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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">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.<o:p></o:p></span></p>
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color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">What do you actually mean by covering all possible cases anyway? Possible cases of what? What are you trying to detect?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Thomas<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:
"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;
font-family:"Tahoma","sans-serif""> rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org]
<b>On Behalf Of </b>Dieter D'haeyere<br>
<b>Sent:</b> 03 August 2010 14:35<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Drools Expert: monitor rules & report activity<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Ok, this looks like a way to handle it.<br>
But does this mean that there is no 'out of the box' monitoring possibility ?<br>
<br>
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).<br>
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As I understand it now, some custom development is needed will be needed to achieve 'real-time' monitoring.<br>
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<p class="MsoNormal">2010/8/3 David Sinclair <<a href="mailto:dsinclair@chariotsolutions.com">dsinclair@chariotsolutions.com</a>><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Have a look at the AgendaEventListener. You can use these callbacks to see which rules fire and information about them<o:p></o:p></p>
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<p class="MsoNormal"><code><b><span style="font-size:10.0pt"><a href="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" target="_blank">activationCancelled</a></span></b></code><code><span style="font-size:10.0pt">(<a href="http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/ActivationCancelledEvent.html" target="_blank" title="interface in org.drools.event.rule">ActivationCancelledEvent</a> event)</span></code>
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<p class="MsoNormal"><code><b><span style="font-size:10.0pt"><a href="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" target="_blank">activationCreated</a></span></b></code><code><span style="font-size:10.0pt">(<a href="http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/ActivationCreatedEvent.html" target="_blank" title="interface in org.drools.event.rule">ActivationCreatedEvent</a> event)</span></code>
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<p class="MsoNormal"><code><b><span style="font-size:10.0pt"><a href="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" target="_blank">afterActivationFired</a></span></b></code><code><span style="font-size:10.0pt">(<a href="http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/event/rule/AfterActivationFiredEvent.html" target="_blank" title="interface in org.drools.event.rule">AfterActivationFiredEvent</a> event)</span></code>
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<p class="MsoNormal">2010/8/3 Dieter D'haeyere <<a href="mailto:dieter.dhaeyere@gmail.com" target="_blank">dieter.dhaeyere@gmail.com</a>><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">@ll,<br>
I have a question regarding the possibilities to monitor and report on the rules activity.<br>
I have seen that with Drools Guvnor, it is perfectly possible to monitor scenario's, see what rules fired, etc.<br>
<br>
Now, going further, I have two questions:<br>
- 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.<br>
- Is it possible to produce reports on rules, usage of rules (eg. what rules are fired and what rules were fired most), performance, ...
<br>
And if not, what could be a good starting point to create them ?<br>
<br>
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 :) ).<br>
<br>
Sincerely,<br>
<span style="color:#888888">Dieter D'haeyere.<br>
<br>
</span><o:p></o:p></p>
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