Task Engine Framework?

[Nate]

On Dec 7, 8:32 am, Adam Tauno Williams <awill... at whitemice.org> wrote:
> On Mon, 2010-12-06 at 15:11 -0800, Nate wrote:
> > Hello,
> > I'm in the process of developing a task engine / workflow module for
> > my Python application and I'm wondering if anyone knows of existing
> > code that could be used or adapted.  Since I know that's far too
> > generic a question, let me share my goals:
> > 1) Support long running operations (think backing up millions of
> > files) where:
> >    - The operation can be paused (application closed) and the
> > operation resumed later.
> >    - Individual tasks can be chained, run in parallel, or looped over
> > (the workflow part)
>
> We have something like that in OIE (OpenGroupware Integration Engine).
> <http://sourceforge.net/projects/coils/>.  These things tend to turn out
> to be quite specific [and thus not generic].  But if you have any
> questions feel free to ask.  The focus in OIE was the ability to
> describe processes in BPML and facilitate process management [creating,
> queuing, parking (stopping for later resume) of business / ETL tasks.
> Parts of the code aren't especially elegant but it does move a fairly
> large amount of data every day.
>
>
>
>
>
>
>
> > 2) Would like to graph each defined operation (task A starts task B
> > with parameters... ) for documenting algorithms in Software Design
> > Document
> > 3) Each individual task in the operation would a self-contained
> > class.  I'd imagine implementing its action by defining a doTask()
> > method
> > Hopefully that's clear.  I just feel like someone must have already
> > solved this elegantly.  I greatly enjoy Python and I look forward to
> > proving its use as a valuable language for a Masters student even
> > though everyone thinks I should use C# :-).

Thank you,

I'll take a look at the project.  At the very least, seeing someone
else's solution would be helpful.  I'm trying desperately hard to keep
the code simple :-)

-Nate