From d58615c82cec5bd866bedcb33e3e2a5d2a961c44 Mon Sep 17 00:00:00 2001 From: Eric Eastwood Date: Wed, 24 Aug 2022 14:13:12 -0500 Subject: [PATCH] Directly lookup local membership instead of getting all members in a room first (`get_users_in_room` mis-use) (#13608) See https://github.com/matrix-org/synapse/pull/13575#discussion_r953023755 --- changelog.d/13608.misc | 1 + synapse/handlers/events.py | 9 ++++--- synapse/handlers/message.py | 6 +++-- synapse/handlers/room.py | 7 +++-- synapse/handlers/room_member.py | 6 +++-- .../server_notices/server_notices_manager.py | 10 +++++-- synapse/storage/databases/main/roommember.py | 26 +++++++++++++++++++ tests/rest/client/test_relations.py | 12 ++++----- 8 files changed, 60 insertions(+), 17 deletions(-) create mode 100644 changelog.d/13608.misc diff --git a/changelog.d/13608.misc b/changelog.d/13608.misc new file mode 100644 index 000000000..19bcc45e3 --- /dev/null +++ b/changelog.d/13608.misc @@ -0,0 +1 @@ +Refactor `get_users_in_room(room_id)` mis-use to lookup single local user with dedicated `check_local_user_in_room(...)` function. diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py index ac13340d3..949b69cb4 100644 --- a/synapse/handlers/events.py +++ b/synapse/handlers/events.py @@ -151,7 +151,7 @@ class EventHandler: """Retrieve a single specified event. Args: - user: The user requesting the event + user: The local user requesting the event room_id: The expected room id. We'll return None if the event's room does not match. event_id: The event ID to obtain. @@ -173,8 +173,11 @@ class EventHandler: if not event: return None - users = await self.store.get_users_in_room(event.room_id) - is_peeking = user.to_string() not in users + is_user_in_room = await self.store.check_local_user_in_room( + user_id=user.to_string(), room_id=event.room_id + ) + # The user is peeking if they aren't in the room already + is_peeking = not is_user_in_room filtered = await filter_events_for_client( self._storage_controllers, user.to_string(), [event], is_peeking=is_peeking diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index acd3de06f..72157d5a3 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -761,8 +761,10 @@ class EventCreationHandler: async def _is_server_notices_room(self, room_id: str) -> bool: if self.config.servernotices.server_notices_mxid is None: return False - user_ids = await self.store.get_users_in_room(room_id) - return self.config.servernotices.server_notices_mxid in user_ids + is_server_notices_room = await self.store.check_local_user_in_room( + user_id=self.config.servernotices.server_notices_mxid, room_id=room_id + ) + return is_server_notices_room async def assert_accepted_privacy_policy(self, requester: Requester) -> None: """Check if a user has accepted the privacy policy diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 2bf0ebd02..2fc826485 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -1284,8 +1284,11 @@ class RoomContextHandler: before_limit = math.floor(limit / 2.0) after_limit = limit - before_limit - users = await self.store.get_users_in_room(room_id) - is_peeking = user.to_string() not in users + is_user_in_room = await self.store.check_local_user_in_room( + user_id=user.to_string(), room_id=room_id + ) + # The user is peeking if they aren't in the room already + is_peeking = not is_user_in_room async def filter_evts(events: List[EventBase]) -> List[EventBase]: if use_admin_priviledge: diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 65b9a655d..709682622 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -1620,8 +1620,10 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): async def _is_server_notice_room(self, room_id: str) -> bool: if self._server_notices_mxid is None: return False - user_ids = await self.store.get_users_in_room(room_id) - return self._server_notices_mxid in user_ids + is_server_notices_room = await self.store.check_local_user_in_room( + user_id=self._server_notices_mxid, room_id=room_id + ) + return is_server_notices_room class RoomMemberMasterHandler(RoomMemberHandler): diff --git a/synapse/server_notices/server_notices_manager.py b/synapse/server_notices/server_notices_manager.py index 70d054a8f..564e3705c 100644 --- a/synapse/server_notices/server_notices_manager.py +++ b/synapse/server_notices/server_notices_manager.py @@ -102,6 +102,10 @@ class ServerNoticesManager: Returns: The room's ID, or None