package org.apache.activemq.book.ch7.sync;
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;
import org.apache.activemq.broker.BrokerService;
public class Server implements MessageListener {
private String brokerUrl = "tcp://0.0.0.0:61616";
private String requestQueue = "requests";
private BrokerService broker;
private Session session;
private MessageProducer producer;
private MessageConsumer consumer;
public void start() throws Exception {
createBroker();
setupConsumer();
}
private void createBroker() throws Exception {
broker = new BrokerService();
broker.setPersistent(false);
broker.setUseJmx(false);
broker.addConnector(brokerUrl);
broker.start();
}
private void setupConsumer() throws JMSException {
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(brokerUrl);
Connection connection;
connection = connectionFactory.createConnection();
connection.start();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination adminQueue = session.createQueue(requestQueue);
producer = session.createProducer(null);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
consumer = session.createConsumer(adminQueue);
consumer.setMessageListener(this);
}
public void stop() throws Exception {
producer.close();
consumer.close();
session.close();
broker.stop();
}
public void onMessage(Message message) {
try {
TextMessage response = this.session.createTextMessage();
if (message instanceof TextMessage) {
TextMessage txtMsg = (TextMessage) message;
String messageText = txtMsg.getText();
response.setText(handleRequest(messageText));
}
response.setJMSCorrelationID(message.getJMSCorrelationID());
producer.send(message.getJMSReplyTo(), response);
} catch (JMSException e) {
e.printStackTrace();
}
}
public String handleRequest(String messageText) {
return "Response to '" + messageText + "'";
}
public static void main(String[] args) throws Exception {
Server server = new Server();
server.start();
System.out.println();
System.out.println("Press any key to stop the server");
System.out.println();
System.in.read();
server.stop();
}
}