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Merge pull request #1876 from matrix-org/erikj/shared_member_store
Make presence.get_new_events a bit faster
This commit is contained in:
commit
a8331897aa
6 changed files with 42 additions and 29 deletions
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@ -1011,7 +1011,7 @@ class PresenceEventSource(object):
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@defer.inlineCallbacks
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@log_function
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def get_new_events(self, user, from_key, room_ids=None, include_offline=True,
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**kwargs):
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explicit_room_id=None, **kwargs):
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# The process for getting presence events are:
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# 1. Get the rooms the user is in.
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# 2. Get the list of user in the rooms.
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@ -1028,22 +1028,24 @@ class PresenceEventSource(object):
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user_id = user.to_string()
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if from_key is not None:
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from_key = int(from_key)
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room_ids = room_ids or []
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presence = self.get_presence_handler()
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stream_change_cache = self.store.presence_stream_cache
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if not room_ids:
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rooms = yield self.store.get_rooms_for_user(user_id)
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room_ids = set(e.room_id for e in rooms)
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else:
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room_ids = set(room_ids)
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max_token = self.store.get_current_presence_token()
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plist = yield self.store.get_presence_list_accepted(user.localpart)
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friends = set(row["observed_user_id"] for row in plist)
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friends.add(user_id) # So that we receive our own presence
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users_interested_in = set(row["observed_user_id"] for row in plist)
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users_interested_in.add(user_id) # So that we receive our own presence
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users_who_share_room = yield self.store.get_users_who_share_room_with_user(
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user_id
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)
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users_interested_in.update(users_who_share_room)
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if explicit_room_id:
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user_ids = yield self.store.get_users_in_room(explicit_room_id)
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users_interested_in.update(user_ids)
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user_ids_changed = set()
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changed = None
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@ -1055,35 +1057,19 @@ class PresenceEventSource(object):
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# work out if we share a room or they're in our presence list
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get_updates_counter.inc("stream")
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for other_user_id in changed:
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if other_user_id in friends:
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if other_user_id in users_interested_in:
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user_ids_changed.add(other_user_id)
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continue
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other_rooms = yield self.store.get_rooms_for_user(other_user_id)
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if room_ids.intersection(e.room_id for e in other_rooms):
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user_ids_changed.add(other_user_id)
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continue
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else:
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# Too many possible updates. Find all users we can see and check
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# if any of them have changed.
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get_updates_counter.inc("full")
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user_ids_to_check = set()
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for room_id in room_ids:
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users = yield self.store.get_users_in_room(room_id)
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user_ids_to_check.update(users)
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user_ids_to_check.update(friends)
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# Always include yourself. Only really matters for when the user is
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# not in any rooms, but still.
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user_ids_to_check.add(user_id)
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if from_key:
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user_ids_changed = stream_change_cache.get_entities_changed(
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user_ids_to_check, from_key,
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users_interested_in, from_key,
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)
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else:
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user_ids_changed = user_ids_to_check
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user_ids_changed = users_interested_in
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updates = yield presence.current_state_for_users(user_ids_changed)
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@ -437,6 +437,7 @@ class RoomEventSource(object):
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limit,
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room_ids,
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is_guest,
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explicit_room_id=None,
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):
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# We just ignore the key for now.
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@ -378,6 +378,7 @@ class Notifier(object):
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limit=limit,
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is_guest=is_peeking,
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room_ids=room_ids,
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explicit_room_id=explicit_room_id,
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)
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if name == "room":
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@ -73,6 +73,9 @@ class SlavedEventStore(BaseSlavedStore):
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# to reach inside the __dict__ to extract them.
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get_rooms_for_user = RoomMemberStore.__dict__["get_rooms_for_user"]
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get_users_in_room = RoomMemberStore.__dict__["get_users_in_room"]
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get_users_who_share_room_with_user = (
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RoomMemberStore.__dict__["get_users_who_share_room_with_user"]
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)
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get_latest_event_ids_in_room = EventFederationStore.__dict__[
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"get_latest_event_ids_in_room"
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]
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@ -280,6 +280,23 @@ class RoomMemberStore(SQLBaseStore):
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user_id, membership_list=[Membership.JOIN],
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)
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@cachedInlineCallbacks(max_entries=50000, cache_context=True, iterable=True)
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def get_users_who_share_room_with_user(self, user_id, cache_context):
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"""Returns the set of users who share a room with `user_id`
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"""
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rooms = yield self.get_rooms_for_user(
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user_id, on_invalidate=cache_context.invalidate,
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)
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user_who_share_room = set()
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for room in rooms:
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user_ids = yield self.get_users_in_room(
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room.room_id, on_invalidate=cache_context.invalidate,
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)
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user_who_share_room.update(user_ids)
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defer.returnValue(user_who_share_room)
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def forget(self, user_id, room_id):
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"""Indicate that user_id wishes to discard history for room_id."""
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def f(txn):
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@ -478,6 +478,11 @@ class CacheListDescriptor(object):
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class _CacheContext(namedtuple("_CacheContext", ("cache", "key"))):
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# We rely on _CacheContext implementing __eq__ and __hash__ sensibly,
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# which namedtuple does for us (i.e. two _CacheContext are the same if
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# their caches and keys match). This is important in particular to
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# dedupe when we add callbacks to lru cache nodes, otherwise the number
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# of callbacks would grow.
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def invalidate(self):
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self.cache.invalidate(self.key)
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