/*
* 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 samples.userguide;
import javax.jms.*;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.Properties;
public class MDDConsumer implements MessageListener {
private static String getProperty(String name, String def) {
String result = System.getProperty(name);
if (result == null || result.length() == 0) {
result = def;
}
return result;
}
public static void main(String[] args) throws Exception {
String dest = getProperty("jms_topic", "mdd.MSFT");
MDDConsumer app = new MDDConsumer();
app.run(dest);
}
public void run(String dest) throws Exception {
InitialContext ic = getInitialContext();
TopicConnectionFactory confac = (TopicConnectionFactory) ic.lookup("ConnectionFactory");
TopicConnection connection = confac.createTopicConnection();
TopicSession session = connection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
Topic topic = session.createTopic(dest);
TopicSubscriber topicSubscriber = session.createSubscriber(topic);
topicSubscriber.setMessageListener(this);
System.out.println("MDD-Consumer listening for topic : "+topic.getTopicName());
connection.start();
}
public void onMessage(Message message){
try {
System.out.println(" Market data recived for symbol : "+ message.getJMSDestination().toString());
} catch (JMSException e) {
System.out.println("Error : "+e.getMessage());
}
}
private InitialContext getInitialContext() throws NamingException {
Properties env = new Properties();
if (System.getProperty("java.naming.provider.url") == null) {
env.put("java.naming.provider.url", "tcp://localhost:61616");
}
if (System.getProperty("java.naming.factory.initial") == null) {
env.put("java.naming.factory.initial",
"org.apache.activemq.jndi.ActiveMQInitialContextFactory");
}
return new InitialContext(env);
}
}