[jboss-jira] [JBoss JIRA] Commented: (JGRP-408) Expose classes, attributes and operations via @ManagedResource, @ManagedAttribute and @ManagedOperation

Thu Apr 5 05:03:58 EDT 2007

    [ http://jira.jboss.com/jira/browse/JGRP-408?page=comments#action_12358481 ] 

Vladimir Blagojevic commented on JGRP-408:
------------------------------------------

This is very independent of JGroups. Find a volunteer of possible.

> Expose classes, attributes and operations via @ManagedResource, @ManagedAttribute and @ManagedOperation
> -------------------------------------------------------------------------------------------------------
>
>                 Key: JGRP-408
>                 URL: http://jira.jboss.com/jira/browse/JGRP-408
>             Project: JGroups
>          Issue Type: Feature Request
>    Affects Versions: 2.4
>            Reporter: Bela Ban
>         Assigned To: Bela Ban
>             Fix For: 2.6
>
>
> We should be able to simply make an object expose management information by annotating it. 
> Input: annotations and classes
> Output: classes which are registered with the platform MBeanServer at runtime using an API (which is also provided). This API
> uses the annotations and reflection to create DynamicMBeans (or MXBeans ?) which are then registered with the MBeanServer.
> Example:
> @ManagedResource(objectName="jgroups:type=protocol;name=UDP")
> public class UDP extends Protocol {
>   @ManagedAttribute(name="Sent", descr="Number of bytes sent")
>   long sent_msgs=0; // generates a 'public long getSent()' getter, *no* setter !
>   @ManagedOperation(description="Prints statistics over the last N seconds")
>   @Parameters({@Parameter(name="timeframe", description="Number of milliseconds (0 for all stats)")})
>   public String printStats(long timeframe)  {
>      // implement;
>   }
> }

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