ActiveMQ example source code file (ThreeBrokerVirtualTopicNetworkTest.java)

This example ActiveMQ source code file (ThreeBrokerVirtualTopicNetworkTest.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

brokera, brokera, brokerb, brokerb, brokerc, brokerc, brokerservice, exception, file, io, messageconsumer, messageidlist, net, network, string, uri, uri

The ActiveMQ ThreeBrokerVirtualTopicNetworkTest.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 java.io.File;
import java.io.IOException;
import java.net.URI;

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

import org.apache.activemq.JmsMultipleBrokersTestSupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.region.DestinationInterceptor;
import org.apache.activemq.broker.region.virtual.VirtualDestination;
import org.apache.activemq.broker.region.virtual.VirtualDestinationInterceptor;
import org.apache.activemq.broker.region.virtual.VirtualTopic;
import org.apache.activemq.network.NetworkConnector;
import org.apache.activemq.store.kahadb.KahaDBStore;
import org.apache.activemq.util.MessageIdList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class ThreeBrokerVirtualTopicNetworkTest extends JmsMultipleBrokersTestSupport {
    private static final Logger LOG = LoggerFactory.getLogger(ThreeBrokerVirtualTopicNetworkTest.class);
    protected static final int MESSAGE_COUNT = 1;
    public boolean dynamicOnly = false;

    
    public void testNetworkVirtualTopic() throws Exception {
        int networkTTL = 6;
        boolean conduitSubs = true;
        // Setup broker networks
        bridgeAndConfigureBrokers("BrokerA", "BrokerB", dynamicOnly, networkTTL, conduitSubs);
        bridgeAndConfigureBrokers("BrokerA", "BrokerC", dynamicOnly, networkTTL, conduitSubs);
        bridgeAndConfigureBrokers("BrokerB", "BrokerA", dynamicOnly, networkTTL, conduitSubs);
        bridgeAndConfigureBrokers("BrokerB", "BrokerC", dynamicOnly, networkTTL, conduitSubs);
        bridgeAndConfigureBrokers("BrokerC", "BrokerA", dynamicOnly, networkTTL, conduitSubs);
        bridgeAndConfigureBrokers("BrokerC", "BrokerB", dynamicOnly, networkTTL, conduitSubs);

        startAllBrokers();      
        waitForBridgeFormation();
        
        // Setup destination
        Destination dest = createDestination("TEST.FOO", true);

        // Setup consumers
        MessageConsumer clientA = createConsumer("BrokerA", createDestination("Consumer.A.TEST.FOO", false));
        MessageConsumer clientB = createConsumer("BrokerB", createDestination("Consumer.B.TEST.FOO", false));
        MessageConsumer clientC = createConsumer("BrokerC", createDestination("Consumer.C.TEST.FOO", false));
        
        Thread.sleep(2000);

        // Send messages
        sendMessages("BrokerA", dest, 1);

        // Get message count
        MessageIdList msgsA = getConsumerMessages("BrokerA", clientA);
        MessageIdList msgsB = getConsumerMessages("BrokerB", clientB);
        MessageIdList msgsC = getConsumerMessages("BrokerC", clientC);

        msgsA.waitForMessagesToArrive(1);
        msgsB.waitForMessagesToArrive(1);
        msgsC.waitForMessagesToArrive(1);

        // ensure we don't get any more messages
        Thread.sleep(2000);
        
        assertEquals(1, msgsA.getMessageCount());
        assertEquals(1, msgsB.getMessageCount());
        assertEquals(1, msgsC.getMessageCount());
        
        // restart to ensure no hanging messages
        LOG.info("Restarting brokerA");
        BrokerItem brokerItem = brokers.remove("BrokerA");
        if (brokerItem != null) {
            brokerItem.destroy();
        }
        
