content: /*
   * 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();
  
     @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();
     }
  
     @Override
     protected void tearDown() throws Exception {
        super.tearDown();
        connection.close();
     }
  
     /**
      * Tests if a consumer can be created asynchronusly
      */
     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
      */
     @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);
        }
     }
  }
  