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authorErik Johnston <erikj@jki.re>2017-03-24 13:07:22 +0000
committerGitHub <noreply@github.com>2017-03-24 13:07:22 +0000
commit23e0ff840af810417cbd8855b92ab0794c25eaf8 (patch)
treeb2b2bc5a3adec8dadd2f2730532868912e064ef4
parentMerge pull request #2058 from matrix-org/rav/logcontext_leaks_2 (diff)
parentCache hosts in room (diff)
downloadsynapse-23e0ff840af810417cbd8855b92ab0794c25eaf8.tar.xz
Merge pull request #2060 from matrix-org/erikj/cache_hosts_in_room
Cache hosts in room
-rw-r--r--synapse/handlers/presence.py3
-rw-r--r--synapse/storage/roommember.py10
2 files changed, 11 insertions, 2 deletions
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index 059260a8aa..1ede117c79 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -575,8 +575,7 @@ class PresenceHandler(object):
                 if not local_states:
                     continue
 
-                users = yield self.store.get_users_in_room(room_id)
-                hosts = set(get_domain_from_id(u) for u in users)
+                hosts = yield self.store.get_hosts_in_room(room_id)
 
                 for host in hosts:
                     hosts_to_states.setdefault(host, []).extend(local_states)
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index 23127d3a95..367dbbbcf6 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -129,6 +129,16 @@ class RoomMemberStore(SQLBaseStore):
         with self._stream_id_gen.get_next() as stream_ordering:
             yield self.runInteraction("locally_reject_invite", f, stream_ordering)
 
+    @cachedInlineCallbacks(max_entries=100000, iterable=True, cache_context=True)
+    def get_hosts_in_room(self, room_id, cache_context):
+        """Returns the set of all hosts currently in the room
+        """
+        user_ids = yield self.get_users_in_room(
+            room_id, on_invalidate=cache_context.invalidate,
+        )
+        hosts = frozenset(get_domain_from_id(user_id) for user_id in user_ids)
+        defer.returnValue(hosts)
+
     @cached(max_entries=500000, iterable=True)
     def get_users_in_room(self, room_id):
         def f(txn):