1 files changed, 18 insertions, 8 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 1980e37dae..bd7baef051 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -463,6 +463,7 @@ class EventCreationHandler:
         )
         self._events_shard_config = self.config.worker.events_shard_config
         self._instance_name = hs.get_instance_name()
+        self._notifier = hs.get_notifier()
 
         self.room_prejoin_state_types = self.hs.config.api.room_prejoin_state
 
@@ -1444,7 +1445,12 @@ class EventCreationHandler:
             if state_entry.state_group in self._external_cache_joined_hosts_updates:
                 return
 
-            joined_hosts = await self.store.get_joined_hosts(event.room_id, state_entry)
+            state = await state_entry.get_state(
+                self._storage_controllers.state, StateFilter.all()
+            )
+            joined_hosts = await self.store.get_joined_hosts(
+                event.room_id, state, state_entry
+            )
 
             # Note that the expiry times must be larger than the expiry time in
             # _external_cache_joined_hosts_updates.
@@ -1545,6 +1551,16 @@ class EventCreationHandler:
                 requester, is_admin_redaction=is_admin_redaction
             )
 
+        if event.type == EventTypes.Member and event.membership == Membership.JOIN:
+            (
+                current_membership,
+                _,
+            ) = await self.store.get_local_current_membership_for_user_in_room(
+                event.state_key, event.room_id
+            )
+            if current_membership != Membership.JOIN:
+                self._notifier.notify_user_joined_room(event.event_id, event.room_id)
+
         await self._maybe_kick_guest_users(event, context)
 
         if event.type == EventTypes.CanonicalAlias:
@@ -1844,13 +1860,8 @@ class EventCreationHandler:
 
         # For each room we need to find a joined member we can use to send
         # the dummy event with.
-        latest_event_ids = await self.store.get_prev_events_for_room(room_id)
-        members = await self.state.get_current_users_in_room(
-            room_id, latest_event_ids=latest_event_ids
-        )
+        members = await self.store.get_local_users_in_room(room_id)
         for user_id in members:
-            if not self.hs.is_mine_id(user_id):
-                continue
             requester = create_requester(user_id, authenticated_entity=self.server_name)
             try:
                 event, context = await self.create_event(
@@ -1861,7 +1872,6 @@ class EventCreationHandler:
                         "room_id": room_id,
                         "sender": user_id,
                     },
-                    prev_event_ids=latest_event_ids,
                 )
 
                 event.internal_metadata.proactively_send = False