diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/handlers/device.py | 46 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/keys.py | 2 | ||||
| -rw-r--r-- | synapse/storage/stream.py | 14 |
3 files changed, 57 insertions, 5 deletions
diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py index 4a28d95967..815410969c 100644 --- a/synapse/handlers/device.py +++ b/synapse/handlers/device.py @@ -14,6 +14,7 @@ # limitations under the License. from synapse.api import errors +from synapse.api.constants import EventTypes from synapse.util import stringutils from synapse.util.async import Linearizer from synapse.types import get_domain_from_id @@ -221,15 +222,52 @@ class DeviceHandler(BaseHandler): self.federation_sender.send_device_messages(host) @defer.inlineCallbacks - def get_user_ids_changed(self, user_id, from_device_key): + def get_user_ids_changed(self, user_id, from_token): + """Get list of users that have had the devices updated, or have newly + joined a room, that `user_id` may be interested in. + + Args: + user_id (str) + from_token (StreamToken) + """ rooms = yield self.store.get_rooms_for_user(user_id) room_ids = set(r.room_id for r in rooms) - user_ids_changed = set() + # First we check if any devices have changed changed = yield self.store.get_user_whose_devices_changed( - from_device_key + from_token.device_list_key ) - for other_user_id in changed: + + # Then work out if any users have since joined + rooms_changed = self.store.get_rooms_that_changed(room_ids, from_token.room_key) + + possibly_changed = set(changed) + for room_id in rooms_changed: + # Fetch (an approximation) of the current state at the time. + event_rows, token = yield self.store.get_recent_event_ids_for_room( + room_id, end_token=from_token.room_key, limit=1, + ) + + if event_rows: + last_event_id = event_rows[-1]["event_id"] + prev_state_ids = yield self.store.get_state_ids_for_event(last_event_id) + else: + prev_state_ids = {} + + current_state_ids = yield self.state.get_current_state_ids(room_id) + + # If there has been any change in membership, include them in the + # possibly changed list. We'll check if they are joined below, + # and we're not toooo worried about spuriously adding users. + for key, event_id in current_state_ids.iteritems(): + etype, state_key = key + if etype == EventTypes.Member: + prev_event_id = prev_state_ids.get(key, None) + if not prev_event_id or prev_event_id != event_id: + possibly_changed.add(state_key) + + user_ids_changed = set() + for other_user_id in possibly_changed: other_rooms = yield self.store.get_rooms_for_user(other_user_id) if room_ids.intersection(e.room_id for e in other_rooms): user_ids_changed.add(other_user_id) diff --git a/synapse/rest/client/v2_alpha/keys.py b/synapse/rest/client/v2_alpha/keys.py index 4590efa6bf..f99b53530a 100644 --- a/synapse/rest/client/v2_alpha/keys.py +++ b/synapse/rest/client/v2_alpha/keys.py @@ -189,7 +189,7 @@ class KeyChangesServlet(RestServlet): user_id = requester.user.to_string() changed = yield self.device_handler.get_user_ids_changed( - user_id, from_token.device_list_key, + user_id, from_token, ) defer.returnValue((200, { diff --git a/synapse/storage/stream.py b/synapse/storage/stream.py index 2dc24951c4..200d124632 100644 --- a/synapse/storage/stream.py +++ b/synapse/storage/stream.py @@ -244,6 +244,20 @@ class StreamStore(SQLBaseStore): defer.returnValue(results) + def get_rooms_that_changed(self, room_ids, from_key): + """Given a list of rooms and a token, return rooms where there may have + been changes. + + Args: + room_ids (list) + from_key (str): The room_key portion of a StreamToken + """ + from_key = RoomStreamToken.parse_stream_token(from_key).stream + return set( + room_id for room_id in room_ids + if self._events_stream_cache.has_entity_changed(room_id, from_key) + ) + @defer.inlineCallbacks def get_room_events_stream_for_room(self, room_id, from_key, to_key, limit=0, order='DESC'): |