diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/handlers/sliding_sync.py | 151 |
1 files changed, 96 insertions, 55 deletions
diff --git a/synapse/handlers/sliding_sync.py b/synapse/handlers/sliding_sync.py index 8e2f751c02..bb81ca9d97 100644 --- a/synapse/handlers/sliding_sync.py +++ b/synapse/handlers/sliding_sync.py @@ -18,6 +18,7 @@ # # import logging +from itertools import chain from typing import TYPE_CHECKING, Any, Dict, Final, List, Optional, Set, Tuple import attr @@ -464,6 +465,7 @@ class SlidingSyncHandler: membership_state_keys = room_sync_config.required_state_map.get( EventTypes.Member ) + # Also see `StateFilter.must_await_full_state(...)` for comparison lazy_loading = ( membership_state_keys is not None and len(membership_state_keys) == 1 @@ -1202,7 +1204,7 @@ class SlidingSyncHandler: # Figure out any stripped state events for invite/knocks. This allows the # potential joiner to identify the room. - stripped_state: List[JsonDict] = [] + stripped_state: Optional[List[JsonDict]] = None if room_membership_for_user_at_to_token.membership in ( Membership.INVITE, Membership.KNOCK, @@ -1239,7 +1241,7 @@ class SlidingSyncHandler: # updates. initial = True - # Fetch the required state for the room + # Fetch the `required_state` for the room # # No `required_state` for invite/knock rooms (just `stripped_state`) # @@ -1247,13 +1249,15 @@ class SlidingSyncHandler: # of membership. Currently, we have to make this optional because # `invite`/`knock` rooms only have `stripped_state`. See # https://github.com/matrix-org/matrix-spec-proposals/pull/3575#discussion_r1653045932 + # + # Calculate the `StateFilter` based on the `required_state` for the room room_state: Optional[StateMap[EventBase]] = None + required_room_state: Optional[StateMap[EventBase]] = None if room_membership_for_user_at_to_token.membership not in ( Membership.INVITE, Membership.KNOCK, ): - # Calculate the `StateFilter` based on the `required_state` for the room - state_filter: Optional[StateFilter] = StateFilter.none() + required_state_filter = StateFilter.none() # If we have a double wildcard ("*", "*") in the `required_state`, we need # to fetch all state for the room # @@ -1276,7 +1280,7 @@ class SlidingSyncHandler: if StateValues.WILDCARD in room_sync_config.required_state_map.get( StateValues.WILDCARD, set() ): - state_filter = StateFilter.all() + required_state_filter = StateFilter.all() # TODO: `StateFilter` currently doesn't support wildcard event types. We're # currently working around this by returning all state to the client but it # would be nice to fetch less from the database and return just what the @@ -1285,7 +1289,7 @@ class SlidingSyncHandler: room_sync_config.required_state_map.get(StateValues.WILDCARD) is not None ): - state_filter = StateFilter.all() + required_state_filter = StateFilter.all() else: required_state_types: List[Tuple[str, Optional[str]]] = [] for ( @@ -1317,51 +1321,88 @@ class SlidingSyncHandler: else: required_state_types.append((state_type, state_key)) - state_filter = StateFilter.from_types(required_state_types) - - # We can skip fetching state if we don't need any - if state_filter != StateFilter.none(): - # We can return all of the state that was requested if we're doing an - # initial sync - if initial: - # People shouldn't see past their leave/ban event - if room_membership_for_user_at_to_token.membership in ( - Membership.LEAVE, - Membership.BAN, - ): - room_state = await self.storage_controllers.state.get_state_at( - room_id, - stream_position=to_token.copy_and_replace( - StreamKeyType.ROOM, - room_membership_for_user_at_to_token.event_pos.to_room_stream_token(), - ), - state_filter=state_filter, - # Partially-stated rooms should have all state events except for - # the membership events and since we've already excluded - # partially-stated rooms unless `required_state` only has - # `["m.room.member", "$LAZY"]` for membership, we should be able - # to retrieve everything requested. Plus we don't want to block - # the whole sync waiting for this one room. - await_full_state=False, - ) - # Otherwise, we can get the latest current state in the room - else: - room_state = await self.storage_controllers.state.get_current_state( - room_id, - state_filter, - # Partially-stated rooms should have all state events except for - # the membership events and since we've already excluded - # partially-stated rooms unless `required_state` only has - # `["m.room.member", "$LAZY"]` for membership, we should be able - # to retrieve