/**
* 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 example;
import org.fusesource.stompjms.StompJmsConnectionFactory;
import org.fusesource.stompjms.StompJmsDestination;
import javax.jms.*;
class Listener {
public static void main(String []args) throws JMSException {
String user = env("STOMP_USER", "admin");
String password = env("STOMP_PASSWORD", "password");
String host = env("STOMP_HOST", "localhost");
int port = Integer.parseInt(env("STOMP_PORT", "61613"));
String destination = arg(args, 0, "/topic/event");
StompJmsConnectionFactory factory = new StompJmsConnectionFactory();
factory.setBrokerURI("tcp://" + host + ":" + port);
Connection connection = factory.createConnection(user, password);
connection.start();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination dest = StompJmsDestination.createDestination(destination);
MessageConsumer consumer = session.createConsumer(dest);
long start = System.currentTimeMillis();
long count = 0;
System.out.println("Waiting for messages...");
while(true) {
Message msg = consumer.receive();
if( msg instanceof TextMessage ) {
String body = ((TextMessage) msg).getText();
if( "SHUTDOWN".equals(body)) {
long diff = System.currentTimeMillis() - start;
System.out.println(String.format("Received %d in %.2f seconds", count, (1.0*diff/1000.0)));
break;
} else {
if( count == 0 ) {
start = System.currentTimeMillis();
}
count ++;
if( count % 1000 == 0 ) {
System.out.println(String.format("Received %d messages.", count));
}
}
} else {
System.out.println("Unexpected message type: "+msg.getClass());
}
}
connection.close();
}
private static String env(String key, String defaultValue) {
String rc = System.getenv(key);
if( rc== null )
return defaultValue;
return rc;
}
private static String arg(String []args, int index, String defaultValue) {
if( index < args.length )
return args[index];
else
return defaultValue;
}
}