[jboss-user] [Clustering/JBoss] - Problem singleton scheduling in a clustered JBoss 4.02 (java

[kenshiro2000]

Hi, 

I'm trying to schedule a singleton in an HA env. My application server is JBoss 4.0.2 in a cluster environment with 2 nodes. But I must say it is a much hard work to do! The documentation is not enough and I'm not so expert in JBoss and MBean realm.

I followed the examples in the JBoss develop guide but something doesn't work yet. And now I'm in trouble!

This is the code excerpt:


  | public class SchedulableService extends ServiceMBeanSupport implements SchedulableServiceMBean
  | {
  | 
  |     public SchedulableService() { }
  | 
  | 	public void run(String amb, int num, boolean gen) {
  | 		Jobber.Run(amb, num, gen);		
  | 	}	
  |     
  | }
  | 
  | public interface SchedulableServiceMBean extends ServiceMBean
  | {
  | 	public abstract void run(String amb, int num, boolean gen); 
  | }
  | 
  | 

Here is the jboss-service.xml file for the configuration of the SAR file:


  | 
  | <server>
  | 
  | <mbean code="it.se.bt.comm.em.SchedulableService" 
  |        name="jboss.schedule:service=HASchedulable">		
  | </mbean>
  | 
  | <mbean code="org.jboss.varia.scheduler.ScheduleManager"
  |        name="jboss:service=ScheduleManager">
  |    <attribute name="StartAtStartup">true</attribute>
  | </mbean>
  | 
  | <mbean code="org.jboss.varia.scheduler.SingleScheduleProvider"
  |        name="jboss:service=HASingleScheduleProvider">
  |    <depends>jboss:service=mypartition</depends>   
  |    <depends>jboss:service=ScheduleManager</depends>  
  |    <depends>jboss.schedule:service=HASchedulable</depends>
  |    
  |    <attribute name="PartitionName">mypartition</attribute>
  |    <attribute name="HASingleton">true</attribute>
  |    <attribute name="ScheduleManagerName">jboss:service=ScheduleManager</attribute>
  |    <attribute name="TargetName">jboss.schedule:service=HASchedulable</attribute>
  |    <attribute name="TargetMethod">run( TPD , 16 , true)</attribute>
  |    <attribute name="StartDate">NOW</attribute>
  |    <attribute name="Period">60000</attribute>
  |    <attribute name="Repetitions">-1</attribute>
  |    
  | </mbean>
  |                           
  | </server> 
  | 
  | 

When I deploy the SAR file I get this Exception:


  | 
  | 2009-02-04 13:36:59,039 ERROR [org.jboss.varia.scheduler.ScheduleManager$MBeanListener] Invoke of the Schedulable MBean failed
  | javax.management.ReflectionException
  | 	at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:216)
  | 	at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
  | 	at org.jboss.varia.scheduler.ScheduleManager$MBeanListener.handleNotification(ScheduleManager.java:593)
  | 	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:597)
  | 	at org.jboss.mx.notification.NotificationListenerProxy.invoke(NotificationListenerProxy.java:138)
  | 	at $Proxy9.handleNotification(Unknown Source)
  | 	at javax.management.NotificationBroadcasterSupport.handleNotification(NotificationBroadcasterSupport.java:257)
  | 	at javax.management.NotificationBroadcasterSupport$SendNotifJob.run(NotificationBroadcasterSupport.java:322)
  | 	at javax.management.NotificationBroadcasterSupport$1.execute(NotificationBroadcasterSupport.java:307)
  | 	at javax.management.NotificationBroadcasterSupport.sendNotification(NotificationBroadcasterSupport.java:229)
  | 	at javax.management.timer.Timer.sendNotification(Timer.java:1237)
  | 	at javax.management.timer.Timer.notifyAlarmClock(Timer.java:1206)
  | 	at javax.management.timer.TimerAlarmClock.run(Timer.java:1289)
  | 	at java.util.TimerThread.mainLoop(Timer.java:512)
  | 	at java.util.TimerThread.run(Timer.java:462)
  | Caused by: java.lang.IllegalArgumentException: Unable to find operation run(TPD,16,true)
  | 	... 17 more
  | 
  | 

I think the problem is related to the "TargetMethod" invokatio but I cannot understand what is wrong.

Does anyone have any idea about it?

thanks


View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4206942#4206942

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4206942