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-rw-r--r--synapse/rest/admin/__init__.py33
-rw-r--r--synapse/rest/admin/media.py7
-rw-r--r--synapse/rest/admin/purge_room_servlet.py2
-rw-r--r--synapse/rest/admin/server_notice_servlet.py2
-rw-r--r--synapse/rest/admin/users.py4
-rw-r--r--synapse/rest/client/v1/directory.py16
-rw-r--r--synapse/rest/client/v1/events.py8
-rw-r--r--synapse/rest/client/v1/initial_sync.py2
-rw-r--r--synapse/rest/client/v1/login.py6
-rw-r--r--synapse/rest/client/v1/logout.py8
-rw-r--r--synapse/rest/client/v1/presence.py6
-rw-r--r--synapse/rest/client/v1/profile.py18
-rw-r--r--synapse/rest/client/v1/push_rule.py10
-rw-r--r--synapse/rest/client/v1/pusher.py6
-rw-r--r--synapse/rest/client/v1/room.py49
-rw-r--r--synapse/rest/client/v1/voip.py4
-rw-r--r--synapse/rest/client/v2_alpha/account.py24
-rw-r--r--synapse/rest/client/v2_alpha/account_data.py8
-rw-r--r--synapse/rest/client/v2_alpha/capabilities.py2
-rw-r--r--synapse/rest/client/v2_alpha/devices.py10
-rw-r--r--synapse/rest/client/v2_alpha/filter.py4
-rw-r--r--synapse/rest/client/v2_alpha/groups.py64
-rw-r--r--synapse/rest/client/v2_alpha/keys.py56
-rw-r--r--synapse/rest/client/v2_alpha/notifications.py2
-rw-r--r--synapse/rest/client/v2_alpha/read_marker.py2
-rw-r--r--synapse/rest/client/v2_alpha/receipts.py2
-rw-r--r--synapse/rest/client/v2_alpha/register.py14
-rw-r--r--synapse/rest/client/v2_alpha/relations.py8
-rw-r--r--synapse/rest/client/v2_alpha/report_event.py2
-rw-r--r--synapse/rest/client/v2_alpha/room_keys.py14
-rw-r--r--synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py2
-rw-r--r--synapse/rest/client/v2_alpha/sendtodevice.py4
-rw-r--r--synapse/rest/client/v2_alpha/sync.py2
-rw-r--r--synapse/rest/client/v2_alpha/tags.py6
-rw-r--r--synapse/rest/client/v2_alpha/thirdparty.py10
-rw-r--r--synapse/rest/client/v2_alpha/user_directory.py4
-rw-r--r--synapse/rest/media/v1/media_repository.py6
-rw-r--r--synapse/rest/media/v1/preview_url_resource.py1
-rw-r--r--synapse/rest/media/v1/thumbnailer.py4
39 files changed, 237 insertions, 195 deletions
diff --git a/synapse/rest/admin/__init__.py b/synapse/rest/admin/__init__.py
index fa91cc8dee..81b6bd8816 100644
--- a/synapse/rest/admin/__init__.py
+++ b/synapse/rest/admin/__init__.py
@@ -41,7 +41,7 @@ from synapse.rest.admin._base import (
     assert_user_is_admin,
     historical_admin_path_patterns,
 )
-from synapse.rest.admin.media import register_servlets_for_media_repo
+from synapse.rest.admin.media import ListMediaInRoom, register_servlets_for_media_repo
 from synapse.rest.admin.purge_room_servlet import PurgeRoomServlet
 from synapse.rest.admin.server_notice_servlet import SendServerNoticeServlet
 from synapse.rest.admin.users import UserAdminServlet
@@ -69,7 +69,7 @@ class UsersRestServlet(RestServlet):
 
         ret = yield self.handlers.admin_handler.get_users()
 
-        return (200, ret)
+        return 200, ret
 
 
 class VersionServlet(RestServlet):
@@ -120,7 +120,7 @@ class UserRegisterServlet(RestServlet):
 
         nonce = self.hs.get_secrets().token_hex(64)
         self.nonces[nonce] = int(self.reactor.seconds())
-        return (200, {"nonce": nonce})
+        return 200, {"nonce": nonce}
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -212,7 +212,7 @@ class UserRegisterServlet(RestServlet):
         )
 
         result = yield register._create_registration_details(user_id, body)
-        return (200, result)
+        return 200, result
 
 
 class WhoisRestServlet(RestServlet):
@@ -237,7 +237,7 @@ class WhoisRestServlet(RestServlet):
 
         ret = yield self.handlers.admin_handler.get_whois(target_user)
 
-        return (200, ret)
+        return 200, ret
 
 
 class PurgeHistoryRestServlet(RestServlet):
@@ -322,7 +322,7 @@ class PurgeHistoryRestServlet(RestServlet):
             room_id, token, delete_local_events=delete_local_events
         )
 
-        return (200, {"purge_id": purge_id})
+        return 200, {"purge_id": purge_id}
 
 
 class PurgeHistoryStatusRestServlet(RestServlet):
@@ -347,7 +347,7 @@ class PurgeHistoryStatusRestServlet(RestServlet):
         if purge_status is None:
             raise NotFoundError("purge id '%s' not found" % purge_id)
 
-        return (200, purge_status.asdict())
+        return 200, purge_status.asdict()
 
 
 class DeactivateAccountRestServlet(RestServlet):
@@ -379,7 +379,7 @@ class DeactivateAccountRestServlet(RestServlet):
         else:
             id_server_unbind_result = "no-support"
 
-        return (200, {"id_server_unbind_result": id_server_unbind_result})
+        return 200, {"id_server_unbind_result": id_server_unbind_result}
 
 
 class ShutdownRoomRestServlet(RestServlet):
@@ -549,7 +549,7 @@ class ResetPasswordRestServlet(RestServlet):
         yield self._set_password_handler.set_password(
             target_user_id, new_password, requester
         )
-        return (200, {})
+        return 200, {}
 
 
 class GetUsersPaginatedRestServlet(RestServlet):
@@ -591,7 +591,7 @@ class GetUsersPaginatedRestServlet(RestServlet):
         logger.info("limit: %s, start: %s", limit, start)
 
         ret = yield self.handlers.admin_handler.get_users_paginate(order, start, limit)
-        return (200, ret)
+        return 200, ret
 
     @defer.inlineCallbacks
     def on_POST(self, request, target_user_id):
@@ -619,7 +619,7 @@ class GetUsersPaginatedRestServlet(RestServlet):
         logger.info("limit: %s, start: %s", limit, start)
 
         ret = yield self.handlers.admin_handler.get_users_paginate(order, start, limit)
-        return (200, ret)
+        return 200, ret
 
 
 class SearchUsersRestServlet(RestServlet):
@@ -662,7 +662,7 @@ class SearchUsersRestServlet(RestServlet):
         logger.info("term: %s ", term)
 
         ret = yield self.handlers.admin_handler.search_users(term)
-        return (200, ret)
+        return 200, ret
 
 
 class DeleteGroupAdminRestServlet(RestServlet):
@@ -685,7 +685,7 @@ class DeleteGroupAdminRestServlet(RestServlet):
             raise SynapseError(400, "Can only delete local groups")
 
         yield self.group_server.delete_group(group_id, requester.user.to_string())
-        return (200, {})
+        return 200, {}
 
 
 class AccountValidityRenewServlet(RestServlet):
@@ -716,7 +716,7 @@ class AccountValidityRenewServlet(RestServlet):
         )
 
         res = {"expiration_ts": expiration_ts}
-        return (200, res)
+        return 200, res
 
 
 ########################################################################################
@@ -761,9 +761,12 @@ def register_servlets_for_client_rest_resource(hs, http_server):
     DeleteGroupAdminRestServlet(hs).register(http_server)
     AccountValidityRenewServlet(hs).register(http_server)
 
-    # Load the media repo ones if we're using them.
+    # Load the media repo ones if we're using them. Otherwise load the servlets which
+    # don't need a media repo (typically readonly admin APIs).
     if hs.config.can_load_media_repo:
         register_servlets_for_media_repo(hs, http_server)
+    else:
+        ListMediaInRoom(hs).register(http_server)
 
