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/*
*
* 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 org.apache.qpid.amqp_1_0.jms.example;
import java.io.InputStream;
import java.util.Properties;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
public class Hello
{
public Hello()
{
}
public static void main(String[] args)
{
Hello hello = new Hello();
hello.runExample();
}
private void runExample()
{
try(InputStream propertiesStream = getClass().getResourceAsStream("hello.properties"))
{
Properties properties = new Properties();
// Read the hello.properties JNDI properties file and use contents to create the InitialContext.
properties.load(propertiesStream);
Context context = new InitialContext(properties);
// Alternatively, JNDI information can be supplied by setting the "java.naming.factory.initial"
// system property to value "org.apache.qpid.amqp_1_0.jms.jndi.PropertiesFileInitialContextFactory"
// and setting the "java.naming.provider.url" system property as a URL to a properties file.
ConnectionFactory connectionFactory = (ConnectionFactory) context.lookup("localhost");
Connection connection = connectionFactory.createConnection();
Session producersession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Queue queue = (Queue) context.lookup("queue");
Session consumerSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageConsumer messageConsumer = consumerSession.createConsumer(queue);
final CountDownLatch latch = new CountDownLatch(1);
messageConsumer.setMessageListener(new MessageListener()
{
public void onMessage(final Message message)
{
try
{
if(message instanceof TextMessage)
{
System.out.println(((TextMessage) message).getText());
}
else
{
System.out.println("Received enexpected message type: " + message.getClass().getName());
}
latch.countDown();
}
catch (JMSException e)
{
System.out.println("Caught exception in onMessage(): " + e.getMessage());
}
}
});
connection.start();
MessageProducer messageProducer = producersession.createProducer(queue);
TextMessage message = producersession.createTextMessage("Hello world!");
messageProducer.send(message);
int delay = 5;
if(!latch.await(delay, TimeUnit.SECONDS))
{
System.out.println("Waited " + delay + "sec but no message recieved.");
}
connection.close();
context.close();
}
catch (Exception exp)
{
System.out.println("Caught exception: " + exp.getMessage());
exp.printStackTrace();
}
}
}
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