eu.semaine.jms.JMSLogReader.java Source code

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Here is the source code for eu.semaine.jms.JMSLogReader.java

Source

/**
 * Copyright (C) 2008 DFKI GmbH. All rights reserved.
 * Use is subject to license terms -- see license.txt.
 */
package eu.semaine.jms;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.TextMessage;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;

import eu.semaine.jms.receiver.Receiver;

/**
 * @author marc
 *
 */
public class JMSLogReader extends Receiver {
    //DateFormat time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");

    /**
     * @param topicName
     * @throws JMSException
     */
    public JMSLogReader(String topicName) throws JMSException {
        super(topicName);

        consumer.setMessageListener(this);
        startConnection();
    }

    @Override
    public void onMessage(Message m) {
        try {
            if (!(m instanceof TextMessage)) {
                return; // silently ignore
            }
            String dest = m.getJMSDestination().toString();
            // dest is expected to have the form
            // semaine.log.component.log-level
            String[] parts = dest.split("\\.");
            String level = parts[parts.length - 1].toLowerCase();
            String component = parts[parts.length - 2];
            Log log = LogFactory.getLog("semaine.log." + component);
            String text = ((TextMessage) m).getText();
            //text = time.format(new Date(m.getJMSTimestamp())) + " " + text;
            if (level.equals("info"))
                log.info(text);
            else if (level.equals("warn"))
                log.warn(text);
            else if (level.equals("error"))
                log.error(text);
            else if (level.equals("debug"))
                log.debug(text);
            else
                log.info(text);
        } catch (Exception e) {

        }
    }

    public void stopLogging() throws JMSException {
        if (consumer.getMessageListener() == this) {
            consumer.setMessageListener(null);
        }
    }

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        // Use log4j for logging:
        System.setProperty("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.Log4JLogger");
        // Configure log4j
        Logger.getRootLogger().setLevel(Level.DEBUG);
        Logger.getLogger("org.apache").setLevel(Level.INFO);
        PatternLayout layout = new PatternLayout("%-5p %-10c %m\n");
        BasicConfigurator.configure(new ConsoleAppender(layout));
        String component = "*";
        String level = "*";
        if (args.length > 0)
            component = args[0];
        if (args.length > 1)
            level = args[1];
        System.out.println("Looking for log messages in topic 'semaine.log." + component + "." + level + "'");
        new JMSLogReader("semaine.log." + component + "." + level);
    }

}