[rules-users] Problem using KnowledgeAgent
Mark Proctor
mproctor at codehaus.org
Fri Feb 20 20:12:04 EST 2009
I've isolated the problem to an MVEL regression, I've added a unit test
and the MVEL author will fix it ASAP.
public void testInfiniteLoop() {
String str = "";
str += "int insuranceAmt = caseRate + (charges * pctDiscount /
100); \n";
str += "update (estimate); \n";
Map<String, Macro> macros = new HashMap<String, Macro>();
macros.put( "update",
new Macro() {
public String doMacro() {
return "drools.update";
}
} );
String result = parseMacros( str, macros);
str = "";
str += "int insuranceAmt = caseRate + (charges * pctDiscount /
100); \n";
str += "drools.update (estimate); \n";
assertEquals( str, result );
}
Mark
Seaver, Daniel (GE Healthcare) wrote:
> 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
>> <mailto: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$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:465)
>>>>>>> at java.lang.Thread.run(Unknown Source)
>>>>>>> Caused by: java.lang.InterruptedException
>>>>>>> at
>>>>>>> java.util.concurrent.locks.AbstractQueuedSynchronizer$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
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> _______________________________________________
>>>>>> rules-users mailing list
>>>>>> rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org>
>>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>>
>>>>>>
>>>>>>
>>>>> --
>>>>> View this message in context:
>>>>> http://www.nabble.com/Problem-using-KnowledgeAgent-tp22073944p22085204.html
>>>>> Sent from the drools - user mailing list archive at Nabble.com.
>>>>>
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>> rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org>
>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>
>>>>>
>>>> --
>>>> Michael D Neale
>>>> home: www.michaelneale.net <http://www.michaelneale.net>
>>>> blog: michaelneale.blogspot.com <http://michaelneale.blogspot.com>
>>>> _______________________________________________
>>>> rules-users mailing list
>>>> rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org>
>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>
>>>>
>>>>
>>>
>>
>>
>> _______________________________________________
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>> rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org>
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>>
>>
>> --
>> Edson Tirelli
>> JBoss Drools Core Development
>> JBoss, a division of Red Hat @ www.jboss.com <http://www.jboss.com>
>> ------------------------------------------------------------------------
>>
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>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
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>
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