seitime-frappe/webnotes/utils/scheduler.py

110 lines
2.5 KiB
Python

# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd.
# MIT License. See license.txt
from __future__ import unicode_literals
"""
Scheduler will call the following events from the module
`startup.schedule_handler`
execute_always
execute_daily
execute_monthly
execute_weekly
The scheduler should be called from a cron job every x minutes (5?) depending
on the need.
"""
import webnotes
def execute():
"""
execute jobs
this method triggers the other scheduler events
Database connection: Ideally it should be connected from outside, if there is
no connection, it will connect from defs.py
"""
from datetime import datetime
import webnotes.utils
format = '%Y-%m-%d %H:%M:%S'
if not webnotes.conn:
webnotes.connect()
out = []
nowtime = webnotes.utils.now_datetime()
last = webnotes.conn.get_global('scheduler_last_event')
# set scheduler last event
webnotes.conn.begin()
webnotes.conn.set_global('scheduler_last_event', nowtime.strftime(format))
webnotes.conn.commit()
if last:
last = datetime.strptime(last, format)
if nowtime.day != last.day:
# if first task of the day execute daily tasks
out.append('daily:' + trigger('execute_daily'))
if nowtime.month != last.month:
out.append('monthly:' + trigger('execute_monthly'))
if nowtime.weekday()==0:
out.append('weekly:' + trigger('execute_weekly'))
if nowtime.hour != last.hour:
out.append('hourly:' + trigger('execute_hourly'))
out.append('all:' + trigger('execute_all'))
return '\n'.join(out)
def trigger(method):
"""trigger method in startup.schedule_handler"""
try:
import startup.schedule_handlers
if hasattr(startup.schedule_handlers, method):
webnotes.conn.begin()
getattr(startup.schedule_handlers, method)()
webnotes.conn.commit()
return 'ok'
except Exception:
return log(method)
def log(method):
"""log error in patch_log"""
import webnotes
if not (webnotes.conn and webnotes.conn._conn):
webnotes.connect()
webnotes.conn.rollback()
traceback = webnotes.getTraceback()
import webnotes.utils
webnotes.conn.begin()
d = webnotes.doc("Scheduler Log")
d.method = method
d.error = traceback
d.save()
webnotes.conn.commit()
from webnotes.utils.email_lib import sendmail_to_system_managers
sendmail_to_system_managers("ERPNext Scheduler Failed", """
<p>Dear System Managers,</p>
<p>Reporting ERPNext failed scheduler event:</p>
<p>Time: %(time)s</p>
<pre><code>%(trace)s</code></pre>
""" % {
"time": webnotes.utils.now(),
"trace": traceback
})
return traceback
if __name__=='__main__':
execute()