mirror of
https://github.com/evilhero/mylar
synced 2024-12-23 00:02:38 +00:00
21eee17344
torrents will now properly hide torrent information, IMP: Specified daemon port for deluge as an on-screen tip for more detail, IMP: Added 100,200,ALL as viewable watchlist views, FIX: When viewing pullist and annual integration enabled, if annual was present would incorrectly link to invalid annual series instead of the actual series itself, IMP: Added more detail error messages to metatagging errors and better handling of stranded files during cleanup, IMP: Improved some handling for weekly pull-list one-off's and refactored the nzb/oneoff post-processing into a seperate function for future callables, Moved all the main url locations for public torrent sites to the init module so that it can be cascaded down for use in other modules instead as a global, IMP: Added a 'deep_search_32p' variable in the config.ini for specific usage with 32p, where if there is more than one result will dig deeper into each result to try and figure out if there are series matches, as opposed to the default where it will only use ref32p table if available or just the first hit in a multiple series search results and ignore the remainder, FIX:Fixed some unknown characters appearing in the pullist due to unicode-related conversion problems, FIX: fixed some special cases of file parsing errors due to Volume label being named different than expected, FIX: Added a 3s pause between experimental searches to try and not hit their frequency limitation, IMP: Weekly Pullist One-off's will now show status of Snatched/Downloaded as required, FIX: Fixed some deluge parameter problems when using auto-snatch torrent script/option, IMP: Changed the downlocation in the auto-snatch option to an env variable instead of being passed to avoid unicode-related problems, FIX: Fixed some magnet-related issues for torrents when using a watchdir + TPSE, FIX: Added more verbose error message for rtorrent connection issues, FIX: Could not connect to rtorrent client if no username/password were provided, IMP: Set the db updater to run every 5 minutes on the watchlist, automatically refreshing the oldest updated series each time that is more than 5 hours old (force db update from the activity/job schedulers page will run the db updater against the entire watchlist in sequence), IMP: Attempt to handle long paths in windows (ie. > 256c) by prepending the unicode windows api character to the import a directory path (windows only), IMP: When manual metatagging a series, will update the series after all the metatagging has been completed as opposed to after each issue, IMP: Will now display available inkdrops on Config/Search Providers tab when using 32P (future will utilize/indicate inkdrop threshold when downloading)
631 lines
22 KiB
Python
631 lines
22 KiB
Python
# Copyright 2009 Brian Quinlan. All Rights Reserved.
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# Licensed to PSF under a Contributor Agreement.
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import collections
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import logging
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import threading
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import itertools
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import time
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import types
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__author__ = 'Brian Quinlan (brian@sweetapp.com)'
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FIRST_COMPLETED = 'FIRST_COMPLETED'
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FIRST_EXCEPTION = 'FIRST_EXCEPTION'
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ALL_COMPLETED = 'ALL_COMPLETED'
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_AS_COMPLETED = '_AS_COMPLETED'
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# Possible future states (for internal use by the futures package).
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PENDING = 'PENDING'
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RUNNING = 'RUNNING'
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# The future was cancelled by the user...
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CANCELLED = 'CANCELLED'
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# ...and _Waiter.add_cancelled() was called by a worker.
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CANCELLED_AND_NOTIFIED = 'CANCELLED_AND_NOTIFIED'
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FINISHED = 'FINISHED'
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_FUTURE_STATES = [
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PENDING,
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RUNNING,
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CANCELLED,
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CANCELLED_AND_NOTIFIED,
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FINISHED
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]
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_STATE_TO_DESCRIPTION_MAP = {
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PENDING: "pending",
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RUNNING: "running",
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CANCELLED: "cancelled",
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CANCELLED_AND_NOTIFIED: "cancelled",
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FINISHED: "finished"
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}
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# Logger for internal use by the futures package.
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LOGGER = logging.getLogger("concurrent.futures")
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class Error(Exception):
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"""Base class for all future-related exceptions."""
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pass
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class CancelledError(Error):
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"""The Future was cancelled."""
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pass
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class TimeoutError(Error):
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"""The operation exceeded the given deadline."""
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pass
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class _Waiter(object):
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"""Provides the event that wait() and as_completed() block on."""
