>
+						<phase>package</phase>
+						<goals>
+							<goal>attach-artifact</goal>
+						</goals>
+						<configuration>
+							<artifacts>
+								<artifact>
+									<file>target/feature/feature.xml</file>
+									<type>xml</type>
+							        <classifier>features</classifier>						
+								</artifact>
+							</artifacts>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+</project>
diff --git a/message-router/publisher/features/src/main/feature/feature.xml b/message-router/publisher/features/src/main/feature/feature.xml
new file mode 100755
index 00000000..f5e9bb6e
--- /dev/null
+++ b/message-router/publisher/features/src/main/feature/feature.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<features name="messagerouter-publisher-${project.version}" xmlns="http://karaf.apache.org/xmlns/features/v1.2.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://karaf.apache.org/xmlns/features/v1.2.0 http://karaf.apache.org/xmlns/features/v1.2.0">     
+    
+    <feature name='messagerouter-publisher' description="exposes message router publisher service" version='${project.version}'>
+        <bundle>mvn:org.onap.ccsdk.messagerouter/publisher.api/${project.version}</bundle>
+        <bundle>mvn:org.onap.ccsdk.messagerouter/publisher.provider/${project.version}</bundle>
+    </feature>
+
+    <feature name='sample-client' description="initializes a dummy client" version='${project.version}'>
+        <bundle>mvn:org.onap.ccsdk.messagerouter/sample.client/${project.version}</bundle>
+    </feature>
+
+</features>
diff --git a/message-router/publisher/installer/pom.xml b/message-router/publisher/installer/pom.xml
new file mode 100644
index 00000000..49113ae1
--- /dev/null
+++ b/message-router/publisher/installer/pom.xml
@@ -0,0 +1,140 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+	<parent>
+	<groupId>org.onap.ccsdk.messagerouter</groupId>
+	<artifactId>publisher.aggregate</artifactId>
+	<version>0.4.1-SNAPSHOT</version>
+	</parent>
+
+    <groupId>org.onap.ccsdk.messagerouter</groupId>
+    <artifactId>publisher.installer</artifactId>
+    <version>0.4.1-SNAPSHOT</version>
+    <packaging>pom</packaging>
+
+	<properties>
+		<application.name>messagerouter-publisher</application.name>
+		<features.boot>messagerouter-publisher</features.boot>
+		<features.repositories>mvn:${project.groupId}/publisher.features/${project.version}/xml/features</features.repositories>
+		<include.transitive.dependencies>false</include.transitive.dependencies>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.onap.ccsdk.messagerouter</groupId>
+			<artifactId>publisher.features</artifactId>
+			<version>${project.version}</version>
+			<type>xml</type>
+			<classifier>features</classifier>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.messagerouter</groupId>
+			<artifactId>publisher.api</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.messagerouter</groupId>
+			<artifactId>publisher.provider</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.messagerouter</groupId>
+			<artifactId>sample.client</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+	</dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>2.6</version>
+                <executions>
+                    <execution>
+                        <id>maven-repo-zip</id>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                        <phase>package</phase>
+                        <configuration>
+                            <attach>true</attach>
+                            <finalName>stage/${application.name}-${project.version}</finalName>
+                            <descriptors>
+                                <descriptor>src/assembly/assemble_mvnrepo_zip.xml</descriptor>
+                            </descriptors>
+                            <appendAssemblyId>true</appendAssemblyId>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>installer-zip</id>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                        <phase>package</phase>
+                        <configuration>
+                            <attach>true</attach>
+                            <finalName>${application.name}-${project.version}-installer</finalName>
+                            <descriptors>
+                                <descriptor>src/assembly/assemble_installer_zip.xml</descriptor>
+                            </descriptors>
+                            <appendAssemblyId>false</appendAssemblyId>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>copy-dependencies</id>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <phase>prepare-package</phase>
+                        <configuration>
+                            <transitive>false</transitive>
+                            <outputDirectory>${project.build.directory}/assembly/system</outputDirectory>
+                            <overWriteReleases>false</overWriteReleases>
+                            <overWriteSnapshots>true</overWriteSnapshots>
+                            <overWriteIfNewer>true</overWriteIfNewer>
+                            <useRepositoryLayout>true</useRepositoryLayout>
+                            <addParentPoms>false</addParentPoms>
+                            <copyPom>false</copyPom>
+                            <includeGroupIds>org.onap.ccsdk.messagerouter</includeGroupIds>
+                            <scope>provided</scope>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-resources-plugin</artifactId>
+                <version>2.6</version>
+                <executions>
+                    <execution>
+                        <id>copy-version</id>
+                        <goals>
+                            <goal>copy-resources</goal>
+                        </goals><!-- here the phase you need -->
+                        <phase>validate</phase>
+                        <configuration>
+                            <outputDirectory>${basedir}/target/stage</outputDirectory>
+                            <resources>
+                                <resource>
+                                    <directory>src/main/resources/scripts</directory>
+                                    <includes>
+                                        <include>install-feature.sh</include>
+                                    </includes>
+                                    <filtering>true</filtering>
+                                </resource>
+                            </resources>
