ESPER versus ETALIS: realtime integration with an Event Bus

[José Alegria]

Hi! We have developed a Realtime Operation Information Intelligence
(ROI2) platform which we call "Pulso" (Pulse in Portuguese) which
handles in a sustainable way tens of thousand events a minute, every
hour, every day of the year. We use successfully ESPER as our CEP
engine but we would like to experiment with ETALIS in order to add a
“reasoning” layer to Pulso. After all we come from a Logic Programming
background (from the Portuguese school of Logic Programming). However,
we must be able to feed reliably and in realtime multiple (say up to a
few thousand) event streams to ETALIS. The ideal would be to “feed”
ETALIS in realtime from ActiveMQ topics. Can you provide me with some
references on how to achieve this?

Regards,

José Alegria
Portugal Telecom

[Darko Anicic]

Hi José,

Yes, ETALIS can be used for the purpose you mentioned below.

You can feed ETALIS in real time from ActiveMQ. We have already
created such a connection between ETALIS and ActiveMQ in one previous
project, and it worked (however this is not a part of ETALIS open
source project).
You can do it via a Java interface that we provide for ETALIS. The
interface is called jtalis:
http://code.google.com/p/etalis/source/browse/#svn%2Fjtalis%2Fjtalis-core%253Fstate%253Dclosed

jtalis manual is accessible from:
http://code.google.com/p/etalis/source/browse/jtalis/jtalis-core/doc/Jtalis%20Manual.pdf

Cheers, Darko