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ActiveMQ example source code file (ConsumeUncompressedCompressedMessageTest.java)

This example ActiveMQ source code file (ConsumeUncompressedCompressedMessageTest.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

brokerservice, compositedata, exception, exception, management, message, message, messageconsumer, net, network, queueviewmbean, received, test, text, text, textmessage, textmessage

The ActiveMQ ConsumeUncompressedCompressedMessageTest.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 static org.junit.Assert.*;

import java.net.URI;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeData;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.broker.jmx.QueueViewMBean;
import org.apache.activemq.command.ActiveMQMessage;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ConsumeUncompressedCompressedMessageTest {

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

    private BrokerService broker;
    private URI tcpUri;

    ActiveMQConnectionFactory factory;
    ActiveMQConnection connection;
    Session session;
    Queue queue;

    @Before
    public void setUp() throws Exception {
        broker = createBroker();
        broker.start();
        broker.waitUntilStarted();

        factory = new ActiveMQConnectionFactory(tcpUri);
        factory.setUseCompression(true);

        connection = (ActiveMQConnection) factory.createConnection();
        connection.start();
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        queue = session.createQueue("CompressionTestQueue");
    }

    @After
    public void tearDown() throws Exception {

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

        broker.stop();
        broker.waitUntilStopped();
    }

    protected BrokerService createBroker() throws Exception {
        return createBroker(true);
    }

    protected BrokerService createBroker(boolean delete) throws Exception {
        BrokerService answer = new BrokerService();
        answer.setPersistent(false);
        answer.setDeleteAllMessagesOnStartup(true);
        answer.setSchedulerSupport(false);
        answer.setUseJmx(true);
        TransportConnector connector = answer.addConnector("tcp://localhost:0");
        tcpUri = connector.getConnectUri();
        return answer;
    }

    @Test
    public void testBrowseAndReceiveCompressedMessages() throws Exception {

        assertTrue(((ActiveMQConnection) connection).isUseCompression());

        createProducerAndSendMessages(1);

        QueueViewMBean queueView = getProxyToQueueViewMBean();

        assertNotNull(queueView);

        CompositeData[] compdatalist = queueView.browse();
        if (compdatalist.length == 0) {
            fail("There is no message in the queue:");
        }

        CompositeData cdata = compdatalist[0];

        assertComplexData(0, cdata, "Text", "Test Text Message: " + 0);

        assertMessageAreCorrect(1);
    }

    @Test
    public void testReceiveAndResendWithCompressionOff() throws Exception {

        assertTrue(connection.isUseCompression());

        createProducerAndSendMessages(1);

        MessageConsumer consumer = session.createConsumer(queue);
        TextMessage message = (TextMessage) consumer.receive(5000);

        assertTrue(((ActiveMQMessage) message).isCompressed());

        LOG.debug("Received Message with Text = " + message.getText());

        connection.setUseCompression(false);

        MessageProducer producer = session.createProducer(queue);
        producer.send(message);
        producer.close();

        message = (TextMessage) consumer.receive(5000);

        LOG.debug("Received Message with Text = " + message.getText());
    }

    protected void assertComplexData(int messageIndex, CompositeData cdata, String name, Object expected) {
        Object value = cdata.get(name);
        assertEquals("Message " + messageIndex + " CData field: " + name, expected, value);
    }

    private void createProducerAndSendMessages(int numToSend) throws Exception {
        session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
        MessageProducer producer = session.createProducer(queue);
        for (int i = 0; i < numToSend; i++) {
            TextMessage message = session.createTextMessage("Test Text Message: " + i);
            if (i  != 0 && i % 10000 == 0) {
                LOG.info("sent: " + i);
            }
            producer.send(message);
        }
        producer.close();
    }

    private QueueViewMBean getProxyToQueueViewMBean()
            throws MalformedObjectNameException, JMSException {
        ObjectName queueViewMBeanName = new ObjectName("org.apache.activemq"
                + ":Type=Queue,Destination=" + queue.getQueueName()
                + ",BrokerName=localhost");
        QueueViewMBean proxy = (QueueViewMBean) broker.getManagementContext()
                .newProxyInstance(queueViewMBeanName, QueueViewMBean.class,
                        true);
        return proxy;
    }

    private void assertMessageAreCorrect(int numToReceive) throws Exception {
        MessageConsumer consumer = session.createConsumer(queue);

        try{

            for (int i = 0; i < numToReceive; ++i) {
                TextMessage message = (TextMessage) consumer.receive(5000);
                assertNotNull(message);
                assertEquals("Test Text Message: " + i, message.getText());
            }

        } finally {
            consumer.close();
        }
    }
}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ ConsumeUncompressedCompressedMessageTest.java source code file:

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