Implement device key caching over federation

1 files changed, 10 insertions, 0 deletions

diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index c9175bb33d..b5bcfd705a 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -127,6 +127,16 @@ class FederationClient(FederationBase):
         )
 
     @log_function
+    def query_user_devices(self, destination, user_id, timeout=30000):
+        """Query the device keys for a list of user ids hosted on a remote
+        server.
+        """
+        sent_queries_counter.inc("user_devices")
+        return self.transport_layer.query_user_devices(
+            destination, user_id, timeout
+        )
+
+    @log_function
     def claim_client_keys(self, destination, content, timeout):
         """Claims one-time keys for a device hosted on a remote server.