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https://github.com/Mikaela/Limnoria.git
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e5e9cbba69
The list of tasks scheduled with the Scheduler plugin is now saved on exit, and restored upon restart. Previously all scheduled tasks would be forgotten upon bot restart, which was undesirable behavior.
203 lines
7.7 KiB
Python
203 lines
7.7 KiB
Python
###
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# Copyright (c) 2003-2004, Jeremiah Fincher
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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import time
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import os
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import shutil
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import tempfile
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import cPickle as pickle
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import supybot.conf as conf
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import supybot.utils as utils
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from supybot.commands import *
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import supybot.schedule as schedule
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import supybot.callbacks as callbacks
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import supybot.world as world
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datadir = conf.supybot.directories.data()
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filename = conf.supybot.directories.data.dirize('Scheduler.pickle')
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class Scheduler(callbacks.Plugin):
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def __init__(self, irc):
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self.__parent = super(Scheduler, self)
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self.__parent.__init__(irc)
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self.events = {}
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self._restoreEvents(irc)
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world.flushers.append(self._flush)
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def _restoreEvents(self, irc):
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try:
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pkl = open(filename, 'rb')
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try:
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eventdict = pickle.load(pkl)
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except Exception, e:
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self.log.debug('Unable to load pickled data: %s', e)
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return
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finally:
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pkl.close()
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except IOError, e:
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self.log.debug('Unable to open pickle file: %s', e)
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return
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try:
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for name, event in eventdict.iteritems():
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ircobj = callbacks.ReplyIrcProxy(irc, event['msg'])
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if event['type'] == 'single': # non-repeating event
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self._add(ircobj, event['msg'],
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event['time'], event['command'])
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elif event['type'] == 'repeat': # repeating event
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self._repeat(ircobj, event['msg'], name,
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event['time'], event['command'])
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except AssertionError, e:
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if str(e) == 'An event with the same name has already been scheduled.':
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pass # we must be reloading the plugin
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else:
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raise
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def _flush(self):
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try:
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pklfd, tempfn = tempfile.mkstemp(suffix='scheduler', dir=datadir)
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pkl = os.fdopen(pklfd, 'wb')
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try:
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pickle.dump(self.events, pkl)
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except Exception, e:
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self.log.warning('Unable to store pickled data: %s', e)
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pkl.close()
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shutil.move(tempfn, filename)
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except (IOError, shutil.Error), e:
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self.log.warning('File error: %s', e)
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def die(self):
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world.flushers.remove(self._flush)
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self.__parent.die()
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def _makeCommandFunction(self, irc, msg, command, remove=True):
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"""Makes a function suitable for scheduling from command."""
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tokens = callbacks.tokenize(command)
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print command
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print tokens
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def f():
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if remove:
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del self.events[str(f.eventId)]
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self.Proxy(irc.irc, msg, tokens)
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return f
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def _add(self, irc, msg, t, command):
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f = self._makeCommandFunction(irc, msg, command)
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id = schedule.addEvent(f, t)
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f.eventId = id
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self.events[str(id)] = {'command':command,
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'msg':msg,
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'time':t,
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'type':'single'}
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return id
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def add(self, irc, msg, args, seconds, command):
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"""<seconds> <command>
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Schedules the command string <command> to run <seconds> seconds in the
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future. For example, 'scheduler add [seconds 30m] "echo [cpu]"' will
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schedule the command "cpu" to be sent to the channel the schedule add
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command was given in (with no prefixed nick, a consequence of using
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echo). Do pay attention to the quotes in that example.
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"""
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t = time.time() + seconds
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id = self._add(irc, msg, t, command)
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irc.replySuccess(format('Event #%i added.', id))
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add = wrap(add, ['positiveInt', 'text'])
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def remove(self, irc, msg, args, id):
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"""<id>
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Removes the event scheduled with id <id> from the schedule.
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"""
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if id in self.events:
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del self.events[id]
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try:
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id = int(id)
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except ValueError:
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pass
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try:
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schedule.removeEvent(id)
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irc.replySuccess()
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except KeyError:
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irc.error('Invalid event id.')
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else:
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irc.error('Invalid event id.')
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remove = wrap(remove, ['lowered'])
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def _repeat(self, irc, msg, name, seconds, command):
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f = self._makeCommandFunction(irc, msg, command, remove=False)
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id = schedule.addPeriodicEvent(f, seconds, name)
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assert id == name
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self.events[name] = {'command':command,
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'msg':msg,
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'time':seconds,
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'type':'repeat'}
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def repeat(self, irc, msg, args, name, seconds, command):
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"""<name> <seconds> <command>
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Schedules the command <command> to run every <seconds> seconds,
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starting now (i.e., the command runs now, and every <seconds> seconds
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thereafter). <name> is a name by which the command can be
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unscheduled.
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"""
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name = name.lower()
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if name in self.events:
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irc.error('There is already an event with that name, please '
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'choose another name.', Raise=True)
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self._repeat(irc, msg, name, seconds, command)
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# We don't reply because the command runs immediately.
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# But should we? What if the command doesn't have visible output?
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# irc.replySuccess()
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repeat = wrap(repeat, ['nonInt', 'positiveInt', 'text'])
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def list(self, irc, msg, args):
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"""takes no arguments
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Lists the currently scheduled events.
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"""
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L = self.events.items()
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if L:
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L.sort()
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for (i, (name, command)) in enumerate(L):
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L[i] = format('%s: %q', name, command['command'])
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irc.reply(format('%L', L))
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irc.reply(schedule.schedule.schedule)
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irc.reply(schedule.schedule.events)
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irc.reply(schedule.schedule.counter)
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else:
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irc.reply('There are currently no scheduled commands.')
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list = wrap(list)
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Class = Scheduler
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# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:
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