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Implement MSC3912: Relation-based redactions (#14260)

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Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
This commit is contained in:
Brendan Abolivier 2022-11-03 16:21:31 +00:00 • committed by GitHub
parent e5cd278f3f
commit 86c5a710d8
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10 changed files with 486 additions and 28 deletions
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47
synapse/handlers/message.py
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@ -877,6 +877,36 @@ class EventCreationHandler:
return prev_event
return None
async def get_event_from_transaction(
self,
requester: Requester,
txn_id: str,
room_id: str,
) -> Optional[EventBase]:
"""For the given transaction ID and room ID, check if there is a matching event.
If so, fetch it and return it.
Args:
requester: The requester making the request in the context of which we want
to fetch the event.
txn_id: The transaction ID.
room_id: The room ID.
Returns:
An event if one could be found, None otherwise.
"""
if requester.access_token_id:
existing_event_id = await self.store.get_event_id_from_transaction_id(
room_id,
requester.user.to_string(),
requester.access_token_id,
txn_id,
)
if existing_event_id:
return await self.store.get_event(existing_event_id)
return None
async def create_and_send_nonmember_event(
self,
requester: Requester,
@ -956,18 +986,17 @@ class EventCreationHandler:
# extremities to pile up, which in turn leads to state resolution
# taking longer.
async with self.limiter.queue(event_dict["room_id"]):
if txn_id and requester.access_token_id:
existing_event_id = await self.store.get_event_id_from_transaction_id(
event_dict["room_id"],
requester.user.to_string(),
requester.access_token_id,
txn_id,
if txn_id:
event = await self.get_event_from_transaction(
requester, txn_id, event_dict["room_id"]
)
if existing_event_id:
event = await self.store.get_event(existing_event_id)
if event:
# we know it was persisted, so must have a stream ordering
assert event.internal_metadata.stream_ordering
return event, event.internal_metadata.stream_ordering
return (
event,
event.internal_metadata.stream_ordering,
)
event, context = await self.create_event(
requester,