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ActiveMQ example source code file (CreateTemporaryQueueBeforeStartTest.java)
The ActiveMQ CreateTemporaryQueueBeforeStartTest.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.usecases; import java.util.concurrent.atomic.AtomicInteger; import javax.jms.Connection; import javax.jms.Queue; import javax.jms.QueueConnection; import javax.jms.QueueReceiver; import javax.jms.QueueSender; import javax.jms.QueueSession; import javax.jms.Session; import javax.jms.Topic; import junit.framework.TestCase; import org.apache.activemq.ActiveMQConnectionFactory; import org.apache.activemq.broker.BrokerService; /** * @author Peter Henning * */ public class CreateTemporaryQueueBeforeStartTest extends TestCase { protected String bindAddress = "tcp://localhost:61621"; private Connection connection; private BrokerService broker = new BrokerService(); public void testCreateTemporaryQueue() throws Exception { connection = createConnection(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); Queue queue = session.createTemporaryQueue(); assertTrue("No queue created!", queue != null); Topic topic = session.createTemporaryTopic(); assertTrue("No topic created!", topic != null); } public void testTryToReproduceNullPointerBug() throws Exception { String url = bindAddress; ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(url); QueueConnection queueConnection = factory.createQueueConnection(); this.connection = queueConnection; QueueSession session = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); session.createSender(null); // Unidentified Queue receiverQueue = session.createTemporaryQueue(); session.createReceiver(receiverQueue); queueConnection.start(); } public void testTemporaryQueueConsumer() throws Exception { final int number = 20; final AtomicInteger count = new AtomicInteger(0); for (int i = 0; i < number; i++) { Thread thread = new Thread(new Runnable() { public void run() { try { QueueConnection connection = createConnection(); QueueSession session = connection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); Queue queue = session.createTemporaryQueue(); session.createReceiver(queue); connection.start(); if (count.incrementAndGet() >= number) { synchronized (count) { count.notify(); } } } catch (Exception ex) { ex.printStackTrace(); } } }); thread.start(); } int maxWaitTime = 20000; synchronized (count) { long waitTime = maxWaitTime; long start = System.currentTimeMillis(); while (count.get() < number) { if (waitTime <= 0) { break; } else { count.wait(waitTime); waitTime = maxWaitTime - (System.currentTimeMillis() - start); } } } assertTrue("Unexpected count: " + count, count.get() == number); } protected QueueConnection createConnection() throws Exception { ActiveMQConnectionFactory factory = createConnectionFactory(); return factory.createQueueConnection(); } protected ActiveMQConnectionFactory createConnectionFactory() throws Exception { return new ActiveMQConnectionFactory(bindAddress); } protected void setUp() throws Exception { broker.setPersistent(false); broker.addConnector(bindAddress); broker.start(); super.setUp(); } protected void tearDown() throws Exception { if (connection != null) { connection.close(); } broker.stop(); super.tearDown(); } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ CreateTemporaryQueueBeforeStartTest.java source code file: |
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