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# :-). -- http://mail.python.org/mailman/listinfo/python-list
