Backgroundrb devel - Apr 2008 - scheduling worker methods in rails

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Hi,

i''m trying desperately to schedule some worker methods within rails
2.0.2. The
problem is, both methods don''t even get called by BackgrounDRb.

my background.yml:
> ---
> :backgroundrb:
>   :port: 11006
>   :ip: 0.0.0.0
> ---
> :schedules:
>   :server_worker:
>     :update:
>       :trigger_args: 1 * * * * * *
>   :monitoring_worker:
>     :check_services:
>       :trigger_args: */10 * * * * * *
Both Worker gets automatically started if BackgroundRb starts. I want the
server_worker to start an update-method every minute, the monitoring_worker to
check every 10 seconds if the server is still running.
Between two calls both worker are stopped (or sleeping), the creation and the
different tasks are shorter than the interval (if that matters)

At another point i''m trying to schedule a Task via a
MiddelMan.new_worker within
rails:
> MiddleMan.new_worker(:worker => :account_worker, :job_key => id,
:data => id,\
:schedule => { :calculate => { :trigger_args => "*/5 * * * * *
*", :data => id \ }})

With this call, the method don''t even get executed (tested with
logger.info as
first line to see if a message gets written in the log-file).
> def calculate(id = nil)
>   logger.info("#{Time.now}: calculate")
> end
The creation of a worker instance works fine, only the scheduled Part dont gets
executed.
So my assumption is, that the trigger_args are wrong, but i checked everything a
thousend times and maybe i dont see the wood for the trees (maybe I have to
sleep a litte bit more ;) )


Even the backgroundrb_11006_debug.log don''t say anything i can use to
find the
error:
> 00000012{
> :       type:start_worker:
> schedule{:calculate{:trigger_args"*/5 * * * * * *:      data"6:
>                                                                job_key@ ;
>                                                                          @
> {:data=>"6", :worker=>:account_worker,
:type=>:start_worker, :job_key=>"6",\
:schedule=>{:calculate=>{:data=>"6",
:trigger_args=>"*/5 * * * * * *"}}}

Everything happens on Ubuntu Linux 7.10
> ak at ak-laptop:~$ uname -r
> 2.6.22-14-generic
with BackgroundRb 1.0.3,

rails:
> ak at ak-laptop:~$ rails -v
> Rails 2.0.2
and Ruby:
> ak at ak-laptop:~$ ruby -v
> ruby 1.8.6 (2007-06-07 patchlevel 36) [i486-linux]
I hope someone can point me to the source of my Problems.

Thanks

Andi

P.S. excuse my poor english, i hope you understand my needs ;)
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On Wed, 2008-04-02 at 23:06 +0200, sQware.de wrote:
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> Hash: SHA1
> 
> Hi,
> 
> i''m trying desperately to schedule some worker methods within
rails 2.0.2. The
> problem is, both methods don''t even get called by BackgrounDRb.
> 
> my background.yml:
> 
> > ---
> > :backgroundrb:
> >   :port: 11006
> >   :ip: 0.0.0.0
> > ---
> > :schedules:
> >   :server_worker:
> >     :update:
> >       :trigger_args: 1 * * * * * *
> >   :monitoring_worker:
> >     :check_services:
> >       :trigger_args: */10 * * * * * *
> 
> Both Worker gets automatically started if BackgroundRb starts. I want the
> server_worker to start an update-method every minute, the monitoring_worker
to
> check every 10 seconds if the server is still running.
> Between two calls both worker are stopped (or sleeping), the creation and
the
> different tasks are shorter than the interval (if that matters)
> 
> At another point i''m trying to schedule a Task via a
MiddelMan.new_worker within
> rails:
> 
> > MiddleMan.new_worker(:worker => :account_worker, :job_key => id,
:data => id,\
> :schedule => { :calculate => { :trigger_args => "*/5 * * * *
* *", :data => id \ }})
> 
> With this call, the method don''t even get executed (tested with
logger.info as
> first line to see if a message gets written in the log-file).
> 
> > def calculate(id = nil)
> >   logger.info("#{Time.now}: calculate")
> > end
> 
> The creation of a worker instance works fine, only the scheduled Part dont
gets
> executed.
> So my assumption is, that the trigger_args are wrong, but i checked
everything a
> thousend times and maybe i dont see the wood for the trees (maybe I have to
> sleep a litte bit more ;) )
> 
> 
> Even the backgroundrb_11006_debug.log don''t say anything i can use
to find the
> error:
> > 00000012{
> > :       type:start_worker:
> > schedule{:calculate{:trigger_args"*/5 * * * * * *:     
data"6:
> >                                                               
job_key@ ;
> >                                                                       
@
> > {:data=>"6", :worker=>:account_worker,
:type=>:start_worker, :job_key=>"6",\
> :schedule=>{:calculate=>{:data=>"6",
:trigger_args=>"*/5 * * * * * *"}}}
> 
> Everything happens on Ubuntu Linux 7.10
> > ak at ak-laptop:~$ uname -r
> > 2.6.22-14-generic
> with BackgroundRb 1.0.3,
> 
> rails:
> > ak at ak-laptop:~$ rails -v
> > Rails 2.0.2
> 
> and Ruby:
> > ak at ak-laptop:~$ ruby -v
> > ruby 1.8.6 (2007-06-07 patchlevel 36) [i486-linux]
> 
> I hope someone can point me to the source of my Problems.
> 
> Thanks
> 
> Andi
> 
If you don''t mind, I will be only be able to look in this in detail
when
I reach home.  Your configuration looks alright.

Also, are you telling us that, even plain scheduled worker scheduled
through config file are not being scheduled?

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hemant kumar schrieb:
> Also, are you telling us that, even plain scheduled worker scheduled
> through config file are not being scheduled?
Right, with the background.rb-file cited above the schedules dont work.

The Server- and the Monitoring- Workers get automatically started when i start
backgroundrb. The create-methods are working without problems ... also if i call
the update or check_services methods from within the according create-method
everything works fine ... only the triggers dont fire ...

I updated all gems (sudo gem update --system), doublechecked if all necessary
dependencies are installed (chronic and packet) ... everything ok ...

I also tested a completly new worker with following settings:

backgroundrb.yml:
> ---
> :backgroundrb:
>   :port: 11006
>   :ip: 0.0.0.0
> ---
> :schedules:
>   :hello_worker:
>     :worker_method: say
>       :trigger_args: 0 * * * * * *
hello_worker:
> class HelloWorker < BackgrounDRb::MetaWorker
>   set_worker_name :hello_worker
>   def create(args = nil)
>     # this method is called, when worker is loaded for the first time
>     logger.info("#{Time.now}. worker started")
>   end
>   def say(args = "hello")
>     logger.info("#{args} again, its #{Time.now}")
>   end
> end
in backgroundrb_11006.log:
> Thu Apr 03 18:19:35 +0200 2008. worker started
> hello_worker started
> Schedules for worker loaded
thats all ... so i think, the trigger don''t gets fired. Do you have a
clue,
where i might have an error, or is there an error in trunk?

Unfortunaly there is no error logged in any of the logfiles, so i can not hunt
it ;)


many thanks for helping

Andi
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