django-dbcron 0.3.0

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django-dbcron
=============

Manage crontab directly from your Django database

Why
---

They are plenty of implementation of crontabs in Python and Django, but our
issue was their elasticity. Generally a set of classes will allow you to
create a crontab, here in django-dbcron, things are stored in database
instead of Python classes.


Installation
------------

Classic pip install: ::

pip install django-dbcron


Add it to you ``INSTALLED_APPS``: ::

INSTALLED_APPS = (
...
'dbcron',
...
)

Launch migrations: ::

./manage.py migrate dbcron

Usage
-----

This app owns its own cron daemon, launch it with: ::

./manage.py crond

The daemon will act as a classic cron and will run each task in a new thread,
leaving the main one continuing.

From admin
~~~~~~~~~

The cron table is set in database and the Django admin site is a quick
solution to manage you jobs.

From Python
~~~~~~~~~~

Just play with the model: ::

from dbcron.models import Job

# Run now() each minute
job = Job.object.create(
name='My job',
func='django.utils.timezone.now',
is_active=True,
sec="0",
min="*/1,
hou="*",
dom="*",
mon="*",
dow="*",
yea="*"
)

# Test it
job.run()

Warning
-------

The cron daemon launches jobs as they are requested with:

- function's path
- arguments and keyword arguments

There's no security about who/when/how, just functions launched abritairly,
Be careful who can set crontab, and do not hesitate to limit possible values.