implemented message for drip componets

implmented example planner 

.gitignore

 /drip-commons/target/
-/drip-api/target/
+/drip-api/target/
\ No newline at end of file
+/drip-planner/target/
\ No newline at end of file

drip-api/src/main/java/nl/uva/sne/drip/api/rest/UploadToscaController.java

@@ -15,11 +15,11 @@
  */
 package nl.uva.sne.drip.api.rest;
 
+import nl.uva.sne.drip.commons.types.FileParameter;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import nl.uva.sne.drip.api.rpc.Planner;
+import nl.uva.sne.drip.api.rpc.PlannerCaller;
 import java.io.File;
 import java.io.IOException;
-import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -28,25 +28,16 @@ import java.util.List;
 import java.util.concurrent.TimeoutException;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import javax.annotation.security.RolesAllowed;
-import javax.ws.rs.Consumes;
-import javax.ws.rs.GET;
-import javax.ws.rs.PUT;
-import javax.ws.rs.Path;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.Response;
-import nl.uva.sne.drip.commons.types.IRequest;
-import nl.uva.sne.drip.commons.types.Request;
+import nl.uva.sne.drip.commons.types.Message;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.stereotype.Component;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.client.RestTemplate;
 import org.springframework.web.multipart.MultipartFile;
+import nl.uva.sne.drip.commons.types.IMessage;
 
 /**
  *
@@ -71,22 +62,33 @@ public class UploadToscaController {
             try {
 
                 String originalFileName = file.getOriginalFilename();
-                String name = originalFileName + System.currentTimeMillis();
-                File targetToscaFile = new File(inputToscaFolderPath + File.separator + name);
-                file.transferTo(targetToscaFile);
+                String name = System.currentTimeMillis() + "_" + originalFileName;
+//                File targetToscaFile = new File(inputToscaFolderPath + File.separator + name);
+//                file.transferTo(targetToscaFile);
 
-                Planner planner = new Planner(messageBrokerHost);
+                Message invokationMessage = new Message();
 
-                Request r = new Request();
-                List args = new ArrayList();
-                FileArgument fileArg = new FileArgument();
-                fileArg.setURL(targetToscaFile.toURI().toString());
-                args.add(targetToscaFile);
-                r.setArguments(args);
-                r.setCreationDate(new Date(System.currentTimeMillis()));
-                r.setStatus(IRequest.Status.SUCCESS);
+                List parameters = new ArrayList();
+                FileParameter fileArgument = new FileParameter();
+                byte[] bytes = file.getBytes();//Files.readAllBytes(Paths.get(targetToscaFile.getAbsolutePath()));
+                String charset = "UTF-8";
+                fileArgument.setValue(new String(bytes, charset));
+                fileArgument.setEncoding(charset);
+                fileArgument.setName(name);
+                parameters.add(fileArgument);
 
-                String returned = planner.plan(r);
+                fileArgument = new FileParameter();
+                bytes = Files.readAllBytes(Paths.get("/home/alogo/Downloads/DRIP/example_a.yml"));
+                fileArgument.setValue(new String(bytes, charset));
+                fileArgument.setEncoding(charset);
+                fileArgument.setName("example_a.yml");
+                parameters.add(fileArgument);
+
+                invokationMessage.setParameters(parameters);
+                invokationMessage.setCreationDate(new Date(System.currentTimeMillis()));
+
+                PlannerCaller planner = new PlannerCaller(messageBrokerHost);
+                String returned = planner.plan(invokationMessage);
 
                 planner.close();
                 return "You successfully uploaded " + name + " into " + name + "-uploaded !";
@@ -98,26 +100,25 @@ public class UploadToscaController {
     }
 
