Hi Alex,
I had an unhandled NPE thrown from onEvent method of the custom event
handler I wrote..
Just try putting event.eventContext.getVariableValue("");
Caused by: java.lang.NullPointerException
at
edu.indiana.extreme.ode.events.LeadEventListener.onEvent(LeadEventListener.java:24)
My system works fine now as I fixed the NPE :).. Not sure whether this
is due to some changes I did to the system..
thanks,
Thilina
On Fri, Apr 4, 2008 at 4:35 PM, Alex Boisvert <[EMAIL PROTECTED]> wrote:
> Thilina,
>
> I've never seen such thing and I've been abusing Ode in various ways. Can
> you describe what you do to make this happen?
>
> alex
>
>
> On Fri, Apr 4, 2008 at 1:11 PM, Thilina Gunarathne <[EMAIL PROTECTED]>
>
>
> wrote:
>
> > Wat scares me most is the following log messages I got... Whole server
> > failing due to an error in one process instance is not acceptable at
> > all... I'm not sure about the exact validity of the message, cause I
> > went ahead and fixed the NPE without digging more...
> >
> > DEBUG - GeronimoLog.debug(66) | BPEL SERVER STOPPING
> > 13:01:42,164 DEBUG [BpelServerImpl] BPEL SERVER STOPPING
> >
> > ~Thilina
> >
> > On Fri, Apr 4, 2008 at 4:08 PM, Thilina Gunarathne <[EMAIL PROTECTED]>
> > wrote:
> > > Hi Matthieu,
> > > I completely agree with you that ODE should not fail due to a silly
> > > mistake in an event handler.
> > >
> > > The next thing is if ODE fails like that in any case it's nice if it
> > > notifies the waiting client (if there are any) about that...
> > >
> > > thanks,
> > > Thilina
> > >
> > >
> > >
> > > On Fri, Apr 4, 2008 at 2:42 PM, Matthieu Riou <[EMAIL PROTECTED]>
> > wrote:
> > > > I completely agree that hanging like this and not handling the
> > exception is
> > > > bad, but I don't think ODE should abort the current execution to
> > provide an
> > > > error back to the client because something happened in an event
> > handler. The
> > > > client could even not be there. We should log the error and then
> > proceed.
> > > >
> > > > Matthieu
> > > >
> > > > On Fri, Apr 4, 2008 at 10:56 AM, Thilina Gunarathne <
> > [EMAIL PROTECTED]>
> > > >
> > > >
> > > > wrote:
> > > >
> > > > > Hi Alek,
> > > > > done...
> > > > > https://issues.apache.org/jira/browse/ODE-261
> > > > >
> > > > > It's nice if ODE can provide a error back..
> > > > > thanks,
> > > > > Thilina
> > > > >
> > > > > On Fri, Apr 4, 2008 at 1:25 PM, Alex Boisvert <
> > [EMAIL PROTECTED]>
> > > > > wrote:
> > > > > > Hi Thilina,
> > > > > >
> > > > > > I would hope we can provide an error back to the client instead
> > of
> > > > > letting
> > > > > > it time out. Can you file an issue? We need to analyze the
> > code path
> > > > > and
> > > > > > determine where/how to handle this.
> > > > > >
> > > > > > thanks,
> > > > > > alex
> > > > > >
> > > > > >
> > > > > > On Fri, Apr 4, 2008 at 10:09 AM, Thilina Gunarathne <
> > [EMAIL PROTECTED]>
> > > > > > wrote:
> > > > > >
> > > > > >
> > > > > > > Hi,
> > > > > > > I did a mistake in the event handler I wrote, resulted in a
> > null
> > > > > > > pointer exception, which happened immediately after the first
> > > > > receive.
> > > > > > > This made the process instance to abort (not sure whether the
> > engine
> > > > > > > crashed too), but my client program never got an error back
> > and kept
> > > > > > > on waiting... Just wondering whether this is an expected
> > behavior or
> > > > > a
> > > > > > > bug...
