JMX and log4j

[Giriraj Vengurleker <gv...@serus.com>]

Hi

 

I am trying to register the Logger MBeans using the following code : However
I get exceptions pointing out that some of them are already registered. This
is despite my check for existing MBeans. 

Also, the exception seems harmless but there is no way to suppress it.

 

Can someone please advise? Ideally I would like to know why I get the
exceptions.

 

Thanks

 

 

            public static void loadMBeans() {

            

            try {

               // Create and Register the top level Log4J MBean

 

                                    HierarchyDynamicMBean hdm = new
HierarchyDynamicMBean();

                                    ObjectName mbo = new
ObjectName("log4j:hiearchy=default");

 
SerusJMXAgent.getAgent().registerMBean(mbo, hdm);

 

               // Add the root logger to the Hierarchy MBean

 

                                    Logger rootLogger =
Logger.getRootLogger();

 
hdm.addLoggerMBean(rootLogger.getName());

 

               // Get each logger from the Log4J Repository and add it to 

               // the Hierarchy MBean created above.

 

                                    LoggerRepository r =
LogManager.getLoggerRepository();

                                    java.util.Enumeration enum1 =
r.getCurrentLoggers();

                                    Logger logger = null;

 

                                    while (enum1.hasMoreElements()){


                                                logger = (Logger)
enum1.nextElement();                                     

                                                ObjectName objn = new
ObjectName("log4j", "logger", logger.getName());

                                                if(
!SerusJMXAgent.getAgent().existsBean(objn) ) {

 
hdm.addLoggerMBean(logger.getName());

                                                }

                                    }                       

                        }

                        catch(Exception ex){

                                    log.error(ex.getMessage());


                        }

            }