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ActiveMQ example source code file (TopicReplicationTest.java)

This example ActiveMQ source code file (TopicReplicationTest.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

classpathresource, classpathresource, destination, exception, jmsmultiplebrokerstestsupport, messageconsumer, messageconsumer, messageidlist, messageidlist, msg_count, msg_count, topicreplicationtest

The ActiveMQ TopicReplicationTest.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 org.apache.activemq.JmsMultipleBrokersTestSupport;
import org.apache.activemq.util.MessageIdList;
import org.springframework.core.io.ClassPathResource;

import javax.jms.Destination;
import javax.jms.MessageConsumer;

public class TopicReplicationTest extends JmsMultipleBrokersTestSupport {

    public static final int MSG_COUNT = 10;

    public void testReplication() throws Exception {
        createBroker(new ClassPathResource("org/apache/activemq/usecases/replication-broker1.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/replication-broker2.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/replication-broker3.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/replication-broker4.xml"));

        brokers.get("replication-broker1").broker.waitUntilStarted();
        brokers.get("replication-broker2").broker.waitUntilStarted();
        brokers.get("replication-broker3").broker.waitUntilStarted();
        brokers.get("replication-broker4").broker.waitUntilStarted();

        Destination dest = createDestination("replication", true);

        // Setup consumers
        MessageConsumer clientA = createConsumer("replication-broker2", dest);
        MessageConsumer clientB = createConsumer("replication-broker3", dest);
        MessageConsumer clientC = createConsumer("replication-broker4", dest);
        MessageConsumer clientD = createConsumer("replication-broker4", dest);

        //let consumers propogate around the network
        Thread.sleep(2000);

        // Get message count
        MessageIdList msgsA = getConsumerMessages("replication-broker2", clientA);
        MessageIdList msgsB = getConsumerMessages("replication-broker3", clientB);
        MessageIdList msgsC = getConsumerMessages("replication-broker4", clientC);
        MessageIdList msgsD = getConsumerMessages("replication-broker4", clientD);



        // send messages to broker1
        sendMessages("replication-broker1", dest, MSG_COUNT);


        msgsA.waitForMessagesToArrive(MSG_COUNT);
        msgsB.waitForMessagesToArrive(MSG_COUNT);
        msgsC.waitForMessagesToArrive(MSG_COUNT);
        msgsD.waitForMessagesToArrive(MSG_COUNT);

        assertEquals(MSG_COUNT, msgsA.getMessageCount());
        assertEquals(MSG_COUNT, msgsB.getMessageCount());
        assertEquals(MSG_COUNT, msgsC.getMessageCount());
        assertEquals(MSG_COUNT, msgsD.getMessageCount());

        // send messages to broker4
        sendMessages("replication-broker4", dest, MSG_COUNT);

        msgsA.waitForMessagesToArrive(2 * MSG_COUNT);
        msgsB.waitForMessagesToArrive(2 * MSG_COUNT);
        msgsC.waitForMessagesToArrive(2 * MSG_COUNT);
        msgsD.waitForMessagesToArrive(2 * MSG_COUNT);

        assertEquals(2 * MSG_COUNT, msgsA.getMessageCount());
        assertEquals(2 * MSG_COUNT, msgsB.getMessageCount());
        assertEquals(2 * MSG_COUNT, msgsC.getMessageCount());
        assertEquals(2 * MSG_COUNT, msgsD.getMessageCount());

        // send messages to broker3
        sendMessages("replication-broker3", dest, MSG_COUNT);

        msgsA.waitForMessagesToArrive(3 * MSG_COUNT);
        msgsB.waitForMessagesToArrive(3 * MSG_COUNT);
        msgsC.waitForMessagesToArrive(3 * MSG_COUNT);
        msgsD.waitForMessagesToArrive(3 * MSG_COUNT);

        assertEquals(3 * MSG_COUNT, msgsA.getMessageCount());
        assertEquals(3 * MSG_COUNT, msgsB.getMessageCount());
        assertEquals(3 * MSG_COUNT, msgsC.getMessageCount());
        assertEquals(3 * MSG_COUNT, msgsD.getMessageCount());

        // send messages to broker2
        sendMessages("replication-broker2", dest, MSG_COUNT);

        msgsA.waitForMessagesToArrive(4 * MSG_COUNT);
        msgsB.waitForMessagesToArrive(4 * MSG_COUNT);
        msgsC.waitForMessagesToArrive(4 * MSG_COUNT);
        msgsD.waitForMessagesToArrive(4 * MSG_COUNT);

        assertEquals(4 * MSG_COUNT, msgsA.getMessageCount());
        assertEquals(4 * MSG_COUNT, msgsB.getMessageCount());
        assertEquals(4 * MSG_COUNT, msgsC.getMessageCount());
        assertEquals(4 * MSG_COUNT, msgsD.getMessageCount());

    }


}

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