create support user (#4141)

Allow for the creation of a support user.

A support user can access the server, join rooms, interact with other users, but does not appear in the user directory nor does it contribute to monthly active user limits.

1 files changed, 25 insertions, 20 deletions

diff --git a/synapse/handlers/user_directory.py b/synapse/handlers/user_directory.py
index f11b430126..3c40999338 100644
--- a/synapse/handlers/user_directory.py
+++ b/synapse/handlers/user_directory.py
@@ -125,9 +125,12 @@ class UserDirectoryHandler(object):
         """
         # FIXME(#3714): We should probably do this in the same worker as all
         # the other changes.
-        yield self.store.update_profile_in_user_dir(
-            user_id, profile.display_name, profile.avatar_url, None,
-        )
+        is_support = yield self.store.is_support_user(user_id)
+        # Support users are for diagnostics and should not appear in the user directory.
+        if not is_support:
+            yield self.store.update_profile_in_user_dir(
+                user_id, profile.display_name, profile.avatar_url, None,
+            )
 
     @defer.inlineCallbacks
     def handle_user_deactivated(self, user_id):
@@ -329,14 +332,7 @@ class UserDirectoryHandler(object):
                     public_value=Membership.JOIN,
                 )
 
-                if change is None:
-                    # Handle any profile changes
-                    yield self._handle_profile_change(
-                        state_key, room_id, prev_event_id, event_id,
-                    )
-                    continue
-
-                if not change:
+                if change is False:
                     # Need to check if the server left the room entirely, if so
                     # we might need to remove all the users in that room
                     is_in_room = yield self.store.is_host_joined(
@@ -354,16 +350,25 @@ class UserDirectoryHandler(object):
                     else:
                         logger.debug("Server is still in room: %r", room_id)
 
-                if change:  # The user joined
-                    event = yield self.store.get_event(event_id, allow_none=True)
-                    profile = ProfileInfo(
-                        avatar_url=event.content.get("avatar_url"),
-                        display_name=event.content.get("displayname"),
-                    )
+                is_support = yield self.store.is_support_user(state_key)
+                if not is_support:
+                    if change is None:
+                        # Handle any profile changes
+                        yield self._handle_profile_change(
+                            state_key, room_id, prev_event_id, event_id,
+                        )
+                        continue
+
+                    if change:  # The user joined
+                        event = yield self.store.get_event(event_id, allow_none=True)
+                        profile = ProfileInfo(
+                            avatar_url=event.content.get("avatar_url"),
+                            display_name=event.content.get("displayname"),
+                        )
 
-                    yield self._handle_new_user(room_id, state_key, profile)
-                else:  # The user left
-                    yield self._handle_remove_user(room_id, state_key)
+                        yield self._handle_new_user(room_id, state_key, profile)
+                    else:  # The user left
+                        yield self._handle_remove_user(room_id, state_key)
             else:
                 logger.debug("Ignoring irrelevant type: %r", typ)