     # don't add more things here: new servlets should only be exposed on
     # /_synapse/admin so should not go here. Instead register them in AdminRestResource.
diff --git a/synapse/rest/admin/media.py b/synapse/rest/admin/media.py
index 824df919f2..ed7086d09c 100644
--- a/synapse/rest/admin/media.py
+++ b/synapse/rest/admin/media.py
@@ -49,7 +49,7 @@ class QuarantineMediaInRoom(RestServlet):
             room_id, requester.user.to_string()
         )
 
-        return (200, {"num_quarantined": num_quarantined})
+        return 200, {"num_quarantined": num_quarantined}
 
 
 class ListMediaInRoom(RestServlet):
@@ -60,6 +60,7 @@ class ListMediaInRoom(RestServlet):
 
     def __init__(self, hs):
         self.store = hs.get_datastore()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -70,7 +71,7 @@ class ListMediaInRoom(RestServlet):
 
         local_mxcs, remote_mxcs = yield self.store.get_media_mxcs_in_room(room_id)
 
-        return (200, {"local": local_mxcs, "remote": remote_mxcs})
+        return 200, {"local": local_mxcs, "remote": remote_mxcs}
 
 
 class PurgeMediaCacheRestServlet(RestServlet):
@@ -89,7 +90,7 @@ class PurgeMediaCacheRestServlet(RestServlet):
 
         ret = yield self.media_repository.delete_old_remote_media(before_ts)
 
-        return (200, ret)
+        return 200, ret
 
 
 def register_servlets_for_media_repo(hs, http_server):
diff --git a/synapse/rest/admin/purge_room_servlet.py b/synapse/rest/admin/purge_room_servlet.py
index 2922eb543e..f474066542 100644
--- a/synapse/rest/admin/purge_room_servlet.py
+++ b/synapse/rest/admin/purge_room_servlet.py
@@ -54,4 +54,4 @@ class PurgeRoomServlet(RestServlet):
 
         await self.pagination_handler.purge_room(body["room_id"])
 
-        return (200, {})
+        return 200, {}
diff --git a/synapse/rest/admin/server_notice_servlet.py b/synapse/rest/admin/server_notice_servlet.py
index 656526fea5..ae2cbe2e0a 100644
--- a/synapse/rest/admin/server_notice_servlet.py
+++ b/synapse/rest/admin/server_notice_servlet.py
@@ -92,7 +92,7 @@ class SendServerNoticeServlet(RestServlet):
             event_content=body["content"],
         )
 
-        return (200, {"event_id": event.event_id})
+        return 200, {"event_id": event.event_id}
 
     def on_PUT(self, request, txn_id):
         return self.txns.fetch_or_execute_request(
diff --git a/synapse/rest/admin/users.py b/synapse/rest/admin/users.py
index 5364117420..9720a3bab0 100644
--- a/synapse/rest/admin/users.py
+++ b/synapse/rest/admin/users.py
@@ -71,7 +71,7 @@ class UserAdminServlet(RestServlet):
         is_admin = yield self.handlers.admin_handler.get_user_server_admin(target_user)
         is_admin = bool(is_admin)
 
-        return (200, {"admin": is_admin})
+        return 200, {"admin": is_admin}
 
     @defer.inlineCallbacks
     def on_PUT(self, request, user_id):
@@ -97,4 +97,4 @@ class UserAdminServlet(RestServlet):
             target_user, set_admin_to
         )
 
-        return (200, {})
+        return 200, {}
diff --git a/synapse/rest/client/v1/directory.py b/synapse/rest/client/v1/directory.py
index 4284738021..4ea3666874 100644
--- a/synapse/rest/client/v1/directory.py
+++ b/synapse/rest/client/v1/directory.py
@@ -54,7 +54,7 @@ class ClientDirectoryServer(RestServlet):
         dir_handler = self.handlers.directory_handler
         res = yield dir_handler.get_association(room_alias)
 
-        return (200, res)
+        return 200, res
 
     @defer.inlineCallbacks
     def on_PUT(self, request, room_alias):
@@ -87,7 +87,7 @@ class ClientDirectoryServer(RestServlet):
             requester, room_alias, room_id, servers
         )
 
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, room_alias):
@@ -102,7 +102,7 @@ class ClientDirectoryServer(RestServlet):
                 service.url,
                 room_alias.to_string(),
             )
-            return (200, {})
+            return 200, {}
         except InvalidClientCredentialsError:
             # fallback to default user behaviour if they aren't an AS
             pass
@@ -118,7 +118,7 @@ class ClientDirectoryServer(RestServlet):
             "User %s deleted alias %s", user.to_string(), room_alias.to_string()
         )
 
-        return (200, {})
+        return 200, {}
 
 
 class ClientDirectoryListServer(RestServlet):
@@ -136,7 +136,7 @@ class ClientDirectoryListServer(RestServlet):
         if room is None:
             raise NotFoundError("Unknown room")
 
-        return (200, {"visibility": "public" if room["is_public"] else "private"})
+        return 200, {"visibility": "public" if room["is_public"] else "private"}
 
     @defer.inlineCallbacks
     def on_PUT(self, request, room_id):
@@ -149,7 +149,7 @@ class ClientDirectoryListServer(RestServlet):
             requester, room_id, visibility
         )
 
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, room_id):
@@ -159,7 +159,7 @@ class ClientDirectoryListServer(RestServlet):
             requester, room_id, "private"
         )
 
-        return (200, {})
+        return 200, {}
 
 
 class ClientAppserviceDirectoryListServer(RestServlet):
@@ -193,4 +193,4 @@ class ClientAppserviceDirectoryListServer(RestServlet):
             requester.app_service.id, network_id, room_id, visibility
         )
 
-        return (200, {})
+        return 200, {}
diff --git a/synapse/rest/client/v1/events.py b/synapse/rest/client/v1/events.py
index 53ebed2203..6651b4cf07 100644
--- a/synapse/rest/client/v1/events.py
+++ b/synapse/rest/client/v1/events.py
@@ -67,10 +67,10 @@ class EventStreamRestServlet(RestServlet):
             is_guest=is_guest,
         )
 
-        return (200, chunk)
+        return 200, chunk
 
     def on_OPTIONS(self, request):
-        return (200, {})
+        return 200, {}
 
 
 # TODO: Unit test gets, with and without auth, with different kinds of events.
@@ -91,9 +91,9 @@ class EventRestServlet(RestServlet):
         time_now = self.clock.time_msec()
         if event:
             event = yield self._event_serializer.serialize_event(event, time_now)
-            return (200, event)
+            return 200, event
         else:
-            return (404, "Event not found.")
+            return 404, "Event not found."
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v1/initial_sync.py b/synapse/rest/client/v1/initial_sync.py
index 70b8478e90..2da3cd7511 100644
--- a/synapse/rest/client/v1/initial_sync.py
+++ b/synapse/rest/client/v1/initial_sync.py
@@ -42,7 +42,7 @@ class InitialSyncRestServlet(RestServlet):
             include_archived=include_archived,
         )
 
-        return (200, content)
+        return 200, content
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index 5762b9fd06..25a1b67092 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -121,10 +121,10 @@ class LoginRestServlet(RestServlet):
             ({"type": t} for t in self.auth_handler.get_supported_login_types())
         )
 
-        return (200, {"flows": flows})
+        return 200, {"flows": flows}
 
     def on_OPTIONS(self, request):
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -152,7 +152,7 @@ class LoginRestServlet(RestServlet):
         well_known_data = self._well_known_builder.get_well_known()
         if well_known_data:
             result["well_known"] = well_known_data
-        return (200, result)
+        return 200, result
 
