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19 lines
612 B
19 lines
612 B
3 years ago
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from datetime import date, datetime, timedelta
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_NO_DEFAULT = object()
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class CachedData:
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def __init__(self, getter, initial_data=_NO_DEFAULT, validity=1000):
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self.getter = getter
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self.data = initial_data
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self.last_refresh_date = datetime.now()
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self.validity = timedelta(milliseconds=validity)
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if initial_data == _NO_DEFAULT:
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self.last_refresh_date -= self.validity
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def __call__(self, *args, **kwds):
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if self.last_refresh_date + self.validity < datetime.now():
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self.data = self.getter()
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self.last_refresh_date = datetime.now()
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return self.data, self.last_refresh_date
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