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bazarr/libs/subliminal_patch/providers/__init__.py

123 lines
3.7 KiB

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# coding=utf-8
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from __future__ import absolute_import
import functools
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import importlib
import os
import logging
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import subliminal
from subliminal.providers import Provider as _Provider
from subliminal.subtitle import Subtitle as _Subtitle
from subliminal_patch.extensions import provider_registry
from subliminal_patch.http import RetryingSession
from subliminal_patch.subtitle import Subtitle, guess_matches
from subzero.lib.io import get_viable_encoding
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import six
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logger = logging.getLogger(__name__)
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class Provider(_Provider):
hash_verifiable = False
hearing_impaired_verifiable = False
skip_wrong_fps = True
def ping(self):
"""Check if the provider is alive."""
return True
def reinitialize_on_error(exceptions: tuple, attempts=1):
"""Method decorator for Provider class. It will reinitialize the instance
and re-run the method in case of exceptions.
:param exceptions: tuple of expected exceptions
:param attempts: number of attempts to call the method
"""
def real_decorator(method):
@functools.wraps(method)
def wrapper(self, *args, **kwargs):
inc = 1
while True:
try:
return method(self, *args, **kwargs)
except exceptions as error:
if inc > attempts:
raise
logger.exception(error)
logger.debug("Reinitializing %s instance (%s attempt)", self, inc)
self.terminate()
self.initialize()
inc += 1
return wrapper
return real_decorator
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# register providers
# fixme: this is bad
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for name in os.listdir(os.path.dirname(__file__)):
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if name in ("__init__.py", "mixins.py", "utils.py") or not name.endswith(".py"):
continue
module_name = os.path.splitext(name)[0]
mod = importlib.import_module("subliminal_patch.providers.%s" % module_name.lower())
for item in dir(mod):
cls = getattr(mod, item)
if item != "Provider" and item.endswith("Provider") and not item.startswith("_"):
is_sz_provider = issubclass(cls, Provider)
is_provider = issubclass(cls, _Provider)
if not is_provider:
continue
if not is_sz_provider:
# patch provider bases
new_bases = []
for base in cls.__bases__:
if base == _Provider:
base = Provider
else:
if _Provider in base.__bases__:
base.__bases__ = (Provider,)
new_bases.append(base)
cls.__bases__ = tuple(new_bases)
# patch subtitle bases
new_bases = []
for base in cls.subtitle_class.__bases__:
if base == _Subtitle:
base = Subtitle
else:
if _Subtitle in base.__bases__:
base.__bases__ = (Subtitle,)
new_bases.append(base)
cls.subtitle_class.__bases__ = tuple(new_bases)
# inject our requests.Session wrapper for automatic retry
mod.Session = RetryingSession
mod.guess_matches = guess_matches
provider_registry.register(module_name, cls)
# try patching the correspondent subliminal provider
try:
subliminal_mod = importlib.import_module("subliminal.providers.%s" % module_name.lower())
except ImportError:
pass
else:
subliminal_mod.Session = RetryingSession
subliminal_mod.guess_matches = guess_matches