     @defer.inlineCallbacks
     def _do_other_login(self, login_submission):
diff --git a/synapse/rest/client/v1/logout.py b/synapse/rest/client/v1/logout.py
index 2769f3a189..4785a34d75 100644
--- a/synapse/rest/client/v1/logout.py
+++ b/synapse/rest/client/v1/logout.py
@@ -33,7 +33,7 @@ class LogoutRestServlet(RestServlet):
         self._device_handler = hs.get_device_handler()
 
     def on_OPTIONS(self, request):
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -49,7 +49,7 @@ class LogoutRestServlet(RestServlet):
                 requester.user.to_string(), requester.device_id
             )
 
-        return (200, {})
+        return 200, {}
 
 
 class LogoutAllRestServlet(RestServlet):
@@ -62,7 +62,7 @@ class LogoutAllRestServlet(RestServlet):
         self._device_handler = hs.get_device_handler()
 
     def on_OPTIONS(self, request):
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -75,7 +75,7 @@ class LogoutAllRestServlet(RestServlet):
         # .. and then delete any access tokens which weren't associated with
         # devices.
         yield self._auth_handler.delete_access_tokens_for_user(user_id)
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v1/presence.py b/synapse/rest/client/v1/presence.py
index 1eb1068c98..0153525cef 100644
--- a/synapse/rest/client/v1/presence.py
+++ b/synapse/rest/client/v1/presence.py
@@ -56,7 +56,7 @@ class PresenceStatusRestServlet(RestServlet):
         state = yield self.presence_handler.get_state(target_user=user)
         state = format_user_presence_state(state, self.clock.time_msec())
 
-        return (200, state)
+        return 200, state
 
     @defer.inlineCallbacks
     def on_PUT(self, request, user_id):
@@ -88,10 +88,10 @@ class PresenceStatusRestServlet(RestServlet):
         if self.hs.config.use_presence:
             yield self.presence_handler.set_state(user, state)
 
-        return (200, {})
+        return 200, {}
 
     def on_OPTIONS(self, request):
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v1/profile.py b/synapse/rest/client/v1/profile.py
index 2657ae45bb..bbce2e2b71 100644
--- a/synapse/rest/client/v1/profile.py
+++ b/synapse/rest/client/v1/profile.py
@@ -48,7 +48,7 @@ class ProfileDisplaynameRestServlet(RestServlet):
         if displayname is not None:
             ret["displayname"] = displayname
 
-        return (200, ret)
+        return 200, ret
 
     @defer.inlineCallbacks
     def on_PUT(self, request, user_id):
@@ -61,14 +61,14 @@ class ProfileDisplaynameRestServlet(RestServlet):
         try:
             new_name = content["displayname"]
         except Exception:
-            return (400, "Unable to parse name")
+            return 400, "Unable to parse name"
 
         yield self.profile_handler.set_displayname(user, requester, new_name, is_admin)
 
-        return (200, {})
+        return 200, {}
 
     def on_OPTIONS(self, request, user_id):
-        return (200, {})
+        return 200, {}
 
 
 class ProfileAvatarURLRestServlet(RestServlet):
@@ -98,7 +98,7 @@ class ProfileAvatarURLRestServlet(RestServlet):
         if avatar_url is not None:
             ret["avatar_url"] = avatar_url
 
-        return (200, ret)
+        return 200, ret
 
     @defer.inlineCallbacks
     def on_PUT(self, request, user_id):
@@ -110,14 +110,14 @@ class ProfileAvatarURLRestServlet(RestServlet):
         try:
             new_name = content["avatar_url"]
         except Exception:
-            return (400, "Unable to parse name")
+            return 400, "Unable to parse name"
 
         yield self.profile_handler.set_avatar_url(user, requester, new_name, is_admin)
 
-        return (200, {})
+        return 200, {}
 
     def on_OPTIONS(self, request, user_id):
-        return (200, {})
+        return 200, {}
 
 
 class ProfileRestServlet(RestServlet):
@@ -150,7 +150,7 @@ class ProfileRestServlet(RestServlet):
         if avatar_url is not None:
             ret["avatar_url"] = avatar_url
 
-        return (200, ret)
+        return 200, ret
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v1/push_rule.py b/synapse/rest/client/v1/push_rule.py
index c3ae8b98a8..9f8c3d09e3 100644
--- a/synapse/rest/client/v1/push_rule.py
+++ b/synapse/rest/client/v1/push_rule.py
@@ -69,7 +69,7 @@ class PushRuleRestServlet(RestServlet):
         if "attr" in spec:
             yield self.set_rule_attr(user_id, spec, content)
             self.notify_user(user_id)
-            return (200, {})
+            return 200, {}
 
         if spec["rule_id"].startswith("."):
             # Rule ids starting with '.' are reserved for server default rules.
@@ -106,7 +106,7 @@ class PushRuleRestServlet(RestServlet):
         except RuleNotFoundException as e:
             raise SynapseError(400, str(e))
 
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, path):
@@ -123,7 +123,7 @@ class PushRuleRestServlet(RestServlet):
         try:
             yield self.store.delete_push_rule(user_id, namespaced_rule_id)
             self.notify_user(user_id)
-            return (200, {})
+            return 200, {}
         except StoreError as e:
             if e.code == 404:
                 raise NotFoundError()
@@ -151,10 +151,10 @@ class PushRuleRestServlet(RestServlet):
             )
 
         if path[0] == "":
-            return (200, rules)
+            return 200, rules
         elif path[0] == "global":
             result = _filter_ruleset_with_path(rules["global"], path[1:])
-            return (200, result)
+            return 200, result
         else:
             raise UnrecognizedRequestError()
 
diff --git a/synapse/rest/client/v1/pusher.py b/synapse/rest/client/v1/pusher.py
index ebc3dec516..41660682d9 100644
--- a/synapse/rest/client/v1/pusher.py
+++ b/synapse/rest/client/v1/pusher.py
@@ -62,7 +62,7 @@ class PushersRestServlet(RestServlet):
                 if k not in allowed_keys:
                     del p[k]
 
-        return (200, {"pushers": pushers})
+        return 200, {"pushers": pushers}
 
     def on_OPTIONS(self, _):
         return 200, {}
@@ -94,7 +94,7 @@ class PushersSetRestServlet(RestServlet):
             yield self.pusher_pool.remove_pusher(
                 content["app_id"], content["pushkey"], user_id=user.to_string()
             )
-            return (200, {})
+            return 200, {}
 
         assert_params_in_dict(
             content,
@@ -143,7 +143,7 @@ class PushersSetRestServlet(RestServlet):
 
         self.notifier.on_new_replication_data()
 
-        return (200, {})
+        return 200, {}
 
     def on_OPTIONS(self, _):
         return 200, {}
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 4b2344e696..3582259026 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -91,14 +91,14 @@ class RoomCreateRestServlet(TransactionRestServlet):
             requester, self.get_room_config(request)
         )
 
-        return (200, info)
+        return 200, info
 
     def get_room_config(self, request):
         user_supplied_config = parse_json_object_from_request(request)
         return user_supplied_config
 
     def on_OPTIONS(self, request):
-        return (200, {})
+        return 200, {}
 
 
 # TODO: Needs unit testing for generic events
@@ -173,9 +173,9 @@ class RoomStateEventRestServlet(TransactionRestServlet):
 
         if format == "event":
             event = format_event_for_client_v2(data.get_dict())
-            return (200, event)
+            return 200, event
         elif format == "content":
-            return (200, data.get_dict()["content"])
+            return 200, data.get_dict()["content"]
 
     @defer.inlineCallbacks
     def on_PUT(self, request, room_id, event_type, state_key, txn_id=None):
@@ -210,7 +210,7 @@ class RoomStateEventRestServlet(TransactionRestServlet):
         ret = {}
         if event:
             ret = {"event_id": event.event_id}
-        return (200, ret)
+        return 200, ret
 
 
 # TODO: Needs unit testing for generic events + feedback
@@ -244,10 +244,10 @@ class RoomSendEventRestServlet(TransactionRestServlet):
             requester, event_dict, txn_id=txn_id
         )
 
