1 files changed, 154 insertions, 0 deletions
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/ToyExchange.java b/qpid/java/common/src/main/java/org/apache/qpid/ToyExchange.java
new file mode 100644
index 0000000000..da6aed9629
--- /dev/null
+++ b/qpid/java/common/src/main/java/org/apache/qpid/ToyExchange.java
@@ -0,0 +1,154 @@
+package org.apache.qpid;
+/*
+ * 
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * 
+ */
+
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.qpid.transport.MessageTransfer;
+
+
+public class ToyExchange
+{
+  final static String DIRECT = "amq.direct";
+  final static String TOPIC = "amq.topic";
+  
+  private Map<String,List<LinkedBlockingQueue<MessageTransfer>>> directEx = new HashMap<String,List<LinkedBlockingQueue<MessageTransfer>>>();
+  private Map<String,List<LinkedBlockingQueue<MessageTransfer>>> topicEx = new HashMap<String,List<LinkedBlockingQueue<MessageTransfer>>>(); 
+  private Map<String,LinkedBlockingQueue<MessageTransfer>> queues = new HashMap<String,LinkedBlockingQueue<MessageTransfer>>(); 
+  
+  public void createQueue(String name)
+  {
+      queues.put(name, new LinkedBlockingQueue<MessageTransfer>());
+  }
+  
+  public LinkedBlockingQueue<MessageTransfer> getQueue(String name)
+  {
+      return queues.get(name);
+  }
+  
+  public void bindQueue(String type,String binding,String queueName)
+  {
+      LinkedBlockingQueue<MessageTransfer> queue = queues.get(queueName);
+      binding = normalizeKey(binding);
+      if(DIRECT.equals(type))
+      {
+          
+          if (directEx.containsKey(binding))
+          {
+              List<LinkedBlockingQueue<MessageTransfer>> list = directEx.get(binding);
+              list.add(queue);
+          }
+          else
+          {
+              List<LinkedBlockingQueue<MessageTransfer>> list = new LinkedList<LinkedBlockingQueue<MessageTransfer>>();
+              list.add(queue);
+              directEx.put(binding,list);
+          }
+      }
+      else
+      {
+          if (topicEx.containsKey(binding))
+          {
+              List<LinkedBlockingQueue<MessageTransfer>> list = topicEx.get(binding);
+              list.add(queue);
+          }
+          else
+          {
+              List<LinkedBlockingQueue<MessageTransfer>> list = new LinkedList<LinkedBlockingQueue<MessageTransfer>>();
+              list.add(queue);
+              topicEx.put(binding,list);
+          }
+      }
+  }
+  
+  public boolean route(String dest, String routingKey, MessageTransfer msg)
+  {
+      List<LinkedBlockingQueue<MessageTransfer>> queues;
+      if(DIRECT.equals(dest))
+      {
+          queues = directEx.get(routingKey);          
+      }
+      else
+      {
+          queues = matchWildCard(routingKey);
+      }
+      if(queues != null && queues.size()>0)
+      {
+          System.out.println("Message stored in " + queues.size() + " queues");
+          storeMessage(msg,queues);
+          return true;
+      }
+      else
+      {
+          System.out.println("Message unroutable " + msg);
+          return false;
+      }
+  }
+  
+  private String normalizeKey(String routingKey)
+  {
+      if(routingKey.indexOf(".*")>1)
+      {
+          return routingKey.substring(0,routingKey.indexOf(".*"));
+      }
+      else
+      {
+          return routingKey;
+      }
+  }
+  
+  private List<LinkedBlockingQueue<MessageTransfer>> matchWildCard(String routingKey)
+  {        
+      List<LinkedBlockingQueue<MessageTransfer>> selected = new ArrayList<LinkedBlockingQueue<MessageTransfer>>();
+      
+      for(String key: topicEx.keySet())
+      {
+          Pattern p = Pattern.compile(key);
+          Matcher m = p.matcher(routingKey);
+          if (m.find())
+          {
+              for(LinkedBlockingQueue<MessageTransfer> queue : topicEx.get(key))
+              {
+                    selected.add(queue);
+              }
+          }
+      }
+      
+      return selected;      
+  }
+
+  private void storeMessage(MessageTransfer msg,List<LinkedBlockingQueue<MessageTransfer>> selected)
+  {
+      for(LinkedBlockingQueue<MessageTransfer> queue : selected)
+      {
+          queue.offer(msg);
+      }
+  }
+  
+}