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

[Bela Ban (JIRA)]

Expose classes, attributes and operations via @ManagedResource, @ManagedAttribute and @ManagedOperation
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                 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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