52 lines
1.1 KiB
Python
52 lines
1.1 KiB
Python
#!/usr/bin/env python
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# -*- mode: python; indent-tabs-mode: nil; -*- coding: utf-8 -*-
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"""
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Timer.py
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Copyright 2010-2013 by Marcello Perathoner
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Distributable under the GNU General Public License Version 3 or newer.
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A cron-like process that runs at fixed intervals.
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Usage:
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import Timer
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cherrypy.process.plugins.Timer = TimerPlugin
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"""
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from __future__ import unicode_literals
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import cherrypy
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import BaseSearcher
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class TimerPlugin (cherrypy.process.plugins.Monitor):
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""" Plugin to start the timer thread.
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We cannot start any threads before daemonizing,
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so we must start the timer thread by this plugin.
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"""
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def __init__ (self, bus):
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# interval in seconds
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frequency = 300
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super (TimerPlugin, self).__init__ (bus, self.tick, frequency)
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self.name = 'timer'
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def start (self):
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super (TimerPlugin, self).start ()
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self.tick ()
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start.priority = 80
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def tick (self):
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""" Do things here. """
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try:
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BaseSearcher.books_in_archive = BaseSearcher.sql_get ('select count (*) from books')
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except:
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pass
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