[INSTRM-28] Provide an id object to track site, camera, spectrograph, etc. Created: 01/Dec/16  Updated: 11/Jan/19  Resolved: 11/Jan/19

Status: Done
Project: Instrument control development
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major
Reporter: cloomis Assignee: cloomis
Resolution: Done Votes: 0
Labels: SM1
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Blocks
blocks INSTRM-119 Move device configuration into ics_co... Won't Fix
Story Points: 2
Epic Link: Red channel perf test
Sprint: 2019 B
Reviewers: arnaud.lefur

 Description   

The image acquisition actors need to know their "site" in order to set the file prefix (PF$(site)A). Besides that, several actors need to know what camera/dewar/spectrograph they are connected to.

I think I'll make a pfscore module in tron_actorcore for these kinds of things. I'm using a SpectroIds class in the ccd actor which I'll move over for a start. By default the identity is picked up from the hostname (e.g. bee_r1.pfs), but can be overridden. The site cannot be deduced in that way, so right now I'm using a $PFS_SITE environment variable.

 Comments   
Comment by shimono [ 01/Dec/16 ]

One possibility could be to set in domain part of FQDN from DHCP, like bee_r1.pfs_lam...?

Comment by cloomis [ 16/Mar/17 ]

Nice idea, but I think it would be useful to have a common domain. In the end I added a TXT record, yielding "J", "L", "S", etc.

Comment by shimono [ 29/Mar/17 ]

Need some lines to be copied into INSTRM-71 for details of TXT record.

Comment by shimono [ 18/Apr/17 ]

a line has added in dnsmasq configuration requirement at INSTRM-71.

Comment by cloomis [ 23/Jun/17 ]

Proof-of-concept committed. Since he needs to use it I'm asking Arnaud to review.

Comment by arnaud.lefur [ 23/Jun/17 ]

This seems good to me.
But i'm not sure how it can be used from enu since I only care about specModule, and specNum.
I can also deduce that from the hostname, but I need to rewrite hostnameId function

def hostnameId():
    hostname = socket.gethostname()
    hostname = os.path.splitext(hostname)[0]
    _, hostid = hostname.split('enu')
    return hostid
Comment by cloomis [ 11/Jan/19 ]

Merged at 94d87aa, tagged 1.9.7

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