[Zope-dev] Idea: Awaking Zope to Life

[Chris McDonough]

Ulrich,

You may also be interested in http://cvs.zope.org/Products/Scheduler/
(it has a dependency on http://cvs.zope.org/Products/Event/ and a Zope
>= than 2.6b1).

It relies on an external "clock" process to tickle it every so often,
but you could of course kick off a Zope thread to do this...

- C


On Sun, 2002-10-13 at 11:44, Ulrich Eck wrote:
> Hi there,
> 
> I just had an Idea and want to hear your comments on the following:
> 
> Zope is a Request-Based System. It has no internal scheduling functions
> except one installs Xron.
> 
> I have written a MicroThread Scheduler using python2.2 generators
> that supply cooperative Multithreading.
> 
> Now the point:
> 
> I want to integrate this Scheduler as one Thread (like Xron)
> to Zope as "Service" where clients could register a callback
> with parameters which are called regularly with a certain priority.
> 
> Zope's Persistent Object Database would morph to an completely
> persistent Program that handles requests too.
> 
> One could use it to implement better Workflow capabilities,
> or an Event Sytem (a client would register a Thread that
> checks for incoming messages and handles them). Many more things
> could be done ..
> 
> What are the pitfalls i can run into, when trying to implement this ??
> I could think of concurrency issues, problem with threads, context,
> security .. any concrete hints ??
> 
> What do you think about that ??
> 
> 
> Ulrich Eck
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> 
> 
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