org.ow2.jonas.camel.example.jms.ExampleJMS Maven / Gradle / Ivy
/**
* JOnAS: Java(TM) Open Application Server
* Copyright (C) 2009-2010 Bull S.A.S.
* Contact: [email protected]
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* --------------------------------------------------------------------------
* $Id: ExampleJMS.java 19967 2010-06-09 13:47:02Z alitokmen $
* --------------------------------------------------------------------------
*/
package org.ow2.jonas.camel.example.jms;
import java.io.File;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.osgi.framework.BundleContext;
import org.ow2.jonas.camel.component.RouteBuilderComponent;
import org.ow2.util.log.Log;
import org.ow2.util.log.LogFactory;
/**
* A simple example on how to use the camel service on JOnAS 5.
*
* @author Guillaume Renault
*/
public class ExampleJMS extends RouteBuilderComponent {
/**
* The logger.
*/
private Log logger = LogFactory.getLog(this.getClass());
/**
* The JONAS_BASE/logs folder.
*/
private File jonasLogs;
/**
* Constructor: saves the BundleContext.
*/
public ExampleJMS(final BundleContext bundleContext) {
super(bundleContext);
}
/**
* Saves the $JONAS_BASE/logs directory, calls
* {@link RouteBuilderComponent#start()} and launches a self-test.
*/
@Override
public void start() throws Throwable {
String jonasBase = System.getProperty("jonas.base");
if (jonasBase == null) {
throw new IllegalStateException("jonas.base is not set!");
}
File jonasBaseFile = new File(jonasBase);
if (!jonasBaseFile.isDirectory()) {
throw new IllegalStateException(jonasBaseFile + " is not a directory");
}
this.jonasLogs = new File(jonasBaseFile, "logs");
if (!this.jonasLogs.isDirectory()) {
throw new IllegalStateException(this.jonasLogs + " is not a directory");
}
super.start();
// For the internal test, we need to change the class loader
//
// Note that in the CAMEL routes, the class loader is always correct so
// we don't need to worry about this...
final ClassLoader oldCL = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
this.test();
} finally {
Thread.currentThread().setContextClassLoader(oldCL);
}
}
/**
* Add routes to the CAMEL context.
*/
@Override
public void configure() throws Exception {
this.from("registry:queue").process(new Processor() {
public void process(final Exchange e) throws Exception {
String message = e.getIn().getBody(String.class);
ExampleJMS.this.logger.info("Received JMS message: " + message);
File log = new File(ExampleJMS.this.jonasLogs, message);
log.createNewFile();
}
});
}
/**
* Test the route.
*/
public void test() throws Exception {
Context context = new InitialContext();
QueueConnectionFactory connectionFactory = (QueueConnectionFactory) context.lookup("JQCF");
QueueConnection queueConnection = connectionFactory.createQueueConnection();
QueueSession queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
Queue queue = (Queue) context.lookup("sampleQueue");
QueueSender jmsSender = queueSession.createSender(queue);
TextMessage message = queueSession.createTextMessage("Test Message");
jmsSender.send(message);
}
}