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def __init__(self):
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self.event = threading.Event()
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self.finished_futures = []
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def add_result(self, future):
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self.finished_futures.append(future)
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def add_exception(self, future):
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self.finished_futures.append(future)
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def add_cancelled(self, future):
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self.finished_futures.append(future)
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class _AsCompletedWaiter(_Waiter):
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"""Used by as_completed()."""
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def __init__(self):
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super(_AsCompletedWaiter, self).__init__()
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self.lock = threading.Lock()
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def add_result(self, future):
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with self.lock:
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super(_AsCompletedWaiter, self).add_result(future)
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self.event.set()
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def add_exception(self, future):
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with self.lock:
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super(_AsCompletedWaiter, self).add_exception(future)
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self.event.set()
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def add_cancelled(self, future):
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with self.lock:
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super(_AsCompletedWaiter, self).add_cancelled(future)
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self.event.set()
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class _FirstCompletedWaiter(_Waiter):
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"""Used by wait(return_when=FIRST_COMPLETED)."""
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def add_result(self, future):
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super(_FirstCompletedWaiter, self).add_result(future)
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self.event.set()
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def add_exception(self, future):
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super(_FirstCompletedWaiter, self).add_exception(future)
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self.event.set()
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def add_cancelled(self, future):
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super(_FirstCompletedWaiter, self).add_cancelled(future)
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self.event.set()
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class _AllCompletedWaiter(_Waiter):
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"""Used by wait(return_when=FIRST_EXCEPTION and ALL_COMPLETED)."""
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def __init__(self, num_pending_calls, stop_on_exception):
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self.num_pending_calls = num_pending_calls
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self.stop_on_exception = stop_on_exception
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self.lock = threading.Lock()
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super(_AllCompletedWaiter, self).__init__()
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def _decrement_pending_calls(self):
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with self.lock:
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self.num_pending_calls -= 1
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if not self.num_pending_calls:
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self.event.set()
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def add_result(self, future):
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super(_AllCompletedWaiter, self).add_result(future)
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self._decrement_pending_calls()
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def add_exception(self, future):
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super(_AllCompletedWaiter, self).add_exception(future)
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if self.stop_on_exception:
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self.event.set()
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else:
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self._decrement_pending_calls()
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def add_cancelled(self, future):
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super(_AllCompletedWaiter, self).add_cancelled(future)
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self._decrement_pending_calls()
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class _AcquireFutures(object):
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"""A context manager that does an ordered acquire of Future conditions."""
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def __init__(self, futures):
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self.futures = sorted(futures, key=id)
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def __enter__(self):
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for future in self.futures:
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future._condition.acquire()
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def __exit__(self, *args):
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for future in self.futures:
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future._condition.release()
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def _create_and_install_waiters(fs, return_when):
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if return_when == _AS_COMPLETED:
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waiter = _AsCompletedWaiter()
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elif return_when == FIRST_COMPLETED:
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waiter = _FirstCompletedWaiter()
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else:
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pending_count = sum(
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f._state not in [CANCELLED_AND_NOTIFIED, FINISHED] for f in fs)
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if return_when == FIRST_EXCEPTION:
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waiter = _AllCompletedWaiter(pending_count, stop_on_exception=True)
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elif return_when == ALL_COMPLETED:
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waiter = _AllCompletedWaiter(pending_count, stop_on_exception=False)
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else:
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raise ValueError("Invalid return condition: %r" % return_when)
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for f in fs:
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f._waiters.append(waiter)
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return waiter
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def as_completed(fs, timeout=None):
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"""An iterator over the given futures that yields each as it completes.
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Args:
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fs: The sequence of Futures (possibly created by different Executors) to
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iterate over.
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timeout: The maximum number of seconds to wait. If None, then there
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is no limit on the wait time.
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Returns:
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An iterator that yields the given Futures as they complete (finished or
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cancelled). If any given Futures are duplicated, they will be returned
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once.
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Raises:
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TimeoutError: If the entire result iterator could not be generated
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before the given timeout.
