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ActiveMQ example source code file (FailoverConsumerTest.java)
The ActiveMQ FailoverConsumerTest.java source code/** * 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.transport.failover; import java.net.URI; import javax.jms.Connection; import javax.jms.Message; import javax.jms.MessageConsumer; import javax.jms.MessageProducer; import javax.jms.Session; import org.apache.activemq.ActiveMQConnectionFactory; import org.apache.activemq.ActiveMQPrefetchPolicy; import org.apache.activemq.command.ActiveMQQueue; import org.apache.activemq.network.NetworkTestSupport; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class FailoverConsumerTest extends NetworkTestSupport { public static final int MSG_COUNT = 100; private static final Logger LOG = LoggerFactory.getLogger(FailoverConsumerTest.class); public void testPublisherFailsOver() throws Exception { // Uncomment this if you want to use remote broker created by // NetworkTestSupport. // But it doesn't work. See comments below. // URI failoverURI = new // URI("failover://"+remoteConnector.getServer().getConnectURI()); URI failoverURI = new URI("failover://tcp://localhost:61616"); ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(failoverURI); ActiveMQPrefetchPolicy prefetchPolicy = new ActiveMQPrefetchPolicy(); // Prefetch size must be less than messages in the queue!! prefetchPolicy.setQueuePrefetch(MSG_COUNT - 10); factory.setPrefetchPolicy(prefetchPolicy); Connection connection = factory.createConnection(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); MessageProducer producer = session.createProducer(new ActiveMQQueue("Test")); for (int idx = 0; idx < MSG_COUNT; ++idx) { producer.send(session.createTextMessage("Test")); } producer.close(); session.close(); int count = 0; Session consumerSession = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE); MessageConsumer consumer = consumerSession.createConsumer(new ActiveMQQueue("Test")); connection.start(); Message msg = consumer.receive(3000); // restartRemoteBroker() doesn't work (you won't get received any // messages // after restart, javadoc says, that messages should be received // though). // So we must use external broker ant restart it manually. LOG.info("You should restart remote broker now and press enter!"); System.in.read(); // Thread.sleep(20000); restartRemoteBroker(); msg.acknowledge(); ++count; for (int idx = 1; idx < MSG_COUNT; ++idx) { msg = consumer.receive(3000); if (msg == null) { LOG.error("No messages received! Received:" + count); break; } msg.acknowledge(); ++count; } assertEquals(count, MSG_COUNT); consumer.close(); consumerSession.close(); connection.close(); connection = factory.createConnection(); consumerSession = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE); consumer = consumerSession.createConsumer(new ActiveMQQueue("Test")); connection.start(); count = 0; do { msg = consumer.receive(1000); if (msg != null) { msg.acknowledge(); ++count; } } while (msg != null); assertEquals(count, 0); consumer.close(); consumerSession.close(); connection.close(); } protected String getRemoteURI() { return "tcp://localhost:55555"; } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ FailoverConsumerTest.java source code file: |
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