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ActiveMQ example source code file (AMQ2584Test.java)

This example ActiveMQ source code file (AMQ2584Test.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

activemqconnection, activemqconnection, activemqtopic, brokerservice, countdownlatch, countdownlatch, exception, exception, messagelistener, override, properties, session, session, string, threading, threads, util

The ActiveMQ AMQ2584Test.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.util.Properties;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
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 junit.framework.Test;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.jmx.BrokerView;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.util.IntrospectionSupport;
import org.apache.activemq.util.Wait;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AMQ2584Test extends org.apache.activemq.TestSupport {

    static final Logger LOG = LoggerFactory.getLogger(AMQ2584Test.class);
    BrokerService broker = null;
    ActiveMQTopic topic;

    ActiveMQConnection consumerConnection = null, producerConnection = null;
    Session producerSession;
    MessageProducer producer;
    final int minPercentUsageForStore = 10;
    String data;

    public static Test suite() {
        return suite(AMQ2584Test.class);
    }

    public void initCombosForTestSize() throws Exception {
        this.addCombinationValues("defaultPersistenceAdapter",
                new Object[]{
                        PersistenceAdapterChoice.AMQ,
                        PersistenceAdapterChoice.KahaDB
                });
    }

    public void testSize() throws Exception {
        CountDownLatch redeliveryConsumerLatch = new CountDownLatch(15000 -1);
        openConsumer(redeliveryConsumerLatch);

        assertEquals(0, broker.getAdminView().getStorePercentUsage());

        for (int i = 0; i < 5000; i++) {
            sendMessage(false);
        }

        final BrokerView brokerView = broker.getAdminView();

        broker.getSystemUsage().getStoreUsage().isFull();
        LOG.info("store percent usage: "+brokerView.getStorePercentUsage());
        assertTrue("some store in use", broker.getAdminView().getStorePercentUsage() > minPercentUsageForStore);

        assertTrue("redelivery consumer got all it needs", redeliveryConsumerLatch.await(60, TimeUnit.SECONDS));
        closeConsumer();

        // consume from DLQ
        final CountDownLatch received = new CountDownLatch(5000 -1);
        consumerConnection = (ActiveMQConnection) createConnection();
        Session dlqSession = consumerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageConsumer dlqConsumer = dlqSession.createConsumer(new ActiveMQQueue("ActiveMQ.DLQ"));
        dlqConsumer.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
                if (received.getCount() % 500 == 0) {
                    LOG.info("remaining on DLQ: " + received.getCount());
                }
                received.countDown();
            }
        });
        consumerConnection.start();

        assertTrue("Not all messages reached the DLQ", received.await(60, TimeUnit.SECONDS));

        assertTrue("Store usage exceeds expected usage",
                Wait.waitFor(new Wait.Condition() {
                    public boolean isSatisified() throws Exception {
                        broker.getSystemUsage().getStoreUsage().isFull();
                        LOG.info("store precent usage: "+brokerView.getStorePercentUsage());
                        return broker.getAdminView().getStorePercentUsage() < minPercentUsageForStore;
                    }
                }));

         closeConsumer();

    }

    private void openConsumer(final CountDownLatch latch) throws Exception {
        consumerConnection = (ActiveMQConnection) createConnection();
        consumerConnection.setClientID("cliID");
        consumerConnection.start();
        final Session session = consumerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);

        MessageListener listener = new MessageListener() {
            public void onMessage(Message message) {
                latch.countDown();
                try {
                    session.recover();
                } catch (Exception ignored) {
                    ignored.printStackTrace();
                }

            }
        };

        session.createDurableSubscriber(topic, "subName1").setMessageListener(listener);
        session.createDurableSubscriber(topic, "subName2").setMessageListener(listener);
        session.createDurableSubscriber(topic, "subName3").setMessageListener(listener);
    }

    private void closeConsumer() throws JMSException {
        if (consumerConnection != null)
            consumerConnection.close();
        consumerConnection = null;
    }

    private void sendMessage(boolean filter) throws Exception {
        if (producerConnection == null) {
            producerConnection = (ActiveMQConnection) createConnection();
            producerConnection.start();
            producerSession = producerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            producer = producerSession.createProducer(topic);
        }

        Message message = producerSession.createMessage();
        message.setStringProperty("data", data);
        producer.send(message);
    }

    private void startBroker(boolean deleteMessages) throws Exception {
        broker = new BrokerService();
        broker.setAdvisorySupport(false);
        broker.setBrokerName("testStoreSize");

        if (deleteMessages) {
            broker.setDeleteAllMessagesOnStartup(true);
        }
        setDefaultPersistenceAdapter(broker);
        configurePersistenceAdapter(broker.getPersistenceAdapter());
        broker.getSystemUsage().getStoreUsage().setLimit(200 * 1000 * 1000);
        broker.start();
    }

    private void configurePersistenceAdapter(PersistenceAdapter persistenceAdapter) {
        Properties properties = new Properties();
        String maxFileLengthVal = String.valueOf(1 * 1024 * 1024);
        properties.put("journalMaxFileLength", maxFileLengthVal);
        properties.put("maxFileLength", maxFileLengthVal);
        properties.put("cleanupInterval", "2000");
        properties.put("checkpointInterval", "2000");

        IntrospectionSupport.setProperties(persistenceAdapter, properties);
    }

    private void stopBroker() throws Exception {
        if (broker != null)
            broker.stop();
        broker = null;
    }

    protected ActiveMQConnectionFactory createConnectionFactory() throws Exception {
        return new ActiveMQConnectionFactory("vm://testStoreSize?jms.watchTopicAdvisories=false&jms.redeliveryPolicy.maximumRedeliveries=0&waitForStart=5000&create=false");
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        StringBuilder sb = new StringBuilder(5000);
        for (int i = 0; i < 5000; i++) {
            sb.append('a');
        }
        data = sb.toString();

        startBroker(true);
        topic = (ActiveMQTopic) createDestination();
    }

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

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