[Hawkular-dev] availability and metric endpoints

[Heiko W.Rupp]

On 20 Mar 2015, at 17:23, Lukas Krejci wrote:

> Isn't metrics going to store "events" eventually, too? Those would be 
> textual,
> wouldn't they?
>
> Also, IMHO, even config could be stored in metrics. Even though that 
> is a bit
> of a stretch, configuration is after all a time series of structured 
> data...

If so, would we need to rename this to Hawkular-storage (?) :-)

Seriously, I think we should consider better decoupling the actual 
storage from
api and semantics. Sounds probably pretty strange, so let me explain:
If we consider everything a "metric" we are sucking in more and more
dependencies into metrics or vice versa. But in fact (and we are seeing
it with the availability discussion), items like availability / computed 
resource state,
inventory data, ... have a semantic that differs a lot from metrics.

We may still want to store all that in Cassandra, but not necessarily in 
the
same place inside it. And even less have one api "POST /stuff" where 
people
throw everything at, but rather specialized ones.