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ActiveMQ example source code file (MasterSlaveSlaveDieTest.java)

This example ActiveMQ source code file (MasterSlaveSlaveDieTest.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

atomicboolean, atomicboolean, brokerpluginsupport, brokerservice, brokerservice, exception, exception, logger, masterslaveslavedietest, net, network, override, plugin, plugin, testcase, threading, threads, uri

The ActiveMQ MasterSlaveSlaveDieTest.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.broker.ft;

import java.net.URI;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicBoolean;

import junit.framework.TestCase;

import org.apache.activemq.broker.BrokerPlugin;
import org.apache.activemq.broker.BrokerPluginSupport;
import org.apache.activemq.broker.BrokerService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MasterSlaveSlaveDieTest extends TestCase {
    
    private static final Logger LOG = LoggerFactory.getLogger(MasterSlaveSlaveDieTest.class);

    private final AtomicBoolean pluginStopped = new AtomicBoolean(false);
    class Plugin extends BrokerPluginSupport {

        @Override
        public void start() throws Exception {
            LOG.info("plugin start");
            super.start();
        }

        @Override
        public void stop() throws Exception {
            LOG.info("plugin stop");
            pluginStopped.set(true);
            super.stop();
        }
        
    }
    public void testSlaveDieMasterStays() throws Exception {
        final BrokerService master = new BrokerService();
        master.setBrokerName("master");
        master.setPersistent(false);
        // The wireformat negotiation timeout (defaults to same as
        // MaxInactivityDurationInitalDelay) needs to be a bit longer
        // on slow running machines - set it to 90 seconds.
        master.addConnector("tcp://localhost:0?wireFormat.maxInactivityDurationInitalDelay=90000");
        master.setWaitForSlave(true);
        master.setPlugins(new BrokerPlugin[] { new Plugin() });
        
        final BrokerService slave = new BrokerService();
        slave.setBrokerName("slave");
        slave.setPersistent(false);
        URI masterUri = master.getTransportConnectors().get(0).getConnectUri();
        //SocketProxy masterProxy = new SocketProxy(masterUri);
        slave.setMasterConnectorURI(masterUri.toString());
        
        slave.setUseJmx(false);
        slave.getManagementContext().setCreateConnector(false);

        Executors.newSingleThreadExecutor().execute(new Runnable() {
            public void run() {
                try {
                    master.start();
                } catch (Exception e) {
                    LOG.warn("Exception starting master: " + e);
                    e.printStackTrace();
                }
            }
        });
        slave.start();
        slave.waitUntilStarted();
        
        master.waitUntilStarted();
        
        LOG.info("killing slave..");
        slave.stop();
        slave.waitUntilStopped();

        LOG.info("checking master still alive");
        assertTrue("master is still alive", master.isStarted());
        assertFalse("plugin was not yet stopped", pluginStopped.get());
        master.stop();
        master.waitUntilStopped();
    }
}

Other ActiveMQ examples (source code examples)

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