#!/usr/bin/env python # # A library that provides a Python interface to the Telegram Bot API # Copyright (C) 2015-2020 # Leandro Toledo de Souza # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Lesser 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 Lesser Public License for more details. # # You should have received a copy of the GNU Lesser Public License # along with this program. If not, see [http://www.gnu.org/licenses/]. """This module contains the classes JobQueue and Job.""" import datetime import logging import pytz from apscheduler.schedulers.background import BackgroundScheduler from apscheduler.triggers.cron import CronTrigger from apscheduler.triggers.combining import OrTrigger from apscheduler.events import EVENT_JOB_EXECUTED, EVENT_JOB_ERROR, JobEvent from telegram.ext.callbackcontext import CallbackContext from typing import TYPE_CHECKING, Union, Callable, Tuple, Optional, List, Any, cast, overload from telegram.utils.types import JSONDict if TYPE_CHECKING: from telegram.ext import Dispatcher from telegram import Bot class Days: MON, TUE, WED, THU, FRI, SAT, SUN = range(7) EVERY_DAY = tuple(range(7)) class JobQueue: """This class allows you to periodically perform tasks with the bot. It is a convenience wrapper for the APScheduler library. Attributes: scheduler (:class:`apscheduler.schedulers.background.BackgroundScheduler`): The APScheduler bot (:class:`telegram.Bot`): The bot instance that should be passed to the jobs. DEPRECATED: Use :attr:`set_dispatcher` instead. """ def __init__(self) -> None: self._dispatcher: 'Dispatcher' = None # type: ignore[assignment] self.logger = logging.getLogger(self.__class__.__name__) self.scheduler = BackgroundScheduler(timezone=pytz.utc) self.scheduler.add_listener( self._update_persistence, mask=EVENT_JOB_EXECUTED | EVENT_JOB_ERROR ) # Dispatch errors and don't log them in the APS logger def aps_log_filter(record): # type: ignore return 'raised an exception' not in record.msg logging.getLogger('apscheduler.executors.default').addFilter(aps_log_filter) self.scheduler.add_listener(self._dispatch_error, EVENT_JOB_ERROR) def _build_args(self, job: 'Job') -> List[Union[CallbackContext, 'Bot', 'Job']]: if self._dispatcher.use_context: return [CallbackContext.from_job(job, self._dispatcher)] return [self._dispatcher.bot, job] def _tz_now(self) -> datetime.datetime: return datetime.datetime.now(self.scheduler.timezone) def _update_persistence(self, event: JobEvent) -> None: self._dispatcher.update_persistence() def _dispatch_error(self, event: JobEvent) -> None: try: self._dispatcher.dispatch_error(None, event.exception) # Errors should not stop the thread. except Exception: self.logger.exception( 'An error was raised while processing the job and an ' 'uncaught error was raised while handling the error ' 'with an error_handler.' ) @overload def _parse_time_input(self, time: None, shift_day: bool = False) -> None: ... @overload def _parse_time_input( self, time: Union[float, int, datetime.timedelta, datetime.datetime, datetime.time], shift_day: bool = False, ) -> datetime.datetime: ... def _parse_time_input( self, time: Union[float, int, datetime.timedelta, datetime.datetime, datetime.time, None], shift_day: bool = False, ) -> Optional[datetime.datetime]: if time is None: return None if isinstance(time, (int, float)): return self._tz_now() + datetime.timedelta(seconds=time) if isinstance(time, datetime.timedelta): return self._tz_now() + time if isinstance(time, datetime.time): dt = datetime.datetime.combine( datetime.datetime.now(tz=time.tzinfo or self.scheduler.timezone).date(), time ) if dt.tzinfo is None: dt = self.scheduler.timezone.localize(dt) if shift_day and dt <= datetime.datetime.now(pytz.utc): dt += datetime.timedelta(days=1) return dt # isinstance(time, datetime.datetime): return time def set_dispatcher(self, dispatcher: 'Dispatcher') -> None: """Set the dispatcher to be used by this JobQueue. Use this instead of passing a :class:`telegram.Bot` to the JobQueue, which is deprecated. Args: dispatcher (:class:`telegram.ext.Dispatcher`): The dispatcher. """ self._dispatcher = dispatcher if dispatcher.bot.defaults: if dispatcher.bot.defaults: self.scheduler.configure(timezone=dispatcher.bot.defaults.tzinfo or pytz.utc) def run_once( self, callback: Callable[['CallbackContext'], None], when: Union[float, datetime.timedelta, datetime.datetime, datetime.time], context: object = None, name: str = None, job_kwargs: JSONDict = None, ) -> 'Job': """Creates a new ``Job`` that runs once and adds it to the queue. Args: callback (:obj:`callable`): The callback function that should be executed by the new job. Callback signature for context based API: ``def callback(CallbackContext)`` ``context.job`` is the :class:`telegram.ext.Job` instance. It can be used to access its ``job.context`` or change it to a repeating job. when (:obj:`int` | :obj:`float` | :obj:`datetime.timedelta` | \ :obj:`datetime.datetime` | :obj:`datetime.time`): Time in or at which the job should run. This parameter will be interpreted depending on its type. * :obj:`int` or :obj:`float` will be interpreted as "seconds from now" in which the job should run. * :obj:`datetime.timedelta` will be interpreted as "time from now" in which the job should run. * :obj:`datetime.datetime` will be interpreted as a specific date and time at which the job should run. If the timezone (``datetime.tzinfo``) is :obj:`None`, the default timezone of the bot will be used. * :obj:`datetime.time` will be interpreted as a specific time of day at which the job should run. This could be either today or, if the time has already passed, tomorrow. If the timezone (``time.tzinfo``) is :obj:`None`, the default timezone of the bot will be used. context (:obj:`object`, optional): Additional data needed for the callback function. Can be accessed through ``job.context`` in the callback. Defaults to :obj:`None`. name (:obj:`str`, optional): The name of the new job. Defaults to ``callback.__name__``. job_kwargs (:obj:`dict`, optional): Arbitrary keyword arguments to pass to the ``scheduler.add_job()``. Returns: :class:`telegram.ext.Job`: The new ``Job`` instance that has been added to the job queue. """ if not job_kwargs: job_kwargs = {} name = name or callback.__name__ job = Job(callback, context, name, self) dt = self._parse_time_input(when, shift_day=True) j = self.scheduler.add_job( callback, name=name, trigger='date', run_date=dt, args=self._build_args(job), timezone=dt.tzinfo or self.scheduler.timezone, **job_kwargs, ) job.job = j return job def run_repeating( self, callback: Callable[['CallbackContext'], None], interval: Union[float, datetime.timedelta], first: Union[float, datetime.timedelta, datetime.datetime, datetime.time] = None, last: Union[float, datetime.timedelta, datetime.datetime, datetime.time] = None, context: object = None, name: str = None, job_kwargs: JSONDict = None, ) -> 'Job': """Creates a new ``Job`` that runs at specified intervals and adds it to the queue. Args: callback (:obj:`callable`): The callback function that should be executed by the new job. Callback signature for context based API: ``def callback(CallbackContext)`` ``context.job`` is the :class:`telegram.ext.Job` instance. It can be used to access its ``job.context`` or change it to a repeating job. interval (:obj:`int` | :obj:`float` | :obj:`datetime.timedelta`): The interval in which the job will run. If it is an :obj:`int` or a :obj:`float`, it will be interpreted as seconds. first (:obj:`int` | :obj:`float` | :obj:`datetime.timedelta` | \ :obj:`datetime.datetime` | :obj:`datetime.time`, optional): Time in or at which the job should run. This parameter will be interpreted depending on its type. * :obj:`int` or :obj:`float` will be interpreted as "seconds from now" in which the job should run. * :obj:`datetime.timedelta` will be interpreted as "time from now" in which the job should run. * :obj:`datetime.datetime` will be interpreted as a specific date and time at which the job should run. If the timezone (``datetime.tzinfo``) is :obj:`None`, the default timezone