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https://github.com/dmunozv04/iSponsorBlockTV.git
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86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
import datetime
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from cache.key import KEY
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from cache.lru import LRU
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# MIT License
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# Copyright (c) 2020 Rajat Singh
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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# Modified code from https://github.com/iamsinghrajat/async-cache
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class AsyncConditionalTTL:
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class _TTL(LRU):
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def __init__(self, time_to_live, maxsize):
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super().__init__(maxsize=maxsize)
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self.time_to_live = datetime.timedelta(seconds=time_to_live) if time_to_live else None
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self.maxsize = maxsize
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def __contains__(self, key):
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if key not in self.keys():
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return False
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key_expiration = super().__getitem__(key)[1]
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if key_expiration and key_expiration < datetime.datetime.now():
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del self[key]
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return False
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return True
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def __getitem__(self, key):
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value = super().__getitem__(key)[0]
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return value
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def __setitem__(self, key, value):
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value, ignore_ttl = value # unpack tuple
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ttl_value = (
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(datetime.datetime.now() + self.time_to_live)
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if (self.time_to_live and not ignore_ttl)
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else None
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) # ignore ttl if ignore_ttl is True
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super().__setitem__(key, (value, ttl_value))
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def __init__(self, time_to_live=60, maxsize=1024, skip_args: int = 0):
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"""
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:param time_to_live: Use time_to_live as None for non expiring cache
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:param maxsize: Use maxsize as None for unlimited size cache
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:param skip_args: Use `1` to skip first arg of func in determining cache key
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"""
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self.ttl = self._TTL(time_to_live=time_to_live, maxsize=maxsize)
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self.skip_args = skip_args
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def __call__(self, func):
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async def wrapper(*args, **kwargs):
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key = KEY(args[self.skip_args :], kwargs)
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if key in self.ttl:
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val = self.ttl[key]
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else:
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self.ttl[key] = await func(*args, **kwargs)
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val = self.ttl[key]
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return val
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wrapper.__name__ += func.__name__
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return wrapper
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