mirror of
https://github.com/moparisthebest/SickRage
synced 2024-11-14 13:25:11 -05:00
0d9fbc1ad7
This version of SickBeard uses both TVDB and TVRage to search and gather it's series data from allowing you to now have access to and download shows that you couldn't before because of being locked into only what TheTVDB had to offer. Also this edition is based off the code we used in our XEM editon so it does come with scene numbering support as well as all the other features our XEM edition has to offer. Please before using this with your existing database (sickbeard.db) please make a backup copy of it and delete any other database files such as cache.db and failed.db if present, we HIGHLY recommend starting out with no database files at all to make this a fresh start but the choice is at your own risk! Enjoy!
563 lines
20 KiB
Python
563 lines
20 KiB
Python
"""Site services for use with a Web Site Process Bus."""
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import os
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import re
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try:
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set
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except NameError:
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from sets import Set as set
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import signal as _signal
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import sys
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import time
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import thread
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import threading
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# _module__file__base is used by Autoreload to make
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# absolute any filenames retrieved from sys.modules which are not
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# already absolute paths. This is to work around Python's quirk
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# of importing the startup script and using a relative filename
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# for it in sys.modules.
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#
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# Autoreload examines sys.modules afresh every time it runs. If an application
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# changes the current directory by executing os.chdir(), then the next time
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# Autoreload runs, it will not be able to find any filenames which are
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# not absolute paths, because the current directory is not the same as when the
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# module was first imported. Autoreload will then wrongly conclude the file has
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# "changed", and initiate the shutdown/re-exec sequence.
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# See ticket #917.
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# For this workaround to have a decent probability of success, this module
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# needs to be imported as early as possible, before the app has much chance
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# to change the working directory.
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_module__file__base = os.getcwd()
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class SimplePlugin(object):
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"""Plugin base class which auto-subscribes methods for known channels."""
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def __init__(self, bus):
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self.bus = bus
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def subscribe(self):
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"""Register this object as a (multi-channel) listener on the bus."""
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for channel in self.bus.listeners:
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# Subscribe self.start, self.exit, etc. if present.
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method = getattr(self, channel, None)
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if method is not None:
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self.bus.subscribe(channel, method)
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def unsubscribe(self):
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"""Unregister this object as a listener on the bus."""
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for channel in self.bus.listeners:
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# Unsubscribe self.start, self.exit, etc. if present.
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method = getattr(self, channel, None)
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if method is not None:
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self.bus.unsubscribe(channel, method)
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class SignalHandler(object):
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"""Register bus channels (and listeners) for system signals.
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By default, instantiating this object subscribes the following signals
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and listeners:
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TERM: bus.exit
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HUP : bus.restart
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USR1: bus.graceful
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"""
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# Map from signal numbers to names
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signals = {}
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for k, v in vars(_signal).items():
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if k.startswith('SIG') and not k.startswith('SIG_'):
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signals[v] = k
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del k, v
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def __init__(self, bus):
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self.bus = bus
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# Set default handlers
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self.handlers = {'SIGTERM': self.bus.exit,
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'SIGHUP': self.handle_SIGHUP,
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'SIGUSR1': self.bus.graceful,
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}
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self._previous_handlers = {}
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def subscribe(self):
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for sig, func in self.handlers.items():
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try:
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self.set_handler(sig, func)
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except ValueError:
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pass
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def unsubscribe(self):
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for signum, handler in self._previous_handlers.items():
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signame = self.signals[signum]
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if handler is None:
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self.bus.log("Restoring %s handler to SIG_DFL." % signame)
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handler = _signal.SIG_DFL
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else:
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self.bus.log("Restoring %s handler %r." % (signame, handler))
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try:
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our_handler = _signal.signal(signum, handler)
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if our_handler is None:
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self.bus.log("Restored old %s handler %r, but our "
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"handler was not registered." %
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(signame, handler), level=30)
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except ValueError:
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self.bus.log("Unable to restore %s handler %r." %
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(signame, handler), level=40, traceback=True)
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def set_handler(self, signal, listener=None):
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"""Subscribe a handler for the given signal (number or name).
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If the optional 'listener' argument is provided, it will be
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subscribed as a listener for the given signal's channel.
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If the given signal name or number is not available on the current
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platform, ValueError is raised.
