[rules-users] Problem using KnowledgeAgent

[Dan Seaver]

Mark,
I have some more information for you. The exception occurs when I issue:

agent.monitorResourceChangeEvents(true|false)

If I comment out that code, I don't get the exception, but I don't get
changes either. I tried it with both the Guvnor repository and with a
deployed package on the file system.

I won't have time to create the test you requested until the weekend. Let me
know if you still want it.

Dan


Mark Proctor wrote:
> 
> Dan Seaver wrote:
>> I setup a KnowledgeAgent using the example code in the JavaDoc for
>> KnowledgeAgentFactory to access a compiled package in Guvnor. The package
>> runs fine, but changes to the package are not picked up. I believe this
>> is
>> due to the ChangeSet notification thread being interrupted. But why?
>>   
> Hmm that's not good. I have the following unit test:
> http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/agent/KnowledgeAgentTest.java
> 
> Could you provide an update for new tests for detecting url changes? 
> When making the test you might find it easier to look at the previous 
> ruleagent tests:
> http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-core/src/test/java/org/drools/agent/URLScannerTest.java
> 
> Mark
>> Also, I'm getting some messages about failing to read schema document. I
>> think it is caused by the xml for the ChangeSet, but I'm using the
>> example
>> from the JavaDocs.
>>   
> We haven't provided an XSD yet, so it'll provide schema validation 
> issues, those can be ignored.
>> Here's a snippet from the log:
>>
>> [2009:02:48 23:02:905:info] KnowledegAgent has started listening for
>> ChangeSet notifications
>> [2009:02:48 23:02:905:info] KnowledgAgent created, with configuration:
>> monitorChangeSetEvents=true scanResources=true scanDirectories=true
>> [2009:02:48 23:02:905:exception 
>> java.lang.RuntimeException: KnowledgeAgent ChangeSet notification thread
>> has
>> been interrupted
>> 	at
>> org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:465)
>> 	at java.lang.Thread.run(Unknown Source)
>> Caused by: java.lang.InterruptedException
>> 	at
>> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(Unknown
>> Source)
>> 	at
>> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown
>> Source)
>> 	at java.util.concurrent.LinkedBlockingQueue.take(Unknown Source)
>> 	at
>> org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:463)
>> 	... 1 more
>> [2009:02:48 23:02:937:info] KnowledegAgent has stopped listening for
>> ChangeSet notifications
>> (null: 1, 207): schema_reference.4: Failed to read schema document
>> 'drools-change-set-5.0.xsd', because 1) could not find the document; 2)
>> the
>> document could not be read; 3) the root element of the document is not
>> <xsd:schema>.
>> (null: 1, 207): cvc-elt.1: Cannot find the declaration of element
>> 'change-set'.
>> (null: 1, 216): schema_reference.4: Failed to read schema document
>> 'drools-change-set-5.0.xsd', because 1) could not find the document; 2)
>> the
>> document could not be read; 3) the root element of the document is not
>> <xsd:schema>.
>> (null: 1, 343): schema_reference.4: Failed to read schema document
>> 'drools-change-set-5.0.xsd', because 1) could not find the document; 2)
>> the
>> document could not be read; 3) the root element of the document is not
>> <xsd:schema>.
>> [2009:02:48 23:02:390:info] KnowledgAgent applying ChangeSet
>>
>>   
> 
> 
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