        BrokerService restartedBroker = createAndConfigureBroker(new URI("broker:(tcp://localhost:61616)/BrokerA?useJmx=false"));
        bridgeAndConfigureBrokers("BrokerA", "BrokerB", dynamicOnly, networkTTL, conduitSubs);
        bridgeAndConfigureBrokers("BrokerA", "BrokerC", dynamicOnly, networkTTL, conduitSubs);
        restartedBroker.start();
        waitForBridgeFormation();
        
        clientA = createConsumer("BrokerA", createDestination("Consumer.A.TEST.FOO", false));
        LOG.info("recreated clientA");
        
        Thread.sleep(2000);

        sendMessages("BrokerA", dest, 10);

        msgsA = getConsumerMessages("BrokerA", clientA);

        msgsA.waitForMessagesToArrive(10);
        msgsB.waitForMessagesToArrive(11);
        msgsC.waitForMessagesToArrive(11);

        // ensure we don't get any more messages
        Thread.sleep(2000);
        
        LOG.info("MessagesA: " + msgsA.getMessageIds());
        assertEquals(10, msgsA.getMessageCount());
        assertEquals(11, msgsB.getMessageCount());
        assertEquals(11, msgsC.getMessageCount());        
        
        // restart to ensure no hanging messages
        LOG.info("Restarting brokerA again");
        brokerItem = brokers.remove("BrokerA");
        if (brokerItem != null) {
            brokerItem.destroy();
        }
        
        restartedBroker = createAndConfigureBroker(new URI("broker:(tcp://localhost:61616)/BrokerA?useJmx=false"));
        bridgeAndConfigureBrokers("BrokerA", "BrokerB", dynamicOnly, networkTTL, conduitSubs);
        bridgeAndConfigureBrokers("BrokerA", "BrokerC", dynamicOnly, networkTTL, conduitSubs);
        restartedBroker.start();
        waitForBridgeFormation();
        
        clientA = createConsumer("BrokerA", createDestination("Consumer.A.TEST.FOO", false));
        LOG.info("recreated clientA again");
        
        Thread.sleep(2000);

        msgsA = getConsumerMessages("BrokerA", clientA);

        // ensure we don't get any more messages
        Thread.sleep(5000);
        
        LOG.info("Extra MessagesA: " + msgsA.getMessageIds());
        assertEquals(0, msgsA.getMessageCount());
        assertEquals(11, msgsB.getMessageCount());
        assertEquals(11, msgsC.getMessageCount());
    }
    

    private void bridgeAndConfigureBrokers(String local, String remote, boolean dynamicOnly, int networkTTL, boolean conduitSubs) throws Exception {
        NetworkConnector bridge = bridgeBrokers(local, remote, dynamicOnly, networkTTL, conduitSubs);
        bridge.setDecreaseNetworkConsumerPriority(true);
    }

    public void setUp() throws Exception {
        super.setAutoFail(true);
        super.setUp();
        String options = new String("?useJmx=false&deleteAllMessagesOnStartup=true"); 
        createAndConfigureBroker(new URI("broker:(tcp://localhost:61616)/BrokerA" + options));
        createAndConfigureBroker(new URI("broker:(tcp://localhost:61617)/BrokerB" + options));
        createAndConfigureBroker(new URI("broker:(tcp://localhost:61618)/BrokerC" + options));
    }
    
    private BrokerService createAndConfigureBroker(URI uri) throws Exception {
        BrokerService broker = createBroker(uri);
        
        configurePersistenceAdapter(broker);
        
        // make all topics virtual and consumers use the default prefix
        VirtualDestinationInterceptor virtualDestinationInterceptor = new VirtualDestinationInterceptor();
        virtualDestinationInterceptor.setVirtualDestinations(new VirtualDestination[]{new VirtualTopic()});
        DestinationInterceptor[] destinationInterceptors = new DestinationInterceptor[]{virtualDestinationInterceptor};
        broker.setDestinationInterceptors(destinationInterceptors);
        return broker;
    }
    
    protected void configurePersistenceAdapter(BrokerService broker) throws IOException {
        File dataFileDir = new File("target/test-amq-data/kahadb/" + broker.getBrokerName());
        KahaDBStore kaha = new KahaDBStore();
        kaha.setDirectory(dataFileDir);
        broker.setPersistenceAdapter(kaha);
    }

}