> > > > > > >
> > > > > > > 13:01:41,556 ERROR [BpelEngineImpl] Scheduled job failed;
> > > > > > > jobDetail={type=INVOKE_INTERNAL,
> > > > > > > pid={
> > > > > > >
> > > > >
> >
> http://www.extreme.indiana.edu/xwf/bpel/Echo_Workflow_20080321_161030_946/}echo-3<http://www.extreme.indiana.edu/xwf/bpel/Echo_Workflow_20080321_161030_946/%7Decho-3>
> > <
> >
> http://www.extreme.indiana.edu/xwf/bpel/Echo_Workflow_20080321_161030_946/%7Decho-3
> > >
> > > > > <
> > > > >
> >
> http://www.extreme.indiana.edu/xwf/bpel/Echo_Workflow_20080321_161030_946/%7Decho-3
> > > > > >
> > > > > >
> > > > > > > ,
> > > > > > > mexid=hqejbhcnphr3656bmodatr}
> > > > > > > java.lang.RuntimeException: java.lang.NullPointerException
> > > > > > > at
> > > > > > >
> > > > >
> > org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:464)
> > > > > > > at
> > > > > org.apache.ode.jacob.vpu.JacobVPU.execute(JacobVPU.java:139)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelRuntimeContextImpl.execute(BpelRuntimeContextImpl.java:812)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.PartnerLinkMyRoleImpl.invokeNewInsedu.indiana.extreme.ode.events
> > > > > >
> > > > > >
> > > > > > > .LeadEventListener.onEvent
> > > > > > > tance(PartnerLinkMyRoleImpl.java:197)
> > > > > > > at
> > > > > > >
> > > > >
> > org.apache.ode.bpel.engine.BpelProcess.invokeProcess(BpelProcess.java:194)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelProcess.handleWorkEvent(BpelProcess.java:362)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob(BpelEngineImpl.java:328)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelServerImpl.onScheduledJob(BpelServerImpl.java:373)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4$1.call(SimpleScheduler.java:341)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4$1.call(SimpleScheduler.java:340)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:179)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4.call(SimpleScheduler.java:339)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4.call(SimpleScheduler.java:336)
> > > > > > > at
> > > > > > >
> > java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
> > > > > > > at
> > java.util.concurrent.FutureTask.run(FutureTask.java:123)
> > > > > > > at
> > > > > > >
> > > > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
> > > > > > > at
> > > > > > >
> > > > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
> > > > > > > at java.lang.Thread.run(Thread.java:595)
> > > > > > > Caused by: java.lang.NullPointerException
> > > > > > > at
> > > > > > >
> > > > >
> >
> edu.indiana.extreme.ode.events.LeadEventListener.onEvent(LeadEventListener.java:24)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelEngineImpl.fireEvent(BpelEngineImpl.java:422)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelRuntimeContextImpl.sendEvent(BpelRuntimeContextImpl.java:1000)
> > > > > > > at
> > org.apache.ode.bpel.runtime.PROCESS.run(PROCESS.java:49)
> > > > > > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> > Method)
> > > > > > > at
> > > > > > >
> > > > >
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > > > > > > at
> > > > > > >
> > > > >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > > > > > > at java.lang.reflect.Method.invoke(Method.java:585)
> > > > > > > at
> > > > > > >
> > > > >
> > org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:451)
> > > > > > > ... 17 more
> > > > > > > DEBUG - GeronimoLog.debug(66) | BPEL SERVER STOPPING
> > > > > > > 13:01:42,164 DEBUG [BpelServerImpl] BPEL SERVER STOPPING
> > > > > > > ERROR - GeronimoLog.error(108) | Error while executing
> > transaction
> > > > > > > org.apache.ode.bpel.iapi.Scheduler$JobProcessorException:
> > > > > > > java.lang.RuntimeException: java.lang.NullPointerException
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob(BpelEngineImpl.java:338)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelServerImpl.onScheduledJob(BpelServerImpl.java:373)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4$1.call(SimpleScheduler.java:341)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4$1.call(SimpleScheduler.java:340)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:179)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4.call(SimpleScheduler.java:339)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.scheduler.simple.SimpleScheduler$4.call(SimpleScheduler.java:336)
> > > > > > > at
> > > > > > >
> > java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
> > > > > > > at
> > java.util.concurrent.FutureTask.run(FutureTask.java:123)
> > > > > > > at
> > > > > > >
> > > > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
> > > > > > > at
> > > > > > >
> > > > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
> > > > > > > at java.lang.Thread.run(Thread.java:595)
> > > > > > > Caused by: java.lang.RuntimeException:
> > java.lang.NullPointerException
> > > > > > > at
> > > > > > >
> > > > >
> > org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:464)
> > > > > > > at
> > > > > org.apache.ode.jacob.vpu.JacobVPU.execute(JacobVPU.java:139)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelRuntimeContextImpl.execute(BpelRuntimeContextImpl.java:812)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.PartnerLinkMyRoleImpl.invokeNewInstance(PartnerLinkMyRoleImpl.java:197)
> > > > > > > at
> > > > > > >
> > > > >
> > org.apache.ode.bpel.engine.BpelProcess.invokeProcess(BpelProcess.java:194)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelProcess.handleWorkEvent(BpelProcess.java:362)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob(BpelEngineImpl.java:328)
> > > > > > > ... 11 more
> > > > > > > Caused by: java.lang.NullPointerException
> > > > > > > at
> > > > > > >
> > > > >
> >
> edu.indiana.extreme.ode.events.LeadEventListener.onEvent(LeadEventListener.java:24)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelEngineImpl.fireEvent(BpelEngineImpl.java:422)
> > > > > > > at
> > > > > > >
> > > > >
> >
> org.apache.ode.bpel.engine.BpelRuntimeContextImpl.sendEvent(BpelRuntimeContextImpl.java:1000)
> > > > > > > at
> > org.apache.ode.bpel.runtime.PROCESS.run(PROCESS.java:49)
> > > > > > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> > Method)
> > > > > > > at
> > > > > > >
> > > > >
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > > > > > > at
> > > > > > >
> > > > >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > > > > > > at java.lang.reflect.Method.invoke(Method.java:585)
> > > > > > > at
> > > > > > >
> > > > >
> > org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:451)
> > > > > > > ... 17 more
> > > > > > >
> > > > > > > thanks,
> > > > > > > Thilina
> > > > > > > --
> > > > > > > Thilina Gunarathne - http://thilinag.blogspot.com
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Thilina Gunarathne - http://thilinag.blogspot.com
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > >
> > >
> > > Thilina Gunarathne - http://thilinag.blogspot.com
> > >
> >
> >
> >
> > --
> > Thilina Gunarathne - http://thilinag.blogspot.com
> >
>
--
Thilina Gunarathne - http://thilinag.blogspot.com
