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JMSSink.javaAPI DocApache log4j 1.2.154795Sat Aug 25 00:09:40 BST 2007org.apache.log4j.net

JMSSink

public class JMSSink extends Object implements javax.jms.MessageListener
A simple application that consumes logging events sent by a {@link JMSAppender}.
author
Ceki Gülcü

Fields Summary
static Logger
logger
Constructors Summary
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);
    }
Methods Summary
protected static java.lang.Objectlookup(javax.naming.Context ctx, java.lang.String name)

    try {
      return ctx.lookup(name);
    } catch(NameNotFoundException e) {
      logger.error("Could not find name ["+name+"].");
      throw e;
    }
public static voidmain(java.lang.String[] args)


         
    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 voidonMessage(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);
    }
static voidusage(java.lang.String msg)

    System.err.println(msg);
    System.err.println("Usage: java " + JMSSink.class.getName()
            + " TopicConnectionFactoryBindingName TopicBindingName username password configFile");
    System.exit(1);