Hi,
While playing with scheduled jobs, I ran into a couple of issues and
made a few notes.
1) Times MUST be UTC:
I've got the following:
BdrbJobQueue.insert_job(:worker_name => 'backup_worker',
:worker_method => 'do_work',
:args => @backup.id,
:scheduled_at => Time.now + 30)
resulting in:
submitted_at: 2008-09-23 17:57:26
started_at: 2008-09-23 17:57:30
finished_at: NULL
archived_at: NULL
scheduled_at: 2008-09-23 17:57:56
changing it to Time.now.utc + 30 fixes it.
2. job_key is mandatory when using the persistent queue since there is
a unique key check on this field. This was not immediately obvious,
and no key is automatically generated. The above code inserts NULL for
job_key.
I can submit doc patches for the above if that helps.
3. When firing the job at the scheduled time, MetaWorker calls
Marshal.load() on `args` though they were not previously marshalled by
ActiveRecord. I made the following change in my WC in order to move
passed this problem:
Index: vendor/plugins/backgroundrb/server/lib/meta_worker.rb
===================================================================
--- vendor/plugins/backgroundrb/server/lib/meta_worker.rb
(revision 114)
+++ vendor/plugins/backgroundrb/server/lib/meta_worker.rb
(working copy)
@@ -287,10 +287,9 @@
Thread.current[:persistent_job_id] = task[:id]
Thread.current[:job_key] = task[:job_key]
called_method_arity = self.method(task.worker_method).arity
- args = load_data(task.args)
begin
if called_method_arity != 0
- self.send(task.worker_method,args)
+ self.send(task.worker_method,task.args)
else
self.send(task.worker_method)
end
regards,
chetan
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