-        return (200, {"event_id": event.event_id})
+        return 200, {"event_id": event.event_id}
 
     def on_GET(self, request, room_id, event_type, txn_id):
-        return (200, "Not implemented")
+        return 200, "Not implemented"
 
     def on_PUT(self, request, room_id, event_type, txn_id):
         return self.txns.fetch_or_execute_request(
@@ -307,7 +307,7 @@ class JoinRoomAliasServlet(TransactionRestServlet):
             third_party_signed=content.get("third_party_signed", None),
         )
 
-        return (200, {"room_id": room_id})
+        return 200, {"room_id": room_id}
 
     def on_PUT(self, request, room_identifier, txn_id):
         return self.txns.fetch_or_execute_request(
@@ -360,7 +360,7 @@ class PublicRoomListRestServlet(TransactionRestServlet):
                 limit=limit, since_token=since_token
             )
 
-        return (200, data)
+        return 200, data
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -405,7 +405,7 @@ class PublicRoomListRestServlet(TransactionRestServlet):
                 network_tuple=network_tuple,
             )
 
-        return (200, data)
+        return 200, data
 
 
 # TODO: Needs unit testing
@@ -456,7 +456,7 @@ class RoomMemberListRestServlet(RestServlet):
                 continue
             chunk.append(event)
 
-        return (200, {"chunk": chunk})
+        return 200, {"chunk": chunk}
 
 
 # deprecated in favour of /members?membership=join?
@@ -477,7 +477,7 @@ class JoinedRoomMemberListRestServlet(RestServlet):
             requester, room_id
         )
 
-        return (200, {"joined": users_with_profile})
+        return 200, {"joined": users_with_profile}
 
 
 # TODO: Needs better unit testing
@@ -510,7 +510,7 @@ class RoomMessageListRestServlet(RestServlet):
             event_filter=event_filter,
         )
 
-        return (200, msgs)
+        return 200, msgs
 
 
 # TODO: Needs unit testing
@@ -531,7 +531,7 @@ class RoomStateRestServlet(RestServlet):
             user_id=requester.user.to_string(),
             is_guest=requester.is_guest,
         )
-        return (200, events)
+        return 200, events
 
 
 # TODO: Needs unit testing
@@ -550,7 +550,7 @@ class RoomInitialSyncRestServlet(RestServlet):
         content = yield self.initial_sync_handler.room_initial_sync(
             room_id=room_id, requester=requester, pagin_config=pagination_config
         )
-        return (200, content)
+        return 200, content
 
 
 class RoomEventServlet(RestServlet):
@@ -581,7 +581,7 @@ class RoomEventServlet(RestServlet):
         time_now = self.clock.time_msec()
         if event:
             event = yield self._event_serializer.serialize_event(event, time_now)
-            return (200, event)
+            return 200, event
 
         return SynapseError(404, "Event not found.", errcode=Codes.NOT_FOUND)
 
@@ -633,7 +633,7 @@ class RoomEventContextServlet(RestServlet):
             results["state"], time_now
         )
 
-        return (200, results)
+        return 200, results
 
 
 class RoomForgetRestServlet(TransactionRestServlet):
@@ -652,7 +652,7 @@ class RoomForgetRestServlet(TransactionRestServlet):
 
         yield self.room_member_handler.forget(user=requester.user, room_id=room_id)
 
-        return (200, {})
+        return 200, {}
 
     def on_PUT(self, request, room_id, txn_id):
         return self.txns.fetch_or_execute_request(
@@ -702,8 +702,7 @@ class RoomMembershipRestServlet(TransactionRestServlet):
                 requester,
                 txn_id,
             )
-            return (200, {})
-            return
+            return 200, {}
 
         target = requester.user
         if membership_action in ["invite", "ban", "unban", "kick"]:
@@ -729,7 +728,7 @@ class RoomMembershipRestServlet(TransactionRestServlet):
         if membership_action == "join":
             return_value["room_id"] = room_id
 
-        return (200, return_value)
+        return 200, return_value
 
     def _has_3pid_invite_keys(self, content):
         for key in {"id_server", "medium", "address"}:
@@ -771,7 +770,7 @@ class RoomRedactEventRestServlet(TransactionRestServlet):
             txn_id=txn_id,
         )
 
-        return (200, {"event_id": event.event_id})
+        return 200, {"event_id": event.event_id}
 
     def on_PUT(self, request, room_id, event_id, txn_id):
         return self.txns.fetch_or_execute_request(
@@ -816,7 +815,7 @@ class RoomTypingRestServlet(RestServlet):
                 target_user=target_user, auth_user=requester.user, room_id=room_id
             )
 
-        return (200, {})
+        return 200, {}
 
 
 class SearchRestServlet(RestServlet):
@@ -838,7 +837,7 @@ class SearchRestServlet(RestServlet):
             requester.user, content, batch
         )
 
-        return (200, results)
+        return 200, results
 
 
 class JoinedRoomsRestServlet(RestServlet):
@@ -854,7 +853,7 @@ class JoinedRoomsRestServlet(RestServlet):
         requester = yield self.auth.get_user_by_req(request, allow_guest=True)
 
         room_ids = yield self.store.get_rooms_for_user(requester.user.to_string())
-        return (200, {"joined_rooms": list(room_ids)})
+        return 200, {"joined_rooms": list(room_ids)}
 
 
 def register_txn_path(servlet, regex_string, http_server, with_get=False):
diff --git a/synapse/rest/client/v1/voip.py b/synapse/rest/client/v1/voip.py
index 497cddf8b8..2afdbb89e5 100644
--- a/synapse/rest/client/v1/voip.py
+++ b/synapse/rest/client/v1/voip.py
@@ -60,7 +60,7 @@ class VoipRestServlet(RestServlet):
             password = turnPassword
 
         else:
-            return (200, {})
+            return 200, {}
 
         return (
             200,
@@ -73,7 +73,7 @@ class VoipRestServlet(RestServlet):
         )
 
     def on_OPTIONS(self, request):
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py
index 934ed5d16d..0620a4d0cf 100644
--- a/synapse/rest/client/v2_alpha/account.py
+++ b/synapse/rest/client/v2_alpha/account.py
@@ -117,7 +117,7 @@ class EmailPasswordRequestTokenRestServlet(RestServlet):
             # Wrap the session id in a JSON object
             ret = {"sid": sid}
 
-        return (200, ret)
+        return 200, ret
 
     @defer.inlineCallbacks
     def send_password_reset(self, email, client_secret, send_attempt, next_link=None):
@@ -221,7 +221,7 @@ class MsisdnPasswordRequestTokenRestServlet(RestServlet):
             raise SynapseError(400, "MSISDN not found", Codes.THREEPID_NOT_FOUND)
 
         ret = yield self.identity_handler.requestMsisdnToken(**body)
-        return (200, ret)
+        return 200, ret
 
 
 class PasswordResetSubmitTokenServlet(RestServlet):
@@ -330,7 +330,7 @@ class PasswordResetSubmitTokenServlet(RestServlet):
         )
         response_code = 200 if valid else 400
 
-        return (response_code, {"success": valid})
+        return response_code, {"success": valid}
 
 
 class PasswordRestServlet(RestServlet):
@@ -399,7 +399,7 @@ class PasswordRestServlet(RestServlet):
 
         yield self._set_password_handler.set_password(user_id, new_password, requester)
 
-        return (200, {})
+        return 200, {}
 
     def on_OPTIONS(self, _):
         return 200, {}
@@ -434,7 +434,7 @@ class DeactivateAccountRestServlet(RestServlet):
             yield self._deactivate_account_handler.deactivate_account(
                 requester.user.to_string(), erase
             )
-            return (200, {})
+            return 200, {}
 
         yield self.auth_handler.validate_user_via_ui_auth(
             requester, body, self.hs.get_ip_from_request(request)
@@ -447,7 +447,7 @@ class DeactivateAccountRestServlet(RestServlet):
         else:
             id_server_unbind_result = "no-support"
 
