JmsCreateConsumerInOnMessageTest.java

/**
 * 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.
 */
package org.apache.activemq;

import javax.jms.Connection;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.Topic;

/**
 *
 */
public class JmsCreateConsumerInOnMessageTest extends TestSupport implements MessageListener {

   private Connection connection;
   private Session publisherSession;
   private Session consumerSession;
   private MessageConsumer consumer;
   private MessageConsumer testConsumer;
   private MessageProducer producer;
   private Topic topic;
   private final Object lock = new Object();

   /*
    * @see junit.framework.TestCase#setUp()
    */
   @Override
   protected void setUp() throws Exception {
      super.setUp();
      super.topic = true;
      connection = createConnection();
      connection.setClientID("connection:" + getSubject());
      publisherSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      consumerSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      topic = (Topic) super.createDestination("Test.Topic");
      consumer = consumerSession.createConsumer(topic);
      consumer.setMessageListener(this);
      producer = publisherSession.createProducer(topic);
      connection.start();
   }

   /*
    * @see junit.framework.TestCase#tearDown()
    */
   @Override
   protected void tearDown() throws Exception {
      super.tearDown();
      connection.close();
   }

   /**
    * Tests if a consumer can be created asynchronusly
    *
    * @throws Exception
    */
   public void testCreateConsumer() throws Exception {
      Message msg = super.createMessage();
      producer.send(msg);
      synchronized (lock) {
         while (testConsumer == null) {
            lock.wait(3000);
         }
      }
      assertTrue(testConsumer != null);
   }

   /**
    * Use the asynchronous subscription mechanism
    *
    * @param message
    */
   @Override
   public void onMessage(Message message) {
      try {
         testConsumer = consumerSession.createConsumer(topic);
         consumerSession.createProducer(topic);
         synchronized (lock) {
            lock.notify();
         }
      } catch (Exception ex) {
         ex.printStackTrace();
         assertTrue(false);
      }
   }
}