#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# cron.py
#
# Copyright 2018 Jelle Smet <development@smetj.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
#
from gevent import monkey; monkey.patch_all()
from wishbone.actor import Actor
from wishbone.module import InputModule
from cronex import CronExpression
from gevent import sleep
import time
[docs]class Cron(InputModule):
'''**Generates an event at the defined time**
Generates an event with the defined payload at the chosen time.
Time is in crontab format.
Parameters::
- native_events(bool)(False)
| Whether to expect incoming events to be native Wishbone events
- cron(string)("*/10 * * * *")
| The cron expression.
- payload(str)("wishbone")
| The content of <destination>.
- destination(str)("data")
| The location to write <payload> to.
Queues::
- outbox
| Outgoing messges
'''
def __init__(self, actor_config, native_events=False,
cron="*/10 * * * *", payload="wishbone", destination="data"):
Actor.__init__(self, actor_config)
self.pool.createQueue("outbox")
self.cron = CronExpression("%s wishbone" % self.kwargs.cron)
def preHook(self):
self.sendToBackground(self.timer)
def timer(self):
while self.loop():
if self.cron.check_trigger(time.localtime(time.time())[:5]):
self.logging.info("Cron executed.")
for chunk in [self.kwargs_raw["payload"], None]:
for payload in self.decode(chunk):
event = self.generateEvent(
payload,
self.kwargs.destination
)
self.submit(
event,
"outbox"
)
sleep(60)