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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Wolfgang,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks for your quick response.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Which aspect of the requirement is hazy?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’ll be happy to clarify.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span 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>Wolfgang Laun<br>
<b>Sent:</b> Sunday, August 11, 2013 5:41 PM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Is my use case suuported in Drools?<o:p></o:p></span></p>
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<p class="MsoNormal">You should look into the Expert and Fusion manuals, especially:
<o:p></o:p></p>
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<p class="MsoNormal">Expert for the syntax and most features,<o:p></o:p></p>
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<p class="MsoNormal">sliding "window" in Fusion,<o:p></o:p></p>
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<p class="MsoNormal">"timer" in Expert,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">"accumulate" and "from collect" in Expert.<o:p></o:p></p>
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<p class="MsoNormal">Your text is a little too hazy to try and concoct a set of rules demonstrating what needs to be done - they may be off in more than one respect.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-W<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On 11 August 2013 09:57, Elran Dvir <<a href="mailto:elrand@checkpoint.com" target="_blank">elrand@checkpoint.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi all,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I am new to drools and I’m trying to understand whether the following use case is supported – any help on the following will be greatly appreciated:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I would like to create a new event based on
<b>multiple</b> events (all of the same type meeting a set of conditions) occurring
<b>over a given period of time T1</b>.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">For each combination of values for fieldA and fieldB, a new group of event candidates should be opened (fieldA and fieldB are
<b>group by</b> fields. Each combination of values of these fields, should be treated separately).<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The event should be created when
<b>at least X events</b> occurred over the period. Count the events based on <b>unique</b> values of fieldC and fieldD (for a given combination of fieldA and fieldB, if you notice an event with already existing values of the combination of fieldC and fieldD,
it should not be counted).<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">If all conditions described above are met, create the desired new event.
<b>The new event will stay open for duration of T2, and update will be sent for it every T3.</b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b> </b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Aside from the above, I need an
<b>aggregation function (besides count) of “collect”</b> : in the new event the value of fieldE will be the collection of (preferably distinct) values of fieldE in originating events<b>. </b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b> </b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Example:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Port scan event – the basic event is connection. For each combination of source_ip and destination_ip (group by fields), detect a port scan event if over a minute (T1) there more
than 20 (X) events with different ports (unique field).<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The event will stay open for 10 minutes (T2) and an update will be sent every 1 minute (T3). Every update will contain the count of events, source_ip, destination_ip and collection
of services.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b> </b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks a lot.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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