| /* |
| * |
| * 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.failover; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import javax.jms.Connection; |
| import javax.jms.Destination; |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.MessageConsumer; |
| import javax.jms.MessageProducer; |
| import javax.jms.Session; |
| import javax.jms.TextMessage; |
| |
| import org.apache.log4j.Logger; |
| import org.apache.qpid.client.AMQConnection; |
| import org.apache.qpid.client.AMQConnectionURL; |
| import org.apache.qpid.jms.ConnectionListener; |
| import org.apache.qpid.test.utils.QpidBrokerTestCase; |
| import org.apache.qpid.test.utils.TestUtils; |
| import org.apache.qpid.util.FileUtils; |
| |
| public class MultipleBrokersFailoverTest extends QpidBrokerTestCase implements ConnectionListener |
| { |
| private static final Logger _logger = Logger.getLogger(MultipleBrokersFailoverTest.class); |
| |
| private static final String FAILOVER_VIRTUAL_HOST = "failover"; |
| private static final String NON_FAILOVER_VIRTUAL_HOST = "nonfailover"; |
| private static final String BROKER_PORTION_FORMAT = "tcp://localhost:%d?connectdelay='%d',retries='%d'"; |
| private static final int FAILOVER_RETRIES = 1; |
| private static final int FAILOVER_CONNECTDELAY = 1000; |
| private int[] _brokerPorts; |
| private AMQConnectionURL _connectionURL; |
| private Connection _connection; |
| private CountDownLatch _failoverComplete; |
| private CountDownLatch _failoverStarted; |
| private Session _consumerSession; |
| private Destination _destination; |
| private MessageConsumer _consumer; |
| private Session _producerSession; |
| private MessageProducer _producer; |
| |
| @Override |
| protected void setUp() throws Exception |
| { |
| super.setUp(); |
| |
| int numBrokers = 4; |
| int port = findFreePort(); |
| _brokerPorts = new int[numBrokers]; |
| |
| // we need to create 4 brokers: |
| // 1st broker will be running in test JVM and will not have failover host (only tcp connection will established, amqp connection will be closed) |
| // 2d broker will be spawn in separate JVM and should have a failover host (amqp connection should be established) |
| // 3d broker will be spawn in separate JVM and should not have a failover host (only tcp connection will established, amqp connection will be closed) |
| // 4d broker will be spawn in separate JVM and should have a failover host (amqp connection should be established) |
| |
| // the test should connect to the second broker first and fail over to the forth broker |
| // after unsuccessful try to establish the connection to the 3d broker |
| for (int i = 0; i < numBrokers; i++) |
| { |
| if (i > 0) |
| { |
| port = getNextAvailable(port + 1); |
| } |
| _brokerPorts[i] = port; |
| |
| createBrokerConfiguration(port); |
| String host = null; |
| if (i == 1 || i == _brokerPorts.length - 1) |
| { |
| host = FAILOVER_VIRTUAL_HOST; |
| } |
| else |
| { |
| host = NON_FAILOVER_VIRTUAL_HOST; |
| } |
| createTestVirtualHost(port, host); |
| |
| startBroker(port); |
| revertSystemProperties(); |
| } |
| |
| _connectionURL = new AMQConnectionURL(generateUrlString(numBrokers)); |
| |
| _connection = getConnection(_connectionURL); |
| ((AMQConnection) _connection).setConnectionListener(this); |
| _failoverComplete = new CountDownLatch(1); |
| _failoverStarted = new CountDownLatch(1); |
| } |
| |
| public void startBroker() throws Exception |
| { |
| // noop, prevent the broker startup in super.setUp() |
| } |
| |
| private String generateUrlString(int numBrokers) |
| { |
| String baseString = "amqp://guest:guest@test/" + FAILOVER_VIRTUAL_HOST |
| + "?&failover='roundrobin?cyclecount='1''&brokerlist='"; |
| StringBuffer buffer = new StringBuffer(baseString); |
| |
| for(int i = 0; i< numBrokers ; i++) |
| { |
| if(i != 0) |
| { |
| buffer.append(";"); |
| } |
| |
| String broker = String.format(BROKER_PORTION_FORMAT, _brokerPorts[i], |
| FAILOVER_CONNECTDELAY, FAILOVER_RETRIES); |
| buffer.append(broker); |
