| /* |
| * 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.qpid.client; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.qpid.client.transport.TransportConnection; |
| import org.apache.qpid.jndi.PropertiesFileInitialContextFactory; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.jms.Connection; |
| import javax.jms.ConnectionFactory; |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.MessageConsumer; |
| import javax.jms.MessageListener; |
| import javax.jms.MessageProducer; |
| import javax.jms.Queue; |
| import javax.jms.Session; |
| import javax.naming.Context; |
| import javax.naming.spi.InitialContextFactory; |
| |
| import java.util.Hashtable; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * QPID-293 Setting MessageListener after connection has started can cause messages to be "lost" on a internal delivery queue |
| * <p/> |
| * The message delivery process: |
| * Mina puts a message on _queue in AMQSession and the dispatcher thread take()s |
| * from here and dispatches to the _consumers. If the _consumer doesn't have a message listener set at connection start |
| * then messages are stored on _synchronousQueue (which needs to be > 1 to pass JMS TCK as multiple consumers on a |
| * session can run in any order and a synchronous put/poll will block the dispatcher). |
| * <p/> |
| * When setting the message listener later the _synchronousQueue is just poll()'ed and the first message delivered |
| * the remaining messages will be left on the queue and lost, subsequent messages on the session will arrive first. |
| */ |
| public class DispatcherTest extends TestCase |
| { |
| private static final Logger _logger = LoggerFactory.getLogger(DispatcherTest.class); |
| |
| Context _context; |
| |
| private static final int MSG_COUNT = 6; |
| private int _receivedCount = 0; |
| private int _receivedCountWhileStopped = 0; |
| private Connection _clientConnection, _producerConnection; |
| private MessageConsumer _consumer; |
| MessageProducer _producer; |
| Session _clientSession, _producerSession; |
| |
| private final CountDownLatch _allFirstMessagesSent = new CountDownLatch(1); // all messages Sent Lock |
| private final CountDownLatch _allSecondMessagesSent = new CountDownLatch(1); // all messages Sent Lock |
| |
| private volatile boolean _connectionStopped = false; |
| |
| protected void setUp() throws Exception |
| { |
| super.setUp(); |
| TransportConnection.createVMBroker(1); |
| |
| InitialContextFactory factory = new PropertiesFileInitialContextFactory(); |
| |
| Hashtable<String, String> env = new Hashtable<String, String>(); |
| |
| env.put("connectionfactory.connection", "amqp://guest:guest@MLT_ID/test?brokerlist='vm://:1'"); |
| env.put("queue.queue", "MessageListenerTest"); |
| |
| _context = factory.getInitialContext(env); |
| |
| Queue queue = (Queue) _context.lookup("queue"); |
| |
| // Create Client 1 |
| _clientConnection = ((ConnectionFactory) _context.lookup("connection")).createConnection(); |
| |
| _clientSession = _clientConnection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| |
| _consumer = _clientSession.createConsumer(queue); |
| |
| // Create Producer |
| _producerConnection = ((ConnectionFactory) _context.lookup("connection")).createConnection(); |
| |
| _producerConnection.start(); |
| |
| _producerSession = _producerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| |
| _producer = _producerSession.createProducer(queue); |
| |
| for (int msg = 0; msg < MSG_COUNT; msg++) |
| { |
| _producer.send(_producerSession.createTextMessage("Message " + msg)); |
| } |
| } |
| |
| protected void tearDown() throws Exception |
| { |
| |
| _clientConnection.close(); |
| |
| _producerConnection.close(); |
| super.tearDown(); |
| TransportConnection.killAllVMBrokers(); |
| } |
| |
| public void testAsynchronousRecieve() |
| { |
| _logger.info("Test Start"); |
| |
| assertTrue(!((AMQConnection) _clientConnection).started()); |
| |
| // Set default Message Listener |
| try |
| { |
| _consumer.setMessageListener(new MessageListener() |
| { |
| public void onMessage(Message message) |
| { |
| _logger.info("Client 1 ML 1 Received Message(" + _receivedCount + "):" + message); |
| |
| _receivedCount++; |
| |
| if (_receivedCount == MSG_COUNT) |
| { |
| _allFirstMessagesSent.countDown(); |
| } |
| |
| if (_connectionStopped) |
| { |
| _logger.info("Running with Message:" + _receivedCount); |
| } |
| |
| if (_connectionStopped && (_allFirstMessagesSent.getCount() == 0)) |
| { |
| _receivedCountWhileStopped++; |
| } |
| |
| if (_allFirstMessagesSent.getCount() == 0) |
| { |
| if (_receivedCount == (MSG_COUNT * 2)) |
| { |
| _allSecondMessagesSent.countDown(); |
| } |
| } |
| } |
| }); |
| |
| assertTrue("Connecion should not be started", !((AMQConnection) _clientConnection).started()); |
| _clientConnection.start(); |
| } |
| catch (JMSException e) |
| { |
| _logger.error("Error Setting Default ML on consumer1"); |
| } |
| |
| try |
| { |
| _allFirstMessagesSent.await(1000, TimeUnit.MILLISECONDS); |
| } |
| catch (InterruptedException e) |
| { |
| // do nothing |
| } |
| |
| try |
| { |
| assertTrue("Connecion should be started", ((AMQConnection) _clientConnection).started()); |
| _clientConnection.stop(); |
| _connectionStopped = true; |
| } |
| catch (JMSException e) |
| { |
| _logger.error("Error stopping connection"); |
| } |
| |
| try |
| { |
| _logger.error("Send additional messages"); |
| |
| for (int msg = 0; msg < MSG_COUNT; msg++) |
| { |
| _producer.send(_producerSession.createTextMessage("Message " + msg)); |
| } |
| } |
| catch (JMSException e) |
| { |
| _logger.error("Unable to send additional messages", e); |
| } |
| |
| try |
| { |
| Thread.sleep(1000); |
| } |
| catch (InterruptedException e) |
| { |
| // ignore |
| } |
| |
| try |
| { |
| _logger.info("Restarting connection"); |
| |
| _connectionStopped = false; |
| _clientConnection.start(); |
| } |
| catch (JMSException e) |
| { |
| _logger.error("Error Setting Better ML on consumer1", e); |
| } |
| |
| _logger.info("Waiting upto 2 seconds for messages"); |
| |
| try |
| { |
| _allSecondMessagesSent.await(1000, TimeUnit.MILLISECONDS); |
| } |
| catch (InterruptedException e) |
| { |
| // do nothing |
| } |
| |
| assertEquals("Messages not received correctly", 0, _allFirstMessagesSent.getCount()); |
| assertEquals("Messages not received correctly", 0, _allSecondMessagesSent.getCount()); |
| assertEquals("Client didn't get all messages", MSG_COUNT * 2, _receivedCount); |
| assertEquals("Messages received while stopped is not 0", 0, _receivedCountWhileStopped); |
| } |
| |
| public static junit.framework.Test suite() |
| { |
| return new junit.framework.TestSuite(DispatcherTest.class); |
| } |
| } |