mirror of https://github.com/evilhero/mylar
89 lines
2.7 KiB
Python
89 lines
2.7 KiB
Python
# Author: Nic Wolfe <nic@wolfeden.ca>
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# URL: http://code.google.com/p/sickbeard/
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#
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# This file is part of Sick Beard.
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#
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# Sick Beard is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Sick Beard is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Sick Beard. If not, see <http://www.gnu.org/licenses/>.
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import datetime
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import time
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import threading
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import traceback
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from mylar import logger
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class Scheduler:
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def __init__(self, action, cycleTime=datetime.timedelta(minutes=10), runImmediately=True,
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threadName="ScheduledThread", silent=False, delay=None):
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if runImmediately:
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self.lastRun = datetime.datetime.fromordinal(1)
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else:
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self.lastRun = datetime.datetime.now()
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self.action = action
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self.cycleTime = cycleTime
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self.thread = None
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self.threadName = threadName
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self.silent = silent
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self.delay = delay
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self.initThread()
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self.abort = False
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def initThread(self):
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if self.thread == None or not self.thread.isAlive():
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self.thread = threading.Thread(None, self.runAction, self.threadName)
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def timeLeft(self):
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return self.cycleTime - (datetime.datetime.now() - self.lastRun)
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def forceRun(self):
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if not self.action.amActive:
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self.lastRun = datetime.datetime.fromordinal(1)
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return True
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return False
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def runAction(self):
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while True:
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currentTime = datetime.datetime.now()
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if currentTime - self.lastRun > self.cycleTime:
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self.lastRun = currentTime
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try:
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if not self.silent:
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logger.fdebug("Starting new thread: " + self.threadName)
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if self.delay:
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logger.info('delaying thread for ' + str(self.delay) + ' seconds to avoid locks.')
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time.sleep(self.delay)
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self.action.run()
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except Exception, e:
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logger.fdebug("Exception generated in thread " + self.threadName + ": %s" % e)
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logger.fdebug(repr(traceback.format_exc()))
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if self.abort:
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self.abort = False
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self.thread = None
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return
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time.sleep(1)
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