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ActiveMQ example source code file (FailoverClusterTest.java)

This example ActiveMQ source code file (FailoverClusterTest.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, activemqconnectionfactory, brokerservice, brokerservice, exception, exception, net, network, number, override, set, string, string, transportconnector, uri, util

The ActiveMQ FailoverClusterTest.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.transport.failover;

import java.net.URI;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.jms.Connection;
import javax.jms.MessageConsumer;
import javax.jms.Queue;
import javax.jms.Session;
import junit.framework.TestCase;
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.network.NetworkConnector;


public class FailoverClusterTest extends TestCase {

    private static final int NUMBER = 10;
    private static final String BROKER_BIND_ADDRESS = "tcp://0.0.0.0:0";
    private static final String BROKER_A_NAME = "BROKERA";
    private static final String BROKER_B_NAME = "BROKERB";
    private BrokerService brokerA;
    private BrokerService brokerB;
    private String clientUrl;

    private final List<ActiveMQConnection> connections = new ArrayList();


    public void testClusterConnectedAfterClients() throws Exception {
        createClients();
        if (brokerB == null) {
            brokerB = createBrokerB(BROKER_BIND_ADDRESS);
        }
        Thread.sleep(3000);
        Set<String> set = new HashSet();
        for (ActiveMQConnection c : connections) {
            set.add(c.getTransportChannel().getRemoteAddress());
        }
        assertTrue(set.size() > 1);
    }

    public void testClusterURIOptionsStrip() throws Exception {
        createClients();
        if (brokerB == null) {
            // add in server side only url param, should not be propagated
            brokerB = createBrokerB(BROKER_BIND_ADDRESS + "?transport.closeAsync=false");
        }
        Thread.sleep(3000);
        Set<String> set = new HashSet();
        for (ActiveMQConnection c : connections) {
            set.add(c.getTransportChannel().getRemoteAddress());
        }
        assertTrue(set.size() > 1);
    }


    public void testClusterConnectedBeforeClients() throws Exception {

        if (brokerB == null) {
            brokerB = createBrokerB(BROKER_BIND_ADDRESS);
        }
        Thread.sleep(5000);
        createClients();
        Thread.sleep(2000);
        brokerA.stop();
        Thread.sleep(2000);

        URI brokerBURI = new URI( brokerB.getTransportConnectors().get(0).getPublishableConnectString());
        for (ActiveMQConnection c : connections) {
            String addr = c.getTransportChannel().getRemoteAddress();
            assertTrue(addr.indexOf("" + brokerBURI.getPort()) > 0);
        }
    }

    @Override
    protected void setUp() throws Exception {
        if (brokerA == null) {
            brokerA = createBrokerA(BROKER_BIND_ADDRESS + "?transport.closeAsync=false");
            clientUrl = "failover://(" + brokerA.getTransportConnectors().get(0).getPublishableConnectString() + ")";
        }
    }

    @Override
    protected void tearDown() throws Exception {
        for (Connection c : connections) {
            c.close();
        }
        if (brokerB != null) {
            brokerB.stop();
            brokerB = null;
        }
        if (brokerA != null) {
            brokerA.stop();
            brokerA = null;
        }
    }

    protected BrokerService createBrokerA(String uri) throws Exception {
        BrokerService answer = new BrokerService();
        answer.setUseJmx(false);
        configureConsumerBroker(answer, uri);
        answer.start();
        return answer;
    }

    protected void configureConsumerBroker(BrokerService answer, String uri) throws Exception {
        answer.setBrokerName(BROKER_A_NAME);
        answer.setPersistent(false);
        TransportConnector connector = answer.addConnector(uri);
        connector.setRebalanceClusterClients(true);
        connector.setUpdateClusterClients(true);
        answer.setUseShutdownHook(false);
    }

    protected BrokerService createBrokerB(String uri) throws Exception {
        BrokerService answer = new BrokerService();
        answer.setUseJmx(false);
        configureNetwork(answer, uri);
        answer.start();
        return answer;
    }

    protected void configureNetwork(BrokerService answer, String uri) throws Exception {
        answer.setBrokerName(BROKER_B_NAME);
        answer.setPersistent(false);
        NetworkConnector network = answer.addNetworkConnector("static://" + brokerA.getTransportConnectors().get(0).getPublishableConnectString());
        network.setDuplex(true);
        TransportConnector connector = answer.addConnector(uri);
        connector.setRebalanceClusterClients(true);
        connector.setUpdateClusterClients(true);
        answer.setUseShutdownHook(false);
    }

    protected void createClients() throws Exception {
        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(clientUrl);
        for (int i = 0; i < NUMBER; i++) {
            ActiveMQConnection c = (ActiveMQConnection) factory.createConnection();
            c.start();
            Session s = c.createSession(false, Session.AUTO_ACKNOWLEDGE);
            Queue queue = s.createQueue(getClass().getName());
            MessageConsumer consumer = s.createConsumer(queue);
            connections.add(c);
        }
    }
}

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