of the bot will be used. * :obj:`datetime.time` will be interpreted as a specific time of day at which the job should run. This could be either today or, if the time has already passed, tomorrow. If the timezone (``time.tzinfo``) is :obj:`None`, the default timezone of the bot will be used. Defaults to ``interval`` last (:obj:`int` | :obj:`float` | :obj:`datetime.timedelta` | \ :obj:`datetime.datetime` | :obj:`datetime.time`, optional): Latest possible time for the job to run. This parameter will be interpreted depending on its type. See ``first`` for details. If ``last`` is :obj:`datetime.datetime` or :obj:`datetime.time` type and ``last.tzinfo`` is :obj:`None`, the default timezone of the bot will be assumed. Defaults to :obj:`None`. context (:obj:`object`, optional): Additional data needed for the callback function. Can be accessed through ``job.context`` in the callback. Defaults to :obj:`None`. name (:obj:`str`, optional): The name of the new job. Defaults to ``callback.__name__``. job_kwargs (:obj:`dict`, optional): Arbitrary keyword arguments to pass to the ``scheduler.add_job()``. Returns: :class:`telegram.ext.Job`: The new ``Job`` instance that has been added to the job queue. Note: `interval` is always respected "as-is". That means that if DST changes during that interval, the job might not run at the time one would expect. It is always recommended to pin servers to UTC time, then time related behaviour can always be expected. """ if not job_kwargs: job_kwargs = {} name = name or callback.__name__ job = Job(callback, context, name, self) dt_first = self._parse_time_input(first) dt_last = self._parse_time_input(last) if dt_last and dt_first and dt_last < dt_first: raise ValueError("'last' must not be before 'first'!") if isinstance(interval, datetime.timedelta): interval = interval.total_seconds() j = self.scheduler.add_job( callback, trigger='interval', args=self._build_args(job), start_date=dt_first, end_date=dt_last, seconds=interval, name=name, **job_kwargs, ) job.job = j return job def run_monthly( self, callback: Callable[['CallbackContext'], None], when: datetime.time, day: int, context: object = None, name: str = None, day_is_strict: bool = True, job_kwargs: JSONDict = None, ) -> 'Job': """Creates a new ``Job`` that runs on a monthly basis and adds it to the queue. Args: callback (:obj:`callable`): The callback function that should be executed by the new job. Callback signature for context based API: ``def callback(CallbackContext)`` ``context.job`` is the :class:`telegram.ext.Job` instance. It can be used to access its ``job.context`` or change it to a repeating job. when (:obj:`datetime.time`): Time of day at which the job should run. If the timezone (``when.tzinfo``) is :obj:`None`, the default timezone of the bot will be used. day (:obj:`int`): Defines the day of the month whereby the job would run. It should be within the range of 1 and 31, inclusive. context (:obj:`object`, optional): Additional data needed for the callback function. Can be accessed through ``job.context`` in the callback. Defaults to :obj:`None`. name (:obj:`str`, optional): The name of the new job. Defaults to ``callback.__name__``. day_is_strict (:obj:`bool`, optional): If :obj:`False` and day > month.days, will pick the last day in the month. Defaults to :obj:`True`. job_kwargs (:obj:`dict`, optional): Arbitrary keyword arguments to pass to the ``scheduler.add_job()``. Returns: :class:`telegram.ext.Job`: The new ``Job`` instance that has been added to the job queue. """ if not job_kwargs: job_kwargs = {} name = name or callback.