[rules-users] No errors thrown from KnowledgeAgent
De Rooms Brecht
bderooms at vub.ac.be
Wed Jul 31 08:45:19 EDT 2013
The bug was caused by one of the InputStreams that was not closed
properly which caused the knowledgeAgent to block.
I think my issues are solved now.
Thanks for looking into this.
Kind Regards,
Op 31/07/2013 14:19, De Rooms Brecht schreef:
> Hello David and thanks for responding.
> I know it supports these event listeners and I use them. In my
> program, I have two knowledge agents and the first one (preprocessing)
> will read the file, preprocess a DRL and then write a second modified
> DRL file in a folder that is monitored by the second one. When I
> modify the original DRL file *(1.* in prints below*)* monitored by the
> preprocessing agent, everything works fine and the rule is
> triggered*(**2.)*. However, when I delete a file *(**3.)*, the
> knowledgeAgent just blocks after AfterChangeSetAppliedEvent and does
> not do anything anymore.. If I send new data in the knowledgeAgent it
> does not react anymore.
>
> I would expect to get a stacktrace of what went wrong but I do not get
> any info besides of the systemeventlistener or knowledgeagentlistener.
> Is there any way I can get a stacktrace?
> Kind Regards,
> De Rooms Brecht
>
> _*1. Resources Changed => Modified: [[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']]*_
> / eventListener 1:::
> ==>[BeforeResourceProcessedEvent(RESOURCE_REMOVED): [FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']]//
> // eventListener 1:::
> ==>[AfterResourceProcessedEvent(RESOURCE_REMOVED): [FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']]//
> // eventListener 1::: ==>[AfterChangeSetProcessedEvent:
> ChangeSetImpl{resourcesRemoved=[], resourcesAdded=[],
> resourcesModified=[[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']],
> knowledgeDefinitionsRemoved=[]}]//
> // eventListener 1::: ==>[ResourceCompilationFailedEvent:
> org.drools.builder.impl.KnowledgeBuilderImpl at 70d0d127]//
> // eventListener 1::: ==>[KnowledgeBaseUpdatedEvent:
> org.drools.impl.KnowledgeBaseImpl at 49669be]//
> // eventListener 1::: ==>[AfterChangeSetAppliedEvent:
> ChangeSetImpl{resourcesRemoved=[], resourcesAdded=[],
> resourcesModified=[[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']],
> knowledgeDefinitionsRemoved=[]}]//
> // eventListener 2::: ==>[BeforeChangeSetAppliedEvent:
> ChangeSetImpl{resourcesRemoved=[], resourcesAdded=[],
> resourcesModified=[[FileResource
> file='knowledge\packaged\test.brules.testRule.drl']],
> knowledgeDefinitionsRemoved=[]}]//
> // eventListener 2:::
> ==>[BeforeResourceProcessedEvent(RESOURCE_REMOVED): [FileResource
> file='knowledge\packaged\test.brules.testRule.drl']]//
> // eventListener 2:::
> ==>[AfterResourceProcessedEvent(RESOURCE_REMOVED): [FileResource
> file='knowledge\packaged\test.brules.testRule.drl']]//
> // eventListener 2::: ==>[AfterChangeSetProcessedEvent:
> ChangeSetImpl{resourcesRemoved=[], resourcesAdded=[],
> resourcesModified=[[FileResource
> file='knowledge\packaged\test.brules.testRule.drl']],
> knowledgeDefinitionsRemoved=[]}]//
> // eventListener 2::: ==>[KnowledgeBaseUpdatedEvent:
> org.drools.impl.KnowledgeBaseImpl at 11c834d1]/
>
> _*2. Rules are triggered when the PKG file its knowledge is updated:*_
> / Changed This Rule::: Got Event: TestEvent( number=5,
> message=doesDynamicEventTypeWork? )//
> // Changed This Rule::: Got Event: TestEvent( number=4,
> message=doesDynamicEventTypeWork? )//
> // Changed This Rule::: Got Event: TestEvent( number=2,
> message=doesDynamicEventTypeWork? )//
> // Changed This Rule::: Got Event: TestEvent( number=1,
> message=doesDynamicEventTypeWork? )//
> // Changed This Rule::: Got Event: TestEvent( number=2,
> message=doesDynamicEventTypeWork? )//
> // Changed This Rule::: Got Event: TestEvent( number=1,
> message=doesDynamicEventTypeWork? )//
> // Changed This Rule::: Got Event: TestEvent( number=2,
> message=doesDynamicEventTypeWork? )//
> // Changed This Rule::: Got Event: TestEvent( number=1,
> message=doesDynamicEventTypeWork? )//
> //
> // eventListener 2::: ==>[AfterChangeSetAppliedEvent:
> ChangeSetImpl{resourcesRemoved=[], resourcesAdded=[],
> resourcesModified=[[FileResource
> file='knowledge\packaged\test.brules.testRule.drl']],
> knowledgeDefinitionsRemoved=[]}]//
> // eventListener 1::: ==>[BeforeChangeSetAppliedEvent:
> ChangeSetImpl{resourcesRemoved=[[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']],
> resourcesAdded=[], resourcesModified=[],
> knowledgeDefinitionsRemoved=[]}]//
> // eventListener 1::: ==>[BeforeChangeSetProcessedEvent:
> ChangeSetImpl{resourcesRemoved=[[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']],
> resourcesAdded=[], resourcesModified=[], knowledgeDefinitionsRemoved=[]}]/
>
>
> _*3. *__*Resources Changed => *__*Removed: [[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']]*_
> / eventListener 1:::
> ==>[BeforeResourceProcessedEvent(RESOURCE_MODIFIED): [FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']]//
> // eventListener 1:::
> ==>[AfterResourceProcessedEvent(RESOURCE_MODIFIED): [FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']]//
> // eventListener 1::: ==>[AfterChangeSetProcessedEvent:
> ChangeSetImpl{resourcesRemoved=[[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']],
> resourcesAdded=[], resourcesModified=[],
> knowledgeDefinitionsRemoved=[]}]//
> // eventListener 1::: ==>[KnowledgeBaseUpdatedEvent:
> org.drools.impl.KnowledgeBaseImpl at 49669be]//
> // eventListener 1::: ==>[AfterChangeSetAppliedEvent:
> ChangeSetImpl{resourcesRemoved=[[FileResource
> file='knowledge\realtimeKnowledge\test.brules.testRule.drl']],
> resourcesAdded=[], resourcesModified=[], knowledgeDefinitionsRemoved=[]}]/
>
> .... and then it was quiet....
>
> Op 31/07/2013 09:42, Davide Sottara schreef:
>> The KA logs to a SystemEventListener, and supports a dedicated event
>> listener for
>> additions/updates/etc...
>>
>> You can do:
>>
>> kagent.setSystemEventListener( new PrintStreamSystemEventListener() );
>> kagent.addEventListener( new DebugKnowledgeAgentEventListener( ) );
>>
>>
>>
>> On 07/30/2013 01:55 AM, De Rooms Brecht wrote:
>>> Dear Drools users,
>>>
>>> I have been testing with the KnowledgeAgent from version 5.4 and 5.5. It
>>> monitors a changeset and is set to incrementally build the
>>> knowledgebase. I noticed that it sometimes crashes but never throws out
>>> errors. This happens for example when I define a type two times and when
>>> I remove a file. Does anyone experience similar behaviour and has an
>>> idea of how I could see the errors? I already tried to check the errors
>>> by building it myself using a knowledgebuilder before I update the file
>>> that the knowledgeAgent monitors but that's quite a dirty solution.
>>>
>>> Kind Regards,
>>> De Rooms Brecht
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
>
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