From d04e2ff3a43cca3f7d393a4770f022c7bf1a372c Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Mon, 24 Oct 2016 13:35:51 +0100 Subject: Fix incredubly slow back pagination query If a client didn't specify a from token when paginating backwards synapse would attempt to query the (global) maximum topological token. This a) doesn't make much sense since they're room specific and b) there are no indices that lets postgres do this efficiently. --- synapse/handlers/message.py | 4 ++-- synapse/handlers/room.py | 7 +++++-- 2 files changed, 7 insertions(+), 4 deletions(-) (limited to 'synapse/handlers') diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 59eb26beaf..abfa8c65a4 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -82,8 +82,8 @@ class MessageHandler(BaseHandler): room_token = pagin_config.from_token.room_key else: pagin_config.from_token = ( - yield self.hs.get_event_sources().get_current_token( - direction='b' + yield self.hs.get_event_sources().get_current_token_for_room( + room_id=room_id ) ) room_token = pagin_config.from_token.room_key diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index a7f533f7be..59e4d1cd15 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -475,8 +475,11 @@ class RoomEventSource(object): defer.returnValue((events, end_key)) - def get_current_key(self, direction='f'): - return self.store.get_room_events_max_id(direction) + def get_current_key(self): + return self.store.get_room_events_max_id() + + def get_current_key_for_room(self, room_id): + return self.store.get_room_events_max_id(room_id) @defer.inlineCallbacks def get_pagination_rows(self, user, config, key): -- cgit 1.4.1