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<== Date ==> <== Thread ==>

Subject: Re: Button push confirmation
From: Chris Payne <Chris.Payne@triumf.ca>
To: "Chestnut, Ronald P." <ronc@slac.stanford.edu>
Cc: EPICS tech-talk <tech-talk@aps.anl.gov>
Date: Thu, 6 Apr 2006 15:12:19 -0700
On Thu, Apr 06, 2006 at 02:53:08PM -0700, Chestnut, Ronald P. wrote:
> In our legacy system, we often pop up a dialog which asks "Do you really want to do this?", or "Please enter the reason for doing this", or "Who are you and why are you doing this?".
> 
> Does someone do something similar with EDM or other EPICS means? I can think of several ways to implement this, each of which is cumbersome. (Note to Bob: yes, even an SNL program could do it!)

(I'll answer for Rolf since he is on vacation....)

Rolf Keitel has written a Perl Tk application when we require this, which is
presently only for interlock related changes. It authenticates a user against 
an LDAP database, ensures the person is an Operator (and therefore qualified 
to perform the interlock defeat or force) and then logs the comment in a 
device database (Postgres) prior to performing the caput to the PV.

We maintain our own database server, as well as a slave LDAP database so we
do not rely on the central computing infrastructure for this functionality.
So far is has been very reliable (knock wood here).

I'm sure we can make the source available if anyone is interested.

Cheers
Chris
--
Chris Payne			ISAC Operations Controls System Manager
"Relax Snap, this is particle physics, not rocket science."

References:
Button push confirmation Chestnut, Ronald P.

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