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Allow `compute_state_after_events` to use partial state (#14676) 

* Allow `compute_state_after_events` to use partial state

if fetching a subset of state that is trusted during a partial join.

* Changelog
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David Robertson 2022-12-14 14:52:35 +00:00 committed by GitHub
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commit 4f4d690423
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2 changed files with 9 additions and 2 deletions
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changelog.d/14676.misc Normal file
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@ -0,0 +1 @@
Faster joins: make `computer_state_after_events` consistent with other state-fetching functions that take a `StateFilter`.

10
synapse/state/__init__.py
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@ -202,14 +202,20 @@ class StateHandler:
room_id: the room_id containing the given events.
event_ids: the events whose state should be fetched and resolved.
await_full_state: if `True`, will block if we do not yet have complete state
at the given `event_id`s, regardless of whether `state_filter` is
satisfied by partial state.
at these events and `state_filter` is not satisfied by partial state.
Defaults to `True`.
Returns:
the state dict (a mapping from (event_type, state_key) -> event_id) which
holds the resolution of the states after the given event IDs.
"""
logger.debug("calling resolve_state_groups from compute_state_after_events")
if (
await_full_state
and state_filter
and not state_filter.must_await_full_state(self.hs.is_mine_id)
):
await_full_state = False
ret = await self.resolve_state_groups_for_events(
room_id, event_ids, await_full_state
)