+                        </configuration>
+                    </execution>
+
+                </executions>
+            </plugin>
+
+        </plugins>
+    </build>
+</project>
\ No newline at end of file
diff --git a/message-router/publisher/installer/src/assembly/assemble_installer_zip.xml b/message-router/publisher/installer/src/assembly/assemble_installer_zip.xml
new file mode 100644
index 00000000..c6169a87
--- /dev/null
+++ b/message-router/publisher/installer/src/assembly/assemble_installer_zip.xml
@@ -0,0 +1,59 @@
+<!--
+  ============LICENSE_START=======================================================
+  openECOMP : SDN-C
+  ================================================================================
+  Copyright (C) 2017 AT&T 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=========================================================
+  -->
+
+<!-- Defines how we build the .zip file which is our distribution. -->
+
+<assembly
+    xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+    <id>installer_zip</id>
+    <formats>
+        <format>zip</format>
+    </formats>
+
+    <!--  we want "system" and related files right at the root level
+          as this file is suppose to be unzip on top of a karaf
+          distro. -->
+    <includeBaseDirectory>false</includeBaseDirectory>
+
+    <fileSets>
+        <fileSet>
+            <directory>target/stage/</directory>
+            <outputDirectory>${application.name}</outputDirectory>
+            <fileMode>755</fileMode>
+            <includes>
+                <include>*.sh</include>
+            </includes>
+        </fileSet>
+        <fileSet>
+            <directory>target/stage/</directory>
+            <outputDirectory>${application.name}</outputDirectory>
+            <fileMode>644</fileMode>
+            <excludes>
+                <exclude>*.sh</exclude>
+            </excludes>
+        </fileSet>
+    </fileSets>
+
+
+
+</assembly>
\ No newline at end of file
diff --git a/message-router/publisher/installer/src/assembly/assemble_mvnrepo_zip.xml b/message-router/publisher/installer/src/assembly/assemble_mvnrepo_zip.xml
new file mode 100644
index 00000000..377b5b15
--- /dev/null
+++ b/message-router/publisher/installer/src/assembly/assemble_mvnrepo_zip.xml
@@ -0,0 +1,49 @@
+<!--
+  ============LICENSE_START=======================================================
+  openECOMP : SDN-C
+  ================================================================================
+  Copyright (C) 2017 AT&T 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=========================================================
+  -->
+
+<!-- Defines how we build the .zip file which is our distribution. -->
+
+<assembly
+    xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+    <id>repo</id>
+    <formats>
+        <format>zip</format>
+    </formats>
+
+    <!--  we want "system" and related files right at the root level
+          as this file is suppose to be unzip on top of a karaf
+          distro. -->
+    <includeBaseDirectory>false</includeBaseDirectory>
+
+    <fileSets>
+        <fileSet>
+            <directory>target/assembly/</directory>
+            <outputDirectory>.</outputDirectory>
+            <excludes>
+            </excludes>
+        </fileSet>
+    </fileSets>
+
+
+
+</assembly>
\ No newline at end of file
diff --git a/message-router/publisher/installer/src/main/resources/scripts/install-feature.sh b/message-router/publisher/installer/src/main/resources/scripts/install-feature.sh
new file mode 100644
index 00000000..15dc0c27
--- /dev/null
+++ b/message-router/publisher/installer/src/main/resources/scripts/install-feature.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+###
+# ============LICENSE_START=======================================================
+# openECOMP : SDN-C
+# ================================================================================
+# Copyright (C) 2017 AT&T 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=========================================================
+###
+
+ODL_HOME=${ODL_HOME:-/opt/opendaylight/current}
+ODL_KARAF_CLIENT=${ODL_KARAF_CLIENT:-${ODL_HOME}/bin/client}
+INSTALLERDIR=$(dirname $0)
+
+REPOZIP=${INSTALLERDIR}/${features.boot}-${project.version}.zip
+
+if [ -f ${REPOZIP} ]
+then
+    unzip -d ${ODL_HOME} ${REPOZIP}
+else
+    echo "ERROR : repo zip ($REPOZIP) not found"
+    exit 1
+fi
+
+${ODL_KARAF_CLIENT} feature:repo-add ${features.repositories}
+${ODL_KARAF_CLIENT} feature:install ${features.boot}
\ No newline at end of file
diff --git a/message-router/publisher/pom.xml b/message-router/publisher/pom.xml
new file mode 100755
index 00000000..eded68fd
--- /dev/null
+++ b/message-router/publisher/pom.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.onap.ccsdk.messagerouter</groupId>
+		<artifactId>parent</artifactId>
+		<version>0.4.1-SNAPSHOT</version>
+	</parent>
+
+	<artifactId>publisher.aggregate</artifactId>
+	<packaging>pom</packaging>
+
+	<modules>
+		<module>api</module>
+		<module>features</module>
+		<module>provider</module>
+		<module>sample.client</module>
+		<module>installer</module>
+	</modules>
+</project>
diff --git a/message-router/publisher/provider/pom.xml b/message-router/publisher/provider/pom.xml
new file mode 100755
index 00000000..ca51aea4
--- /dev/null
+++ b/message-router/publisher/provider/pom.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.onap.ccsdk.messagerouter</groupId>
+		<artifactId>publisher.aggregate</artifactId>
+		<version>0.4.1-SNAPSHOT</version>
+	</parent>
+
+	<artifactId>publisher.provider</artifactId>
+	<packaging>bundle</packaging>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.onap.ccsdk.messagerouter</groupId>
+			<artifactId>publisher.api</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.felix</groupId>
+				<artifactId>maven-bundle-plugin</artifactId>
+				<configuration>
+					<instructions>
+						<Private-Package>org.onap.ccsdk.messagerouter.publisher.provider.impl</Private-Package>
+					</instructions>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>
diff --git a/message-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java b/message-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java
new file mode 100755
index 00000000..3e8ab333
--- /dev/null
+++ b/message-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java
@@ -0,0 +1,149 @@
+package org.onap.ccsdk.messagerouter.publisher.provider.impl;

