Re: Adding additional fields to be archived in "policies.py"

[Gerrit Kühn via Tech-talk <tech-talk at aps.anl.gov>]

Am Fri, 6 Sep 2024 10:34:52 +0000
schrieb Timo Korhonen <Timo.Korhonen at ess.eu>:

> > Maybe the plugin doesn't support this? In that case would could
> > probably fall back on creating an extra channel per device that
> > reflects the error status. Or would the first idea we had (simply
> > adding PVNAME.STAT explicitely to the archiver) work as well?  

> In the meantime, until the requested feature is available in the plugin,
> you can of course use your first idea. That should work, albeit with the
> caveats that I mentioned earlier (non-atomicity). Adding an extra
> channel (=record) should not be necessary.

We tried this meanwhile and added .STAT and .SEVR excplicitely to the
archiver. However, I'm not quite sure what to make of the result:
When unplugging the device, we get
.STAT TIMEOUT
.STAT 10
.SEVR INVALID
.SEVR 3

when using caget on the commandline. However, when looking into the
archiver data, .STAT changes from 0 to 1 while .SEVR stays at 0 all the
time. I would have expected 10 for .STAT and 3 for .SEVR as seen on the
commandline with caget.


cu
  Gerrit

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