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Jobqueue internals question
http://forum.linhes.org/viewtopic.php?f=17&t=17136		 Page 1 of 1
Author:  grante [ Tue Oct 30, 2007 8:30 am ]
Post subject:  Jobqueue internals question
Since there don't seem to be any further ideas on how to get
auto-transcoding to work http://www.mysettopbox.tv/phpBB2/viewtopic.php?t=17122 ,
I've started researching how to set up a user-job to queue a
transcoding job. Yesterday I posted to the mythtv-users
mailing list a couple questions on how the job-queue works. The
S/N ratio in that list is pretty low, so it's no surprise that
I didn't get an answer.

Hopefully there's a KM user who knows.

What's the "normal" initial state for the command and status
fields? Should they be set to RUN and UNKNOWN, respectively?

If I want to queue a job but don't want the job to run right
away, what should I set the cmds and flags fields to when I
create the job? My guesses are:
Code:
   cmds  flags
   STOP  UNKNOWN
   STOP  ABORTED
   STOP  CANCELLED

And then when I later want to enable the job, do I set the cmds
field to RUN or RESTART or ?.
Author:  grante [ Thu Nov 01, 2007 8:47 am ]
Post subject: 
I did some experimenting with the job queue, and it appears the
way to queue a job normally is with cmds=RUN and status=QUEUED
(I should have been talking about status instead of flags in my
previous posting).

If you don't want the job to be run, queuing it with cmds=RUN
and status=CANCELED seems to work. Later, when you want to
enable the job, you change the status to QUEUED.

So, the plan is to write a user-job that does the following: If
a recording is HD, queue an immediate transcode job
(status=QUEUED). If a recording is SD, queue a deferred
(status=CANCELED) transcode job.

Then I'll set up an hourly crontab entry that checks the job
queue periodically and enables any transcode jobs that have
been deferred for more than 48 hours. [Deferring transcoding
for 48 hours avoids wasting energy transcoding shows that are
viewed and deleted right away.]
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