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"""
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if isinstance(signal, basestring):
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signum = getattr(_signal, signal, None)
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if signum is None:
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raise ValueError("No such signal: %r" % signal)
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signame = signal
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else:
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try:
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signame = self.signals[signal]
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except KeyError:
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raise ValueError("No such signal: %r" % signal)
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signum = signal
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prev = _signal.signal(signum, self._handle_signal)
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self._previous_handlers[signum] = prev
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if listener is not None:
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self.bus.log("Listening for %s." % signame)
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self.bus.subscribe(signame, listener)
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def _handle_signal(self, signum=None, frame=None):
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"""Python signal handler (self.set_handler subscribes it for you)."""
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signame = self.signals[signum]
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self.bus.log("Caught signal %s." % signame)
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self.bus.publish(signame)
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def handle_SIGHUP(self):
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if os.isatty(sys.stdin.fileno()):
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# not daemonized (may be foreground or background)
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self.bus.log("SIGHUP caught but not daemonized. Exiting.")
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self.bus.exit()
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else:
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self.bus.log("SIGHUP caught while daemonized. Restarting.")
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self.bus.restart()
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try:
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import pwd, grp
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except ImportError:
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pwd, grp = None, None
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class DropPrivileges(SimplePlugin):
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"""Drop privileges. uid/gid arguments not available on Windows.
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Special thanks to Gavin Baker: http://antonym.org/node/100.
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"""
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def __init__(self, bus, umask=None, uid=None, gid=None):
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SimplePlugin.__init__(self, bus)
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self.finalized = False
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self.uid = uid
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self.gid = gid
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self.umask = umask
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def _get_uid(self):
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return self._uid
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def _set_uid(self, val):
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if val is not None:
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if pwd is None:
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self.bus.log("pwd module not available; ignoring uid.",
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level=30)
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val = None
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elif isinstance(val, basestring):
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val = pwd.getpwnam(val)[2]
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self._uid = val
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uid = property(_get_uid, _set_uid, doc="The uid under which to run.")
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def _get_gid(self):
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return self._gid
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def _set_gid(self, val):
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if val is not None:
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if grp is None:
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self.bus.log("grp module not available; ignoring gid.",
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level=30)
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val = None
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elif isinstance(val, basestring):
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val = grp.getgrnam(val)[2]
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self._gid = val
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gid = property(_get_gid, _set_gid, doc="The gid under which to run.")
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def _get_umask(self):
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return self._umask
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def _set_umask(self, val):
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if val is not None:
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try:
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os.umask
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except AttributeError:
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self.bus.log("umask function not available; ignoring umask.",
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level=30)
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val = None
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self._umask = val
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umask = property(_get_umask, _set_umask, doc="The umask under which to run.")
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def start(self):
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# uid/gid
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def current_ids():
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"""Return the current (uid, gid) if available."""
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name, group = None, None
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if pwd:
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name = pwd.getpwuid(os.getuid())[0]
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if grp:
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group = grp.getgrgid(os.getgid())[0]
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return name, group
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if self.finalized:
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if not (self.uid is None and self.gid is None):
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self.bus.log('Already running as uid: %r gid: %r' %
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current_ids())
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else:
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if self.uid is None and self.gid is None:
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if pwd or grp:
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self.bus.log('uid/gid not set', level=30)
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else:
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self.bus.log('Started as uid: %r gid: %r' % current_ids())
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if self.gid is not None:
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os.setgid(self.gid)
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if self.uid is not None:
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os.setuid(self.uid)
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self.bus.log('Running as uid: %r gid: %r' % current_ids())
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# umask
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if self.finalized:
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if self.umask is not None:
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self.bus.log('umask already set to: %03o' % self.umask)
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else:
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if self.umask is None:
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self.bus.log('umask not set', level=30)
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else:
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old_umask = os.umask(self.umask)
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self.bus.log('umask old: %03o, new: %03o' %
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(old_umask, self.umask))
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self.finalized = True
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# This is slightly higher than the priority for server.start
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# in order to facilitate the most common use: starting on a low
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# port (which requires root) and then dropping to another user.
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start.priority = 77
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class Daemonizer(SimplePlugin):
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"""Daemonize the running script.
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Use this with a Web Site Process Bus via:
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Daemonizer(bus).subscribe()
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When this component finishes, the process is completely decoupled from
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the parent environment. Please note that when this component is used,
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the return code from the parent process will still be 0 if a startup
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error occurs in the forked children. Errors in the initial daemonizing
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process still return proper exit codes. Therefore, if you use this
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plugin to daemonize, don't use the return code as an accurate indicator
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of whether the process fully started. In fact, that return code only
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indicates if the process succesfully finished the first fork.