-        return (200, {"id_server_unbind_result": id_server_unbind_result})
+        return 200, {"id_server_unbind_result": id_server_unbind_result}
 
 
 class EmailThreepidRequestTokenRestServlet(RestServlet):
@@ -481,7 +481,7 @@ class EmailThreepidRequestTokenRestServlet(RestServlet):
             raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE)
 
         ret = yield self.identity_handler.requestEmailToken(**body)
-        return (200, ret)
+        return 200, ret
 
 
 class MsisdnThreepidRequestTokenRestServlet(RestServlet):
@@ -516,7 +516,7 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet):
             raise SynapseError(400, "MSISDN is already in use", Codes.THREEPID_IN_USE)
 
         ret = yield self.identity_handler.requestMsisdnToken(**body)
-        return (200, ret)
+        return 200, ret
 
 
 class ThreepidRestServlet(RestServlet):
@@ -536,7 +536,7 @@ class ThreepidRestServlet(RestServlet):
 
         threepids = yield self.datastore.user_get_threepids(requester.user.to_string())
 
-        return (200, {"threepids": threepids})
+        return 200, {"threepids": threepids}
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -568,7 +568,7 @@ class ThreepidRestServlet(RestServlet):
             logger.debug("Binding threepid %s to %s", threepid, user_id)
             yield self.identity_handler.bind_threepid(threePidCreds, user_id)
 
-        return (200, {})
+        return 200, {}
 
 
 class ThreepidDeleteRestServlet(RestServlet):
@@ -603,7 +603,7 @@ class ThreepidDeleteRestServlet(RestServlet):
         else:
             id_server_unbind_result = "no-support"
 
-        return (200, {"id_server_unbind_result": id_server_unbind_result})
+        return 200, {"id_server_unbind_result": id_server_unbind_result}
 
 
 class WhoamiRestServlet(RestServlet):
@@ -617,7 +617,7 @@ class WhoamiRestServlet(RestServlet):
     def on_GET(self, request):
         requester = yield self.auth.get_user_by_req(request)
 
-        return (200, {"user_id": requester.user.to_string()})
+        return 200, {"user_id": requester.user.to_string()}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/account_data.py b/synapse/rest/client/v2_alpha/account_data.py
index 98f2f6f4b5..f0db204ffa 100644
--- a/synapse/rest/client/v2_alpha/account_data.py
+++ b/synapse/rest/client/v2_alpha/account_data.py
@@ -55,7 +55,7 @@ class AccountDataServlet(RestServlet):
 
         self.notifier.on_new_event("account_data_key", max_id, users=[user_id])
 
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id, account_data_type):
@@ -70,7 +70,7 @@ class AccountDataServlet(RestServlet):
         if event is None:
             raise NotFoundError("Account data not found")
 
-        return (200, event)
+        return 200, event
 
 
 class RoomAccountDataServlet(RestServlet):
@@ -112,7 +112,7 @@ class RoomAccountDataServlet(RestServlet):
 
         self.notifier.on_new_event("account_data_key", max_id, users=[user_id])
 
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id, room_id, account_data_type):
@@ -127,7 +127,7 @@ class RoomAccountDataServlet(RestServlet):
         if event is None:
             raise NotFoundError("Room account data not found")
 
-        return (200, event)
+        return 200, event
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/capabilities.py b/synapse/rest/client/v2_alpha/capabilities.py
index a4fa45fe11..acd58af193 100644
--- a/synapse/rest/client/v2_alpha/capabilities.py
+++ b/synapse/rest/client/v2_alpha/capabilities.py
@@ -58,7 +58,7 @@ class CapabilitiesRestServlet(RestServlet):
                 "m.change_password": {"enabled": change_password},
             }
         }
-        return (200, response)
+        return 200, response
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/devices.py b/synapse/rest/client/v2_alpha/devices.py
index 9adf76cc0c..26d0235208 100644
--- a/synapse/rest/client/v2_alpha/devices.py
+++ b/synapse/rest/client/v2_alpha/devices.py
@@ -48,7 +48,7 @@ class DevicesRestServlet(RestServlet):
         devices = yield self.device_handler.get_devices_by_user(
             requester.user.to_string()
         )
-        return (200, {"devices": devices})
+        return 200, {"devices": devices}
 
 
 class DeleteDevicesRestServlet(RestServlet):
@@ -91,7 +91,7 @@ class DeleteDevicesRestServlet(RestServlet):
         yield self.device_handler.delete_devices(
             requester.user.to_string(), body["devices"]
         )
-        return (200, {})
+        return 200, {}
 
 
 class DeviceRestServlet(RestServlet):
@@ -114,7 +114,7 @@ class DeviceRestServlet(RestServlet):
         device = yield self.device_handler.get_device(
             requester.user.to_string(), device_id
         )
-        return (200, device)
+        return 200, device
 
     @interactive_auth_handler
     @defer.inlineCallbacks
@@ -137,7 +137,7 @@ class DeviceRestServlet(RestServlet):
         )
 
         yield self.device_handler.delete_device(requester.user.to_string(), device_id)
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_PUT(self, request, device_id):
@@ -147,7 +147,7 @@ class DeviceRestServlet(RestServlet):
         yield self.device_handler.update_device(
             requester.user.to_string(), device_id, body
         )
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/filter.py b/synapse/rest/client/v2_alpha/filter.py
index 22be0ee3c5..c6ddf24c8d 100644
--- a/synapse/rest/client/v2_alpha/filter.py
+++ b/synapse/rest/client/v2_alpha/filter.py
@@ -56,7 +56,7 @@ class GetFilterRestServlet(RestServlet):
                 user_localpart=target_user.localpart, filter_id=filter_id
             )
 
-            return (200, filter.get_filter_json())
+            return 200, filter.get_filter_json()
         except (KeyError, StoreError):
             raise SynapseError(400, "No such filter", errcode=Codes.NOT_FOUND)
 
@@ -89,7 +89,7 @@ class CreateFilterRestServlet(RestServlet):
             user_localpart=target_user.localpart, user_filter=content
         )
 
-        return (200, {"filter_id": str(filter_id)})
+        return 200, {"filter_id": str(filter_id)}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/groups.py b/synapse/rest/client/v2_alpha/groups.py
index e629c4256d..999a0fa80c 100644
--- a/synapse/rest/client/v2_alpha/groups.py
+++ b/synapse/rest/client/v2_alpha/groups.py
@@ -47,7 +47,7 @@ class GroupServlet(RestServlet):
             group_id, requester_user_id
         )
 
-        return (200, group_description)
+        return 200, group_description
 
     @defer.inlineCallbacks
     def on_POST(self, request, group_id):
@@ -59,7 +59,7 @@ class GroupServlet(RestServlet):
             group_id, requester_user_id, content
         )
 
-        return (200, {})
+        return 200, {}
 
 
 class GroupSummaryServlet(RestServlet):
@@ -83,7 +83,7 @@ class GroupSummaryServlet(RestServlet):
             group_id, requester_user_id
         )
 
-        return (200, get_group_summary)
+        return 200, get_group_summary
 
 
 class GroupSummaryRoomsCatServlet(RestServlet):
@@ -120,7 +120,7 @@ class GroupSummaryRoomsCatServlet(RestServlet):
             content=content,
         )
 
-        return (200, resp)
+        return 200, resp
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, group_id, category_id, room_id):
@@ -131,7 +131,7 @@ class GroupSummaryRoomsCatServlet(RestServlet):
             group_id, requester_user_id, room_id=room_id, category_id=category_id
         )
 
-        return (200, resp)
+        return 200, resp
 
 
 class GroupCategoryServlet(RestServlet):
@@ -157,7 +157,7 @@ class GroupCategoryServlet(RestServlet):
             group_id, requester_user_id, category_id=category_id
         )
 
-        return (200, category)
+        return 200, category
 
     @defer.inlineCallbacks
     def on_PUT(self, request, group_id, category_id):
@@ -169,7 +169,7 @@ class GroupCategoryServlet(RestServlet):
             group_id, requester_user_id, category_id=category_id, content=content
         )
 
-        return (200, resp)
+        return 200, resp
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, group_id, category_id):
@@ -180,7 +180,7 @@ class GroupCategoryServlet(RestServlet):
             group_id, requester_user_id, category_id=category_id
         )
 
