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EclipseLink/DesignDocs/235168

Design Specification: JMX MBean Support

235168

Document History

Date Author Version Description & Notes
2008-06-23 Michael O 0.1 Starting Draft

Project overview

This enhancement will add JMX MBean support to EclipseLink 1.0 by exposing select runtime and development attributes and methods to custom JMX client code or JConsole.

Concepts

Based on JMX 1.2 and JMX Remote API 1.0

References

ELUG Documentation JMX MBeans in WebLogic 10

Requirements

  • R1: Enable JMX MBean Support for WebLogic
  • R2: Enable JMX MBean support for generic J2EE servers
  • R3: MBeans have a 1:1 relationship with their session (multiple EARs=multiple beans)
  • R4: Clients can disable post login MBean registration (via SessionCustomizer)
  • R5: Clients can manage their own registration of EclipseLink MBeans (via ApplicationLifecycleListener)

Design Constraints

  • C1: MBeans are not available until the first login of a server application (lazy-loaded)
  • C2:

Use Cases

  • UC1: EclipseLink managed MBean registration
  • UC2: Application managed MBean registration
  • UC3: No MBean registration

Design / Functionality

Predeploy Registration

Lazy Registration

Here the application can manage registration/deregistration of the MBeans by using a SessionCustomizer in conjunction with a listener on either a servlet or session bean within the JEE application.

  • SessionCustomizer
  • Listener

You must configure the EclipseLink Mbeans in the EAR/meta-inf via a weblogic-application.xml descriptor entry.

<!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"  "http://java.sun.com/dtd/application_1_3.dtd">
<weblogic-application xmlns="http://www.bea.com/ns/weblogic/10">
    <listener>
       <listener-class>org.eclipse.persistence.example.unified.integration.ApplicationLifecycleListenerImpl</listener-class>
    </listener>
</weblogic-application>


Testing

A formal JMX J2SE client test suite is required.

API

GUI

Config files

Documentation

Open Issues

Issue # Owner Description / Notes

Decisions

Issue # Description / Notes Decision

Future Considerations

During the research for this project the following items were identified as out of scope but are captured here as potential future enhancements. If agreed upon during the review process these should be logged in the bug system.

  • OC4J, WebSphere, JBoss, Geronimo specific MBean support

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