[rules-users] Problem using KnowledgeAgent

Fri Feb 20 00:54:52 EST 2009

Thanks for the clarification, Mark. 

I followed your links to get the latest of the greatest. Happy to see
all those blue circles in the build history. I downloaded:

drools-5.0.0.SNAPSHOT-eclipse-all.zip
drools-5.0.0.SNAPSHOT-guvnor.zip

Then I updated eclipse with the contents of ...eclips-all.zip, Started
eclipse and created a new runtime (which I put in my
jboss/server/default/lib folder and verified that the ones I had
installed there before were changed). I replaced the M5 version of
guvnor with the new one, and restarted everything.

That should be all I need to do, right? Been at this for a while, so I
may be having a mental lapse.

Anyways, several projects that I could build before the upgrade don't
build anymore. The build process hangs in Guvnor, as well as in Eclipse.

This is the last output I get in the server's log when trying to compile
the package I'm using for our test:
21:27:25,132 INFO [STDOUT] DEBUG 19-02 21:27:25,132
(SelectorManager.java:<init>:27) Loading selectors

21:27:25,195 INFO [STDOUT] DEBUG 19-02 21:27:25,195
(ContentManager.java:<init>:45) Loading content properties

The last thing I see in Eclipse when I try a complete clean on our
primary application is:

    Building Workspace - Building all...: Invoking "Drools Builder' on
'/cbo-ejb'.

The status shows 46% complete and just hangs there.

I think it's time for a cocktail and a nice long sleep. I'll check in
tomorrow before rolling back to M5.

Dan

________________________________

From: Mark Proctor [mailto:mproctor at codehaus.org] 
Sent: Thursday, February 19, 2009 3:25 PM
To: Rules Users List
Subject: Re: [rules-users] Problem using KnowledgeAgent

On the left side you see a list of red and blue circles, red indicates
that build was a failure and blue a success:
https://hudson.jboss.org/hudson/job/drools/

The last successful build has it's artifacts at:
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/
trunk/target/

As you can see the last build was successful so now you can get all the
binaries from above.

Mark
Edson Tirelli wrote: 

	   The tests are fixed and committed to revision #25353.

	   []s
	   Edson

	2009/2/19 Mark Proctor <mproctor at codehaus.org>

		Dan Seaver wrote: 

			Yes, the exception occurs on both the filesystem
and Guvnor, and it happens
			whether I set the value to true or false.

		I found the issue and reviewed the agent code and this
has been fixed in trunk. Edson si just fixing two failing tests, but as
soon as the build turns blue again grab the latest artifact builds and
give it a try:
		https://hudson.jboss.org/hudson/job/drools/

		Mark 

			Michael Neale wrote:

				So from the filesystem it won't pick up
changes? (does it throw the
				same exception).

				On Thu, Feb 19, 2009 at 5:34 AM, Dan
Seaver <dan.seaver at ge.com> <mailto:dan.seaver at ge.com>  wrote:

				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.r
un(KnowledgeAgentImpl.java:465)
				     at java.lang.Thread.run(Unknown
Source)
				Caused by:
java.lang.InterruptedException
				     at

java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.re
portInterruptAfterWait(Unknown
				Source)
				     at

java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.aw
ait(Unknown
				Source)
				     at
java.util.concurrent.LinkedBlockingQueue.take(Unknown Source)
				     at

org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.r
un(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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				Michael D Neale
				home: www.michaelneale.net
				blog: michaelneale.blogspot.com

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	-- 
	 Edson Tirelli
	 JBoss Drools Core Development
	 JBoss, a division of Red Hat @ www.jboss.com

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