How to create a new monitor type?

[Guillaume]

Hi,

We want to monitor our application with SCOM 2007 R2. This is a distributed
application, which uses TIBCO Rendezvous (a message oriented middleware used
for real time applications) to communicate between our components. The
application sends regularly heartbeats in a multicast bus to notify the other
components that it's alive. We want to monitor the heartbeats with SCOM and
raise an alert if a heartbeat is missing. We wonder how to do this.

Basically, we would need to have a new type of monitor which would listen
the multicast bus and check that it sees hearbeats each x seconds. We need to
use the Rendezvous API to subscribe to the multicast bus. According to the
SCOM SDK, I understand that we need to develop a new UnitMonitor class. Can
you confirm this? How do you think we can do that?

Thanks in advance for your help.
Guillaume