diff options
Diffstat (limited to 'synapse/storage')
| -rw-r--r-- | synapse/storage/events.py | 2 | ||||
| -rw-r--r-- | synapse/storage/state.py | 66 |
2 files changed, 65 insertions, 3 deletions
diff --git a/synapse/storage/events.py b/synapse/storage/events.py index 135af54fa9..025a7fb6d9 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -1911,7 +1911,7 @@ class EventsStore(EventFederationStore, EventsWorkerStore, BackgroundUpdateStore max_depth = max(row[0] for row in rows) if max_depth <= token.topological: - # We need to ensure we don't delete all the events from the datanase + # We need to ensure we don't delete all the events from the database # otherwise we wouldn't be able to send any events (due to not # having any backwards extremeties) raise SynapseError( diff --git a/synapse/storage/state.py b/synapse/storage/state.py index 17b14d464b..754dfa6973 100644 --- a/synapse/storage/state.py +++ b/synapse/storage/state.py @@ -116,6 +116,69 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore): _get_current_state_ids_txn, ) + # FIXME: how should this be cached? + def get_filtered_current_state_ids(self, room_id, types, filtered_types=None): + """Get the current state event of a given type for a room based on the + current_state_events table. This may not be as up-to-date as the result + of doing a fresh state resolution as per state_handler.get_current_state + Args: + room_id (str) + types (list[(Str, (Str|None))]): List of (type, state_key) tuples + which are used to filter the state fetched. `state_key` may be + None, which matches any `state_key` + filtered_types (list[Str]|None): List of types to apply the above filter to. + Returns: + deferred: dict of (type, state_key) -> event + """ + + include_other_types = False if filtered_types is None else True + + def _get_filtered_current_state_ids_txn(txn): + results = {} + sql = """SELECT type, state_key, event_id FROM current_state_events + WHERE room_id = ? %s""" + # Turns out that postgres doesn't like doing a list of OR's and + # is about 1000x slower, so we just issue a query for each specific + # type seperately. + if types: + clause_to_args = [ + ( + "AND type = ? AND state_key = ?", + (etype, state_key) + ) if state_key is not None else ( + "AND type = ?", + (etype,) + ) + for etype, state_key in types + ] + + if include_other_types: + unique_types = set(filtered_types) + clause_to_args.append( + ( + "AND type <> ? " * len(unique_types), + list(unique_types) + ) + ) + else: + # If types is None we fetch all the state, and so just use an + # empty where clause with no extra args. + clause_to_args = [("", [])] + for where_clause, where_args in clause_to_args: + args = [room_id] + args.extend(where_args) + txn.execute(sql % (where_clause,), args) + for row in txn: + typ, state_key, event_id = row + key = (intern_string(typ), intern_string(state_key)) + results[key] = event_id + return results + + return self.runInteraction( + "get_filtered_current_state_ids", + _get_filtered_current_state_ids_txn, + ) + @cached(max_entries=10000, iterable=True) def get_state_group_delta(self, state_group): """Given a state group try to return a previous group and a delta between @@ -389,8 +452,7 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore): If None, `types` filtering is applied to all events. Returns: - deferred: A list of dicts corresponding to the event_ids given. - The dicts are mappings from (type, state_key) -> state_events + deferred: A dict of (event_id) -> (type, state_key) -> [state_events] """ event_to_groups = yield self._get_state_group_for_events( event_ids, |