diff options
Diffstat (limited to 'synapse/handlers')
| -rw-r--r-- | synapse/handlers/user_directory.py | 161 |
1 files changed, 120 insertions, 41 deletions
diff --git a/synapse/handlers/user_directory.py b/synapse/handlers/user_directory.py index 4a9565df93..88b79e3325 100644 --- a/synapse/handlers/user_directory.py +++ b/synapse/handlers/user_directory.py @@ -26,25 +26,54 @@ logger = logging.getLogger(__name__) class UserDirectoyHandler(object): + """Handles querying of and keeping updated the user_directory. + + N.B.: ASSUMES IT IS THE ONLY THING THAT MODIFIES THE USER DIRECTORY + """ + def __init__(self, hs): self.store = hs.get_datastore() self.state = hs.get_state_handler() self.server_name = hs.hostname self.clock = hs.get_clock() + # When start up for the first time we need to populate the user_directory. + # This is a set of user_id's we've inserted already self.initially_handled_users = set() + # The current position in the current_state_delta stream self.pos = None + # Guard to ensure we only process deltas one at a time self._is_processing = False + # We kick this off so that we don't have to wait for a change before + # we start populating the user directory self.clock.call_later(0, self.notify_new_event) def search_users(self, search_term, limit): + """Searches for users in directory + + Returns: + dict of the form:: + + { + "limited": <bool>, # whether there were more results or not + "results": [ # Ordered by best match first + { + "user_id": <user_id>, + "display_name": <display_name>, + "avatar_url": <avatar_url> + } + ] + } + """ return self.store.search_user_dir(search_term, limit) @defer.inlineCallbacks def notify_new_event(self): + """Called when there may be more deltas to process + """ if self._is_processing: return @@ -56,13 +85,16 @@ class UserDirectoyHandler(object): @defer.inlineCallbacks def _unsafe_process(self): + # If self.pos is None then means we haven't fetched it from DB if self.pos is None: self.pos = yield self.store.get_user_directory_stream_pos() + # If still None then we need to do the initial fill of directory if self.pos is None: yield self._do_initial_spam() self.pos = yield self.store.get_user_directory_stream_pos() + # Loop round handling deltas until we're up to date while True: with Measure(self.clock, "user_dir_delta"): deltas = yield self.store.get_current_state_deltas(self.pos) @@ -75,68 +107,52 @@ class UserDirectoyHandler(object): yield self.store.update_user_directory_stream_pos(self.pos) @defer.inlineCallbacks - def _handle_room(self, room_id): - # TODO: Check we're still joined to room - - is_public = yield self.store.is_room_world_readable_or_publicly_joinable(room_id) - if not is_public: - return - - users_with_profile = yield self.state.get_current_user_in_room(room_id) - unhandled_users = set(users_with_profile) - self.initially_handled_users - - yield self.store.add_profiles_to_user_dir( - room_id, { - user_id: users_with_profile[user_id] for user_id in unhandled_users - } - ) - - self.initially_handled_users |= unhandled_users - - @defer.inlineCallbacks def _do_initial_spam(self): + """Populates the user_directory from the current state of the DB, used + when synapse first starts with user_directory support + """ + # TODO: pull from current delta stream_id new_pos = self.store.get_room_max_stream_ordering() + # Delete any existing entries just in case there are any yield self.store.delete_all_from_user_dir() + # We process by going through each existing room at a time. room_ids = yield self.store.get_all_rooms() for room_id in room_ids: - yield self._handle_room(room_id) + yield self._handle_intial_room(room_id) self.initially_handled_users = None yield self.store.update_user_directory_stream_pos(new_pos) @defer.inlineCallbacks - def _handle_new_user(self, room_id, user_id, profile): - row = yield self.store.get_user_in_directory(user_id) - if row: - return - - yield self.store.add_profiles_to_user_dir(room_id, {user_id: profile}) + def _handle_intial_room(self, room_id): + """Called when we initially fill out user_directory one room at a time + """ + # TODO: Check we're still joined to room - def _handle_remove_user(self, room_id, user_id): - row = yield self.store.get_user_in_directory(user_id) - if not row or row["room_id"] != room_id: + is_public = yield self.store.is_room_world_readable_or_publicly_joinable(room_id) + if not is_public: return - # TODO: Make this faster? - rooms = yield self.store.get_rooms_for_user(user_id) - for j_room_id in rooms: - is_public = yield self.store.is_room_world_readable_or_publicly_joinable( - j_room_id - ) + users_with_profile = yield self.state.get_current_user_in_room(room_id) + unhandled_users = set(users_with_profile) - self.initially_handled_users - if is_public: - yield self.store.update_user_in_user_dir(user_id, j_room_id) - return + yield self.store.add_profiles_to_user_dir( + room_id, { + user_id: users_with_profile[user_id] for user_id in unhandled_users + } + ) - yield self.store.remove_from_user_dir(user_id) + self.initially_handled_users |= unhandled_users @defer.inlineCallbacks def _handle_deltas(self, deltas): + """Called with the state deltas to process + """ for delta in deltas: typ = delta["type"] state_key = delta["state_key"] @@ -144,22 +160,33 @@ class UserDirectoyHandler(object): event_id = delta["event_id"] prev_event_id = delta["prev_event_id"] + # For join rule and visibility changes we need to check if the room + # may have become public or not and add/remove the users in said room if typ == EventTypes.RoomHistoryVisibility: change = yield self._get_key_change( prev_event_id, event_id, key_name="history_visibility", public_value="world_readable", ) + + # If change is None, no change. True => become world readable, + # False => was world readable if change is None: continue + # There's been a change to or from being world readable. + is_public = yield self.store.is_room_world_readable_or_publicly_joinable( room_id ) - if change and is_public: + if change and not is_public: + # If we became world readable but room isn't currently public then + # we ignore the change continue - elif not change and not is_public: + elif not change and is_public: + # If we stopped being world readable but are still public, + # ignore the change continue users_with_profile = yield self.state.get_current_user_in_room(room_id) @@ -214,7 +241,59 @@ class UserDirectoyHandler(object): yield self._handle_remove_user(room_id, state_key) @defer.inlineCallbacks + def _handle_new_user(self, room_id, user_id, profile): + """Called when we might need to add user to directory + + Args: + room_id (str): room_id that user joined or started being public that + user_id (str) + """ + row = yield self.store.get_user_in_directory(user_id) + if row: + return + + yield self.store.add_profiles_to_user_dir(room_id, {user_id: profile}) + + def _handle_remove_user(self, room_id, user_id): + """Called when we might need to remove user to directory + + Args: + room_id (str): room_id that user left or stopped being public that + user_id (str) + """ + row = yield self.store.get_user_in_directory(user_id) + if not row or row["room_id"] != room_id: + # Either the user wasn't in directory or we're still in a room that + # is public (i.e. the room_id in the database) + return + + # TODO: Make this faster? + rooms = yield self.store.get_rooms_for_user(user_id) + for j_room_id in rooms: + is_public = yield self.store.is_room_world_readable_or_publicly_joinable( + j_room_id + ) + + if is_public: + yield self.store.update_user_in_user_dir(user_id, j_room_id) + return + + yield self.store.remove_from_user_dir(user_id) + + @defer.inlineCallbacks def _get_key_change(self, prev_event_id, event_id, key_name, public_value): + """Given two events check if the `key_name` field in content changed + from not matching `public_value` to doing so. + + For example, check if `history_visibility` (`key_name`) changed from + `shared` to `world_readable` (`public_value`). + + Returns: + None if the field in the events either both match `public_value` o + neither do, i.e. there has been no change. + True if it didnt match `public_value` but now does + Falsse if it did match `public_value` but now doesn't + """ prev_event = None event = None if prev_event_id: |