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Re: [milo-dev] Adding historian support

Hi Kevin, thank you. Yes, I see the history service is not there and actually i don't know how it should implemented to be compliant (I image there is something to implement at the name space level and which needs to strictly work with the storage). Anyway I would like to start to push values in a time series database for specific nodes that need to be "traced", nothing else.

(I'm just playing with a basic server implementation).

Populating a time series database is at moment enough to have Grafana playing with the field data. :-)  

--
ing. Stefano Lissa


Il giorno ven 29 mar 2019 alle ore 16:30 Kevin Herron <kevinherron@xxxxxxxxx> ha scritto:
Stefano,

That would be a piece of what's needed, assuming you're updating those nodes as they change.

You would also have to implement this history services yourself, which is definitely a non-trivial task. The SDK does not do anything for you in regards to the history.

On Fri, Mar 29, 2019 at 8:27 AM Stefano Lissa <satollo@xxxxxxxxx> wrote:
Hi, if I want to add historian support to node marked as historizing->true, should I provide an observer attached to the value change and then persist the value?

Is this the correct way in Milo?

Thank you!

--
ing. Stefano Lissa
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