     @RequestMapping(value = "/args", method = RequestMethod.GET)
-    public Request args() {
+    public Message args() {
         try {
-            Request r = new Request();
+            Message r = new Message();
             List args = new ArrayList();
             args.add(1);
             args.add("str");
-            FileArgument targetToscaFile = new FileArgument();
+            FileParameter targetToscaFile = new FileParameter();
             byte[] bytes = Files.readAllBytes(Paths.get("/home/alogo/Downloads/planner_output_all.yml"));
-            targetToscaFile.setContents(new String(bytes, "UTF-8"));
+            targetToscaFile.setValue(new String(bytes, "UTF-8"));
+            targetToscaFile.setName("planner_output_all.yml");
             targetToscaFile.setEncoding("UTF-8");
 
             args.add(targetToscaFile);
-            r.setArguments(args);
+            r.setParameters(args);
             r.setCreationDate(new Date(System.currentTimeMillis()));
-            r.setStatus(IRequest.Status.SUCCESS);
-
-            ObjectMapper mapper = new ObjectMapper();
-            String jsonInString = mapper.writeValueAsString(r);
-            System.err.println(jsonInString);
 
+//            ObjectMapper mapper = new ObjectMapper();
+//            String jsonInString = mapper.writeValueAsString(r);
+//            System.err.println(jsonInString);
             return r;
         } catch (IOException ex) {
             Logger.getLogger(UploadToscaController.class.getName()).log(Level.SEVERE, null, ex);

drip-api/src/main/java/nl/uva/sne/drip/api/rpc/DRIPComponent.java → drip-api/src/main/java/nl/uva/sne/drip/api/rpc/DRIPComponentCaller.java

@@ -19,9 +19,9 @@ package nl.uva.sne.drip.api.rpc;
  *
  * @author S. Koulouzis.
  */
-class DRIPComponent {
+class DRIPComponentCaller {
 
-    public DRIPComponent(){
+    public DRIPComponentCaller(){
         
     }
 

drip-api/src/main/java/nl/uva/sne/drip/api/rpc/Planner.java → drip-api/src/main/java/nl/uva/sne/drip/api/rpc/PlannerCaller.java

@@ -16,7 +16,6 @@
 package nl.uva.sne.drip.api.rpc;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
-import java.io.File;
 import java.io.IOException;
 
 import com.rabbitmq.client.AMQP;
@@ -25,27 +24,24 @@ import com.rabbitmq.client.Connection;
 import com.rabbitmq.client.ConnectionFactory;
 import com.rabbitmq.client.DefaultConsumer;
 import com.rabbitmq.client.Envelope;
-import com.rabbitmq.client.RpcClient;
-import java.nio.file.Files;
-import java.nio.file.Paths;
 import java.util.UUID;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.TimeoutException;
-import nl.uva.sne.drip.commons.types.Request;
+import nl.uva.sne.drip.commons.types.Message;
 
 /**
  *
  * @author S. Koulouzis.
  */
-public class Planner {
+public class PlannerCaller {
 
     private static final String REQUEST_QUEUE_NAME = "planner_queue";
     private final Connection connection;
     private final Channel channel;
     private final String replyQueueName;
 
-    public Planner(String messageBrokerHost) throws IOException, TimeoutException {
+    public PlannerCaller(String messageBrokerHost) throws IOException, TimeoutException {
 
         ConnectionFactory factory = new ConnectionFactory();
         factory.setHost(messageBrokerHost);
@@ -59,7 +55,7 @@ public class Planner {
         replyQueueName = channel.queueDeclare().getQueue();
     }
 
-    public String plan(Request r) throws IOException, TimeoutException, InterruptedException {
+    public String plan(Message r) throws IOException, TimeoutException, InterruptedException {
 
         ObjectMapper mapper = new ObjectMapper();
         String jsonInString = mapper.writeValueAsString(r);

drip-api/src/main/java/nl/uva/sne/drip/api/rest/FileArgument.java → drip-commons/src/main/java/nl/uva/sne/drip/commons/types/FileParameter.java

@@ -13,35 +13,25 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package nl.uva.sne.drip.api.rest;
+package nl.uva.sne.drip.commons.types;
 
 import java.io.Serializable;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
 
 /**
  *
  * @author S. Koulouzis.
  */
-class FileArgument implements IFileArgument, Serializable {
+public class FileParameter implements IFileParameter, IParameter, Serializable {
 
