From 0ca459ea334ff86016bda241c0c823178789c215 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Wed, 25 Jul 2018 22:10:39 +0100 Subject: Basic support for room versioning This is the first tranche of support for room versioning. It includes: * setting the default room version in the config file * new room_version param on the createRoom API * storing the version of newly-created rooms in the m.room.create event * fishing the version of existing rooms out of the m.room.create event --- synapse/storage/state.py | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-) (limited to 'synapse/storage/state.py') diff --git a/synapse/storage/state.py b/synapse/storage/state.py index b27b3ae144..17b14d464b 100644 --- a/synapse/storage/state.py +++ b/synapse/storage/state.py @@ -21,15 +21,17 @@ from six.moves import range from twisted.internet import defer +from synapse.api.constants import EventTypes +from synapse.api.errors import NotFoundError +from synapse.storage._base import SQLBaseStore from synapse.storage.background_updates import BackgroundUpdateStore from synapse.storage.engines import PostgresEngine +from synapse.storage.events_worker import EventsWorkerStore from synapse.util.caches import get_cache_factor_for, intern_string from synapse.util.caches.descriptors import cached, cachedList from synapse.util.caches.dictionary_cache import DictionaryCache from synapse.util.stringutils import to_ascii -from ._base import SQLBaseStore - logger = logging.getLogger(__name__) @@ -46,7 +48,8 @@ class _GetStateGroupDelta(namedtuple("_GetStateGroupDelta", ("prev_group", "delt return len(self.delta_ids) if self.delta_ids else 0 -class StateGroupWorkerStore(SQLBaseStore): +# this inherits from EventsWorkerStore because it calls self.get_events +class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore): """The parts of StateGroupStore that can be called from workers. """ @@ -61,6 +64,30 @@ class StateGroupWorkerStore(SQLBaseStore): "*stateGroupCache*", 500000 * get_cache_factor_for("stateGroupCache") ) + @defer.inlineCallbacks + def get_room_version(self, room_id): + """Get the room_version of a given room + + Args: + room_id (str) + + Returns: + Deferred[str] + + Raises: + NotFoundError if the room is unknown + """ + # for now we do this by looking at the create event. We may want to cache this + # more intelligently in future. + state_ids = yield self.get_current_state_ids(room_id) + create_id = state_ids.get((EventTypes.Create, "")) + + if not create_id: + raise NotFoundError("Unknown room") + + create_event = yield self.get_event(create_id) + defer.returnValue(create_event.content.get("room_version", "1")) + @cached(max_entries=100000, iterable=True) def get_current_state_ids(self, room_id): """Get the current state event ids for a room based on the -- cgit 1.4.1