package org.apache.activemq.book.ch7.sync;
import java.util.UUID;
import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnectionFactory;
public class Client implements MessageListener {
private String brokerUrl = "tcp://0.0.0.0:61616";
private String requestQueue = "requests";
Connection connection;
private Session session;
private MessageProducer producer;
private MessageConsumer consumer;
private Destination tempDest;
public void start() throws JMSException {
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
brokerUrl);
connection = connectionFactory.createConnection();
connection.start();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination adminQueue = session.createQueue(requestQueue);
producer = session.createProducer(adminQueue);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
tempDest = session.createTemporaryQueue();
consumer = session.createConsumer(tempDest);
consumer.setMessageListener(this);
}
public void stop() throws JMSException {
producer.close();
consumer.close();
session.close();
connection.close();
}
public void request(String request) throws JMSException {
System.out.println("Requesting: " + request);
TextMessage txtMessage = session.createTextMessage();
txtMessage.setText(request);
txtMessage.setJMSReplyTo(tempDest);
String correlationId = UUID.randomUUID().toString();
txtMessage.setJMSCorrelationID(correlationId);
this.producer.send(txtMessage);
}
public void onMessage(Message message) {
try {
System.out.println("Received response for: "
+ ((TextMessage) message).getText());
} catch (JMSException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
Client client = new Client();
client.start();
int i = 0;
while (i++ < 10) {
client.request("REQUEST-" + i);
}
Thread.sleep(3000); //wait for replies
client.stop();
}
}