[Zope] Periodic task in a Zope 2 environment

[Thibaud Morel l'Horset]

I'm guessing that AJ's solution is the best to implement.

What I did to solve this problem is simply create a few crons on the server
that each do a mechanize (http://wwwsearch.sourceforge.net/mechanize/) http
call to a specific location in Zope which basically acts as a private API:
when called, it executes a function that triggers whatever needs to happen.
I hard-coded a check that the source IP must be the specific internal
address of the server Zope runs on. That way I know that the functions can't
be called from the outside.

Not the best solution, and I wouldn't really recommend it to someone else,
but it's easy and it works for me.

- Thibaud

On Mon, Feb 16, 2009 at 12:50 PM, Thierry Florac <thierry.florac at onf.fr>wrote:

> Le lundi 16 février 2009 à 16:59 +0100, Marco Bizzarri a écrit :
> > Hi all.
> >
> > A little of background, before.
> >
> > I need to run some tasks, inside a zope environment, in a periodic
> > way. Even though I could resort to using cron and wget, I do not like
> > the solution too much, also because it requires me to rely on
> > something completly external to the application to schedule the task
> > itsel (I need to update the cron to change how often a job is run...
> > ).
> >
> >
> > Now, I can see I can run a task using zopectl run + a script. My
> > script would therefore be something like:
> >
> > while True:
> >      do something
> >      sleep(for sometime)
> >
> >
> > of course, there are dozen of ways to write this in a better way, but
> > that is not the problem. My problem is understanding if it is possible
> > to run such a script via the zdaemon. Can anyone shred some light on
> > this topic?
>
>
> Hi,
>
> I don't know if it's the best way, but I've implemented a "cron like"
> task base class for my Zope-2.9 instance, which :
>  - is thread based
>  - can launch operations in a "cron like" way
>  - can act as the user of your choice.
>
> It doesn't actually provide any user interface to define task
> scheduling, but the main base class could probably be used as a good
> starting point ; at least, it works ;-).
> I can send you the source code on request...
>
>
>  Thierry Florac
> --
>  Chef de projet intranet/internet
>  Office National des Forêts - Département Informatique
>  2, Avenue de Saint-Mandé
>  75570 PARIS Cedex 12
>  Mél : thierry.florac at onf.fr
>  Tél. : +33 01.40.19.59.64
>  Fax. : +33 01.40.19.59.85
>
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