+

+import java.io.BufferedReader;

+import java.io.DataOutputStream;

+import java.io.IOException;

+import java.io.InputStream;

+import java.io.InputStreamReader;

+import java.net.HttpURLConnection;

+import java.net.SocketException;

+import java.net.URL;

+import java.util.Base64;

+

+import org.onap.ccsdk.messagerouter.publisher.api.PublisherApi;

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+public class PublisherApiImpl implements PublisherApi {

+	private static final Logger logger = LoggerFactory.getLogger(PublisherApiImpl.class);

+	protected final Integer DEFAULT_CONNECT_TIMEOUT = 30000; // will be treated as 30 seconds

+	protected final Integer DEFAULT_READ_TIMEOUT = 180000; // will be treated as 3 minutes

+	private String authorizationString;

+	protected Integer connectTimeout;

+	protected Integer readTimeout;

+	protected String baseUrl;

+	protected String username;

+	protected String[] hosts;

+	private String password;

+

+	public void setUsername(String username) {

+		this.username = username;

+		buildAuthorizationString();

+	}

+

+	public void setPassword(String password) {

+		this.password = password;

+		buildAuthorizationString();

+	}

+

+	public void setHost(String hostString) {

+		// a comma separated list of hosts can be passed in or a single host may be used

+		if (!hostString.contains(",")) {

+			this.hosts = new String[] { hostString };