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"""
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def __init__(self, bus, stdin='/dev/null', stdout='/dev/null',
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stderr='/dev/null'):
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SimplePlugin.__init__(self, bus)
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self.stdin = stdin
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self.stdout = stdout
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self.stderr = stderr
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self.finalized = False
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def start(self):
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if self.finalized:
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self.bus.log('Already deamonized.')
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# forking has issues with threads:
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# http://www.opengroup.org/onlinepubs/000095399/functions/fork.html
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# "The general problem with making fork() work in a multi-threaded
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# world is what to do with all of the threads..."
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# So we check for active threads:
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if threading.activeCount() != 1:
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self.bus.log('There are %r active threads. '
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'Daemonizing now may cause strange failures.' %
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threading.enumerate(), level=30)
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# See http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
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# (or http://www.faqs.org/faqs/unix-faq/programmer/faq/ section 1.7)
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# and http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66012
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# Finish up with the current stdout/stderr
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sys.stdout.flush()
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sys.stderr.flush()
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# Do first fork.
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try:
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pid = os.fork()
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if pid == 0:
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# This is the child process. Continue.
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pass
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else:
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# This is the first parent. Exit, now that we've forked.
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self.bus.log('Forking once.')
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os._exit(0)
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except OSError, exc:
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# Python raises OSError rather than returning negative numbers.
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sys.exit("%s: fork #1 failed: (%d) %s\n"
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% (sys.argv[0], exc.errno, exc.strerror))
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os.setsid()
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# Do second fork
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try:
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pid = os.fork()
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if pid > 0:
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self.bus.log('Forking twice.')
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os._exit(0) # Exit second parent
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except OSError, exc:
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sys.exit("%s: fork #2 failed: (%d) %s\n"
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% (sys.argv[0], exc.errno, exc.strerror))
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os.chdir("/")
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os.umask(0)
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si = open(self.stdin, "r")
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so = open(self.stdout, "a+")
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se = open(self.stderr, "a+")
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# os.dup2(fd, fd2) will close fd2 if necessary,
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# so we don't explicitly close stdin/out/err.
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# See http://docs.python.org/lib/os-fd-ops.html
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os.dup2(si.fileno(), sys.stdin.fileno())
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os.dup2(so.fileno(), sys.stdout.fileno())
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os.dup2(se.fileno(), sys.stderr.fileno())
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self.bus.log('Daemonized to PID: %s' % os.getpid())
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self.finalized = True
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start.priority = 65
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class PIDFile(SimplePlugin):
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"""Maintain a PID file via a WSPBus."""
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def __init__(self, bus, pidfile):
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SimplePlugin.__init__(self, bus)
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self.pidfile = pidfile
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self.finalized = False
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def start(self):
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pid = os.getpid()
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if self.finalized:
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self.bus.log('PID %r already written to %r.' % (pid, self.pidfile))
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else:
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open(self.pidfile, "wb").write(str(pid))
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self.bus.log('PID %r written to %r.' % (pid, self.pidfile))
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self.finalized = True
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start.priority = 70
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def exit(self):
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try:
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os.remove(self.pidfile)
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self.bus.log('PID file removed: %r.' % self.pidfile)
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except (KeyboardInterrupt, SystemExit):
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raise
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except:
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pass
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class PerpetualTimer(threading._Timer):
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"""A subclass of threading._Timer whose run() method repeats."""
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def run(self):
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while True:
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self.finished.wait(self.interval)
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if self.finished.isSet():
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return
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try:
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self.function(*self.args, **self.kwargs)
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except Exception, x:
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self.bus.log("Error in perpetual timer thread function %r." %
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self.function, level=40, traceback=True)
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# Quit on first error to avoid massive logs.
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raise
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class Monitor(SimplePlugin):
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"""WSPBus listener to periodically run a callback in its own thread.
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bus: a Web Site Process Bus object.
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callback: the function to call at intervals.
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frequency: the time in seconds between callback runs.
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"""
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frequency = 60
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def __init__(self, bus, callback, frequency=60, name=None):
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SimplePlugin.__init__(self, bus)
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self.callback = callback
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self.frequency = frequency
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self.thread = None
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self.name = name
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def start(self):
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"""Start our callback in its own perpetual timer thread."""
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if self.frequency > 0:
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threadname = self.name or self.__class__.__name__
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if self.thread is None:
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self.thread = PerpetualTimer(self.frequency, self.callback)
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self.thread.bus = self.bus
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self.thread.setName(threadname)
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self.thread.start()
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self.bus.log("Started monitor thread %r." % threadname)
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else:
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self.bus.log("Monitor thread %r already started." % threadname)
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start.priority = 70
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def stop(self):
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"""Stop our callback's perpetual timer thread."""
