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297 lines
12 KiB
Python
297 lines
12 KiB
Python
###
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# Copyright (c) 2003-2004, Jeremiah Fincher
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# Copyright (c) 2010-2021, The Limnoria Contributors
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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 math
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import shutil
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import tempfile
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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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from supybot.i18n import PluginInternationalization, internationalizeDocstring
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_ = PluginInternationalization('Scheduler')
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import supybot.world as world
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import supybot.utils.minisix as minisix
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pickle = minisix.pickle
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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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"""This plugin allows you to schedule commands to execute at a later time."""
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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 _getNextRunIn(self, first_run, now, period, not_right_now=False):
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next_run_in = period - ((now - first_run) % period)
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if not_right_now and next_run_in < 5:
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# don't run immediatly, it might overwhelm the bot on
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# startup.
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next_run_in += period
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return next_run_in
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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 as 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 as e:
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self.log.debug('Unable to open pickle file: %s', e)
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return
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for name, event in eventdict.items():
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# old DBs don't have the "network", let's take the current network
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# instead.
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network = event.get('network', irc.network)
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try:
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if event['type'] == 'single': # non-repeating event
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n = None
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if schedule.schedule.counter > int(name):
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# counter not reset, we're probably reloading the plugin
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# though we'll never know for sure, because other
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# plugins can schedule stuff, too.
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n = int(name)
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# Here we use event.get() method instead of event[]
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# This is to maintain compatibility with older bots
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# lacking 'is_reminder' in their event dicts
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is_reminder = event.get('is_reminder', False)
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self._add(network, event['msg'], event['time'], event['command'],
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is_reminder, n)
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elif event['type'] == 'repeat': # repeating event
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now = time.time()
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first_run = event.get('first_run')
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if first_run is None:
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# old DBs don't have a "first_run"; let's take "now" as
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# first_run.
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first_run = now
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# Preserve the offset over restarts; eg. if event['time']
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# is 24hours, we want to keep running the command at the
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# same time of day.
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next_run_in = self._getNextRunIn(
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first_run, now, event['time'], not_right_now=True)
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self._repeat(network, event['msg'], name,
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event['time'], event['command'], first_run, next_run_in)
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except AssertionError as e:
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if str(e) == 'An event with the same name has already been scheduled.':
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# we must be reloading the plugin, event is still scheduled
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self.log.info('Event %s already exists, adding to dict.', name)
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self.events[name] = event
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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 as 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) as e:
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self.log.warning('File error: %s', e)
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def die(self):
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self._flush()
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world.flushers.remove(self._flush)
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self.__parent.die()
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def _makeCommandFunction(self, network, msg, command, remove=True):
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"""Makes a function suitable for scheduling from command."""
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def f():
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# If the network isn't available, pick any other one
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irc = world.getIrc(network) or world.ircs[0]
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tokens = callbacks.tokenize(command,
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channel=msg.channel, network=irc.network)
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if remove:
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del self.events[str(f.eventId)]
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self.Proxy(irc, msg, tokens)
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return f
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def _makeReminderFunction(self, network, msg, text):
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"""Makes a function suitable for scheduling text"""
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def f():
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# If the network isn't available, pick any other one
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irc = world.getIrc(network) or world.ircs[0]
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replyIrc = callbacks.ReplyIrcProxy(irc, msg)
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replyIrc.reply(_('Reminder: %s') % text, msg=msg, prefixNick=True)
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del self.events[str(f.eventId)]
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return f
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def _add(self, network, msg, t, command, is_reminder=False, name=None):
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if is_reminder:
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f = self._makeReminderFunction(network, msg, command)
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else:
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f = self._makeCommandFunction(network, msg, command)
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id = schedule.addEvent(f, t, name)
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f.eventId = id
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self.events[str(id)] = {'command':command,
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'is_reminder':is_reminder,
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'msg':msg,
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'network':network,
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'time':t,
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'type':'single'}
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return id
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@internationalizeDocstring
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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.network, 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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@internationalizeDocstring
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def remind(self, irc, msg, args, seconds, text):
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""" <seconds> <text>
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Sets a reminder with string <text> to run <seconds> seconds in the
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future. For example, 'scheduler remind [seconds 30m] "Hello World"'
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will return '<nick> Reminder: Hello World' 30 minutes after being set.
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"""
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t = time.time() + seconds
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id = self._add(irc.network, msg, t, text, is_reminder=True)
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irc.replySuccess(format(_('Reminder Event #%i added.'), id))
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remind = wrap(remind, ['positiveInt', 'text'])
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@internationalizeDocstring
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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, network, msg, name, seconds, command, first_run, next_run_in):
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f = self._makeCommandFunction(network, msg, command, remove=False)
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f_wrapper = schedule.schedule.makePeriodicWrapper(f, seconds, name)
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assert first_run is not None
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id = schedule.addEvent(f_wrapper, time.time() + next_run_in, 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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'network':network,
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'time':seconds,
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'type':'repeat',
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'first_run': first_run,
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}
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@internationalizeDocstring
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def repeat(self, irc, msg, args, optlist, name, seconds, command):
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"""[--delay <delay>] <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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If --delay is given, starts in <delay> seconds instead of now.
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"""
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opts = dict(optlist)
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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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next_run_in = opts.get('delay', 0)
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first_run = time.time() + next_run_in
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self._repeat(
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irc.network, msg, name, seconds, command, first_run, next_run_in)
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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, [
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getopts({'delay': 'positiveInt'}),
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'nonInt', 'positiveInt', 'text'])
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@internationalizeDocstring
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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 = list(self.events.items())
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if L:
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L.sort()
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replies = []
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now = time.time()
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for (i, (name, event)) in enumerate(L):
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if event['type'] == 'single':
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replies.append(format('%s (in %T): %q', name,
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event['time'] - now, event['command']))
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else:
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next_run_in = self._getNextRunIn(
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event['first_run'], now, event['time'])
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replies.append(format('%s (every %T, next run in %T): %q',
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name, event['time'], next_run_in, event['command']))
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irc.reply(format('%L', replies))
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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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