[rules-users] Is my use case suuported in Drools?

[Elran Dvir]

Hi,

I am prepared to write as many rule sets needed for each required use case. 
I'll try to clarify the use case:
If an event meeting a set of conditions is detected (in the example, any connection event), a new (sliding) window of events candidates will be opened for T1.
The window will be opened based on "group by fields" - any event  with the same group by fields' within the time frame values should go the matching window.
So, at any given time there will be as  many windows as there were unique combination of "group by" fields values in last T1.
For any window, the events will be counted only for unique values of predefined unique fields.

Maybe the semantics  of creation of new event was confusing.
Instead of creating new event, let's simply it and say I want to print the data.   
Once the count threshold (X) is reached,  I would like to print the data of originating events  and extend the window with time of T2.
I would like to print an update of the data of all originating events arrived so far every T3 (this feature is the least important. I can just print the summary of all accumulated data in the end of T2).

Is this behavior supported?

I hope it's clearer now.
If needed, I will be happy to elaborate.

Thanks a lot.

-----Original Message-----
From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Wolfgang Laun
Sent: Monday, August 12, 2013 8:50 PM
To: Rules Users List
Subject: Re: [rules-users] Is my use case suuported in Drools?

On 12/08/2013, Elran Dvir <elrand at 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 at lists.jboss.org
> [mailto:rules-users-bounces at 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 at checkpoint.com<mailto:elrand at 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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