-        return (200, resp)
+        return 200, resp
 
 
 class GroupCategoriesServlet(RestServlet):
@@ -204,7 +204,7 @@ class GroupCategoriesServlet(RestServlet):
             group_id, requester_user_id
         )
 
-        return (200, category)
+        return 200, category
 
 
 class GroupRoleServlet(RestServlet):
@@ -228,7 +228,7 @@ class GroupRoleServlet(RestServlet):
             group_id, requester_user_id, role_id=role_id
         )
 
-        return (200, category)
+        return 200, category
 
     @defer.inlineCallbacks
     def on_PUT(self, request, group_id, role_id):
@@ -240,7 +240,7 @@ class GroupRoleServlet(RestServlet):
             group_id, requester_user_id, role_id=role_id, content=content
         )
 
-        return (200, resp)
+        return 200, resp
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, group_id, role_id):
@@ -251,7 +251,7 @@ class GroupRoleServlet(RestServlet):
             group_id, requester_user_id, role_id=role_id
         )
 
-        return (200, resp)
+        return 200, resp
 
 
 class GroupRolesServlet(RestServlet):
@@ -275,7 +275,7 @@ class GroupRolesServlet(RestServlet):
             group_id, requester_user_id
         )
 
-        return (200, category)
+        return 200, category
 
 
 class GroupSummaryUsersRoleServlet(RestServlet):
@@ -312,7 +312,7 @@ class GroupSummaryUsersRoleServlet(RestServlet):
             content=content,
         )
 
-        return (200, resp)
+        return 200, resp
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, group_id, role_id, user_id):
@@ -323,7 +323,7 @@ class GroupSummaryUsersRoleServlet(RestServlet):
             group_id, requester_user_id, user_id=user_id, role_id=role_id
         )
 
-        return (200, resp)
+        return 200, resp
 
 
 class GroupRoomServlet(RestServlet):
@@ -347,7 +347,7 @@ class GroupRoomServlet(RestServlet):
             group_id, requester_user_id
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupUsersServlet(RestServlet):
@@ -371,7 +371,7 @@ class GroupUsersServlet(RestServlet):
             group_id, requester_user_id
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupInvitedUsersServlet(RestServlet):
@@ -395,7 +395,7 @@ class GroupInvitedUsersServlet(RestServlet):
             group_id, requester_user_id
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupSettingJoinPolicyServlet(RestServlet):
@@ -420,7 +420,7 @@ class GroupSettingJoinPolicyServlet(RestServlet):
             group_id, requester_user_id, content
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupCreateServlet(RestServlet):
@@ -450,7 +450,7 @@ class GroupCreateServlet(RestServlet):
             group_id, requester_user_id, content
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupAdminRoomsServlet(RestServlet):
@@ -477,7 +477,7 @@ class GroupAdminRoomsServlet(RestServlet):
             group_id, requester_user_id, room_id, content
         )
 
-        return (200, result)
+        return 200, result
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, group_id, room_id):
@@ -488,7 +488,7 @@ class GroupAdminRoomsServlet(RestServlet):
             group_id, requester_user_id, room_id
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupAdminRoomsConfigServlet(RestServlet):
@@ -516,7 +516,7 @@ class GroupAdminRoomsConfigServlet(RestServlet):
             group_id, requester_user_id, room_id, config_key, content
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupAdminUsersInviteServlet(RestServlet):
@@ -546,7 +546,7 @@ class GroupAdminUsersInviteServlet(RestServlet):
             group_id, user_id, requester_user_id, config
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupAdminUsersKickServlet(RestServlet):
@@ -573,7 +573,7 @@ class GroupAdminUsersKickServlet(RestServlet):
             group_id, user_id, requester_user_id, content
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupSelfLeaveServlet(RestServlet):
@@ -598,7 +598,7 @@ class GroupSelfLeaveServlet(RestServlet):
             group_id, requester_user_id, requester_user_id, content
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupSelfJoinServlet(RestServlet):
@@ -623,7 +623,7 @@ class GroupSelfJoinServlet(RestServlet):
             group_id, requester_user_id, content
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupSelfAcceptInviteServlet(RestServlet):
@@ -648,7 +648,7 @@ class GroupSelfAcceptInviteServlet(RestServlet):
             group_id, requester_user_id, content
         )
 
-        return (200, result)
+        return 200, result
 
 
 class GroupSelfUpdatePublicityServlet(RestServlet):
@@ -672,7 +672,7 @@ class GroupSelfUpdatePublicityServlet(RestServlet):
         publicise = content["publicise"]
         yield self.store.update_group_publicity(group_id, requester_user_id, publicise)
 
-        return (200, {})
+        return 200, {}
 
 
 class PublicisedGroupsForUserServlet(RestServlet):
@@ -694,7 +694,7 @@ class PublicisedGroupsForUserServlet(RestServlet):
 
         result = yield self.groups_handler.get_publicised_groups_for_user(user_id)
 
-        return (200, result)
+        return 200, result
 
 
 class PublicisedGroupsForUsersServlet(RestServlet):
@@ -719,7 +719,7 @@ class PublicisedGroupsForUsersServlet(RestServlet):
 
         result = yield self.groups_handler.bulk_get_publicised_groups(user_ids)
 
-        return (200, result)
+        return 200, result
 
 
 class GroupsForUserServlet(RestServlet):
@@ -741,7 +741,7 @@ class GroupsForUserServlet(RestServlet):
 
         result = yield self.groups_handler.get_joined_groups(requester_user_id)
 
-        return (200, result)
+        return 200, result
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/keys.py b/synapse/rest/client/v2_alpha/keys.py
index b218a3f334..151a70d449 100644
--- a/synapse/rest/client/v2_alpha/keys.py
+++ b/synapse/rest/client/v2_alpha/keys.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2019 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -24,10 +25,10 @@ from synapse.http.servlet import (
     parse_json_object_from_request,
     parse_string,
 )
-from synapse.logging.opentracing import log_kv, set_tag, trace_using_operation_name
+from synapse.logging.opentracing import log_kv, set_tag, trace
 from synapse.types import StreamToken
 
-from ._base import client_patterns
+from ._base import client_patterns, interactive_auth_handler
 
 logger = logging.getLogger(__name__)
 
@@ -69,7 +70,7 @@ class KeyUploadServlet(RestServlet):
         self.auth = hs.get_auth()
         self.e2e_keys_handler = hs.get_e2e_keys_handler()
 
-    @trace_using_operation_name("upload_keys")
+    @trace(opname="upload_keys")
     @defer.inlineCallbacks
     def on_POST(self, request, device_id):
         requester = yield self.auth.get_user_by_req(request, allow_guest=True)
@@ -105,7 +106,7 @@ class KeyUploadServlet(RestServlet):
         result = yield self.e2e_keys_handler.upload_keys_for_user(
             user_id, device_id, body
         )
-        return (200, result)
+        return 200, result
 
 
 class KeyQueryServlet(RestServlet):
@@ -155,11 +156,12 @@ class KeyQueryServlet(RestServlet):
 
     @defer.inlineCallbacks
     def on_POST(self, request):
-        yield self.auth.get_user_by_req(request, allow_guest=True)
+        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
+        user_id = requester.user.to_string()
         timeout = parse_integer(request, "timeout", 10 * 1000)
         body = parse_json_object_from_request(request)
-        result = yield self.e2e_keys_handler.query_devices(body, timeout)
-        return (200, result)
+        result = yield self.e2e_keys_handler.query_devices(body, timeout, user_id)
+        return 200, result
 
 
 class KeyChangesServlet(RestServlet):
@@ -200,7 +202,7 @@ class KeyChangesServlet(RestServlet):
 
         results = yield self.device_handler.get_user_ids_changed(user_id, from_token)
 