+		} else {

+			this.hosts = hostString.split(",");

+		}

+	}

+

+	public PublisherApiImpl() {

+		connectTimeout = DEFAULT_CONNECT_TIMEOUT;

+		readTimeout = DEFAULT_READ_TIMEOUT;

+	}

+

+	public void init() {

+		buildAuthorizationString();

+	}

+

+	private String buildUrlString(Integer hostIndex, String topic) {

+		return hosts[hostIndex] + "/events/" + topic;

+	}

+

+	protected void configureHttpURLConnection(HttpURLConnection httpUrlConnection) {

+		httpUrlConnection.setRequestProperty("Content-Type", "application/json");

+	}

+

+	public Boolean publish(String topic, String body) {

+		for (int hostIndex = 0; hostIndex < hosts.length; hostIndex++) {

+			HttpURLConnection httpUrlConnection = null;

+			URL url = null;

+			try {

+				url = new URL(buildUrlString(hostIndex, topic));

+				logger.info("Publishing body to topic {} using the url {}", topic, url);

+				logger.info("Message to publish is\n{}", body);

+				httpUrlConnection = buildHttpURLConnection(url);

+				httpUrlConnection.setDoInput(true);

+				httpUrlConnection.setDoOutput(true);

+				httpUrlConnection.setUseCaches(false);

+				httpUrlConnection.setRequestMethod("POST");

+

+				// Write message

+				httpUrlConnection.setRequestProperty("Content-Length", Integer.toString(body.length()));

+				DataOutputStream outStr = new DataOutputStream(httpUrlConnection.getOutputStream());

+				outStr.write(body.getBytes());

+				outStr.close();

+

+				int status = httpUrlConnection.getResponseCode();

+				logger.info("Publishing body for topic {} using  url {} returned status {}.", topic, url, status);

+				if (status < 300) {

+					String responseFromDMaaP = readFromStream(httpUrlConnection.getInputStream());

+					logger.info("Message router response is\n{}", responseFromDMaaP);

+					return true;

+				} else {

+					if (httpUrlConnection.getErrorStream() != null) {

+						String responseFromDMaaP = readFromStream(httpUrlConnection.getErrorStream());

+						logger.warn("Publishing body for topic {} using  url {} failed." + " Error message is\n{}",

+								topic, url, responseFromDMaaP);

+					}

+					return false;

+				}

+

+			} catch (SocketException socketException) {

+				logger.error("SocketException was thrown during publishing message to DMaaP on url {}.", url,

+						socketException);

+				if (hostIndex < hosts.length) {

+					logger.info("Message sent to {} failed with a SocketException, but will be tried on {}",

+							hosts[hostIndex], hosts[hostIndex + 1]);

+				}

+			} catch (Exception e) {

+				logger.warn("Exception was thrown during publishing message to DMaaP on url {}.", url, e);

+				return false;

+			} finally {

+				if (httpUrlConnection != null) {

+					httpUrlConnection.disconnect();

+				}

+			}

+		}

+		return false;

+	}

+

+	private void buildAuthorizationString() {

+		String basicAuthString = username + ":" + password;

+		basicAuthString = Base64.getEncoder().encodeToString(basicAuthString.getBytes());

+		this.authorizationString = "Basic " + basicAuthString;

+	}

+

+	protected HttpURLConnection buildHttpURLConnection(URL url) throws IOException {

+		HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection();

+		if (authorizationString != null) {

+			httpUrlConnection.setRequestProperty("Authorization", authorizationString);

+		}

+		httpUrlConnection.setRequestProperty("Accept", "application/json");

+		httpUrlConnection.setUseCaches(false);

+		httpUrlConnection.setConnectTimeout(connectTimeout);

+		httpUrlConnection.setReadTimeout(readTimeout);

+		configureHttpURLConnection(httpUrlConnection);

+		return httpUrlConnection;

+	}

+

+	protected String readFromStream(InputStream stream) throws IOException {

+		BufferedReader br = new BufferedReader(new InputStreamReader(stream));

+		StringBuilder sb = new StringBuilder();

+		String line;

+		while ((line = br.readLine()) != null) {

+			sb.append(line);

+		}

+		br.close();

+		return sb.toString();