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"""
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if timeout is not None:
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end_time = timeout + time.time()
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fs = set(fs)
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with _AcquireFutures(fs):
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finished = set(
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f for f in fs
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if f._state in [CANCELLED_AND_NOTIFIED, FINISHED])
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pending = fs - finished
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waiter = _create_and_install_waiters(fs, _AS_COMPLETED)
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try:
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for future in finished:
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yield future
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while pending:
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if timeout is None:
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wait_timeout = None
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else:
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wait_timeout = end_time - time.time()
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if wait_timeout < 0:
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raise TimeoutError(
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'%d (of %d) futures unfinished' % (
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len(pending), len(fs)))
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waiter.event.wait(wait_timeout)
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with waiter.lock:
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finished = waiter.finished_futures
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waiter.finished_futures = []
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waiter.event.clear()
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for future in finished:
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yield future
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pending.remove(future)
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finally:
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for f in fs:
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with f._condition:
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f._waiters.remove(waiter)
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DoneAndNotDoneFutures = collections.namedtuple(
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'DoneAndNotDoneFutures', 'done not_done')
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def wait(fs, timeout=None, return_when=ALL_COMPLETED):
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"""Wait for the futures in the given sequence to complete.
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Args:
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fs: The sequence of Futures (possibly created by different Executors) to
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wait upon.
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timeout: The maximum number of seconds to wait. If None, then there
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is no limit on the wait time.
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return_when: Indicates when this function should return. The options
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are:
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FIRST_COMPLETED - Return when any future finishes or is
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cancelled.
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FIRST_EXCEPTION - Return when any future finishes by raising an
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exception. If no future raises an exception
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then it is equivalent to ALL_COMPLETED.
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ALL_COMPLETED - Return when all futures finish or are cancelled.
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Returns:
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A named 2-tuple of sets. The first set, named 'done', contains the
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futures that completed (is finished or cancelled) before the wait
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completed. The second set, named 'not_done', contains uncompleted
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futures.
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"""
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with _AcquireFutures(fs):
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done = set(f for f in fs
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if f._state in [CANCELLED_AND_NOTIFIED, FINISHED])
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not_done = set(fs) - done
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if (return_when == FIRST_COMPLETED) and done:
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return DoneAndNotDoneFutures(done, not_done)
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elif (return_when == FIRST_EXCEPTION) and done:
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if any(f for f in done
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if not f.cancelled() and f.exception() is not None):
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return DoneAndNotDoneFutures(done, not_done)
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if len(done) == len(fs):
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return DoneAndNotDoneFutures(done, not_done)
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waiter = _create_and_install_waiters(fs, return_when)
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waiter.event.wait(timeout)
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for f in fs:
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with f._condition:
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f._waiters.remove(waiter)
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done.update(waiter.finished_futures)
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return DoneAndNotDoneFutures(done, set(fs) - done)
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class Future(object):
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"""Represents the result of an asynchronous computation."""
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def __init__(self):
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"""Initializes the future. Should not be called by clients."""
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self._condition = threading.Condition()
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self._state = PENDING
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self._result = None
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self._exception = None
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self._traceback = None
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self._waiters = []
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self._done_callbacks = []
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def _invoke_callbacks(self):
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for callback in self._done_callbacks:
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try:
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callback(self)
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except Exception:
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LOGGER.exception('exception calling callback for %r', self)
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except BaseException:
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# Explicitly let all other new-style exceptions through so
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# that we can catch all old-style exceptions with a simple
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# "except:" clause below.
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#
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# All old-style exception objects are instances of
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# types.InstanceType, but "except types.InstanceType:" does
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# not catch old-style exceptions for some reason. Thus, the
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# only way to catch all old-style exceptions without catching
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# any new-style exceptions is to filter out the new-style
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# exceptions, which all derive from BaseException.
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raise
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except:
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# Because of the BaseException clause above, this handler only
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# executes for old-style exception objects.
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LOGGER.exception('exception calling callback for %r', self)
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def __repr__(self):
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with self._condition:
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if self._state == FINISHED:
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if self._exception:
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return '<Future at %s state=%s raised %s>' % (
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hex(id(self)),
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_STATE_TO_DESCRIPTION_MAP[self._state],
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self._exception.__class__.__name__)
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else:
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return '<Future at %s state=%s returned %s>' % (
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hex(id(self)),
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_STATE_TO_DESCRIPTION_MAP[self._state],
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self._result.__class__.__name__)
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return '<Future at %s state=%s>' % (
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hex(id(self)),
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_STATE_TO_DESCRIPTION_MAP[self._state])
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def cancel(self):
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"""Cancel the future if possible.