-        return (200, results)
+        return 200, results
 
 
 class OneTimeKeyServlet(RestServlet):
@@ -235,6 +237,43 @@ class OneTimeKeyServlet(RestServlet):
         timeout = parse_integer(request, "timeout", 10 * 1000)
         body = parse_json_object_from_request(request)
         result = yield self.e2e_keys_handler.claim_one_time_keys(body, timeout)
+        return 200, result
+
+
+class SigningKeyUploadServlet(RestServlet):
+    """
+    POST /keys/device_signing/upload HTTP/1.1
+    Content-Type: application/json
+
+    {
+    }
+    """
+
+    PATTERNS = client_patterns("/keys/device_signing/upload$", releases=())
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        super(SigningKeyUploadServlet, self).__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.e2e_keys_handler = hs.get_e2e_keys_handler()
+        self.auth_handler = hs.get_auth_handler()
+
+    @interactive_auth_handler
+    @defer.inlineCallbacks
+    def on_POST(self, request):
+        requester = yield self.auth.get_user_by_req(request)
+        user_id = requester.user.to_string()
+        body = parse_json_object_from_request(request)
+
+        yield self.auth_handler.validate_user_via_ui_auth(
+            requester, body, self.hs.get_ip_from_request(request)
+        )
+
+        result = yield self.e2e_keys_handler.upload_signing_keys_for_user(user_id, body)
         return (200, result)
 
 
@@ -243,3 +282,4 @@ def register_servlets(hs, http_server):
     KeyQueryServlet(hs).register(http_server)
     KeyChangesServlet(hs).register(http_server)
     OneTimeKeyServlet(hs).register(http_server)
+    SigningKeyUploadServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v2_alpha/notifications.py b/synapse/rest/client/v2_alpha/notifications.py
index d034863a3c..10c1ad5b07 100644
--- a/synapse/rest/client/v2_alpha/notifications.py
+++ b/synapse/rest/client/v2_alpha/notifications.py
@@ -88,7 +88,7 @@ class NotificationsServlet(RestServlet):
             returned_push_actions.append(returned_pa)
             next_token = str(pa["stream_ordering"])
 
-        return (200, {"notifications": returned_push_actions, "next_token": next_token})
+        return 200, {"notifications": returned_push_actions, "next_token": next_token}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/read_marker.py b/synapse/rest/client/v2_alpha/read_marker.py
index d93d6a9f24..b3bf8567e1 100644
--- a/synapse/rest/client/v2_alpha/read_marker.py
+++ b/synapse/rest/client/v2_alpha/read_marker.py
@@ -59,7 +59,7 @@ class ReadMarkerRestServlet(RestServlet):
                 event_id=read_marker_event_id,
             )
 
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/receipts.py b/synapse/rest/client/v2_alpha/receipts.py
index 98a97b7059..0dab03d227 100644
--- a/synapse/rest/client/v2_alpha/receipts.py
+++ b/synapse/rest/client/v2_alpha/receipts.py
@@ -52,7 +52,7 @@ class ReceiptRestServlet(RestServlet):
             room_id, receipt_type, user_id=requester.user.to_string(), event_id=event_id
         )
 
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index 9510a1e2b0..1ccd2bed2f 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -94,7 +94,7 @@ class EmailRegisterRequestTokenRestServlet(RestServlet):
             raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE)
 
         ret = yield self.identity_handler.requestEmailToken(**body)
-        return (200, ret)
+        return 200, ret
 
 
 class MsisdnRegisterRequestTokenRestServlet(RestServlet):
@@ -137,7 +137,7 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet):
             )
 
         ret = yield self.identity_handler.requestMsisdnToken(**body)
-        return (200, ret)
+        return 200, ret
 
 
 class UsernameAvailabilityRestServlet(RestServlet):
@@ -177,7 +177,7 @@ class UsernameAvailabilityRestServlet(RestServlet):
 
             yield self.registration_handler.check_username(username)
 
-            return (200, {"available": True})
+            return 200, {"available": True}
 
 
 class RegisterRestServlet(RestServlet):
@@ -230,7 +230,6 @@ class RegisterRestServlet(RestServlet):
         if kind == b"guest":
             ret = yield self._do_guest_registration(body, address=client_addr)
             return ret
-            return
         elif kind != b"user":
             raise UnrecognizedRequestError(
                 "Do not understand membership kind: %s" % (kind,)
@@ -279,8 +278,7 @@ class RegisterRestServlet(RestServlet):
                 result = yield self._do_appservice_registration(
                     desired_username, access_token, body
                 )
-            return (200, result)  # we throw for non 200 responses
-            return
+            return 200, result  # we throw for non 200 responses
 
         # for regular registration, downcase the provided username before
         # attempting to register it. This should mean
@@ -483,11 +481,9 @@ class RegisterRestServlet(RestServlet):
                 user_id=registered_user_id,
                 auth_result=auth_result,
                 access_token=return_dict.get("access_token"),
-                bind_email=params.get("bind_email"),
-                bind_msisdn=params.get("bind_msisdn"),
             )
 
-        return (200, return_dict)
+        return 200, return_dict
 
     def on_OPTIONS(self, _):
         return 200, {}
diff --git a/synapse/rest/client/v2_alpha/relations.py b/synapse/rest/client/v2_alpha/relations.py
index 1538b247e5..040b37c504 100644
--- a/synapse/rest/client/v2_alpha/relations.py
+++ b/synapse/rest/client/v2_alpha/relations.py
@@ -118,7 +118,7 @@ class RelationSendServlet(RestServlet):
             requester, event_dict=event_dict, txn_id=txn_id
         )
 
-        return (200, {"event_id": event.event_id})
+        return 200, {"event_id": event.event_id}
 
 
 class RelationPaginationServlet(RestServlet):
@@ -198,7 +198,7 @@ class RelationPaginationServlet(RestServlet):
         return_value["chunk"] = events
         return_value["original_event"] = original_event
 
-        return (200, return_value)
+        return 200, return_value
 
 
 class RelationAggregationPaginationServlet(RestServlet):
@@ -270,7 +270,7 @@ class RelationAggregationPaginationServlet(RestServlet):
                 to_token=to_token,
             )
 
-        return (200, pagination_chunk.to_dict())
+        return 200, pagination_chunk.to_dict()
 
 
 class RelationAggregationGroupPaginationServlet(RestServlet):
@@ -356,7 +356,7 @@ class RelationAggregationGroupPaginationServlet(RestServlet):
         return_value = result.to_dict()
         return_value["chunk"] = events
 
-        return (200, return_value)
+        return 200, return_value
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/report_event.py b/synapse/rest/client/v2_alpha/report_event.py
index 3fdd4584a3..e7449864cd 100644
--- a/synapse/rest/client/v2_alpha/report_event.py
+++ b/synapse/rest/client/v2_alpha/report_event.py
@@ -72,7 +72,7 @@ class ReportEventRestServlet(RestServlet):
             received_ts=self.clock.time_msec(),
         )
 
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/room_keys.py b/synapse/rest/client/v2_alpha/room_keys.py
index 10dec96208..df4f44cd36 100644
--- a/synapse/rest/client/v2_alpha/room_keys.py
+++ b/synapse/rest/client/v2_alpha/room_keys.py
@@ -135,7 +135,7 @@ class RoomKeysServlet(RestServlet):
             body = {"rooms": {room_id: body}}
 
         yield self.e2e_room_keys_handler.upload_room_keys(user_id, version, body)
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id, session_id):
@@ -218,7 +218,7 @@ class RoomKeysServlet(RestServlet):
             else:
                 room_keys = room_keys["rooms"][room_id]
 
-        return (200, room_keys)
+        return 200, room_keys
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, room_id, session_id):
@@ -242,7 +242,7 @@ class RoomKeysServlet(RestServlet):
         yield self.e2e_room_keys_handler.delete_room_keys(
             user_id, version, room_id, session_id
         )
-        return (200, {})
+        return 200, {}
 
 
 class RoomKeysNewVersionServlet(RestServlet):
@@ -293,7 +293,7 @@ class RoomKeysNewVersionServlet(RestServlet):
         info = parse_json_object_from_request(request)
 
         new_version = yield self.e2e_room_keys_handler.create_version(user_id, info)
-        return (200, {"version": new_version})
+        return 200, {"version": new_version}
 
