Add a consumer to invoke provisioner.

drip-provisioner/nb-configuration.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project-shared-configuration>
+    <!--
+This file contains additional configuration written by modules in the NetBeans IDE.
+The configuration is intended to be shared among all the users of project and
+therefore it is assumed to be part of version control checkout.
+Without this configuration present, some functionality in the IDE may be limited or fail altogether.
+-->
+    <properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
+        <!--
+Properties that influence various parts of the IDE, especially code formatting and the like. 
+You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
+That way multiple projects can share the same settings (useful for formatting rules for example).
+Any value defined here will override the pom.xml file value but is only applicable to the current project.
+-->
+        <netbeans.hint.licensePath>${project.basedir}/../licenseheader.txt</netbeans.hint.licensePath>
+        <org-netbeans-modules-whitelist.whitelist-oracle>false</org-netbeans-modules-whitelist.whitelist-oracle>
+    </properties>
+</project-shared-configuration>

drip-provisioner/pom.xml

+<?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>nl.uva.sne.drip</groupId>
+        <artifactId>drip</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>drip-simple_provisioner</artifactId>
+    <packaging>jar</packaging>
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
+    
+    <dependencies>
+        <dependency>
+            <groupId>nl.uva.sne.drip</groupId>
+            <artifactId>drip-commons</artifactId>
+            <version>1.0-SNAPSHOT</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>com.rabbitmq</groupId>
+            <artifactId>amqp-client</artifactId>
+            <version>4.0.2</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.8.6</version>
+        </dependency>
+        <dependency>
+            <groupId>org.json</groupId>
+            <artifactId>json</artifactId>
+            <version>20090211</version>
+            <type>jar</type>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file

drip-provisioner/src/main/java/nl/uva/sne/drip/drip/provisioner/RPCServer.java

+/*
+ * Copyright 2017 S. Koulouzis, Wang Junchao, Huan Zhou, Yang Hu 
+ *
+ * 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.
+ */
+package nl.uva.sne.drip.drip.provisioner;
+
+import com.rabbitmq.client.AMQP;
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import java.io.IOException;
+import java.util.concurrent.TimeoutException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author H. Zhou
+ */
+public class RPCServer {
+
+    private static final String RPC_QUEUE_NAME = "provisioner_queue";
+    private static final String HOST = "172.17.0.3";
+
+    public static void main(String[] argv) {
+        start();
+    }
+
+    private static void start() {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost(HOST);
+        factory.setPassword("guest");
+        factory.setUsername("guest");
+        factory.setPort(AMQP.PROTOCOL.PORT);
+        try (Connection connection = factory.newConnection()) {
+            Channel channel = connection.createChannel();
+            //We define the queue name 
+            channel.queueDeclare(RPC_QUEUE_NAME, false, false, false, null);
+            //Set our own customized consummer 
+            Consumer c = new Consumer(channel);
+            //Start listening for messages 
+            channel.basicConsume(RPC_QUEUE_NAME, false, c);
+
+            //Block so we don't close the channel
+            while (true) {
+                try {
+                    Thread.sleep(100);
+                } catch (InterruptedException _ignore) {
+                }
+            }
+
+        } catch (IOException | TimeoutException ex) {
+            Logger.getLogger(RPCServer.class.getName()).log(Level.SEVERE, null, ex);
+        }
+
+    }
+
+}