/*
* 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.log4j.net;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.log4j.xml.DOMConfigurator;
import javax.jms.JMSException;
import javax.jms.ObjectMessage;
import javax.jms.Session;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NameNotFoundException;
import javax.naming.NamingException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
/**
* A simple application that consumes logging events sent by a {@link
* JMSAppender}.
*
*
* @author Ceki Gülcü
* */
public class JMSSink implements javax.jms.MessageListener {
static Logger logger = Logger.getLogger(JMSSink.class);
static public void main(String[] args) throws Exception {
if(args.length != 5) {
usage("Wrong number of arguments.");
}
String tcfBindingName = args[0];
String topicBindingName = args[1];
String username = args[2];
String password = args[3];
String configFile = args[4];
if(configFile.endsWith(".xml")) {
DOMConfigurator.configure(configFile);
} else {
PropertyConfigurator.configure(configFile);
}
new JMSSink(tcfBindingName, topicBindingName, username, password);
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
// Loop until the word "exit" is typed
System.out.println("Type \"exit\" to quit JMSSink.");
while(true){
String s = stdin.readLine( );
if (s.equalsIgnoreCase("exit")) {
System.out.println("Exiting. Kill the application if it does not exit "
+ "due to daemon threads.");
return;
}
}
}
public JMSSink( String tcfBindingName, String topicBindingName, String username,
String password) {
try {
Context ctx = new InitialContext();
TopicConnectionFactory topicConnectionFactory;
topicConnectionFactory = (TopicConnectionFactory) lookup(ctx,
tcfBindingName);
TopicConnection topicConnection =
topicConnectionFactory.createTopicConnection(username,
password);
topicConnection.start();
TopicSession topicSession = topicConnection.createTopicSession(false,
Session.AUTO_ACKNOWLEDGE);
Topic topic = (Topic)ctx.lookup(topicBindingName);
TopicSubscriber topicSubscriber = topicSession.createSubscriber(topic);
topicSubscriber.setMessageListener(this);
} catch(Exception e) {
logger.error("Could not read JMS message.", e);
}
}
public void onMessage(javax.jms.Message message) {
LoggingEvent event;
Logger remoteLogger;
try {
if(message instanceof ObjectMessage) {
ObjectMessage objectMessage = (ObjectMessage) message;
event = (LoggingEvent) objectMessage.getObject();
remoteLogger = Logger.getLogger(event.getLoggerName());
remoteLogger.callAppenders(event);
} else {
logger.warn("Received message is of type "+message.getJMSType()
+", was expecting ObjectMessage.");
}
} catch(JMSException jmse) {
logger.error("Exception thrown while processing incoming message.",
jmse);
}
}
protected static Object lookup(Context ctx, String name) throws NamingException {
try {
return ctx.lookup(name);
} catch(NameNotFoundException e) {
logger.error("Could not find name ["+name+"].");
throw e;
}
}
static void usage(String msg) {
System.err.println(msg);
System.err.println("Usage: java " + JMSSink.class.getName()
+ " TopicConnectionFactoryBindingName TopicBindingName username password configFile");
System.exit(1);
}
}