Re: [Hawkular-dev] Sending data to metrics via Pinger - bus? REST?
If we are now going to allow metrics and inventory data to be sent over the bus for
storage (in addition to REST) we should consider then also updating the wildfly agent to
use the bus WHEN EMBEDDED in the server. This would avoid the agent making REST calls to
itself (that is, to the same WF server it is running in). Since the agent would be
embedded in a full hawkular container, it could just put message on the bus rather than
send REST messages. Only when the agent is running standalone or in another external WF
should it send REST messages.
BTW: I thought the pinger was throw-away code and was to be re-implemented the
"correct" way by the time hawkular GA is released ;-)
----- Original Message -----
With the latest update of metrics, it seems that the Pinger is now
broken: Metrics is now protected via Accounts, meaning that REST calls
would need to include auth data, which are not available to pinger.
Pinger is a process that runs on Hawkular server, so, either we would
need to get a token from users when they first request an URL to be
monitored, or we would need to somehow send data to Metrics "directly".
Of course, the bus comes to my mind. I'm sure this was discussed at
length before, but I just want to catch up on the current state of things.
My understanding is that Pinger would send a "PingerResult" to a topic,
where interested parties would be listening. Inventory and Metrics would
be such parties: a Topic Listener on each of those components would be
responsible for doing inventory-specific and metrics-specific logic.
The question, though, is: where would this code reside? Heiko's idea is
that this would be part of a "glue", ie, a code "somewhere inside
Hawkular". In my view, the glue is the bus, so, this should reside
within the component itself. In metrics case, the listener would
probably be inside the "hawkular-component" module. The code on
"hawkular-component" would just listen to this topic and call
MetricsService.
What would be the most appropriate way to have the pinger's results
stored in metrics?
- Juca.
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