On 12/08/2013, Elran Dvir <elrand(a)checkpoint.com> wrote:
Hi Wolfgang,
Thanks for your quick response.
Which aspect of the requirement is hazy?
I'll be happy to clarify.
Are you prepared to write a (small) set of individual rules for each
set of parameters like the one in your example?
What should happen if the last T1-interval of T2 fulfills the
condition of creating a "new event" with the same set of parameters?
Or the first T2-interval after the end of T2?
Should the initial condition be observed in a sliding window?
Anyway, the features are as I've enumerated them, and I see no reason
why it shouldn't be possible to do this in Drools.
-W
Thanks.
From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Wolfgang Laun
Sent: Sunday, August 11, 2013 5:41 PM
To: Rules Users List
Subject: Re: [rules-users] Is my use case suuported in Drools?
You should look into the Expert and Fusion manuals, especially:
Expert for the syntax and most features,
sliding "window" in Fusion,
"timer" in Expert,
"accumulate" and "from collect" in Expert.
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.
-W
On 11 August 2013 09:57, Elran Dvir
<elrand@checkpoint.com<mailto:elrand@checkpoint.com>> wrote:
Hi all,
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:
I would like to create a new event based on multiple events (all of the same
type meeting a set of conditions) occurring over a given period of time T1.
For each combination of values for fieldA and fieldB, a new group of event
candidates should be opened (fieldA and fieldB are group by fields. Each
combination of values of these fields, should be treated separately).
The event should be created when at least X events occurred over the period.
Count the events based on unique 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).
If all conditions described above are met, create the desired new event. The
new event will stay open for duration of T2, and update will be sent for it
every T3.
Aside from the above, I need an aggregation function (besides count) of
"collect" : in the new event the value of fieldE will be the collection of
(preferably distinct) values of fieldE in originating events.
Example:
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).
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.
Thanks a lot.
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