| /* |
| * 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 org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.test.utils.QpidBrokerTestCase; |
| import org.apache.qpid.util.LogMonitor; |
| |
| import javax.jms.Connection; |
| import javax.jms.ExceptionListener; |
| 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 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 MessageListenerTest extends QpidBrokerTestCase implements MessageListener, ExceptionListener |
| { |
| private static final Logger _logger = LoggerFactory.getLogger(MessageListenerTest.class); |
| |
| private Context _context; |
| |
| private static final int MSG_COUNT = 5; |
| private int _receivedCount = 0; |
| private int _errorCount = 0; |
| private MessageConsumer _consumer; |
| private Connection _clientConnection; |
| private CountDownLatch _awaitMessages = new CountDownLatch(MSG_COUNT); |
| |
| protected void setUp() throws Exception |
| { |
| super.setUp(); |
| |
| // Create Client |
| _clientConnection = getConnection("guest", "guest"); |
| |
| _clientConnection.start(); |
| |
| Session clientSession = _clientConnection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| |
| Queue queue =clientSession.createQueue("message-listener-test-queue"); |
| |
| _consumer = clientSession.createConsumer(queue); |
| |
| // Create Producer |
| |
| Connection producerConnection = getConnection("guest", "guest"); |
| |
| producerConnection.start(); |
| |
| Session producerSession = producerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| |
| MessageProducer producer = producerSession.createProducer(queue); |
| |
| for (int msg = 0; msg < MSG_COUNT; msg++) |
| { |
| producer.send(producerSession.createTextMessage("Message " + msg)); |
| } |
| |
| producerConnection.close(); |
| |
| } |
| |
| protected void tearDown() throws Exception |
| { |
| if (_clientConnection != null) |
| { |
| _clientConnection.close(); |
| } |
| super.tearDown(); |
| } |
| |
| public void testSynchronousReceive() throws Exception |
| { |
| for (int msg = 0; msg < MSG_COUNT; msg++) |
| { |
| assertTrue(_consumer.receive(2000) != null); |
| } |
| } |
| |
| public void testSynchronousReceiveNoWait() throws Exception |
| { |
| for (int msg = 0; msg < MSG_COUNT; msg++) |
| { |
| assertTrue("Failed to receive message " + msg, _consumer.receiveNoWait() != null); |
| } |
| } |
| |
| public void testAsynchronousReceive() throws Exception |
| { |
| _consumer.setMessageListener(this); |
| |
| _logger.info("Waiting 3 seconds for messages"); |
| |
| try |
| { |
| _awaitMessages.await(3000, TimeUnit.MILLISECONDS); |
| } |
| catch (InterruptedException e) |
| { |
| // do nothing |
| } |
| // Should have received all async messages |
| assertEquals(MSG_COUNT, _receivedCount); |
| |
| } |
| |
| public void testReceiveThenUseMessageListener() throws Exception |
| { |
| _logger.error("Test disabled as initial receive is not called first"); |
| // Perform initial receive to start connection |
| assertTrue(_consumer.receive(2000) != null); |
| _receivedCount++; |
| |
| // Sleep to ensure remaining 4 msgs end up on _synchronousQueue |
| Thread.sleep(1000); |
| |
| // Set the message listener and wait for the messages to come in. |
| _consumer.setMessageListener(this); |
| |
| _logger.info("Waiting 3 seconds for messages"); |
| |
| try |
| { |
| _awaitMessages.await(3000, TimeUnit.MILLISECONDS); |
| } |
| catch (InterruptedException e) |
| { |
| // do nothing |
| } |
| // Should have received all async messages |
| assertEquals(MSG_COUNT, _receivedCount); |
| |
| _clientConnection.close(); |
| |
| Connection conn = getConnection("guest", "guest"); |
| Session clientSession = conn.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| Queue queue = clientSession.createQueue("message-listener-test-queue"); |
| MessageConsumer cons = clientSession.createConsumer(queue); |
| conn.start(); |
| |
| // check that the messages were actually dequeued |
| assertTrue(cons.receive(2000) == null); |
| } |
| |
| /** |
| * Tests the case where the message listener throws an java.lang.Error. |
| * |
| */ |
| public void testMessageListenerThrowsError() throws Exception |
| { |
| final String javaLangErrorMessageText = "MessageListener failed with java.lang.Error"; |
| _clientConnection.setExceptionListener(this); |
| |
| _awaitMessages = new CountDownLatch(1); |
| |
| _consumer.setMessageListener(new MessageListener() |
| { |
| public void onMessage(Message message) |
| { |
| try |
| { |
| _logger.debug("onMessage called"); |
| _receivedCount++; |
| |
| |
| throw new Error(javaLangErrorMessageText); |
| } |
| finally |
| { |
| _awaitMessages.countDown(); |
| } |
| } |
| }); |
| |
| |
| _logger.info("Waiting 3 seconds for message"); |
| _awaitMessages.await(3000, TimeUnit.MILLISECONDS); |
| |
| assertEquals("onMessage should have been called", 1, _receivedCount); |
| assertEquals("onException should NOT have been called", 0, _errorCount); |
| |
| // Check that Error has been written to the application log. |
| |
| LogMonitor _monitor = new LogMonitor(_outputFile); |
| assertTrue("The expected message not written to log file.", |
| _monitor.waitForMessage(javaLangErrorMessageText, LOGMONITOR_TIMEOUT)); |
| |
| if (_clientConnection != null) |
| { |
| try |
| { |
| _clientConnection.close(); |
| } |
| catch (JMSException e) |
| { |
| // Ignore connection close errors for this test. |
| } |
| finally |
| { |
| _clientConnection = null; |
| } |
| } |
| } |
| |
| public void onMessage(Message message) |
| { |
| _logger.info("Received Message(" + _receivedCount + "):" + message); |
| |
| _receivedCount++; |
| _awaitMessages.countDown(); |
| } |
| |
| public void onException(JMSException e) |
| { |
| _logger.info("Exception received", e); |
| _errorCount++; |
| } |
| |
| public static junit.framework.Test suite() |
| { |
| return new junit.framework.TestSuite(MessageListenerTest.class); |
| } |
| } |