diff --git a/synapse/storage/state.py b/synapse/storage/state.py
index 0e8fa93e1f..b1d461fef5 100644
--- a/synapse/storage/state.py
+++ b/synapse/storage/state.py
@@ -44,11 +44,7 @@ class StateStore(SQLBaseStore):
"""
@defer.inlineCallbacks
- def get_state_groups(self, room_id, event_ids):
- """ Get the state groups for the given list of event_ids
-
- The return value is a dict mapping group names to lists of events.
- """
+ def get_state_groups_ids(self, room_id, event_ids):
if not event_ids:
defer.returnValue({})
@@ -59,9 +55,32 @@ class StateStore(SQLBaseStore):
groups = set(event_to_groups.values())
group_to_state = yield self._get_state_for_groups(groups)
+ defer.returnValue(group_to_state)
+
+ @defer.inlineCallbacks
+ def get_state_groups(self, room_id, event_ids):
+ """ Get the state groups for the given list of event_ids
+
+ The return value is a dict mapping group names to lists of events.
+ """
+ if not event_ids:
+ defer.returnValue({})
+
+ group_to_ids = yield self.get_state_groups_ids(room_id, event_ids)
+
+ state_event_map = yield self.get_events(
+ [
+ ev_id for group_ids in group_to_ids.values()
+ for ev_id in group_ids.values()
+ ],
+ get_prev_content=False
+ )
+
defer.returnValue({
- group: state_map.values()
- for group, state_map in group_to_state.items()
+ group: [
+ state_event_map[v] for v in event_id_map.values() if v in state_event_map
+ ]
+ for group, event_id_map in group_to_ids.items()
})
def _store_mult_state_groups_txn(self, txn, events_and_contexts):
@@ -70,17 +89,17 @@ class StateStore(SQLBaseStore):
if event.internal_metadata.is_outlier():
continue
- if context.current_state is None:
+ if context.current_state_ids is None:
continue
if context.state_group is not None:
state_groups[event.event_id] = context.state_group
continue
- state_events = dict(context.current_state)
+ state_event_ids = dict(context.current_state_ids)
if event.is_state():
- state_events[(event.type, event.state_key)] = event
+ state_event_ids[(event.type, event.state_key)] = event.event_id
state_group = context.new_state_group_id
@@ -100,12 +119,12 @@ class StateStore(SQLBaseStore):
values=[
{
"state_group": state_group,
- "room_id": state.room_id,
- "type": state.type,
- "state_key": state.state_key,
- "event_id": state.event_id,
+ "room_id": event.room_id,
+ "type": key[0],
+ "state_key": key[1],
+ "event_id": state_id,
}
- for state in state_events.values()
+ for key, state_id in state_event_ids.items()
],
)
state_groups[event.event_id] = state_group
@@ -248,6 +267,31 @@ class StateStore(SQLBaseStore):
groups = set(event_to_groups.values())
group_to_state = yield self._get_state_for_groups(groups, types)
+ state_event_map = yield self.get_events(
+ [ev_id for sd in group_to_state.values() for ev_id in sd.values()],
+ get_prev_content=False
+ )
+
+ event_to_state = {
+ event_id: {
+ k: state_event_map[v]
+ for k, v in group_to_state[group].items()
+ if v in state_event_map
+ }
+ for event_id, group in event_to_groups.items()
+ }
+
+ defer.returnValue({event: event_to_state[event] for event in event_ids})
+
+ @defer.inlineCallbacks
+ def get_state_ids_for_events(self, event_ids, types):
+ event_to_groups = yield self._get_state_group_for_events(
+ event_ids,
+ )
+
+ groups = set(event_to_groups.values())
+ group_to_state = yield self._get_state_for_groups(groups, types)
+
event_to_state = {
event_id: group_to_state[group]
for event_id, group in event_to_groups.items()
@@ -272,6 +316,23 @@ class StateStore(SQLBaseStore):
state_map = yield self.get_state_for_events([event_id], types)
defer.returnValue(state_map[event_id])
+ @defer.inlineCallbacks
+ def get_state_ids_for_event(self, event_id, types=None):
+ """
+ Get the state dict corresponding to a particular event
+
+ Args:
+ event_id(str): event whose state should be returned
+ types(list[(str, str)]|None): List of (type, state_key) tuples
+ which are used to filter the state fetched. May be None, which
+ matches any key
+
+ Returns:
+ A deferred dict from (type, state_key) -> state_event
+ """
+ state_map = yield self.get_state_ids_for_events([event_id], types)
+ defer.returnValue(state_map[event_id])
+
@cached(num_args=2, max_entries=10000)
def _get_state_group_for_event(self, room_id, event_id):
return self._simple_select_one_onecol(
@@ -428,20 +489,13 @@ class StateStore(SQLBaseStore):
full=(types is None),
)
- state_events = yield self._get_events(
- [ev_id for sd in results.values() for ev_id in sd.values()],
- get_prev_content=False
- )
-
- state_events = {e.event_id: e for e in state_events}
-
# Remove all the entries with None values. The None values were just
# used for bookkeeping in the cache.
for group, state_dict in results.items():
results[group] = {
- key: state_events[event_id]
+ key: event_id
for key, event_id in state_dict.items()
- if event_id and event_id in state_events
+ if event_id
}
defer.returnValue(results)
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