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Returns True if the future was cancelled, False otherwise. A future
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cannot be cancelled if it is running or has already completed.
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"""
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with self._condition:
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if self._state in [RUNNING, FINISHED]:
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return False
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if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
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return True
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self._state = CANCELLED
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self._condition.notify_all()
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self._invoke_callbacks()
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return True
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def cancelled(self):
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"""Return True if the future has cancelled."""
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with self._condition:
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return self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]
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def running(self):
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"""Return True if the future is currently executing."""
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with self._condition:
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return self._state == RUNNING
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def done(self):
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"""Return True of the future was cancelled or finished executing."""
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with self._condition:
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return self._state in [CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED]
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def __get_result(self):
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if self._exception:
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if isinstance(self._exception, types.InstanceType):
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# The exception is an instance of an old-style class, which
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# means type(self._exception) returns types.ClassType instead
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# of the exception's actual class type.
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exception_type = self._exception.__class__
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else:
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exception_type = type(self._exception)
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raise exception_type, self._exception, self._traceback
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else:
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return self._result
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def add_done_callback(self, fn):
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"""Attaches a callable that will be called when the future finishes.
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Args:
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fn: A callable that will be called with this future as its only
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argument when the future completes or is cancelled. The callable
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will always be called by a thread in the same process in which
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it was added. If the future has already completed or been
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cancelled then the callable will be called immediately. These
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callables are called in the order that they were added.
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"""
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with self._condition:
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if self._state not in [CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED]:
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self._done_callbacks.append(fn)
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return
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fn(self)
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def result(self, timeout=None):
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"""Return the result of the call that the future represents.
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Args:
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timeout: The number of seconds to wait for the result if the future
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isn't done. If None, then there is no limit on the wait time.
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Returns:
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The result of the call that the future represents.
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Raises:
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CancelledError: If the future was cancelled.
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TimeoutError: If the future didn't finish executing before the given
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timeout.
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Exception: If the call raised then that exception will be raised.
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"""
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with self._condition:
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if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
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raise CancelledError()
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elif self._state == FINISHED:
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return self.__get_result()
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self._condition.wait(timeout)
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if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
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raise CancelledError()
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elif self._state == FINISHED:
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return self.__get_result()
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else:
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raise TimeoutError()
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def exception_info(self, timeout=None):
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"""Return a tuple of (exception, traceback) raised by the call that the
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future represents.
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Args:
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timeout: The number of seconds to wait for the exception if the
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future isn't done. If None, then there is no limit on the wait
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time.
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Returns:
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The exception raised by the call that the future represents or None
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if the call completed without raising.
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Raises:
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CancelledError: If the future was cancelled.
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TimeoutError: If the future didn't finish executing before the given
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timeout.
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"""
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with self._condition:
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if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
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raise CancelledError()
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elif self._state == FINISHED:
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return self._exception, self._traceback
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self._condition.wait(timeout)
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if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
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raise CancelledError()
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elif self._state == FINISHED:
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return self._exception, self._traceback
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else:
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raise TimeoutError()
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|
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def exception(self, timeout=None):
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"""Return the exception raised by the call that the future represents.
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Args:
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timeout: The number of seconds to wait for the exception if the
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future isn't done. If None, then there is no limit on the wait
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time.
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Returns:
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The exception raised by the call that the future represents or None
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if the call completed without raising.
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Raises:
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CancelledError: If the future was cancelled.
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TimeoutError: If the future didn't finish executing before the given
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timeout.
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"""
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return self.exception_info(timeout)[0]
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|
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# The following methods should only be used by Executors and in tests.
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def set_running_or_notify_cancel(self):
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"""Mark the future as running or process any cancel notifications.
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Should only be used by Executor implementations and unit tests.
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|
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If the future has been cancelled (cancel() was called and returned
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True) then any threads waiting on the future completing (though calls
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to as_completed() or wait()) are notified and False is returned.
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If the future was not cancelled then it is put in the running state
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(future calls to running() will return True) and True is returned.
