ActiveMQ example source code file (AMQ2764Test.java)

This example ActiveMQ source code file (AMQ2764Test.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

activemqconnectionfactory, activemqconnectionfactory, atomicinteger, atomicinteger, brokerservice, connection, connection, didn't, exception, exception, message, messageconsumer, net, network, session, threading, threads, throwable, util

The ActiveMQ AMQ2764Test.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.bugs;

import java.net.URI;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import javax.jms.*;

import junit.framework.TestCase;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.advisory.ConsumerEvent;
import org.apache.activemq.advisory.ConsumerEventSource;
import org.apache.activemq.advisory.ConsumerListener;
import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.transport.http.WaitForJettyListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AMQ2764Test extends TestCase {

    private static final Logger LOG = LoggerFactory.getLogger(AMQ2764Test.class);

    private BrokerService brokerOne;
    private BrokerService brokerTwo;
    private Destination destination;
    private ArrayList<Connection> connections = new ArrayList();

    public void testInactivityMonitor() throws Exception {

        startBrokerTwo();
        brokerTwo.waitUntilStarted();

        startBrokerOne();
        brokerOne.waitUntilStarted();

        Thread.sleep(2000);

        ActiveMQConnectionFactory secondProducerConnectionFactory = createBrokerTwoHttpConnectionFactory();
        ActiveMQConnectionFactory consumerConnectionFactory = createBrokerOneHttpConnectionFactory();

        MessageConsumer consumer = createConsumer(consumerConnectionFactory);
        AtomicInteger counter = createConsumerCounter(consumerConnectionFactory);
        waitForConsumerToArrive(counter);

        Connection connection = secondProducerConnectionFactory.createConnection();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer producer = session.createProducer(destination);
        producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);


        final int expectedMessagesReceived = 2000;

        for (int i = 0; i < expectedMessagesReceived; i++) {
            Message message = session.createMessage();
            producer.send(message);            
            LOG.info("sent message " + i);
        }

        for (int i = 0; i < expectedMessagesReceived; i++) {
            Message message = consumer.receive(2000);
            if (message == null) {
                fail("Didn't receive a message");
            }
            LOG.info("received message " + i);
        }


    }

    public void testBrokerRestart() throws Exception {

        startBrokerTwo();
        brokerTwo.waitUntilStarted();        

        startBrokerOne();
        brokerOne.waitUntilStarted();

        Thread.sleep(5000);

        ActiveMQConnectionFactory producerConnectionFactory = createBrokerOneConnectionFactory();
        ActiveMQConnectionFactory secondProducerConnectionFactory = createBrokerTwoConnectionFactory();
        ActiveMQConnectionFactory consumerConnectionFactory = createBrokerOneConnectionFactory();

        MessageConsumer consumer = createConsumer(consumerConnectionFactory);
        AtomicInteger counter = createConsumerCounter(consumerConnectionFactory);
        waitForConsumerToArrive(counter);

        final int expectedMessagesReceived = 25;
        int actualMessagesReceived = doSendMessage(expectedMessagesReceived, consumer, producerConnectionFactory);
        assertEquals("Didn't receive the right amount of messages directly connected", expectedMessagesReceived, actualMessagesReceived);
        assertNull( "Had extra messages", consumer.receiveNoWait());

        actualMessagesReceived = doSendMessage(expectedMessagesReceived, consumer, secondProducerConnectionFactory);
        assertEquals("Didn't receive the right amount of messages via network", expectedMessagesReceived, actualMessagesReceived);
        assertNull( "Had extra messages", consumer.receiveNoWait());

        LOG.info("Stopping broker one");
        stopBrokerOne();

        TimeUnit.SECONDS.sleep(1);
        LOG.info("Restarting broker");
        startBrokerOne();

        consumer = createConsumer(consumerConnectionFactory);
        counter = createConsumerCounter(consumerConnectionFactory);
        waitForConsumerToArrive(counter);

        actualMessagesReceived = doSendMessage(expectedMessagesReceived, consumer, secondProducerConnectionFactory);
        assertEquals("Didn't receive the right amount of messages via network after restart", expectedMessagesReceived, actualMessagesReceived);
        assertNull( "Had extra messages", consumer.receiveNoWait());

        stopBrokerOne();
        stopBrokerTwo();
    }

    protected int doSendMessage(int expectedMessagesReceived, MessageConsumer consumer, ActiveMQConnectionFactory connectionFactory) throws Exception {
        int messagesReceived = 0;
        for (int i=0; i<expectedMessagesReceived; i++) {
            String messageId = sendMessage(connectionFactory);
            Message message = consumer.receive(5000);
            if ( message!=null ) {
                messagesReceived++;
            }
        }
        return messagesReceived;
    }

