Merge commit 'de119063f' into anoa/dinsic_release_1_18_x

* commit 'de119063f': (31 commits)
  Convert room list handler to async/await. (#7912)
  Element CSS and logo in email templates (#7919)
  Lint the contrib/ directory in CI and linting scripts, add synctl to linting script (#7914)
  Remove unused code from synapse.logging.utils. (#7897)
  Fix a typo in the sample config. (#7890)
  Fix deprecation warning: import ABC from collections.abc (#7892)
  Change sample config's postgres user to synapse_user (#7889)
  Fix deprecation warning due to invalid escape sequences (#7895)
  Remove Ubuntu Eoan that is now EOL (#7888)
  Fix the trace function for async functions. (#7872)
  Add help for creating a user via docker (#7885)
  Switch to Debian:Slim from Alpine for the docker image (#7839)
  Stop using 'device_max_stream_id' (#7882)
  Fix TypeError in synapse.notifier (#7880)
  Add a default limit (of 100) to get/sync operations. (#7858)
  Change "unknown room ver" logging to warning. (#7881)
  Convert device handler to async/await (#7871)
  Convert synapse.app to async/await. (#7868)
  Convert _base, profile, and _receipts handlers to async/await (#7860)
  Add admin endpoint to get members in a room. (#7842)
  ...

1 files changed, 9 insertions, 0 deletions

diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py

index c5a84af047..1a3398316d 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -818,9 +818,18 @@ class RoomTypingRestServlet(RestServlet):
         self.typing_handler = hs.get_typing_handler()
         self.auth = hs.get_auth()
 
+        # If we're not on the typing writer instance we should scream if we get
+        # requests.
+        self._is_typing_writer = (
+            hs.config.worker.writers.typing == hs.get_instance_name()
+        )
+
     async def on_PUT(self, request, room_id, user_id):
         requester = await self.auth.get_user_by_req(request)
 
+        if not self._is_typing_writer:
+            raise Exception("Got /typing request on instance that is not typing writer")
+
         room_id = urlparse.unquote(room_id)
         target_user = UserID.from_string(urlparse.unquote(user_id))