__name__ job = Job(callback, context, name, self) if day_is_strict: j = self.scheduler.add_job( callback, trigger='cron', args=self._build_args(job), name=name, day=day, hour=when.hour, minute=when.minute, second=when.second, timezone=when.tzinfo or self.scheduler.timezone, **job_kwargs, ) else: trigger = OrTrigger( [ CronTrigger( day=day, hour=when.hour, minute=when.minute, second=when.second, timezone=when.tzinfo, **job_kwargs, ), CronTrigger( day='last', hour=when.hour, minute=when.minute, second=when.second, timezone=when.tzinfo or self.scheduler.timezone, **job_kwargs, ), ] ) j = self.scheduler.add_job( callback, trigger=trigger, args=self._build_args(job), name=name, **job_kwargs ) job.job = j return job def run_daily( self, callback: Callable[['CallbackContext'], None], time: datetime.time, days: Tuple[int, ...] = Days.EVERY_DAY, context: object = None, name: str = None, job_kwargs: JSONDict = None, ) -> 'Job': """Creates a new ``Job`` that runs on a daily basis and adds it to the queue. Args: callback (:obj:`callable`): The callback function that should be executed by the new job. Callback signature for context based API: ``def callback(CallbackContext)`` ``context.job`` is the :class:`telegram.ext.Job` instance. It can be used to access its ``job.context`` or change it to a repeating job. time (:obj:`datetime.time`): Time of day at which the job should run. If the timezone (``time.tzinfo``) is :obj:`None`, the default timezone of the bot will be used. days (Tuple[:obj:`int`], optional): Defines on which days of the week the job should run. Defaults to ``EVERY_DAY`` context (:obj:`object`, optional): Additional data needed for the callback function. Can be accessed through ``job.context`` in the callback. Defaults to :obj:`None`. name (:obj:`str`, optional): The name of the new job. Defaults to ``callback.__name__``. job_kwargs (:obj:`dict`, optional): Arbitrary keyword arguments to pass to the ``scheduler.add_job()``. Returns: :class:`telegram.ext.Job`: The new ``Job`` instance that has been added to the job queue. Note: For a note about DST, please see the documentation of `APScheduler`_. .. _`APScheduler`: https://apscheduler.readthedocs.io/en/stable/modules/triggers/cron.html #daylight-saving-time-behavior """ if not job_kwargs: job_kwargs = {} name = name or callback.__name__ job = Job(callback, context, name, self) j = self.scheduler.add_job( callback, name=name, args=self._build_args(job), trigger='cron', day_of_week=','.join([str(d) for d in days]), hour=time.hour, minute=time.minute, second=time.second, timezone=time.tzinfo or self.scheduler.timezone, **job_kwargs, ) job.job = j return job def run_custom( self, callback: Callable[['CallbackContext'], None], job_kwargs: JSONDict, context: object = None, name: str = None, ) -> 'Job': """Creates a new customly defined ``Job``. Args: callback (:obj:`callable`): The callback function that should be executed by the new job. Callback signature for context based API: ``def callback(CallbackContext)`` ``context.job`` is the :class:`telegram.ext.Job` instance. It can be used to access its ``job.context`` or change it to a repeating job. job_kwargs (:obj:`dict`): Arbitrary keyword arguments. Used as arguments for ``scheduler.add_job``. context (:obj:`object`, optional): Additional data needed for the callback function. Can be accessed through ``job.context`` in the callback. Defaults to ``None``. name (:obj:`str`, optional): The name of the new job. Defaults to ``callback.__name__``. Returns: :class:`telegram.ext.Job`: The new ``Job`` instance that has been added to the job queue. """ name = name or callback.__name__ job = Job(callback, context, name, self) j = self.scheduler.add_job(callback, args=self._build_args(job), name=name, **job_kwargs) job.job = j return job def start(self) -> None: """Starts the job_queue thread.""" if not self.scheduler.running: self.scheduler.start() def stop(self) -> None: """Stops the thread.""" if self.scheduler.running: self.scheduler.shutdown() def jobs(self) -> Tuple['Job', ...]: """Returns a tuple of all jobs that are currently in the ``JobQueue``.""" return tuple(Job.from_aps_job(job, self) for job in self.scheduler.get_jobs()) def get_jobs_by_name(self, name: str) -> Tuple['Job', ...]: """Returns a tuple of jobs with the given name that are currently in the ``JobQueue``""" return tuple(job for job in self.jobs() if job.name == name) class Job: """This class is a convenience wrapper for the jobs held in a :class:`telegram.ext.JobQueue`. With the current backend APScheduler, :attr:`job` holds a :class:`apscheduler.job.Job` instance. Note: * All attributes and instance methods of :attr:`job` are also directly available as attributes/methods of the corresponding :class:`telegram.ext.Job` object. * Two instances of :class:`telegram.ext.Job` are considered equal, if their corresponding ``job`` attributes have the same ``id``. * If :attr:`job` isn't passed on initialization, it must be set manually afterwards for this :class:`telegram.ext.Job` to be useful. Attributes: callback (:obj:`callable`): The callback function that should be executed by the new job. context (:obj:`object`): Optional. Additional data needed for the callback function. name (:obj:`str`): Optional. The name of the new job. job_queue (:class:`telegram.ext.JobQueue`): Optional. The ``JobQueue`` this job belongs to. job (:class:`apscheduler.job.Job`): Optional. The APS Job this job is a wrapper for. Args: callback (:obj:`callable`): The callback function that should be executed by the new job. Callback signature for context based API: ``def callback(CallbackContext)`` a ``context.job`` is the :class:`telegram.ext.Job` instance. It can be used to access its ``job.context`` or change it to a repeating job. context (:obj:`object`, optional): Additional data needed for the callback function. Can be accessed through ``job.context`` in the callback. Defaults to :obj:`None`. name (:obj:`str`, optional): The name of the new job. Defaults to ``callback.__name__``. job_queue (:class:`telegram.ext.JobQueue`, optional): The ``JobQueue`` this job belongs to. Only optional for backward compatibility with ``JobQueue.put()``. job (:class:`apscheduler.job.Job`, optional): The APS Job this job is a wrapper for. """ def __init__( self, callback: Callable[['CallbackContext'], None], context: object = None, name: str = None, job_queue: JobQueue = None, job: 'Job' = None, ): self.callback = callback self.context = context self.name = name or callback.__name__ self.job_queue = job_queue self._removed = False self._enabled = False self.job = cast('Job', job) def run(self, dispatcher: 'Dispatcher') -> None: """Executes the callback function independently of the jobs schedule.""" try: if dispatcher.use_context: self.callback(CallbackContext.from_job(self, dispatcher)) else: self.callback(dispatcher.bot, self) # type: ignore[arg-type,call-arg] except Exception as e: try: dispatcher.dispatch_error(None, e) # Errors should not stop the thread. except Exception: dispatcher.logger.exception( 'An error was raised while processing the job and an ' 'uncaught error was raised while handling the error ' 'with an error_handler.' ) def schedule_removal(self) -> None: """ Schedules this job for removal from the ``JobQueue``. It will be removed without executing its callback function again. """ self.job.remove() self._removed = True @property def removed(self) -> bool: """:obj:`bool`: Whether this job is due to be removed.""" return self._removed @property def enabled(self) -> bool: """:obj:`bool`: Whether this job is enabled.""" return self._enabled @enabled.setter def enabled(self, status: bool) -> None: if status: self.job.resume() else: self.job.pause() self._enabled = status @property def next_t(self) -> Optional[datetime.datetime]: """ :obj:`datetime.datetime`: Datetime for the next job execution. Datetime is localized according to :attr:`tzinfo`. If job is removed or already ran it equals to :obj:`None`. """ return self.job.next_run_time @classmethod def from_aps_job(cls, job: 'Job', job_queue: JobQueue) -> 'Job': # context based callbacks if len(job.args) == 1: context = job.args[0].job.context else: context = job.args[1].context return cls(job.func, context=context, name=job.name, job_queue=job_queue, job=job) def __getattr__(self, item: str) -> Any: return getattr(self.job, item) def __lt__(self, other: object) -> bool: return False def __eq__(self, other: object) -> bool: if isinstance(other, self.__class__): return self.id == other.id return False