[rules-users] Drools Expert: monitor rules & report activity

Wed Aug 4 17:42:01 EDT 2010

It seems to be hard to find documentation about Drools (5.1+) and JMX.
Any articles / documentation available ?

2010/8/3 Quinn, Dan <dequinn at fedex.com>

>  Drools(5.1+) has already added functionality to monitor rule activity in
> your application using JMX. You can turn mbean rule monitoring on either in
> the rulebase’s configuration file(drools.mbeans=enabled||disabled) or you
> can configure it through the command line(-Ddrools.mbeans=enabled||disabled
> I believe).
>
>
>
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Dieter D'haeyere
> *Sent:* Tuesday, August 03, 2010 9:49 AM
>
> *To:* Rules Users List
> *Subject:* Re: [rules-users] Drools Expert: monitor rules & report
> activity
>
>
>
> What I mean with 'all possible cases' is eg. that you will pass your facts
> to the rule engine and that the rule engine will 'return' some result.
> I guess it is perfectly possible that in your test scenario's you covered a
> lot of possible values for those facts but not all of them and that you
> could get some unexpected results afterwards.
> This would mean that your test scenario's / test data were not good
> enough.  But I could imagine that stuff like this happens... At that moment
> you should be able to see what rules were fired in a production environment.
>
> Ik will have a look at the drools execution server.
>
> Dieter.
>
>
>
>  2010/8/3 Swindells, Thomas <TSwindells at nds.com>
>
> Guvnor is a user interface used to define sets of rules, it’s not designed
> to be an actual execution server – the demo test scenarios only work on
> static predefined data, in a real execution environment the input data has
> to be acquired/loaded from somewhere dynamically, hence you always need some
> form of development – though look at the drools execution server to minimize
> this.
>
>
>
> What do you actually mean by covering all possible cases anyway? Possible
> cases of what? What are you trying to detect?
>
>
>
> Thomas
>
>
>
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Dieter D'haeyere
> *Sent:* 03 August 2010 14:35
> *To:* Rules Users List
> *Subject:* Re: [rules-users] Drools Expert: monitor rules & report
> activity
>
>
>
> Ok, this looks like a way to handle it.
> But does this mean that there is no 'out of the box' monitoring possibility
> ?
>
> When deploying a rule base (with Guvnor), I would kind of expect that
> Guvnor is accessible and that it can return some metrics (eg. after
> switching on a monitoring option because I presume continuous logging would
> slow down the system too much).
>
> As I understand it now, some custom development is needed will be needed to
> achieve 'real-time' monitoring.
>
>
>
>
>
>
>
>  2010/8/3 David Sinclair <dsinclair at chariotsolutions.com>
>
> Have a look at the AgendaEventListener. You can use these callbacks to see
> which rules fire and information about them
>
>  void
>
> *activationCancelled<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaEventListener.html#activationCancelled%28org.drools.event.rule.ActivationCancelledEvent%29>
> *(ActivationCancelledEvent<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/ActivationCancelledEvent.html>
>  event)
>
>
>  void
>
> *activationCreated<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaEventListener.html#activationCreated%28org.drools.event.rule.ActivationCreatedEvent%29>
> *(ActivationCreatedEvent<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/ActivationCreatedEvent.html>
>  event)
>
>
>  void
>
> *afterActivationFired<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaEventListener.html#afterActivationFired%28org.drools.event.rule.AfterActivationFiredEvent%29>
> *(AfterActivationFiredEvent<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AfterActivationFiredEvent.html>
>  event)
>
>
>  void
>
> *agendaGroupPopped<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaEventListener.html#agendaGroupPopped%28org.drools.event.rule.AgendaGroupPoppedEvent%29>
> *(AgendaGroupPoppedEvent<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaGroupPoppedEvent.html>
>  event)
>
>
>  void
>
> *agendaGroupPushed<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaEventListener.html#agendaGroupPushed%28org.drools.event.rule.AgendaGroupPushedEvent%29>
> *(AgendaGroupPushedEvent<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaGroupPushedEvent.html>
>  event)
>
>
>  void
>
> *beforeActivationFired<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AgendaEventListener.html#beforeActivationFired%28org.drools.event.rule.BeforeActivationFiredEvent%29>
> *(BeforeActivationFiredEvent<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/BeforeActivationFiredEvent.html>
>  event)
>
>
>
> 2010/8/3 Dieter D'haeyere <dieter.dhaeyere at gmail.com>
>
> @ll,
> I have a question regarding the possibilities to monitor and report on the
> rules activity.
> I have seen that with Drools Guvnor, it is perfectly possible to monitor
> scenario's, see what rules fired, etc.
>
> Now, going further, I have two questions:
> - Is it possible to monitor rule activity (which rules got fired etc) in a
> production situation.  Eg. Is it possible to start recording activity at
> some time until a proble occured and to review the logs afterwards.  This
> would be of use when scenario's are not covering all possible cases.
> - Is it possible to produce reports on rules, usage of rules (eg. what
> rules are fired and what rules were fired most), performance, ...
> And if not, what could be a good starting point to create them ?
>
> My experience with Drools is rather limited.  Let's say that I am
> interested in expert system and technologies surrounding it.  At this moment
> I am getting a 'theoretical' grip on Drools and its possibilities (of
> course, I couldn't help also creating some kind of poc :)  ).
>
> Sincerely,
> Dieter D'haeyere.
>
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