    protected String sendMessage(ActiveMQConnectionFactory connectionFactory) throws JMSException {
        Connection connection = null;
        try {
            connection = connectionFactory.createConnection();
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            MessageProducer producer = session.createProducer(destination);
            Message message = session.createMessage();
            producer.send(message);
            return message.getJMSMessageID();
        } finally {
            try {
                connection.close();
            } catch (Throwable ignore) {
            }
        }
    }

    protected BrokerService createFirstBroker() throws Exception {
        return BrokerFactory.createBroker(new URI("xbean:org/apache/activemq/bugs/amq2764/reconnect-broker1.xml"));
    }

    protected BrokerService createSecondBroker() throws Exception {
        return BrokerFactory.createBroker(new URI("xbean:org/apache/activemq/bugs/amq2764/reconnect-broker2.xml"));
    }
    
    protected ActiveMQConnectionFactory createBrokerOneConnectionFactory() {
        return new ActiveMQConnectionFactory("vm://broker1");
    }

    protected ActiveMQConnectionFactory createBrokerTwoConnectionFactory() {
        return new ActiveMQConnectionFactory("vm://broker2");
    }

    protected ActiveMQConnectionFactory createBrokerOneHttpConnectionFactory() {
        return new ActiveMQConnectionFactory("http://localhost:61616");
    }

    protected ActiveMQConnectionFactory createBrokerTwoHttpConnectionFactory() {
        return new ActiveMQConnectionFactory("http://localhost:61617");
    }

    protected void setUp() throws Exception {

        LOG.info("===============================================================================");
        LOG.info("Running Test Case: " + getName());
        LOG.info("===============================================================================");

        destination = new ActiveMQQueue("RECONNECT.TEST.QUEUE");

    }

    protected void tearDown() throws Exception {
        disposeConsumerConnections();
        try {
            stopBrokerOne();
        } catch (Throwable e) {
        }
        try {
            stopBrokerTwo();
        } catch (Throwable e) {
        }
    }

    protected void disposeConsumerConnections() {
        for (Iterator<Connection> iter = connections.iterator(); iter.hasNext();) {
            Connection connection = iter.next();
            try {
                connection.close();
            } catch (Throwable ignore) {
            }
        }
    }

    protected void startBrokerOne() throws Exception {
        if (brokerOne == null) {
            brokerOne = createFirstBroker();
            brokerOne.start();
            brokerOne.waitUntilStarted();
            WaitForJettyListener.waitForJettySocketToAccept("http://localhost:61616");
        }
    }

    protected void stopBrokerOne() throws Exception {
        if (brokerOne != null) {
            brokerOne.stop();
            brokerOne = null;
        }
    }

    protected void startBrokerTwo() throws Exception {
        if (brokerTwo == null) {
            brokerTwo = createSecondBroker();
            brokerTwo.start();
            brokerTwo.waitUntilStarted();
            WaitForJettyListener.waitForJettySocketToAccept("http://localhost:61617");
        }
    }

    protected void stopBrokerTwo() throws Exception {
        if (brokerTwo != null) {
            brokerTwo.stop();
            brokerTwo = null;
        }
    }

    protected MessageConsumer createConsumer(ActiveMQConnectionFactory consumerConnectionFactory) throws JMSException {
        Connection connection = consumerConnectionFactory.createConnection();
        connections.add(connection);
        connection.start();

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        return session.createConsumer(destination);
    }

    protected AtomicInteger createConsumerCounter(ActiveMQConnectionFactory cf) throws Exception {
        final AtomicInteger rc = new AtomicInteger(0);
        Connection connection = cf.createConnection();
        connections.add(connection);
        connection.start();

        ConsumerEventSource source = new ConsumerEventSource(connection, destination);
        source.setConsumerListener(new ConsumerListener() {
            public void onConsumerEvent(ConsumerEvent event) {
                rc.set(event.getConsumerCount());
            }
        });
        source.start();

        return rc;
    }

    protected void waitForConsumerToArrive(AtomicInteger consumerCounter) throws InterruptedException {
        for (int i = 0; i < 100; i++) {
            if (consumerCounter.get() > 0) {
                return;
            }
            Thread.sleep(100);
        }
        fail("The consumer did not arrive.");
    }

    protected void waitForConsumerToLeave(AtomicInteger consumerCounter) throws InterruptedException {
        for (int i = 0; i < 100; i++) {
            if (consumerCounter.get() == 0) {
                return;
            }
            Thread.sleep(100);
        }
        fail("The consumer did not leave.");
    }

}