everything requested. Plus we don't want to block - # the whole sync waiting for this one room. - await_full_state=False, - ) - # TODO: Query `current_state_delta_stream` and reverse/rewind back to the `to_token` + required_state_filter = StateFilter.from_types(required_state_types) + + # We need this base set of info for the response so let's just fetch it along + # with the `required_state` for the room + META_ROOM_STATE = [(EventTypes.Name, ""), (EventTypes.RoomAvatar, "")] + state_filter = StateFilter( + types=StateFilter.from_types( + chain(META_ROOM_STATE, required_state_filter.to_types()) + ).types, + include_others=required_state_filter.include_others, + ) + + # We can return all of the state that was requested if this was the first + # time we've sent the room down this connection. + if initial: + # People shouldn't see past their leave/ban event + if room_membership_for_user_at_to_token.membership in ( + Membership.LEAVE, + Membership.BAN, + ): + room_state = await self.storage_controllers.state.get_state_at( + room_id, + stream_position=to_token.copy_and_replace( + StreamKeyType.ROOM, + room_membership_for_user_at_to_token.event_pos.to_room_stream_token(), + ), + state_filter=state_filter, + # Partially-stated rooms should have all state events except for + # remote membership events. Since we've already excluded + # partially-stated rooms unless `required_state` only has + # `["m.room.member", "$LAZY"]` for membership, we should be able to + # retrieve everything requested. When we're lazy-loading, if there + # are some remote senders in the timeline, we should also have their + # membership event because we had to auth that timeline event. Plus + # we don't want to block the whole sync waiting for this one room. + await_full_state=False, + ) + # Otherwise, we can get the latest current state in the room else: - # TODO: Once we can figure out if we've sent a room down this connection before, - # we can return updates instead of the full required state. - raise NotImplementedError() + room_state = await self.storage_controllers.state.get_current_state( + room_id, + state_filter, + # Partially-stated rooms should have all state events except for + # remote membership events. Since we've already excluded + # partially-stated rooms unless `required_state` only has + # `["m.room.member", "$LAZY"]` for membership, we should be able to + # retrieve everything requested. When we're lazy-loading, if there + # are some remote senders in the timeline, we should also have their + # membership event because we had to auth that timeline event. Plus + # we don't want to block the whole sync waiting for this one room. + await_full_state=False, + ) + # TODO: Query `current_state_delta_stream` and reverse/rewind back to the `to_token` + else: + # TODO: Once we can figure out if we've sent a room down this connection before, + # we can return updates instead of the full required state. + raise NotImplementedError() + + if required_state_filter != StateFilter.none(): + required_room_state = required_state_filter.filter_state(room_state) + + # Find the room name and avatar from the state + room_name: Optional[str] = None + room_avatar: Optional[str] = None + if room_state is not None: + name_event = room_state.get((EventTypes.Name, "")) + if name_event is not None: + room_name = name_event.content.get("name") + + avatar_event = room_state.get((EventTypes.RoomAvatar, "")) + if avatar_event is not None: + room_avatar = avatar_event.content.get("url") + elif stripped_state is not None: + for event in stripped_state: + if event["type"] == EventTypes.Name: + room_name = event.get("content", {}).get("name") + elif event["type"] == EventTypes.RoomAvatar: + room_avatar = event.get("content", {}).get("url") + + # Found everything so we can stop looking + if room_name is not None and room_avatar is not None: + break # Figure out the last bump event in the room last_bump_event_result = ( @@ -1378,16 +1419,16 @@ class SlidingSyncHandler: bump_stamp = bump_event_pos.stream return SlidingSyncResult.RoomResult( - # TODO: Dummy value - name=None, - # TODO: Dummy value - avatar=None, + name=room_name, + avatar=room_avatar, # TODO: Dummy value heroes=None, # TODO: Dummy value is_dm=False, initial=initial, - required_state=list(room_state.values()) if room_state else None, + required_state=( + list(required_room_state.values()) if required_room_state else None + ), timeline_events=timeline_events, bundled_aggregations=bundled_aggregations, stripped_state=stripped_state, |