ActiveMQ example source code file (Producer.java)

This example ActiveMQ source code file (Producer.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

bufferedreader, exception, exception, filereader, io, ioexception, jmsexception, messageproducer, producer, producer, string, string, stringbuffer, stringbuffer, thread

The ActiveMQ Producer.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.benchmark;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageProducer;
import javax.jms.Session;

/**
 * @author James Strachan
 * 
 */
public class Producer extends BenchmarkSupport {

    int loops = -1;
    int loopSize = 1000;
    private int messageSize = 1000;

    public Producer() {
    }

    public static void main(String[] args) {
        Producer tool = new Producer();
        if (args.length > 0) {
            tool.setUrl(args[0]);
        }
        if (args.length > 1) {
            tool.setTopic(parseBoolean(args[1]));
        }
        if (args.length > 2) {
            tool.setSubject(args[2]);
        }
        if (args.length > 3) {
            tool.setDurable(parseBoolean(args[3]));
        }
        if (args.length > 4) {
            tool.setMessageSize(Integer.parseInt(args[4]));
        }
        if (args.length > 5) {
            tool.setConnectionCount(Integer.parseInt(args[5]));
        }
        try {
            tool.run();
        } catch (Exception e) {
            System.out.println("Caught: " + e);
            e.printStackTrace();
        }
    }

    public void run() throws Exception {
        start();
        publish();
    }

    // Properties
    // -------------------------------------------------------------------------
    public int getMessageSize() {
        return messageSize;
    }

    public void setMessageSize(int messageSize) {
        this.messageSize = messageSize;
    }

    public int getLoopSize() {
        return loopSize;
    }

    public void setLoopSize(int loopSize) {
        this.loopSize = loopSize;
    }

    // Implementation methods
    // -------------------------------------------------------------------------

    protected void publish() throws Exception {
        final String text = getMessage();

        System.out.println("Publishing to: " + subjects.length + " subject(s)");

        for (int i = 0; i < subjects.length; i++) {
            final String subject = subjects[i];
            Thread thread = new Thread() {
                public void run() {
                    try {
                        publish(text, subject);
                    } catch (JMSException e) {
                        System.out.println("Caught: " + e);
                        e.printStackTrace();
                    }
                }
            };
            thread.start();
        }

    }

    protected String getMessage() {
        StringBuffer buffer = new StringBuffer();
        for (int i = 0; i < messageSize; i++) {
            char ch = 'X';
            buffer.append(ch);
        }
        return buffer.toString();
    }

    protected void publish(String text, String subject) throws JMSException {
        Session session = createSession();

        Destination destination = createDestination(session, subject);

        MessageProducer publisher = session.createProducer(destination);
        if (isDurable()) {
            publisher.setDeliveryMode(DeliveryMode.PERSISTENT);
        } else {
            publisher.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
        }

        System.out.println("Starting publisher on : " + destination + " of type: " + destination.getClass().getName());
        System.out.println("Message length: " + text.length());

        if (loops <= 0) {
            while (true) {
                publishLoop(session, publisher, text);
            }
        } else {
            for (int i = 0; i < loops; i++) {
                publishLoop(session, publisher, text);
            }
        }
    }

    protected void publishLoop(Session session, MessageProducer publisher, String text) throws JMSException {
        for (int i = 0; i < loopSize; i++) {
            Message message = session.createTextMessage(text);

            publisher.send(message);
            count(1);
        }
    }

    protected String loadFile(String file) throws IOException {
        System.out.println("Loading file: " + file);

        StringBuffer buffer = new StringBuffer();
        BufferedReader in = new BufferedReader(new FileReader(file));
        while (true) {
            String line = in.readLine();
            if (line == null) {
                break;
            }
            buffer.append(line);
            buffer.append(File.separator);
        }
        in.close();
        return buffer.toString();
    }
}