Reduce state pulled from DB due to sending typing and receipts over federation (#12964)

Reducing the amount of state we pull from the DB is useful as fetching state is expensive in terms of DB, CPU and memory.

1 files changed, 5 insertions, 1 deletions

diff --git a/synapse/federation/sender/__init__.py b/synapse/federation/sender/__init__.py
index dbe303ed9b..99a794c042 100644
--- a/synapse/federation/sender/__init__.py
+++ b/synapse/federation/sender/__init__.py
@@ -245,6 +245,8 @@ class FederationSender(AbstractFederationSender):
         self.store = hs.get_datastores().main
         self.state = hs.get_state_handler()
 
+        self._storage_controllers = hs.get_storage_controllers()
+
         self.clock = hs.get_clock()
         self.is_mine_id = hs.is_mine_id
 
@@ -602,7 +604,9 @@ class FederationSender(AbstractFederationSender):
         room_id = receipt.room_id
 
         # Work out which remote servers should be poked and poke them.
-        domains_set = await self.state.get_current_hosts_in_room(room_id)
+        domains_set = await self._storage_controllers.state.get_current_hosts_in_room(
+            room_id
+        )
         domains = [
             d
             for d in domains_set