Merge pull request #3443 from matrix-org/erikj/fast_filter_servers

Add fast path to _filter_events_for_server
pull/3449/head
Erik Johnston 2018-06-25 20:11:00 +01:00 committed by GitHub
commit 1b947d6dde
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@ -460,6 +460,47 @@ class FederationHandler(BaseHandler):
@measure_func("_filter_events_for_server")
@defer.inlineCallbacks
def _filter_events_for_server(self, server_name, room_id, events):
"""Filter the given events for the given server, redacting those the
server can't see.
Assumes the server is currently in the room.
Returns
list[FrozenEvent]
"""
# First lets check to see if all the events have a history visibility
# of "shared" or "world_readable". If thats the case then we don't
# need to check membership (as we know the server is in the room).
event_to_state_ids = yield self.store.get_state_ids_for_events(
frozenset(e.event_id for e in events),
types=(
(EventTypes.RoomHistoryVisibility, ""),
)
)
visibility_ids = set()
for sids in event_to_state_ids.itervalues():
hist = sids.get((EventTypes.RoomHistoryVisibility, ""))
if hist:
visibility_ids.add(hist)
# If we failed to find any history visibility events then the default
# is "shared" visiblity.
if not visibility_ids:
defer.returnValue(events)
event_map = yield self.store.get_events(visibility_ids)
all_open = all(
e.content.get("history_visibility") in (None, "shared", "world_readable")
for e in event_map.itervalues()
)
if all_open:
defer.returnValue(events)
# Ok, so we're dealing with events that have non-trivial visibility
# rules, so we need to also get the memberships of the room.
event_to_state_ids = yield self.store.get_state_ids_for_events(
frozenset(e.event_id for e in events),
types=(