if no room could be found. """ + # If there is no server notices MXID, then there is no server notices room + if self.server_notices_mxid is None: + return None + rooms = await self._store.get_rooms_for_local_user_where_membership_is( user_id, [Membership.INVITE, Membership.JOIN] ) @@ -111,8 +115,10 @@ class ServerNoticesManager: # be joined. This is kinda deliberate, in that if somebody somehow # manages to invite the system user to a room, that doesn't make it # the server notices room. - user_ids = await self._store.get_users_in_room(room.room_id) - if len(user_ids) <= 2 and self.server_notices_mxid in user_ids: + is_server_notices_room = await self._store.check_local_user_in_room( + user_id=self.server_notices_mxid, room_id=room.room_id + ) + if is_server_notices_room: # we found a room which our user shares with the system notice # user return room.room_id diff --git a/synapse/storage/databases/main/roommember.py b/synapse/storage/databases/main/roommember.py index 046ad3a11..9e5034b40 100644 --- a/synapse/storage/databases/main/roommember.py +++ b/synapse/storage/databases/main/roommember.py @@ -534,6 +534,32 @@ class RoomMemberWorkerStore(EventsWorkerStore): desc="get_local_users_in_room", ) + async def check_local_user_in_room(self, user_id: str, room_id: str) -> bool: + """ + Check whether a given local user is currently joined to the given room. + + Returns: + A boolean indicating whether the user is currently joined to the room + + Raises: + Exeption when called with a non-local user to this homeserver + """ + if not self.hs.is_mine_id(user_id): + raise Exception( + "Cannot call 'check_local_user_in_room' on " + "non-local user %s" % (user_id,), + ) + + ( + membership, + member_event_id, + ) = await self.get_local_current_membership_for_user_in_room( + user_id=user_id, + room_id=room_id, + ) + + return membership == Membership.JOIN + async def get_local_current_membership_for_user_in_room( self, user_id: str, room_id: str ) -> Tuple[Optional[str], Optional[str]]: diff --git a/tests/rest/client/test_relations.py b/tests/rest/client/test_relations.py index d589f0731..651f4f415 100644 --- a/tests/rest/client/test_relations.py +++ b/tests/rest/client/test_relations.py @@ -999,7 +999,7 @@ class BundledAggregationsTestCase(BaseRelationsTestCase): bundled_aggregations, ) - self._test_bundled_aggregations(RelationTypes.ANNOTATION, assert_annotations, 6) + self._test_bundled_aggregations(RelationTypes.ANNOTATION, assert_annotations, 7) def test_annotation_to_annotation(self) -> None: """Any relation to an annotation should be ignored.""" @@ -1035,7 +1035,7 @@ class BundledAggregationsTestCase(BaseRelationsTestCase): bundled_aggregations, ) - self._test_bundled_aggregations(RelationTypes.REFERENCE, assert_annotations, 6) + self._test_bundled_aggregations(RelationTypes.REFERENCE, assert_annotations, 7) def test_thread(self) -> None: """ @@ -1080,21 +1080,21 @@ class BundledAggregationsTestCase(BaseRelationsTestCase): # The "user" sent the root event and is making queries for the bundled # aggregations: they have participated. - self._test_bundled_aggregations(RelationTypes.THREAD, _gen_assert(True), 8) + self._test_bundled_aggregations(RelationTypes.THREAD, _gen_assert(True), 9) # The "user2" sent replies in the thread and is making queries for the # bundled aggregations: they have participated. # # Note that this re-uses some cached values, so the total number of # queries is much smaller. self._test_bundled_aggregations( - RelationTypes.THREAD, _gen_assert(True), 2, access_token=self.user2_token + RelationTypes.THREAD, _gen_assert(True), 3, access_token=self.user2_token ) # A user with no interactions with the thread: they have not participated. user3_id, user3_token = self._create_user("charlie") self.helper.join(self.room, user=user3_id, tok=user3_token) self._test_bundled_aggregations( - RelationTypes.THREAD, _gen_assert(False), 2, access_token=user3_token + RelationTypes.THREAD, _gen_assert(False), 3, access_token=user3_token ) def test_thread_with_bundled_aggregations_for_latest(self) -> None: @@ -1142,7 +1142,7 @@ class BundledAggregationsTestCase(BaseRelationsTestCase): bundled_aggregations["latest_event"].get("unsigned"), ) - self._test_bundled_aggregations(RelationTypes.THREAD, assert_thread, 8) + self._test_bundled_aggregations(RelationTypes.THREAD, assert_thread, 9) def test_nested_thread(self) -> None: """