/** Unregister all log4j MBeans if there are any left over the old deployment */
protected void unregisterMBeansIfNecessary()
throws MalformedObjectNameException, InstanceNotFoundException, MBeanRegistrationException {
if (mBeanServer.isRegistered(jmxSupport.getObjectName(JMX_OBJECT_NAME))) {
// unregister all log4jMBeans and loggers
Set log4jMBeans = mBeanServer.queryMBeans(jmxSupport.getObjectName("log4j*:*"), null);
for (Iterator it = log4jMBeans.iterator(); it.hasNext(); ) {
ObjectInstance objectInstance = (ObjectInstance) it.next();
ObjectName theName = objectInstance.getObjectName();
mBeanServer.unregisterMBean(theName);
}
}
}
/*
* (non-Javadoc)
*
* @see org.mule.umo.lifecycle.Initialisable#initialise()
*/
public void initialise() throws InitialisationException {
try {
mBeanServer = (MBeanServer) MBeanServerFactory.findMBeanServer(null).get(0);
final ObjectName objectName = jmxSupport.getObjectName(JMX_OBJECT_NAME);
// unregister existing Log4j MBean first if required
unregisterMBeansIfNecessary();
mBeanServer.registerMBean(new HierarchyDynamicMBean(), objectName);
} catch (Exception e) {
throw new InitialisationException(CoreMessages.failedToStart("JMX Agent"), e, this);
}
}