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|
|
This method should be called by Executor implementations before
|
|
executing the work associated with this future. If this method returns
|
|
False then the work should not be executed.
|
|
|
|
Returns:
|
|
False if the Future was cancelled, True otherwise.
|
|
|
|
Raises:
|
|
RuntimeError: if this method was already called or if set_result()
|
|
or set_exception() was called.
|
|
"""
|
|
with self._condition:
|
|
if self._state == CANCELLED:
|
|
self._state = CANCELLED_AND_NOTIFIED
|
|
for waiter in self._waiters:
|
|
waiter.add_cancelled(self)
|
|
# self._condition.notify_all() is not necessary because
|
|
# self.cancel() triggers a notification.
|
|
return False
|
|
elif self._state == PENDING:
|
|
self._state = RUNNING
|
|
return True
|
|
else:
|
|
LOGGER.critical('Future %s in unexpected state: %s',
|
|
id(self),
|
|
self._state)
|
|
raise RuntimeError('Future in unexpected state')
|
|
|
|
def set_result(self, result):
|
|
"""Sets the return value of work associated with the future.
|
|
|
|
Should only be used by Executor implementations and unit tests.
|
|
"""
|
|
with self._condition:
|
|
self._result = result
|
|
self._state = FINISHED
|
|
for waiter in self._waiters:
|
|
waiter.add_result(self)
|
|
self._condition.notify_all()
|
|
self._invoke_callbacks()
|
|
|
|
def set_exception_info(self, exception, traceback):
|
|
"""Sets the result of the future as being the given exception
|
|
and traceback.
|
|
|
|
Should only be used by Executor implementations and unit tests.
|
|
"""
|
|
with self._condition:
|
|
self._exception = exception
|
|
self._traceback = traceback
|
|
self._state = FINISHED
|
|
for waiter in self._waiters:
|
|
waiter.add_exception(self)
|
|
self._condition.notify_all()
|
|
self._invoke_callbacks()
|
|
|
|
def set_exception(self, exception):
|
|
"""Sets the result of the future as being the given exception.
|
|
|
|
Should only be used by Executor implementations and unit tests.
|
|
"""
|
|
self.set_exception_info(exception, None)
|
|
|
|
class Executor(object):
|
|
"""This is an abstract base class for concrete asynchronous executors."""
|
|
|
|
def submit(self, fn, *args, **kwargs):
|
|
"""Submits a callable to be executed with the given arguments.
|
|
|
|
Schedules the callable to be executed as fn(*args, **kwargs) and returns
|
|
a Future instance representing the execution of the callable.
|
|
|
|
Returns:
|
|
A Future representing the given call.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def map(self, fn, *iterables, **kwargs):
|
|
"""Returns a iterator equivalent to map(fn, iter).
|
|
|
|
Args:
|
|
fn: A callable that will take as many arguments as there are
|
|
passed iterables.
|
|
timeout: The maximum number of seconds to wait. If None, then there
|
|
is no limit on the wait time.
|
|
|
|
Returns:
|
|
An iterator equivalent to: map(func, *iterables) but the calls may
|
|
be evaluated out-of-order.
|
|
|
|
Raises:
|
|
TimeoutError: If the entire result iterator could not be generated
|
|
before the given timeout.
|
|
Exception: If fn(*args) raises for any values.
|
|
"""
|
|
timeout = kwargs.get('timeout')
|
|
if timeout is not None:
|
|
end_time = timeout + time.time()
|
|
|
|
fs = [self.submit(fn, *args) for args in itertools.izip(*iterables)]
|
|
|
|
# Yield must be hidden in closure so that the futures are submitted
|
|
# before the first iterator value is required.
|
|
def result_iterator():
|
|
try:
|
|
for future in fs:
|
|
if timeout is None:
|
|
yield future.result()
|
|
else:
|
|
yield future.result(end_time - time.time())
|
|
finally:
|
|
for future in fs:
|
|
future.cancel()
|
|
return result_iterator()
|
|
|
|
def shutdown(self, wait=True):
|
|
"""Clean-up the resources associated with the Executor.
|
|
|
|
It is safe to call this method several times. Otherwise, no other
|
|
methods can be called after this one.
|
|
|
|
Args:
|
|
wait: If True then shutdown will not return until all running
|
|
futures have finished executing and the resources used by the
|
|
executor have been reclaimed.
|
|
"""
|
|
pass
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
self.shutdown(wait=True)
|
|
return False
|