| } |
| buffer.append("'"); |
| |
| return buffer.toString(); |
| } |
| |
| public void tearDown() throws Exception |
| { |
| try |
| { |
| super.tearDown(); |
| } |
| finally |
| { |
| for (int i = 0; i < _brokerPorts.length; i++) |
| { |
| if (_brokerPorts[i] > 0) |
| { |
| stopBrokerSafely(_brokerPorts[i]); |
| FileUtils.deleteDirectory(System.getProperty("QPID_WORK") + "/" + getFailingPort()); |
| } |
| } |
| |
| } |
| } |
| |
| |
| public void testFailoverOnBrokerKill() throws Exception |
| { |
| init(Session.SESSION_TRANSACTED, true); |
| assertConnectionPort(_brokerPorts[1]); |
| |
| assertSendReceive(0); |
| |
| killBroker(_brokerPorts[1]); |
| |
| awaitForFailoverCompletion(FAILOVER_CONNECTDELAY * _brokerPorts.length * 2); |
| assertEquals("Failover is not started as expected", 0, _failoverStarted.getCount()); |
| |
| assertSendReceive(2); |
| assertConnectionPort(_brokerPorts[_brokerPorts.length - 1]); |
| } |
| |
| public void testFailoverOnBrokerStop() throws Exception |
| { |
| init(Session.SESSION_TRANSACTED, true); |
| assertConnectionPort(_brokerPorts[1]); |
| |
| assertSendReceive(0); |
| |
| stopBroker(_brokerPorts[1]); |
| |
| awaitForFailoverCompletion(FAILOVER_CONNECTDELAY * _brokerPorts.length * 2); |
| assertEquals("Failover is not started as expected", 0, _failoverStarted.getCount()); |
| |
| assertSendReceive(1); |
| assertConnectionPort(_brokerPorts[_brokerPorts.length - 1]); |
| } |
| |
| private void assertConnectionPort(int brokerPort) |
| { |
| int connectionPort = ((AMQConnection)_connection).getActiveBrokerDetails().getPort(); |
| assertEquals("Unexpected broker port", brokerPort, connectionPort); |
| } |
| |
| private void assertSendReceive(int index) throws JMSException |
| { |
| Message message = createNextMessage(_producerSession, index); |
| _producer.send(message); |
| if (_producerSession.getTransacted()) |
| { |
| _producerSession.commit(); |
| } |
| Message receivedMessage = _consumer.receive(1000l); |
| assertReceivedMessage(receivedMessage, index); |
| if (_consumerSession.getTransacted()) |
| { |
| _consumerSession.commit(); |
| } |
| } |
| |
| private void awaitForFailoverCompletion(long delay) |
| { |
| _logger.info("Awaiting Failover completion.."); |
| try |
| { |
| if (!_failoverComplete.await(delay, TimeUnit.MILLISECONDS)) |
| { |
| _logger.warn("Test thread stack:\n\n" + TestUtils.dumpThreads()); |
| fail("Failover did not complete"); |
| } |
| } |
| catch (InterruptedException e) |
| { |
| fail("Test was interrupted:" + e.getMessage()); |
| } |
| } |
| |
| private void assertReceivedMessage(Message receivedMessage, int messageIndex) |
| { |
| assertNotNull("Expected message [" + messageIndex + "] is not received!", receivedMessage); |
| assertTrue( |
| "Failure to receive message [" + messageIndex + "], expected TextMessage but received " + receivedMessage, |
| receivedMessage instanceof TextMessage); |
| } |
| |
| private void init(int acknowledgeMode, boolean startConnection) throws JMSException |
| { |
| boolean isTransacted = acknowledgeMode == Session.SESSION_TRANSACTED ? true : false; |
| |
| _consumerSession = _connection.createSession(isTransacted, acknowledgeMode); |
| _destination = _consumerSession.createQueue(getTestQueueName()); |
| _consumer = _consumerSession.createConsumer(_destination); |
| |
| if (startConnection) |
| { |
| _connection.start(); |
| } |
| |
| _producerSession = _connection.createSession(isTransacted, acknowledgeMode); |
| _producer = _producerSession.createProducer(_destination); |
| |
| } |
| |
| @Override |
| public void bytesSent(long count) |
| { |
| } |
| |
| @Override |
| public void bytesReceived(long count) |
| { |
| } |
| |
| @Override |
| public boolean preFailover(boolean redirect) |
| { |
| _failoverStarted.countDown(); |
| return true; |
| } |
| |
| @Override |
| public boolean preResubscribe() |
| { |
| return true; |
| } |
| |
| @Override |
| public void failoverComplete() |
| { |
| _failoverComplete.countDown(); |
| } |
| } |