-    @Id
-    @GeneratedValue(strategy = GenerationType.AUTO)
-    private String id;
+    public static final String NAME = "name";
+    public static final String URL = "url";
+    public static final String VALUE = "value";
+    public static final String ENCODING = "encoding";
+    
     private String url;
     private String encoding;
-    private String contents;
-
-    @Override
-    public void setID(String id) {
-        this.id = id;
-    }
-
-    @Override
-    public String getID() {
-        return this.id;
-    }
+    private String value;
+    private String name;
 
     @Override
     public String getURL() {
@@ -64,13 +54,23 @@ class FileArgument implements IFileArgument, Serializable {
     }
 
     @Override
-    public String getContents() {
-        return this.contents;
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String getName() {
+        return this.name;
+    }
+
+    @Override
+    public String getValue() {
+        return this.value;
     }
 
     @Override
-    public void setContents(String contents) {
-        this.contents = contents;
+    public void setValue(String value) {
+        this.value = value;
     }
 
 }

drip-api/src/main/java/nl/uva/sne/drip/api/rest/IFileArgument.java → drip-commons/src/main/java/nl/uva/sne/drip/commons/types/IFileParameter.java

@@ -13,17 +13,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package nl.uva.sne.drip.api.rest;
+package nl.uva.sne.drip.commons.types;
 
 /**
  *
  * @author S. Koulouzis.
  */
-interface IFileArgument {
-
-    public void setID(String id);
-
-    public String getID();
+public interface IFileParameter {
 
     public String getURL();
 
@@ -33,8 +29,8 @@ interface IFileArgument {
 
     public void setEncoding(String encoding);
 
-    public String getContents();
+    public void setName(String name);
 
-    public void setContents(String contents);
+    public String getName();
 
 }

drip-commons/src/main/java/nl/uva/sne/drip/commons/types/IRequest.java → drip-commons/src/main/java/nl/uva/sne/drip/commons/types/IMessage.java

@@ -22,27 +22,14 @@ import java.util.List;
  *
  * @author S. Koulouzis
  */
-public interface IRequest {
-
-    public enum Status {
-        FAILED,
-        SUCCESS;
-    }
-
-    public void setID(String id);
-
-    public String getID();
-
-    public Date getCreationDate();
+public interface IMessage {
     
-        public void setCreationDate(Date creationDate);
-
-    public Status getStatus();
+    public Date getCreationDate();
 
-    public void setStatus(Status status);
+    public void setCreationDate(Date creationDate);
 
-    public void setArguments(List args);
+    public void setParameters(List args);
 
-    public List getArguments();
+    public List getParameters();
 
 }

drip-commons/src/main/java/nl/uva/sne/drip/commons/types/IParameter.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.commons.types;
+
+/**
+ *
+ * @author S. Koulouzis
+ */
+public interface IParameter {
+
+    public void setName(String name);
+
+    public String getName();
+
+    public String getValue();
+
+    public void setValue(String value);
+
+}

drip-commons/src/main/java/nl/uva/sne/drip/commons/types/Request.java → drip-commons/src/main/java/nl/uva/sne/drip/commons/types/Message.java

@@ -34,55 +34,28 @@ import java.util.List;
  * @author S. Koulouzis.
  */
 //@Entity
-public class Request implements IRequest, Serializable {
-
-//    @Id
-//    @GeneratedValue(strategy = GenerationType.AUTO)
-    private String id;
+public class Message implements IMessage, Serializable {
 
     @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss.S")
 //    @Temporal(TemporalType.DATE)
     private Date creationDate;
 
 //    @Column
-    private Status status;
-
-//    @Column
-    private List arguments;
-
-    @Override
-    public void setID(String id) {
-        this.id = id;
-    }
-
-    @Override
-    public String getID() {
-        return this.id;
-    }
-
+    private List<IParameter> parameters;
+    
     @Override
     public Date getCreationDate() {
         return this.creationDate;
     }
 
     @Override
-    public Status getStatus() {
-        return this.status;
-    }
-
-    @Override
-    public void setStatus(Status status) {
-        status = this.status;
-    }
-
-    @Override
-    public void setArguments(List args) {
-        this.arguments = args;
+    public void setParameters(List args) {
+        this.parameters = args;
     }
 
     @Override
-    public List getArguments() {
-        return this.arguments;
+    public List getParameters() {
+        return this.parameters;
     }
 