+	}

+

+}
\ No newline at end of file
diff --git a/message-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml b/message-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml
new file mode 100755
index 00000000..da25fd23
--- /dev/null
+++ b/message-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
+	xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.2.0">
+
+	<bean id="publisher"
+		class="org.onap.ccsdk.messagerouter.publisher.provider.impl.PublisherApiImpl">
+		<cm:managed-properties
+			persistent-id="org.onap.ccsdk.messagerouter.publisher.provider"
+			update-strategy="container-managed" />
+	</bean>
+
+	<service ref="publisher" interface="org.onap.ccsdk.messagerouter.publisher.api.PublisherApi" />
+
+</blueprint>
\ No newline at end of file
diff --git a/message-router/publisher/sample.client/pom.xml b/message-router/publisher/sample.client/pom.xml
new file mode 100755
index 00000000..a264bff1
--- /dev/null
+++ b/message-router/publisher/sample.client/pom.xml
@@ -0,0 +1,39 @@
+<?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>
+
+	<parent>
+		<groupId>org.onap.ccsdk.messagerouter</groupId>
+		<artifactId>publisher.aggregate</artifactId>
+		<version>0.4.1-SNAPSHOT</version>
+	</parent>
+
+	<artifactId>sample.client</artifactId>
+	<packaging>bundle</packaging>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.onap.ccsdk.messagerouter</groupId>
+			<artifactId>publisher.api</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.felix</groupId>
+				<artifactId>maven-bundle-plugin</artifactId>
+				<configuration>
+					<instructions>
+						<Private-Package>org.onap.ccsdk.messagerouter.publisher.client.impl</Private-Package>
+					</instructions>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>
diff --git a/message-router/publisher/sample.client/src/main/java/org/onap/ccsdk/messagerouter/publisher/client/impl/ClientImpl.java b/message-router/publisher/sample.client/src/main/java/org/onap/ccsdk/messagerouter/publisher/client/impl/ClientImpl.java
new file mode 100755
index 00000000..dbf49fe9
--- /dev/null
+++ b/message-router/publisher/sample.client/src/main/java/org/onap/ccsdk/messagerouter/publisher/client/impl/ClientImpl.java
@@ -0,0 +1,33 @@
+package org.onap.ccsdk.messagerouter.publisher.client.impl;

+

+import org.onap.ccsdk.messagerouter.publisher.api.PublisherApi;

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+public class ClientImpl {

+	private static final Logger logger = LoggerFactory.getLogger(ClientImpl.class);

+	private String topic;

+	private PublisherApi publisher;

+

+	public void setPublisher(PublisherApi publisherApi) {

+		this.publisher = publisherApi;

+	}

+

+	public void setTopic(String topic) {

+		this.topic = topic;

+	}

+

+	public ClientImpl() {

+

+	}

+

+	public void init() {

+		for (int i = 0; i < 5; i++) {

+			String body = "{\"hello\":\"world " + String.valueOf(Math.random()) + "\"}";

+			logger.error("Loop iteration " + i + " sending body " + body + " to the topic " + topic);

+			Boolean result = publisher.publish(topic, body);

+			logger.error("Loop iteration " + i + " returned the boolean value " + result);

+		}

+	}

+

+}
\ No newline at end of file
diff --git a/message-router/publisher/sample.client/src/main/resources/OSGI-INF/blueprint/blueprint.xml b/message-router/publisher/sample.client/src/main/resources/OSGI-INF/blueprint/blueprint.xml
new file mode 100755
index 00000000..c44a68ad
--- /dev/null
+++ b/message-router/publisher/sample.client/src/main/resources/OSGI-INF/blueprint/blueprint.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
+	xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.2.0">
+
+	<bean id="client"
+		class="org.onap.ccsdk.messagerouter.publisher.client.impl.ClientImpl"
+		init-method="init">
+		<property name="publisher" ref="publisher" />
+		<cm:managed-properties
+			persistent-id="org.onap.ccsdk.messagerouter.publisher.client"
+			update-strategy="container-managed" />
+	</bean>
+
+	<reference id="publisher" interface="org.onap.ccsdk.messagerouter.publisher.api.PublisherApi" />
+
+</blueprint>
\ No newline at end of file