Re: Task Engine Framework?
- From: Adam Tauno Williams <awilliam@xxxxxxxxxxxxx>
- Date: Tue, 07 Dec 2010 11:32:30 -0500
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# :-).
.
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