     # we deliberately don't have a PUT /version, as these things really should
     # be immutable to avoid people footgunning
@@ -338,7 +338,7 @@ class RoomKeysVersionServlet(RestServlet):
         except SynapseError as e:
             if e.code == 404:
                 raise SynapseError(404, "No backup found", Codes.NOT_FOUND)
-        return (200, info)
+        return 200, info
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, version):
@@ -358,7 +358,7 @@ class RoomKeysVersionServlet(RestServlet):
         user_id = requester.user.to_string()
 
         yield self.e2e_room_keys_handler.delete_version(user_id, version)
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_PUT(self, request, version):
@@ -392,7 +392,7 @@ class RoomKeysVersionServlet(RestServlet):
             )
 
         yield self.e2e_room_keys_handler.update_version(user_id, version, info)
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py b/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py
index 14ba61a63e..d2c3316eb7 100644
--- a/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py
+++ b/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py
@@ -80,7 +80,7 @@ class RoomUpgradeRestServlet(RestServlet):
 
         ret = {"replacement_room": new_room_id}
 
-        return (200, ret)
+        return 200, ret
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/sendtodevice.py b/synapse/rest/client/v2_alpha/sendtodevice.py
index 2613648d82..d90e52ed1a 100644
--- a/synapse/rest/client/v2_alpha/sendtodevice.py
+++ b/synapse/rest/client/v2_alpha/sendtodevice.py
@@ -19,6 +19,7 @@ from twisted.internet import defer
 
 from synapse.http import servlet
 from synapse.http.servlet import parse_json_object_from_request
+from synapse.logging.opentracing import set_tag, trace
 from synapse.rest.client.transactions import HttpTransactionCache
 
 from ._base import client_patterns
@@ -42,7 +43,10 @@ class SendToDeviceRestServlet(servlet.RestServlet):
         self.txns = HttpTransactionCache(hs)
         self.device_message_handler = hs.get_device_message_handler()
 
+    @trace(opname="sendToDevice")
     def on_PUT(self, request, message_type, txn_id):
+        set_tag("message_type", message_type)
+        set_tag("txn_id", txn_id)
         return self.txns.fetch_or_execute_request(
             request, self._put, request, message_type, txn_id
         )
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index 7b32dd2212..c98c5a3802 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -174,7 +174,7 @@ class SyncRestServlet(RestServlet):
             time_now, sync_result, requester.access_token_id, filter
         )
 
-        return (200, response_content)
+        return 200, response_content
 
     @defer.inlineCallbacks
     def encode_response(self, time_now, sync_result, access_token_id, filter):
diff --git a/synapse/rest/client/v2_alpha/tags.py b/synapse/rest/client/v2_alpha/tags.py
index d173544355..3b555669a0 100644
--- a/synapse/rest/client/v2_alpha/tags.py
+++ b/synapse/rest/client/v2_alpha/tags.py
@@ -45,7 +45,7 @@ class TagListServlet(RestServlet):
 
         tags = yield self.store.get_tags_for_room(user_id, room_id)
 
-        return (200, {"tags": tags})
+        return 200, {"tags": tags}
 
 
 class TagServlet(RestServlet):
@@ -76,7 +76,7 @@ class TagServlet(RestServlet):
 
         self.notifier.on_new_event("account_data_key", max_id, users=[user_id])
 
-        return (200, {})
+        return 200, {}
 
     @defer.inlineCallbacks
     def on_DELETE(self, request, user_id, room_id, tag):
@@ -88,7 +88,7 @@ class TagServlet(RestServlet):
 
         self.notifier.on_new_event("account_data_key", max_id, users=[user_id])
 
-        return (200, {})
+        return 200, {}
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/thirdparty.py b/synapse/rest/client/v2_alpha/thirdparty.py
index 158e686b01..2e8d672471 100644
--- a/synapse/rest/client/v2_alpha/thirdparty.py
+++ b/synapse/rest/client/v2_alpha/thirdparty.py
@@ -40,7 +40,7 @@ class ThirdPartyProtocolsServlet(RestServlet):
         yield self.auth.get_user_by_req(request, allow_guest=True)
 
         protocols = yield self.appservice_handler.get_3pe_protocols()
-        return (200, protocols)
+        return 200, protocols
 
 
 class ThirdPartyProtocolServlet(RestServlet):
@@ -60,9 +60,9 @@ class ThirdPartyProtocolServlet(RestServlet):
             only_protocol=protocol
         )
         if protocol in protocols:
-            return (200, protocols[protocol])
+            return 200, protocols[protocol]
         else:
-            return (404, {"error": "Unknown protocol"})
+            return 404, {"error": "Unknown protocol"}
 
 
 class ThirdPartyUserServlet(RestServlet):
@@ -85,7 +85,7 @@ class ThirdPartyUserServlet(RestServlet):
             ThirdPartyEntityKind.USER, protocol, fields
         )
 
-        return (200, results)
+        return 200, results
 
 
 class ThirdPartyLocationServlet(RestServlet):
@@ -108,7 +108,7 @@ class ThirdPartyLocationServlet(RestServlet):
             ThirdPartyEntityKind.LOCATION, protocol, fields
         )
 
-        return (200, results)
+        return 200, results
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/user_directory.py b/synapse/rest/client/v2_alpha/user_directory.py
index 7ab2b80e46..2863affbab 100644
--- a/synapse/rest/client/v2_alpha/user_directory.py
+++ b/synapse/rest/client/v2_alpha/user_directory.py
@@ -60,7 +60,7 @@ class UserDirectorySearchRestServlet(RestServlet):
         user_id = requester.user.to_string()
 
         if not self.hs.config.user_directory_search_enabled:
-            return (200, {"limited": False, "results": []})
+            return 200, {"limited": False, "results": []}
 
         body = parse_json_object_from_request(request)
 
@@ -76,7 +76,7 @@ class UserDirectorySearchRestServlet(RestServlet):
             user_id, search_term, limit
         )
 
-        return (200, results)
+        return 200, results
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index cf5759e9a6..b972e152a9 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -318,14 +318,14 @@ class MediaRepository(object):
 
             responder = yield self.media_storage.fetch_media(file_info)
             if responder:
-                return (responder, media_info)
+                return responder, media_info
 
         # Failed to find the file anywhere, lets download it.
 
         media_info = yield self._download_remote_file(server_name, media_id, file_id)
 
         responder = yield self.media_storage.fetch_media(file_info)
-        return (responder, media_info)
+        return responder, media_info
 
     @defer.inlineCallbacks
     def _download_remote_file(self, server_name, media_id, file_id):
@@ -526,7 +526,7 @@ class MediaRepository(object):
             try:
                 file_info = FileInfo(
                     server_name=server_name,
-                    file_id=media_id,
+                    file_id=file_id,
                     thumbnail=True,
                     thumbnail_width=t_width,
                     thumbnail_height=t_height,
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index bd40891a7f..7a56cd4b6c 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -183,7 +183,6 @@ class PreviewUrlResource(DirectServeResource):
             if isinstance(og, six.text_type):
                 og = og.encode("utf8")
             return og
-            return
 
         media_info = yield self._download_url(url, user)
 
diff --git a/synapse/rest/media/v1/thumbnailer.py b/synapse/rest/media/v1/thumbnailer.py
index 90d8e6bffe..c995d7e043 100644
--- a/synapse/rest/media/v1/thumbnailer.py
+++ b/synapse/rest/media/v1/thumbnailer.py
@@ -78,9 +78,9 @@ class Thumbnailer(object):
         """
 
         if max_width * self.height < max_height * self.width:
-            return (max_width, (max_width * self.height) // self.width)
+            return max_width, (max_width * self.height) // self.width
         else:
-            return ((max_height * self.width) // self.height, max_height)
+            return (max_height * self.width) // self.height, max_height
 
     def scale(self, width, height, output_type):
         """Rescales the image to the given dimensions.