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ActiveMQ example source code file (RequesterTool.java)

This example ActiveMQ source code file (RequesterTool.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, activemqconnectionfactory, date, destination, destination, exception, message, requestertool, requestertool, string, string, stringbuffer, textmessage, textmessage, util

The ActiveMQ RequesterTool.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.
 */
import java.util.Arrays;
import java.util.Date;

import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.util.IndentPrinter;

/**
 * A simple tool for publishing messages
 * 
 * 
 */
public class RequesterTool {

    private int messageCount = 10;
    private long sleepTime;
    private boolean verbose = true;
    private int messageSize = 255;
    private long timeToLive;
    private String subject = "TOOL.DEFAULT";
    private String replySubject;
    private boolean topic;
    private String user = ActiveMQConnection.DEFAULT_USER;
    private String password = ActiveMQConnection.DEFAULT_PASSWORD;
    private String url = ActiveMQConnection.DEFAULT_BROKER_URL;
    private boolean transacted;
    private boolean persistent;
    private String clientId;

    private Destination destination;
    private Destination replyDest;
    private MessageProducer producer;
    private MessageConsumer consumer;
    private Session session;

    public static void main(String[] args) {
        RequesterTool requesterTool = new RequesterTool();
        String[] unknown = CommandLineSupport.setOptions(requesterTool, args);
        if (unknown.length > 0) {
            System.out.println("Unknown options: " + Arrays.toString(unknown));
            System.exit(-1);
        }
        requesterTool.run();
    }

    public void run() {

        Connection connection = null;
        try {

            System.out.println("Connecting to URL: " + url);
            System.out.println("Publishing a Message with size " + messageSize + " to " + (topic ? "topic" : "queue") + ": " + subject);
            System.out.println("Using " + (persistent ? "persistent" : "non-persistent") + " messages");
            System.out.println("Sleeping between publish " + sleepTime + " ms");

            // Create the connection
            ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);
            connection = connectionFactory.createConnection();
            if (persistent && clientId != null && clientId.length() > 0 && !"null".equals(clientId)) {
                connection.setClientID(clientId);
            }
            connection.start();

            // Create the Session
            session = connection.createSession(transacted, Session.AUTO_ACKNOWLEDGE);

            // And the Destinations..
            if (topic) {
                destination = session.createTopic(subject);
                if (replySubject == null || replySubject.equals("")) {
                    replyDest = session.createTemporaryTopic();
                } else {
                    replyDest = session.createTopic(replySubject);
                }
            } else {
                destination = session.createQueue(subject);
                if (replySubject == null || replySubject.equals("")) {
                    replyDest = session.createTemporaryQueue();
                } else {
                    replyDest = session.createQueue(replySubject);
                }
            }
            System.out.println("Reply Destination: " + replyDest);

            // Create the producer
            producer = session.createProducer(destination);
            if (persistent) {
                producer.setDeliveryMode(DeliveryMode.PERSISTENT);
            } else {
                producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
            }
            if (timeToLive != 0) {
                System.out.println("Messages time to live " + timeToLive + " ms");
                producer.setTimeToLive(timeToLive);
            }

            // Create the reply consumer
            consumer = session.createConsumer(replyDest);

            // Start sending reqests.
            requestLoop();

            System.out.println("Done.");

            // Use the ActiveMQConnection interface to dump the connection
            // stats.
            ActiveMQConnection c = (ActiveMQConnection)connection;
            c.getConnectionStats().dump(new IndentPrinter());

        } catch (Exception e) {
            System.out.println("Caught: " + e);
            e.printStackTrace();
        } finally {
            try {
                connection.close();
            } catch (Throwable ignore) {
            }
        }
    }

    protected void requestLoop() throws Exception {

        for (int i = 0; i < messageCount || messageCount == 0; i++) {

            TextMessage message = session.createTextMessage(createMessageText(i));
            message.setJMSReplyTo(replyDest);

            if (verbose) {
                String msg = message.getText();
                if (msg.length() > 50) {
                    msg = msg.substring(0, 50) + "...";
                }
                System.out.println("Sending message: " + msg);
            }

            producer.send(message);
            if (transacted) {
                session.commit();
            }

            System.out.println("Waiting for reponse message...");
            Message message2 = consumer.receive();
            if (message2 instanceof TextMessage) {
                System.out.println("Reponse message: " + ((TextMessage)message2).getText());
            } else {
                System.out.println("Reponse message: " + message2);
            }
            if (transacted) {
                session.commit();
            }

            Thread.sleep(sleepTime);

        }
    }

    /**
     * @param i
     * @return
     */
    private String createMessageText(int index) {
        StringBuffer buffer = new StringBuffer(messageSize);
        buffer.append("Message: " + index + " sent at: " + new Date());
        if (buffer.length() > messageSize) {
            return buffer.substring(0, messageSize);
        }
        for (int i = buffer.length(); i < messageSize; i++) {
            buffer.append(' ');
        }
        return buffer.toString();
    }

    public void setClientId(String clientId) {
        this.clientId = clientId;
    }

    public void setPersistent(boolean durable) {
        this.persistent = durable;
    }

    public void setMessageCount(int messageCount) {
        this.messageCount = messageCount;
    }

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

    public void setPassword(String password) {
        this.password = password;
    }

    public void setSleepTime(long sleepTime) {
        this.sleepTime = sleepTime;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public void setTimeToLive(long timeToLive) {
        this.timeToLive = timeToLive;
    }

    public void setTopic(boolean topic) {
        this.topic = topic;
    }

    public void setQueue(boolean queue) {
        this.topic = !queue;
    }

    public void setTransacted(boolean transacted) {
        this.transacted = transacted;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public void setUser(String user) {
        this.user = user;
    }

    public void setVerbose(boolean verbose) {
        this.verbose = verbose;
    }

    public void setReplySubject(String replySubject) {
        this.replySubject = replySubject;
    }
}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ RequesterTool.java source code file:

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