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if self.thread is None:
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self.bus.log("No thread running for %s." % self.name or self.__class__.__name__)
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else:
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if self.thread is not threading.currentThread():
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name = self.thread.getName()
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self.thread.cancel()
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self.thread.join()
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self.bus.log("Stopped thread %r." % name)
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self.thread = None
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def graceful(self):
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"""Stop the callback's perpetual timer thread and restart it."""
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self.stop()
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self.start()
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class Autoreloader(Monitor):
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"""Monitor which re-executes the process when files change."""
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frequency = 1
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match = '.*'
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def __init__(self, bus, frequency=1, match='.*'):
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self.mtimes = {}
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self.files = set()
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self.match = match
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Monitor.__init__(self, bus, self.run, frequency)
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def start(self):
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"""Start our own perpetual timer thread for self.run."""
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if self.thread is None:
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self.mtimes = {}
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Monitor.start(self)
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start.priority = 70
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def sysfiles(self):
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"""Return a Set of filenames which the Autoreloader will monitor."""
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files = set()
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for k, m in sys.modules.items():
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if re.match(self.match, k):
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if hasattr(m, '__loader__') and hasattr(m.__loader__, 'archive'):
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f = m.__loader__.archive
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else:
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f = getattr(m, '__file__', None)
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if f is not None and not os.path.isabs(f):
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# ensure absolute paths so a os.chdir() in the app doesn't break me
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f = os.path.normpath(os.path.join(_module__file__base, f))
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files.add(f)
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return files
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def run(self):
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"""Reload the process if registered files have been modified."""
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for filename in self.sysfiles() | self.files:
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if filename:
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if filename.endswith('.pyc'):
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filename = filename[:-1]
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oldtime = self.mtimes.get(filename, 0)
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if oldtime is None:
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# Module with no .py file. Skip it.
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continue
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try:
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mtime = os.stat(filename).st_mtime
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except OSError:
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# Either a module with no .py file, or it's been deleted.
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mtime = None
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if filename not in self.mtimes:
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# If a module has no .py file, this will be None.
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self.mtimes[filename] = mtime
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else:
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if mtime is None or mtime > oldtime:
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# The file has been deleted or modified.
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self.bus.log("Restarting because %s changed." % filename)
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self.thread.cancel()
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self.bus.log("Stopped thread %r." % self.thread.getName())
|
|
self.bus.restart()
|
|
return
|
|
|
|
|
|
class ThreadManager(SimplePlugin):
|
|
"""Manager for HTTP request threads.
|
|
|
|
If you have control over thread creation and destruction, publish to
|
|
the 'acquire_thread' and 'release_thread' channels (for each thread).
|
|
This will register/unregister the current thread and publish to
|
|
'start_thread' and 'stop_thread' listeners in the bus as needed.
|
|
|
|
If threads are created and destroyed by code you do not control
|
|
(e.g., Apache), then, at the beginning of every HTTP request,
|
|
publish to 'acquire_thread' only. You should not publish to
|
|
'release_thread' in this case, since you do not know whether
|
|
the thread will be re-used or not. The bus will call
|
|
'stop_thread' listeners for you when it stops.
|
|
"""
|
|
|
|
def __init__(self, bus):
|
|
self.threads = {}
|
|
SimplePlugin.__init__(self, bus)
|
|
self.bus.listeners.setdefault('acquire_thread', set())
|
|
self.bus.listeners.setdefault('release_thread', set())
|
|
|
|
def acquire_thread(self):
|
|
"""Run 'start_thread' listeners for the current thread.
|
|
|
|
If the current thread has already been seen, any 'start_thread'
|
|
listeners will not be run again.
|
|
"""
|
|
thread_ident = thread.get_ident()
|
|
if thread_ident not in self.threads:
|
|
# We can't just use _get_ident as the thread ID
|
|
# because some platforms reuse thread ID's.
|
|
i = len(self.threads) + 1
|
|
self.threads[thread_ident] = i
|
|
self.bus.publish('start_thread', i)
|
|
|
|
def release_thread(self):
|
|
"""Release the current thread and run 'stop_thread' listeners."""
|
|
thread_ident = threading._get_ident()
|
|
i = self.threads.pop(thread_ident, None)
|
|
if i is not None:
|
|
self.bus.publish('stop_thread', i)
|
|
|
|
def stop(self):
|
|
"""Release all threads and run all 'stop_thread' listeners."""
|
|
for thread_ident, i in self.threads.items():
|
|
self.bus.publish('stop_thread', i)
|
|
self.threads.clear()
|
|
graceful = stop
|
|
|