     @Override

drip-planner/pom.xml

@@ -14,10 +14,28 @@
     </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-planner/src/main/java/nl/uva/sne/drip/drip/planner/Consumer.java

@@ -15,11 +15,32 @@
  */
 package nl.uva.sne.drip.drip.planner;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.rabbitmq.client.AMQP;
 import com.rabbitmq.client.Channel;
 import com.rabbitmq.client.DefaultConsumer;
 import com.rabbitmq.client.Envelope;
+import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.UnsupportedEncodingException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import nl.uva.sne.drip.commons.types.FileParameter;
+import nl.uva.sne.drip.commons.types.Message;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+import nl.uva.sne.drip.commons.types.IFileParameter;
 
 /**
  *
@@ -27,13 +48,13 @@ import java.io.IOException;
  */
 public class Consumer extends DefaultConsumer {
 
-    private static final String RPC_QUEUE_NAME = "planner_queue";
-    private static final String HOST = "172.17.0.2";
     private final Channel channel;
+    private final Planner panner;
 
     public Consumer(Channel channel) {
         super(channel);
         this.channel = channel;
+        this.panner = new Planner();
     }
 
     @Override
@@ -41,22 +62,119 @@ public class Consumer extends DefaultConsumer {
         AMQP.BasicProperties replyProps = new AMQP.BasicProperties.Builder()
                 .correlationId(properties.getCorrelationId())
                 .build();
-
         String response = "";
 
         try {
             String message = new String(body, "UTF-8");
-            System.out.println(" [.] fib(" + message + ")");
+            File[] inputFiles;
+
+            inputFiles = jacksonUnmarshalExample(message);
+            panner.plan(inputFiles[0].getAbsolutePath(), inputFiles[1].getAbsolutePath(), "/tmp/out");
+            inputFiles = simpleJsonUnmarshalExample(message);
+            List<File> files = panner.plan(inputFiles[0].getAbsolutePath(), inputFiles[1].getAbsolutePath(), "/tmp/out");
+            response = jacksonMarshalExample(files);
+            System.err.println(response);
+
+            response = simpleJsonMarshalExample(files);
+            System.err.println(response);
 
-            response += message;
-        } catch (RuntimeException e) {
-            System.out.println(" [.] " + e.toString());
+        } catch (RuntimeException | JSONException ex) {
+            Logger.getLogger(Consumer.class.getName()).log(Level.SEVERE, null, ex);
         } finally {
             channel.basicPublish("", properties.getReplyTo(), replyProps, response.getBytes("UTF-8"));
-
             channel.basicAck(envelope.getDeliveryTag(), false);
         }
 
