ActiveMQ example source code file (AMQ1730Test.java)

This example ActiveMQ source code file (AMQ1730Test.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

amq1730test, brokerservice, brokerservice, countdownlatch, exception, exception, message_count, override, string, t, textmessage, textmessage, threading, threads, valueholder, valueholder

The ActiveMQ AMQ1730Test.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.bugs;

import junit.framework.TestCase;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jms.listener.DefaultMessageListenerContainer;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import java.util.concurrent.CountDownLatch;


public class AMQ1730Test extends TestCase {

    private static final Logger log = LoggerFactory.getLogger(AMQ1730Test.class);


    private static final String JMSX_DELIVERY_COUNT = "JMSXDeliveryCount";


    BrokerService brokerService;

    private static final int MESSAGE_COUNT = 250;

    public AMQ1730Test() {
        super();
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        brokerService = new BrokerService();
        brokerService.addConnector("tcp://localhost:0");
        brokerService.setUseJmx(false);
        brokerService.start();
    }

    @Override
    protected void tearDown() throws Exception {
        super.tearDown();
        brokerService.stop();
    }

    public void testRedelivery() throws Exception {

        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
                brokerService.getTransportConnectors().get(0).getConnectUri().toString() + "?jms.prefetchPolicy.queuePrefetch=100");

        Connection connection = connectionFactory.createConnection();
        connection.start();

        Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
        Queue queue = session.createQueue("queue.test");

        MessageProducer producer = session.createProducer(queue);

        for (int i = 0; i < MESSAGE_COUNT; i++) {
            log.info("Sending message " + i);
            TextMessage message = session.createTextMessage("Message " + i);
            producer.send(message);
        }

        producer.close();
        session.close();
        connection.stop();
        connection.close();

        final CountDownLatch countDownLatch = new CountDownLatch(MESSAGE_COUNT);

        final ValueHolder<Boolean> messageRedelivered = new ValueHolder(false);

        DefaultMessageListenerContainer messageListenerContainer = new DefaultMessageListenerContainer();
        messageListenerContainer.setConnectionFactory(connectionFactory);
        messageListenerContainer.setDestination(queue);
        messageListenerContainer.setAutoStartup(false);
        messageListenerContainer.setConcurrentConsumers(1);
        messageListenerContainer.setMaxConcurrentConsumers(16);
        messageListenerContainer.setMaxMessagesPerTask(10);
        messageListenerContainer.setReceiveTimeout(10000);
        messageListenerContainer.setRecoveryInterval(5000);
        messageListenerContainer.setAcceptMessagesWhileStopping(false);
        messageListenerContainer.setCacheLevel(DefaultMessageListenerContainer.CACHE_NONE);
        messageListenerContainer.setSessionTransacted(false);
        messageListenerContainer.setMessageListener(new MessageListener() {


            public void onMessage(Message message) {
                if (!(message instanceof TextMessage)) {
                    throw new RuntimeException();
                }
                try {
                    TextMessage textMessage = (TextMessage) message;
                    String text = textMessage.getText();
                    int messageDeliveryCount = message.getIntProperty(JMSX_DELIVERY_COUNT);
                    if (messageDeliveryCount > 1) {
                        messageRedelivered.set(true);
                    }
                    log.info("[Count down latch: " + countDownLatch.getCount() + "][delivery count: " + messageDeliveryCount + "] - " + "Received message with id: " + message.getJMSMessageID() + " with text: " + text);

                } catch (JMSException e) {
                    e.printStackTrace();
                }
                finally {
                    countDownLatch.countDown();
                }
            }

        });
        messageListenerContainer.afterPropertiesSet();

        messageListenerContainer.start();

        countDownLatch.await();
        messageListenerContainer.stop();
        messageListenerContainer.destroy();

        assertFalse("no message has redelivery > 1", messageRedelivered.get());
    }

    private class ValueHolder<T> {

        private T value;

        public ValueHolder(T value) {
            super();
            this.value = value;
        }

        void set(T value) {
            this.value = value;
        }

        T get() {
            return value;
        }

    }

}