[jboss-user] [Management, JMX/JBoss] - Schedulable & jboss-service.xml

[rabbiaqaswar]

Hello

I am trying to use the Scheduler service provided by JBoss 4.2.2 GA. Here is how the scheduler-service in default/deploy directory looks like:


  | <?xml version="1.0" encoding="UTF-8"?>
  | 
  | <server>
  | 
  |    <mbean code="org.jboss.varia.scheduler.Scheduler" name=":service=Scheduler">
  |       <attribute name="StartAtStartup">true</attribute>
  |       <attribute name="SchedulableClass">org.schedular.MySchedular</attribute>
  |       <attribute name="SchedulableArguments">TheName,123456789</attribute>
  |       <attribute name="SchedulableArgumentTypes">java.lang.String,long</attribute>
  |       <attribute name="InitialStartDate">NOW</attribute>
  |       <attribute name="SchedulePeriod">1000</attribute>
  |       <attribute name="InitialRepetitions">5</attribute>
  | 	 <depends>
  | 		<mbean code="javax.management.timer.Timer"
  | 		name="jboss:service=Timer"/>
  | 	</depends>
  |    </mbean>
  | 
  | </server>
  | 

and here is the Scheduler class:


  | package org.schedular;
  | 
  | import java.util.Date;
  | import org.jboss.varia.scheduler.Schedulable;
  | 
  | public class MySchedular implements Schedulable {
  | 
  |     private String name;
  |     private long value;
  | 
  |     public MySchedular(String name, long value) {
  |         this.name = name;
  |         this.value = value;
  |         System.out.println("ctor, name: " + name + ", value: " + value);
  |     }
  | 
  |     public void perform(Date now, long remainingRepetitions) {
  |         System.out.println("perform, now: " + now +
  |                 ", remainingRepetitions: " + remainingRepetitions +
  |                 ", name: " + name + ", value: " + value);
  |     }
  | }

This MySchedular is part of an ejb-module of the application so I have to place it inside the jar file containing all the ejbs. Now the problem is that when i start JBoss it gives the following error:

  | [Scheduler] Failed to find: org.schedular.MySchedular
  | java.lang.ClassNotFoundException: No ClassLoaders found for: org.schedular.MySchedular
  | --- MBeans waiting for other MBeans ---
  | ObjectName: jboss:service=Scheduler
  |   State: FAILED
  |   Reason: org.jboss.deployment.DeploymentException: Exception setting attribute javax.management.Attribute at d006a7 on mbean jboss:service=Scheduler; - nested throwable: (java.security.InvalidParameterException: Given class org.schedular.MySchedular is not  not found)
  | 

When the jar file containing MySchedular is deployed, JBoss deploys it successfully. But the perform method in MySchedular is not executed. Now while the server is running, i make any changes like add an empty line in the scheduler-service.xml and save it, MySchedular perform method is invoked showing:


  | INFO  [STDOUT] ctor, name: TheName,value: 123456789
  | INFO  [STDOUT] perform, now: Sun Apr 20 18:15:55 GST 2008, remainingRepetitions: 4, name: TheName,value: 123456789
  | INFO  [STDOUT] perform, now: Sun Apr 20 18:15:56 GST 2008, remainingRepetitions: 3, name: TheName,value: 123456789
  | INFO  [STDOUT] perform, now: Sun Apr 20 18:15:57 GST 2008, remainingRepetitions: 2, name: TheName,value: 123456789
  | INFO  [STDOUT] perform, now: Sun Apr 20 18:15:58 GST 2008, remainingRepetitions: 1, name: TheName,value: 123456789
  | 

I cannot understand what am I missing here, please see if you can help.

Thanks

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