     }
 
+    private File[] jacksonUnmarshalExample(String message) throws IOException {
+        File[] files = new File[2];
+        ObjectMapper mapper = new ObjectMapper();
+        Message request = mapper.readValue(message, Message.class);
+        //We know that in parameters 0-1 we should have files
+        for (int i = 0; i < 2; i++) {
+            Map<String, String> fileArg = (java.util.LinkedHashMap) request.getParameters().get(i);
+
+            String fileName = fileArg.get(FileParameter.NAME);
+            //If not null should be able to use it to download file 
+            String url = fileArg.get(FileParameter.URL);
+            if (url != null) {
+                //download
+            }
+
+            String encoding = fileArg.get(FileParameter.ENCODING);
+            String value = fileArg.get(FileParameter.VALUE);
+            try (PrintWriter out = new PrintWriter(fileName)) {
+                out.print(value);
+            }
+            files[i] = new File(fileName);
+        }
+        return files;
+    }
+
+    private File[] simpleJsonUnmarshalExample(String message) throws JSONException, FileNotFoundException {
+        File[] files = new File[2];
+
+        JSONObject jo = new JSONObject(message);
+        JSONArray args = jo.getJSONArray("parameters");
+        //We know that in parameters 0-2 we should have files
+        for (int i = 0; i < 2; i++) {
+            JSONObject arg = (JSONObject) args.get(i);
+            String fileName = (String) arg.get(FileParameter.NAME);
+            //If not null should be able to use it to download file
+
+            if (!arg.isNull("url")) {
+                String url = (String) arg.get("url");
+                //download
+            }
+            //Otherwise get contents as string 
+            String value = (String) arg.get(FileParameter.VALUE);
+            String encoding = (String) arg.get(FileParameter.ENCODING);
+
+            try (PrintWriter out = new PrintWriter(fileName)) {
+                out.print(value);
+            }
+            files[i] = new File(fileName);
+        }
+        return files;
+    }
+
+    private String jacksonMarshalExample(List<File> files) throws UnsupportedEncodingException, IOException {
+        Message responseMessage = new Message();
+
+        List parameters = new ArrayList();
+        String charset = "UTF-8";
+        for (File f : files) {
+            FileParameter fileParam = new FileParameter();
+            byte[] bytes = Files.readAllBytes(Paths.get(f.getAbsolutePath()));
+            fileParam.setValue(new String(bytes, charset));
+            fileParam.setEncoding(charset);
+            fileParam.setName(f.getName());
+            parameters.add(fileParam);
+
+        }
+        responseMessage.setParameters(parameters);
+        responseMessage.setCreationDate(new Date(System.currentTimeMillis()));
+
+        ObjectMapper mapper = new ObjectMapper();
+        return mapper.writeValueAsString(responseMessage);
+    }
+
+    private String simpleJsonMarshalExample(List<File> files) throws JSONException, IOException {
+        JSONObject jo = new JSONObject();
+        jo.put("creationDate", new Date(System.currentTimeMillis()));
+        List parameters = new ArrayList();
+        String charset = "UTF-8";
+        for (File f : files) {
+            Map<String, String> fileArguments = new HashMap<>();
+            fileArguments.put("encoding", charset);
+            fileArguments.put("name", f.getName());
+            byte[] bytes = Files.readAllBytes(Paths.get(f.getAbsolutePath()));
+            fileArguments.put("value", new String(bytes, charset));
+            parameters.add(fileArguments);
+        }
+        jo.put("parameters", parameters);
+        return jo.toString();
+    }
+
 }

drip-planner/src/main/java/nl/uva/sne/drip/drip/planner/Panner.java → drip-planner/src/main/java/nl/uva/sne/drip/drip/planner/Planner.java

@@ -16,97 +16,101 @@
 package nl.uva.sne.drip.drip.planner;
 
 import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 
 /**
  *
  * @author S. Koulouzis
  */
-public class Panner {
+public class Planner {
 
-    public void plan(String input, String example, String outputDirPath) {
+    public List<File> plan(String input, String example, String outputDirPath) throws FileNotFoundException, IOException {
         // TODO Auto-generated method stub
         BufferedReader in;
-        try {
-            in = new BufferedReader(new FileReader(input));
-            String line = null;
-            boolean check = false;
-            ArrayList<String> dockerNames = new ArrayList<>();
-            while ((line = in.readLine()) != null) {
-                if (line.contains("topology_template")) {
-                    check = true;
-                }
-                if (check) {
-                    if (line.contains("file")) {
-                        String content = line.trim().replace('\"', ' ');
-                        String[] cs = content.split(":");
-                        String docker_name = cs[1].trim();
-                        dockerNames.add(docker_name);
-                    }
-                }
-                if (line.contains("tosca_definitions_version")
-                        || line.contains("description")
-                        || line.contains("repositories")
-                        || line.contains("artifact_types") || line.contains("data_types")
-                        || line.contains("node_types")) {
-                    check = false;
+
+        in = new BufferedReader(new FileReader(input));
+        String line;
+        boolean check = false;
+        ArrayList<String> dockerNames = new ArrayList<>();
+        while ((line = in.readLine()) != null) {
+            if (line.contains("topology_template")) {
+                check = true;
+            }
+            if (check) {
+                if (line.contains("file")) {
+                    String content = line.trim().replace('\"', ' ');
+                    String[] cs = content.split(":");
+                    String docker_name = cs[1].trim();
+                    dockerNames.add(docker_name);
                 }
             }
-            in.close();
+            if (line.contains("tosca_definitions_version")
+                    || line.contains("description")
+                    || line.contains("repositories")
+                    || line.contains("artifact_types") || line.contains("data_types")
+                    || line.contains("node_types")) {
+                check = false;
+            }
+        }
+        in.close();
 
