1 files changed, 9 insertions, 0 deletions
diff --git a/synapse/config/user_directory.py b/synapse/config/user_directory.py
index c8d19c5d6b..43b6c40456 100644
--- a/synapse/config/user_directory.py
+++ b/synapse/config/user_directory.py
@@ -26,6 +26,7 @@ class UserDirectoryConfig(Config):
     def read_config(self, config, **kwargs):
         self.user_directory_search_enabled = True
         self.user_directory_search_all_users = False
+        self.user_directory_defer_to_id_server = None
         user_directory_config = config.get("user_directory", None)
         if user_directory_config:
             self.user_directory_search_enabled = user_directory_config.get(
@@ -34,6 +35,9 @@ class UserDirectoryConfig(Config):
             self.user_directory_search_all_users = user_directory_config.get(
                 "search_all_users", False
             )
+            self.user_directory_defer_to_id_server = user_directory_config.get(
+                "defer_to_id_server", None
+            )
 
     def generate_config_section(self, config_dir_path, server_name, **kwargs):
         return """
@@ -52,4 +56,9 @@ class UserDirectoryConfig(Config):
         #user_directory:
         #  enabled: true
         #  search_all_users: false
+        #
+        #  # If this is set, user search will be delegated to this ID server instead
+        #  # of synapse performing the search itself.
+        #  # This is an experimental API.
+        #  defer_to_id_server: https://id.example.com
         """