ActiveMQ example source code file (AMQ2401Test.java)

This example ActiveMQ source code file (AMQ2401Test.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

amq2401test, brokerservice, exception, exception, io, jmsexception, log_interval, producer_count, producer_count, send_count, service, testconsumer, testconsumer, testproducer, testproducer, threading, threads, util

The ActiveMQ AMQ2401Test.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.io.File;
import java.util.ArrayList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import javax.jms.BytesMessage;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.apache.activemq.broker.region.policy.VMPendingQueueMessageStoragePolicy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import junit.framework.TestCase;

/**
 * An AMQ-2401 Test
 *
 */
public class AMQ2401Test extends TestCase implements MessageListener{
    BrokerService broker;
    private ActiveMQConnectionFactory factory;
    private static final int SEND_COUNT = 500;
    private static final int CONSUMER_COUNT = 50;
    private static final int PRODUCER_COUNT = 1;
    private static final int LOG_INTERVAL = 10;

    private static final Logger LOG = LoggerFactory.getLogger(AMQ2401Test.class);

    private ArrayList<Service> services = new ArrayList(CONSUMER_COUNT + PRODUCER_COUNT);
    int count = 0;
    CountDownLatch latch;

    protected void setUp() throws Exception {
        broker = new BrokerService();
        broker.setDataDirectory("target" + File.separator + "test-data" + File.separator + "AMQ2401Test");
        broker.setDeleteAllMessagesOnStartup(true);
        broker.addConnector("tcp://0.0.0.0:2401");
        PolicyMap policies = new PolicyMap();
        PolicyEntry entry = new PolicyEntry();
        entry.setMemoryLimit(1024 * 100);
        entry.setProducerFlowControl(true);
        entry.setPendingQueuePolicy(new VMPendingQueueMessageStoragePolicy());
        entry.setQueue(">");
        policies.setDefaultEntry(entry);
        broker.setDestinationPolicy(policies);
        broker.start();
        broker.waitUntilStarted();

        factory = new ActiveMQConnectionFactory("tcp://0.0.0.0:2401");
        super.setUp();
    }

    protected void tearDown() throws Exception {
        broker.stop();
    }

    public void testDupsOk() throws Exception {

        TestProducer p = null;
        TestConsumer c = null;
        try {

            latch = new CountDownLatch(SEND_COUNT);

            for(int i = 0; i < CONSUMER_COUNT; i++)
            {
                TestConsumer consumer = new TestConsumer();
                consumer.start();
                services.add(consumer);
            }
            for(int i = 0; i < PRODUCER_COUNT; i++)
            {
                TestProducer producer = new TestProducer();
                producer.start();
                services.add(producer);
            }
            waitForMessageReceipt(TimeUnit.SECONDS.toMillis(30));

        } finally {
            if (p != null) {
                p.close();
            }

            if (c != null) {
                c.close();
            }
        }

    }

    /*
     * (non-Javadoc)
     *
     * @see javax.jms.MessageListener#onMessage(javax.jms.Message)
     */
    public void onMessage(Message message) {
        latch.countDown();
        if (++count % LOG_INTERVAL == 0) {
            LOG.debug("Received message " + count);
        }
        try {
            Thread.sleep(1);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }

    }

    /**
     * @throws InterruptedException
     * @throws TimeoutException
     *
     */
    private void waitForMessageReceipt(long timeout) throws InterruptedException, TimeoutException {
        if (!latch.await(timeout, TimeUnit.MILLISECONDS)) {
            throw new TimeoutException(String.format(
                "Consumner didn't receive expected # of messages, %d of %d received.",
                latch.getCount(), SEND_COUNT ));
        }
    }

    private interface Service {
        public void start() throws Exception;

        public void close();
    }

    private class TestProducer implements Runnable, Service {
        Thread thread;
        BytesMessage message;

        Connection connection;
        Session session;
        MessageProducer producer;

        TestProducer() throws Exception {
            thread = new Thread(this, "TestProducer");
            connection = factory.createConnection();
            connection.start();
            session = connection.createSession(false, Session.DUPS_OK_ACKNOWLEDGE);
            producer = session.createProducer(session.createQueue("AMQ2401Test"));

        }

        public void start() {
            thread.start();
        }

        public void run() {

            int count = SEND_COUNT / PRODUCER_COUNT;
            for (int i = 1; i <= count; i++) {
                try {
                    if( (i% LOG_INTERVAL)==0 ) {
                        LOG.debug("Sending: " + i);
                    }
                    message = session.createBytesMessage();
                    message.writeBytes(new byte[1024]);
                    producer.send(message);
                } catch (JMSException jmse) {
                    jmse.printStackTrace();
                    break;
                }
            }
        }

        public void close() {
            try {
                connection.close();
            } catch (JMSException e) {
            }
        }
    }

    private class TestConsumer implements Runnable, Service {
        ActiveMQConnection connection;
        Session session;
        MessageConsumer consumer;

        TestConsumer() throws Exception {
            factory.setOptimizeAcknowledge(false);
            connection = (ActiveMQConnection) factory.createConnection();

            session = connection.createSession(false, Session.DUPS_OK_ACKNOWLEDGE);
            consumer = session.createConsumer(session.createQueue("AMQ2401Test"));

            consumer.setMessageListener(AMQ2401Test.this);
        }

        public void start() throws Exception {
            connection.start();
        }

        public void close() {
            try {
                connection.close();
            } catch (JMSException e) {
            }
        }

        /*
         * (non-Javadoc)
         *
         * @see java.lang.Runnable#run()
         */
        public void run() {
            while (latch.getCount() > 0) {
                try {
                    onMessage(consumer.receive());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }
}