Long story short: Make a cron directory in your app, and a crontab file in it. The format of the file is regular crontab (you have an example for cleaning sessions in the admin app). One special hook is if you prefix the application with a *, it will execute a web2py controller (basically a wrapper for calling python -S app -M....), but you have a commented out example for that in the admin crontab, too.
If you're running standalone web2py (python web2py.py), or apache via mod_proxy, you don't need to do anything, you get it for 'free', in a spearate thread. This is know as 'hard cron' and is the recommended cron mode. Tasks have no execution time limit. If you're running CGI or WSGI/FASTCGI, by default you have 'soft cron' which means that your tasks will be executed in the first call to web2py after the time specified in crontab (but AFTER processing the page, so no delay to the user is visible). Obviously, this has some uncertainty exactly when the task will be executed. This is why we a third mode, 'external cron'. Running cron tasks will be aborted when the webserver stops or restarts. Both soft and hard cron are platform independent, so even if you have a windows machine, cron functionality will work without any changes. External cron is called from the system crontab. It's recommended if you're running WSGI/Fastcgi and you have root access. Add something along these lines to your system crontab: 0-59/1 * * * * web2py cd /var/www/web2py/ && touch applications/admin/cron/cron.master && python web2py.py -C -D 1 >> /tmp/cron.output 2>&1 (change the paths to the ones on your system, of course, and the username if it's not web2py). Note that external cron has it's own output (and will thus not output stuff to the same console as web2py like the other two cron modes). That's it in a nutshell. If you have any problems with it just let me know. On Jan 12, 10:48 am, David Marko <[email protected]> wrote: > Hi Massimo, > can you drop some example how to use it in application? > > David > > On 12 Led, 04:54, Massimo Di Pierro <[email protected]> wrote: > > > Hi Attila, > > > Uploaded your patch to trunk now! Excellent work! > > > Massimo --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "web2py Web Framework" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/web2py?hl=en -~----------~----~----~----~------~----~------~--~---
