/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.mx.remoting;
import java.util.ArrayList;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.ObjectName;
/**
* JMXUtil is a set of utility functions for dealing with JMX servers and
* MBeans
*
* @author <a href="jhaynie@vocalocity.net">Jeff Haynie</a>
* @version $Revision: 81084 $
*/
public class JMXUtil
{
private static ObjectName mbeanserver;
/**
* return the local MbeanServer by using the system property <tt>jboss.remoting.jmxid</tt>
* which is set by the NetworkRegistry MBean when registered in the mbean server
*
* @return
*/
public static MBeanServer getMBeanServer()
{
ArrayList list = MBeanServerFactory.findMBeanServer(System.getProperty("jboss.remoting.jmxid"));
if(list.isEmpty())
{
return null;
}
return (MBeanServer) list.iterator().next();
}
/**
* get the ObjectName of the MBeanServer
*
* @return object name of the mbean server delegate
* @throws Exception
*/
public static final ObjectName getMBeanServerObjectName()
throws Exception
{
if(mbeanserver == null)
{
mbeanserver = new ObjectName("JMImplementation:type=MBeanServerDelegate");
}
return mbeanserver;
}
/**
* get the MBeanServerId attribute from the server
*
* @param server
* @return mbean server id
* @throws Exception
*/
public static final String getServerId(MBeanServer server)
throws Exception
{
if(server == null)
{
throw new NullPointerException("MBeanServer is null");
}
if(mbeanserver == null)
{
mbeanserver = new ObjectName("JMImplementation:type=MBeanServerDelegate");
}
return (String) server.getAttribute(mbeanserver, "MBeanServerId");
}
}