-            in = new BufferedReader(new FileReader(example));
+        in = new BufferedReader(new FileReader(example));
 
-            String block = "";
-            String head = "";
+        String block = "";
+        String head = "";
 
-            boolean block_b = false;
-            while ((line = in.readLine()) != null) {
-                if (line.contains("components")) {
-                    block_b = true;
-                    continue;
-                }
-                if (block_b) {
-                    block += line + "\n";
-                }
-                if (!block_b) {
-                    head += line + "\n";
-                }
+        boolean block_b = false;
+        while ((line = in.readLine()) != null) {
+            if (line.contains("components")) {
+                block_b = true;
+                continue;
+            }
+            if (block_b) {
+                block += line + "\n";
             }
+            if (!block_b) {
+                head += line + "\n";
+            }
+        }
 
-            in.close();
-            UUID fuuid = UUID.randomUUID();
-            String file_guid = fuuid.toString();
+        in.close();
+        UUID fuuid = UUID.randomUUID();
+        String file_guid = fuuid.toString();
 
-            String outfPath = outputDirPath + "/" + file_guid + ".yml";
-            FileWriter outputf = new FileWriter(outfPath);
-            outputf.write(head);
-            outputf.write("components:\n");
-            for (int i = 0; i < dockerNames.size(); i++) {
-                UUID uuid = UUID.randomUUID();
-                String name_guid = uuid.toString();
-                String privateAddress = "192.168.10." + (i + 10);
-                if (i == 0) {
-                    outputf.write(generateVM(block, name_guid, dockerNames.get(i), privateAddress, "master"));
-                } else {
-                    outputf.write(generateVM(block, name_guid, dockerNames.get(i), privateAddress, "slave"));
-                }
+        String outfPath = outputDirPath + "/" + file_guid + ".yml";
+        FileWriter outputf = new FileWriter(outfPath);
+        outputf.write(head);
+        outputf.write("components:\n");
+        for (int i = 0; i < dockerNames.size(); i++) {
+            UUID uuid = UUID.randomUUID();
+            String name_guid = uuid.toString();
+            String privateAddress = "192.168.10." + (i + 10);
+            if (i == 0) {
+                outputf.write(generateVM(block, name_guid, dockerNames.get(i), privateAddress, "master"));
+            } else {
+                outputf.write(generateVM(block, name_guid, dockerNames.get(i), privateAddress, "slave"));
             }
-            outputf.close();
-
-            String allFilePath = outputDirPath + "/" + "planner_output_all.yml";
-            outputf = new FileWriter(allFilePath);
-            outputf.write("topologies:\n");
-            outputf.write("  - topology: " + file_guid + "\n");
-            outputf.write("    cloudProvider: EC2\n");
-            outputf.close();
-        } catch (IOException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
         }
+        outputf.close();
+
+        String allFilePath = outputDirPath + "/" + "planner_output_all.yml";
+        outputf = new FileWriter(allFilePath);
+        outputf.write("topologies:\n");
+        outputf.write("  - topology: " + file_guid + "\n");
+        outputf.write("    cloudProvider: EC2\n");
+        outputf.close();
+
+        List<File> outputFiles = new ArrayList<>();
+        outputFiles.add(new File(outfPath));
+        outputFiles.add(new File(allFilePath));
+        return outputFiles;
     }
 
     private String generateVM(String block, String nodeName, String dockerName, String privateAddress, String role) {

drip-planner/src/main/java/nl/uva/sne/drip/drip/planner/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.planner;
+
+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 S. Koulouzis
+ */
+public class RPCServer {
+
+    private static final String RPC_QUEUE_NAME = "planner_queue";
+    private static final String HOST = "172.17.0.2";
+
+    public static void main(String[] argv) {
+        start();
+    }
+
+    private static void start() {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost(HOST);
+        try (Connection connection = factory.newConnection()) {
+            Channel channel = connection.createChannel();
+            channel.queueDeclare(RPC_QUEUE_NAME, false, false, false, null);
+            Consumer c = new Consumer(channel);
+            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);
+        }
+
+    }
+
+}