diff --git a/synapse/config/user_directory.py b/synapse/config/user_directory.py
index 38e8947843..9b0ae91289 100644
--- a/synapse/config/user_directory.py
+++ b/synapse/config/user_directory.py
@@ -23,11 +23,15 @@ class UserDirectoryConfig(Config):
def read_config(self, config):
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_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 default_config(self, config_dir_path, server_name, **kwargs):
return """
@@ -41,4 +45,9 @@ class UserDirectoryConfig(Config):
#
#user_directory:
# 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: id.example.com
"""
diff --git a/synapse/rest/client/v2_alpha/user_directory.py b/synapse/rest/client/v2_alpha/user_directory.py
index 2d4a43c353..9b1a019978 100644
--- a/synapse/rest/client/v2_alpha/user_directory.py
+++ b/synapse/rest/client/v2_alpha/user_directory.py
@@ -16,6 +16,7 @@
import logging
from twisted.internet import defer
+from signedjson.sign import sign_json
from synapse.api.errors import SynapseError
from synapse.http.servlet import RestServlet, parse_json_object_from_request
@@ -36,6 +37,7 @@ class UserDirectorySearchRestServlet(RestServlet):
self.hs = hs
self.auth = hs.get_auth()
self.user_directory_handler = hs.get_user_directory_handler()
+ self.http_client = hs.get_simple_http_client()
@defer.inlineCallbacks
def on_POST(self, request):
@@ -60,6 +62,14 @@ class UserDirectorySearchRestServlet(RestServlet):
body = parse_json_object_from_request(request)
+ if self.hs.config.user_directory_defer_to_id_server:
+ signed_body = sign_json(body, self.hs.hostname, self.hs.config.signing_key[0])
+ url = "http://%s/_matrix/identity/api/v1/user_directory/search" % (
+ self.hs.config.user_directory_defer_to_id_server,
+ )
+ resp = yield self.http_client.post_json_get_json(url, signed_body)
+ defer.returnValue((200, resp))
+
limit = body.get("limit", 10)
limit = min(limit, 50)
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