Backgroundrb devel - Aug 2006 - making backgroundrb cron

Hello,
i need to have some jobs scheduled in the background and executed at
specific times. I wanted to make a worker who does that - and it works a
little bit - but i had an enlightment... why not make bgdrb itself play that
role? i mean, the MiddleMan has already everything needed! a timer thread,
currently used only for deleting old workers and the workers itself. since
im not familiar with threads, are ther some things i could break by adding a
few options to backgroundrb.yml and a worker start in the
MiddleMan#start_timer? or am i the only one who needs that so comiting it
would be senseless? (but i dont think since i have at least two of my
projects where i would need such a facility)

and if so, how could the configuration be done? best would be something that
can be changed and added by runtime while being preserved over various
starts and stops... or something of rails magic:

class FooWorker < BackgrounDRb::Rails
  repeat_every 24.hours
  start_at tomorrow.midnight

  def do_work
    @logger.info ''i will appear on midnight every day from
now!''
  end
end

but since thats magic, i dont really know how that would work, but its more
the rails way than an entry in backgroundrb.yml i think

what do you think of it?

-- 
Michael Siebert <info at siebert-wd.de>

www.stellar-legends.de - Weltraum-Browsergame im Alpha-Stadium
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Take a look at rails_cron -- however, I''m with you in that you could
probably combine these projects easily -- making backgroundrb the
system of record.  I''m not sure the state of rails_cron development
these days.  Configuration for rails_cron is a db table and a process
that polls every minute.

If you commit/patch, I''d be happy to test/contribute as well!
-- 
Charles Brian Quinn
self-promotion: www.seebq.com
highgroove studios: www.highgroove.com
slingshot hosting: www.slingshothosting.com

On 8/1/06, Michael Siebert <info at siebert-wd.de>
wrote:
> Hello,
> i need to have some jobs scheduled in the background and executed at
> specific times. I wanted to make a worker who does that - and it works a
> little bit - but i had an enlightment... why not make bgdrb itself play
that
> role? i mean, the MiddleMan has already everything needed! a timer thread,
> currently used only for deleting old workers and the workers itself. since
> im not familiar with threads, are ther some things i could break by adding
a
> few options to backgroundrb.yml and a worker start in the
> MiddleMan#start_timer? or am i the only one who needs that so comiting it
> would be senseless? (but i dont think since i have at least two of my
> projects where i would need such a facility)
>
> and if so, how could the configuration be done? best would be something
that
> can be changed and added by runtime while being preserved over various
> starts and stops... or something of rails magic:
>
> class FooWorker < BackgrounDRb::Rails
>   repeat_every 24.hours
>   start_at tomorrow.midnight
>
>   def do_work
>     @logger.info ''i will appear on midnight every day from
now!''
>   end
> end
>
> but since thats magic, i dont really know how that would work, but its more
> the rails way than an entry in backgroundrb.yml i think
>
> what do you think of it?
>
> --
> Michael Siebert <info at siebert-wd.de>
>
> www.stellar-legends.de - Weltraum-Browsergame im Alpha-Stadium
> _______________________________________________
> Backgroundrb-devel mailing list
> Backgroundrb-devel at rubyforge.org
> http://rubyforge.org/mailman/listinfo/backgroundrb-devel
>
>

damn i forgot to cc the list... (thanks charles for telling me)
here it is

---------- Forwarded message ----------
From: Michael Siebert <info at siebert-wd.de>
Date: 01.08.2006 17:27
Subject: [PATCH] making backgroundrb cron
To: Charles Brian Quinn <me at seebq.com>

It wasnt a too hard thing to do. Heres the Patch for
vendor/plugins/backgroundrb/backgroundrb.rb
You declare a worker to be a repetitive one by doing this in your worker
class:

class FooWorker < BackgrounDRb::Rails
   repeat 24.hours
   start_first tomorrow.midnight


   def do_work
     @ logger.info ''i will appear on midnight every day from
now!''
   end
end

now the task is started next midnight and repeated every 24 hours.
start_first even takes "17:00" and stuff (everything Time#parse can
parse).you should even be able to control thestart time and interval via the
methods #next_start and #interval (they''re attr_accessors)
for me its working perfectly, but a little bit of testing would sure be good
did i mention that i love bgdrb more and more every day i find a new thing
it can work out for me?

-- 

Michael Siebert < info at siebert-wd.de>

www.stellar-legends.de - Weltraum-Browsergame im Alpha-Stadium



-- 
Michael Siebert <info at siebert-wd.de>

www.stellar-legends.de - Weltraum-Browsergame im Alpha-Stadium
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