4:11 a.m.
Antoine T [https://community.jboss.org/people/atran] created the discussion
"Not terminating process if timer"
To view the discussion, visit: https://community.jboss.org/message/805231#805231
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Hi,
I am using Eclipse and jBPM 5.4.0 workflow engine. Whenever I use a timer as simple as
below (FigB), and I launch it in Eclipse, the +Terminate End Event+ doesn't end the
Java process (FigA). However, if I delete the timer, the process ends. It seems this is a
bug? Has anyone encountered the same issue? Thank you.
Antoine
FigA: The process doesn't end
https://community.jboss.org/servlet/JiveServlet/showImage/2-805231-20524/...
https://community.jboss.org/servlet/JiveServlet/downloadImage/2-805231-20...
FigB: Simple Timer:
https://community.jboss.org/servlet/JiveServlet/showImage/2-805231-20523/...
https://community.jboss.org/servlet/JiveServlet/downloadImage/2-805231-20...
|| *Header 1* ||
| <?xml version="1.0" encoding="UTF-8"?>
<definitions id="Definition"
targetNamespace="http://www.jboss.org/drools"
typeLanguage="http://www.java.com/javaTypes"
expressionLanguage="http://www.mvel.org/2.0"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL
BPMN20.xsd"
xmlns:g="http://www.jboss.org/drools/flow/gpd"
xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlns:dc="http://www.omg.org/spec/DD/20100524/DC"
xmlns:di="http://www.omg.org/spec/DD/20100524/DI"
xmlns:tns="http://www.jboss.org/drools">
<process processType="Private" isExecutable="true"
id="com.sample.bpmn" name="Sample Process"
tns:packageName="defaultPackage" >
<!-- nodes -->
<startEvent id="_1" name="StartProcess" />
<intermediateCatchEvent id="_2" name="Timer" >
<timerEventDefinition>
<timeDuration
xsi:type="tFormalExpression">1000</timeDuration>
</timerEventDefinition>
</intermediateCatchEvent>
<endEvent id="_3" name="End" >
<terminateEventDefinition />
</endEvent>
<!-- connections -->
<sequenceFlow id="_1-_2" sourceRef="_1"
targetRef="_2" />
<sequenceFlow id="_2-_3" sourceRef="_2"
targetRef="_3" />
</process>
<bpmndi:BPMNDiagram>
<bpmndi:BPMNPlane bpmnElement="com.sample.bpmn" >
<bpmndi:BPMNShape bpmnElement="_1" >
<dc:Bounds x="42" y="42" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_2" >
<dc:Bounds x="135" y="42" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_3" >
<dc:Bounds x="224" y="43" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="_1-_2" >
<di:waypoint x="66" y="66" />
<di:waypoint x="159" y="66" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_2-_3" >
<di:waypoint x="159" y="66" />
<di:waypoint x="248" y="67" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions> |
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11:33 a.m.
New subject: [jBPM] - Re: Not terminating process if timer
Maciej Swiderski [https://community.jboss.org/people/swiderski.maciej] created the
discussion
"Re: Not terminating process if timer"
To view the discussion, visit: https://community.jboss.org/message/805539#805539
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might be that timer has use scheduler thread pool and thus jvm is not terminating
automatically, could you try dispose the ksession at the end to check if the jvm process
with end?
HTH
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2:58 a.m.
New subject: [jBPM] - Re: Not terminating process if timer
Antoine T [https://community.jboss.org/people/atran] created the discussion
"Re: Not terminating process if timer"
To view the discussion, visit: https://community.jboss.org/message/805922#805922
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Hi,
Thank you for your answer. I tried your solution in a script task before the end:
StatefulKnowledgeSession ksession = (StatefulKnowledgeSession)
kcontext.getKnowledgeRuntime();
ksession.dispose();
However, the process terminated with an exception:
ERROR instance.timer.TimerManager.execute - Error when executing timer job
org.drools.RuntimeDroolsException: Unexpected exception executing action
org.jbpm.process.instance.event.DefaultSignalManager$SignalProcessInstanceAction@71b8b3bb
at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:995)
at
org.drools.impl.StatefulKnowledgeSessionImpl.executeQueuedActions(StatefulKnowledgeSessionImpl.java:866)
at
org.jbpm.process.instance.event.DefaultSignalManager.signalEvent(DefaultSignalManager.java:90)
at
org.jbpm.process.instance.timer.TimerManager$ProcessJob.execute(TimerManager.java:323)
at org.drools.time.SelfRemovalJob.execute(SelfRemovalJob.java:15)
at org.drools.time.impl.DefaultTimerJobInstance.call(DefaultTimerJobInstance.java:51)
at org.drools.time.impl.DefaultTimerJobInstance.call(DefaultTimerJobInstance.java:14)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.jbpm.workflow.instance.WorkflowRuntimeException:
[fr.thales.services.jbpm.validationPattern.SimpleTimer:1 - Script:4] -- Illegal method
call. This session was previously disposed.
at
org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:132)
I guess the timer thread just never ends?
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5:03 a.m.
New subject: [jBPM] - Re: Not terminating process if timer
Maciej Swiderski [https://community.jboss.org/people/swiderski.maciej] created the
discussion
"Re: Not terminating process if timer"
To view the discussion, visit: https://community.jboss.org/message/806408#806408
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don't dispose the session when executing the process (like in script task) because it
will kill the engine while it's running.
Dispose the session once you get control back from ksession.startProcess() method. When
using timer you could add some delay (like Thread.sleep) to allow timer to fire.
HTH
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6:26 a.m.
New subject: [jBPM] - Re: Not terminating process if timer
Antoine T [https://community.jboss.org/people/atran] created the discussion
"Re: Not terminating process if timer"
To view the discussion, visit: https://community.jboss.org/message/806433#806433
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Thank you for your answer.
I did as mentionned this:
Thread.sleep(5000);
ksession.dispose();
For a process that last around 1s. It works but has some drawbacks:
1) I have to be sure about the maximum duration of a process and it is impossible for some
process.
2) Since the duration are approximative, I have to add some margins. I still get the
exception if I dispose just before the end node.
3) The process ends later than it should.
However, this timer issue seems not to happen when launched in jBPM-console.
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