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ActiveMQ example source code file (TryJmsClient.java)

This example ActiveMQ source code file (TryJmsClient.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, brokerservice, discoverynetworkconnector, discoverynetworkconnector, exception, exception, io, kahapersistenceadapter, net, network, runnable, simplediscoveryagent, string, string, testbroker, testdestination, thread

The ActiveMQ TryJmsClient.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.bugs.amq1974;

import java.io.File;
import java.net.URISyntaxException;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.network.DiscoveryNetworkConnector;
import org.apache.activemq.store.kahadaptor.KahaPersistenceAdapter;
import org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent;

public class TryJmsClient
{
    private final BrokerService broker = new BrokerService();

    public static void main(String[] args) throws Exception {
        new TryJmsClient().start();
    }

    private void start() throws Exception {

        broker.setUseJmx(false);
        broker.setPersistent(true);
        broker.setBrokerName("TestBroker");
        broker.getSystemUsage().setSendFailIfNoSpace(true);

        broker.getSystemUsage().getMemoryUsage().setLimit(10 * 1024 * 1024);

        KahaPersistenceAdapter persist = new KahaPersistenceAdapter();
        persist.setDirectory(new File("/tmp/broker2"));
        persist.setMaxDataFileLength(20 * 1024 * 1024);
        broker.setPersistenceAdapter(persist);

        String brokerUrl = "tcp://localhost:4501";
        broker.addConnector(brokerUrl);

        broker.start();

        addNetworkBroker();

        startUsageMonitor(broker);

        startMessageSend();

        synchronized(this) {
            this.wait();
        }
    }

    private void startUsageMonitor(final BrokerService brokerService) {
        new Thread(new Runnable() {
            public void run() {
                while (true) {
                    try {
                        Thread.sleep(10000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }

                    System.out.println("ActiveMQ memeory " + brokerService.getSystemUsage().getMemoryUsage().getPercentUsage()
                            + " " + brokerService.getSystemUsage().getMemoryUsage().getUsage());
                    System.out.println("ActiveMQ message store " + brokerService.getSystemUsage().getStoreUsage().getPercentUsage());
                    System.out.println("ActiveMQ temp space " + brokerService.getSystemUsage().getTempUsage().getPercentUsage());
                }
            }
        }).start();
    }

    private void addNetworkBroker() throws Exception {

        DiscoveryNetworkConnector dnc = new DiscoveryNetworkConnector();
        dnc.setNetworkTTL(1);
        dnc.setBrokerName("TestBroker");
        dnc.setName("Broker1Connector");
        dnc.setDynamicOnly(true);

        SimpleDiscoveryAgent discoveryAgent = new SimpleDiscoveryAgent();
        String remoteUrl = "tcp://localhost:4500";
        discoveryAgent.setServices(remoteUrl);

        dnc.setDiscoveryAgent(discoveryAgent);

        broker.addNetworkConnector(dnc);
        dnc.start();
    }

    private void startMessageSend() {
        new Thread(new MessageSend()).start();
    }

    private class MessageSend implements Runnable {
        public void run() {
            try {
                String url = "vm://TestBroker";
                ActiveMQConnection connection = ActiveMQConnection.makeConnection(url);
                connection.setDispatchAsync(true);
                Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                Destination dest = session.createTopic("TestDestination");

                MessageProducer producer = session.createProducer(dest);
                producer.setDeliveryMode(DeliveryMode.PERSISTENT);

                for(int i = 0; i < 99999999; i++)  {
                    TextMessage message = session.createTextMessage("test" + i);

                    /*
                    try {
                        Thread.sleep(1);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    */

                    try {
                        producer.send(message);
                    } catch (Exception e ) {
                        e.printStackTrace();
                        System.out.println("TOTAL number of messages sent " + i);
                        break;
                    }

                    if (i % 1000 == 0) {
                        System.out.println("sent message " + message.getJMSMessageID());
                    }
                }
            } catch (JMSException e) {
                e.printStackTrace();
            } catch (URISyntaxException e) {
                e.printStackTrace();
            }
        }
    }
}

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