/*
* 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 org.apache.activemq.ActiveMQConnectionFactory;
import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MapMessage;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TemporaryQueue;
/**
* The Retailer orders computers from the Vendor by sending a message via
* the VendorOrderQueue. It then syncronously receives the reponse message
* and reports if the order was successful or not.
*/
public class Retailer implements Runnable {
private String url;
private String user;
private String password;
public Retailer(String url, String user, String password) {
this.url = url;
this.user = user;
this.password = password;
}
public void run() {
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);
try {
Connection connection = connectionFactory.createConnection();
// The Retailer's session is non-trasacted.
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination vendorOrderQueue = session.createQueue("VendorOrderQueue");
TemporaryQueue retailerConfirmQueue = session.createTemporaryQueue();
MessageProducer producer = session.createProducer(vendorOrderQueue);
MessageConsumer replyConsumer = session.createConsumer(retailerConfirmQueue);
connection.start();
for (int i = 0; i < 5; i++) {
MapMessage message = session.createMapMessage();
message.setString("Item", "Computer(s)");
int quantity = (int)(Math.random() * 4) + 1;
message.setInt("Quantity", quantity);
message.setJMSReplyTo(retailerConfirmQueue);
producer.send(message);
System.out.println("Retailer: Ordered " + quantity + " computers.");
MapMessage reply = (MapMessage) replyConsumer.receive();
if (reply.getBoolean("OrderAccepted")) {
System.out.println("Retailer: Order Filled");
} else {
System.out.println("Retailer: Order Not Filled");
}
}
// Send a non-MapMessage to signal the end
producer.send(session.createMessage());
replyConsumer.close();
connection.close();
} catch (JMSException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
String url = "tcp://localhost:61616";
String user = null;
String password = null;
if (args.length >= 1) {
url = args[0];
}
if (args.length >= 2) {
user = args[1];
}
if (args.length >= 3) {
password = args[2];
}
Retailer r = new Retailer(url, user, password);
new Thread(r, "Retailer").start();
}
}