/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* 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.
*/
/*
* Created on Mar 30, 2009
*/
package com.bigdata.jmx;
import java.lang.management.ManagementFactory;
import java.util.Enumeration;
import javax.management.JMException;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.jmx.HierarchyDynamicMBean;
import org.apache.log4j.spi.LoggerRepository;
/**
* Utility method to register a log4j MBean.
* <p>
* Note: This class is based on ManagedUtil in the Apache zookeeper project and
* is therefore under the Apache License.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*
* @see JMXTest
*/
public class JMXLog4jMBeanUtil {
private static final Logger log = Logger.getLogger(JMXLog4jMBeanUtil.class);
/**
* Register the log4j JMX mbeans.
*
* @throws JMException
* if registration fails
*
* @see http://logging.apache.org/log4j/1.2/apidocs/index.html?org/apache/log4j/
* jmx/package-summary.html
*/
public static void registerLog4jMBeans() throws JMException {
// Log4J MBean
final HierarchyDynamicMBean hdm = new HierarchyDynamicMBean();
/*
* Register the hierarchy MBean with the platform's mbean server.
*
* Note: It appears that you need to do this before you add loggers to
* this mbean.
*/
{
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName mbo = new ObjectName("log4j:hierarchy=default");
mbs.registerMBean(hdm, mbo);
}
// Add the root logger to the Hierarchy MBean
{
final Logger rootLogger = Logger.getRootLogger();
hdm.addLoggerMBean(rootLogger.getName());
}
/*
* Get each logger from the Log4J Repository and add it to the Hierarchy
* MBean created above.
*/
{
final LoggerRepository r = LogManager.getLoggerRepository();
final Enumeration enumer = r.getCurrentLoggers();
while (enumer.hasMoreElements()) {
final Logger logger = (Logger) enumer.nextElement();
// try {
hdm.addLoggerMBean(logger.getName());
// } catch (Throwable t) {
// log.error("Could not add logger: " + logger.getName(), t);
// }
}
}
}
}