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Create singletons for `StateFilter.{all,none}()` (#11836) 

No point recreating these for each call, since they are frozen
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Richard van der Hoff 2022-01-27 10:54:27 +00:00 committed by GitHub
parent fd65139714
commit 57e4786e90
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2 changed files with 10 additions and 5 deletions
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1
changelog.d/11836.misc Normal file
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@ -0,0 +1 @@
Minor performance improvement in room state lookup.

14
synapse/storage/state.py
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@ -74,21 +74,21 @@ class StateFilter:
@staticmethod
def all() -> "StateFilter":
"""Creates a filter that fetches everything.
"""Returns a filter that fetches everything.
Returns:
The new state filter.
The state filter.
"""
return StateFilter(types=frozendict(), include_others=True)
return _ALL_STATE_FILTER
@staticmethod
def none() -> "StateFilter":
"""Creates a filter that fetches nothing.
"""Returns a filter that fetches nothing.
Returns:
The new state filter.
"""
return StateFilter(types=frozendict(), include_others=False)
return _NONE_STATE_FILTER
@staticmethod
def from_types(types: Iterable[Tuple[str, Optional[str]]]) -> "StateFilter":
@ -527,6 +527,10 @@ class StateFilter:
)
_ALL_STATE_FILTER = StateFilter(types=frozendict(), include_others=True)
_NONE_STATE_FILTER = StateFilter(types=frozendict(), include_others=False)
class StateGroupStorage:
"""High level interface to fetching state for event."""