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[cache, extractor/youtube] Invalidate old cache

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pukkandan 2022-08-27 07:22:48 +05:30
parent 4e4982ab5b
commit 5e01315aa1
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GPG key ID: 7EEE9E1E817D0A39
3 changed files with 16 additions and 7 deletions
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19
yt_dlp/cache.py
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@ -6,7 +6,8 @@
import shutil
import traceback
from .utils import expand_path, write_json_file
from .utils import expand_path, traverse_obj, version_tuple, write_json_file
from .version import __version__
class Cache:
@ -45,12 +46,20 @@ def store(self, section, key, data, dtype='json'):
if ose.errno != errno.EEXIST:
raise
self._ydl.write_debug(f'Saving {section}.{key} to cache')
write_json_file(data, fn)
write_json_file({'yt-dlp_version': __version__, 'data': data}, fn)
except Exception:
tb = traceback.format_exc()
self._ydl.report_warning(f'Writing cache to {fn!r} failed: {tb}')
def load(self, section, key, dtype='json', default=None):
def _validate(self, data, after):
version = traverse_obj(data, 'yt-dlp_version')
if not version: # Backward compatibility
data, version = {'data': data}, '2022.08.19'
if not after or version_tuple(version) > version_tuple(after):
return data['data']
self._ydl.write_debug(f'Discarding old cache from version {version} (need {after})')
def load(self, section, key, dtype='json', default=None, *, after=None):
assert dtype in ('json',)
if not self.enabled:
@ -61,8 +70,8 @@ def load(self, section, key, dtype='json', default=None):
try:
with open(cache_fn, encoding='utf-8') as cachef:
self._ydl.write_debug(f'Loading {section}.{key} from cache')
return json.load(cachef)
except ValueError:
return self._validate(json.load(cachef), after)
except (ValueError, KeyError):
try:
file_size = os.path.getsize(cache_fn)
except OSError as oe:

2
yt_dlp/extractor/youtube.py
View file

@ -2659,7 +2659,7 @@ def _extract_n_function_name(self, jscode):
def _extract_n_function_code(self, video_id, player_url):
player_id = self._extract_player_info(player_url)
func_code = self.cache.load('youtube-nsig', player_id)
func_code = self.cache.load('youtube-nsig', player_id, after='2022.08.19')
jscode = func_code or self._load_player(video_id, player_url)
jsi = JSInterpreter(jscode)

2
yt_dlp/version.py
View file

@ -1,6 +1,6 @@
# Autogenerated by devscripts/update-version.py
__version__ = '2022.08.19'
__version__ = '2022.08.19.1'
RELEASE_GIT_HEAD = '48c88e088'