[Backgroundrb-devel] Recommendations for eternally-running backgroundrb workers?

[Mason Hale]

Jack -- you can use the scheduler to fire up long-running processes.

Just don't specify a repeat interval.

You backgroundrb_schedules.yml file should look something like:

my_worker:
   :class: :polling_worker
   :job_key: :my_worker
   :worker_method: :do_work
   :worker_method_args:
placeholder
   :trigger_args:
     :start: <%= Time.now + 1.seconds %>

On 5/22/07, Jack Nutting <jnutting at gmail.com> wrote:
>
> I've got some workers that I want to have running all the time.  Right
> now I'm just launching them manually, by requesting a special page in
> my rails app that includes lines like:
>
>       MiddleMan.new_worker(:class=> :receiver, :job_key=>:r,
> :args=>{:sleep_time=>10})
>
> This strikes me as a really weak way to fire up my workers.  I
> basically want to automate things so that these will be started by a
> script in /etc/rc?.d.  It seems like using the backgroundrb scheduler
> is not a possibility, since do_work never returns from my workers
> (each of them runs in an infinite loop, polling the database
> periodically to look for work).  So it looks like I need another
> startup script, running after the rest of the system is up, that does
> one of these things:
>
> - use curl or wget to hit my special worker-starting page (how lame is
> that?)
> - pipe my MiddleMan.new_worker calls into a "script/backgroundrb
> console" or just "script/console" session (is that any better?)
>
> As you can see, neither of these options seems very appealing to me.
> I can't be the first person to do this...  How are others handling
> this?
>
> --
> // jack
> // http://www.nuthole.com
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