Merge pull request #6159 from matrix-org/erikj/cache_memberships

Cache room membership lookups in _get_joined_users_from_context
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Erik Johnston 2019-10-07 13:15:00 +01:00 committed by GitHub
commit 86f4705866
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2 changed files with 46 additions and 19 deletions

1
changelog.d/6159.misc Normal file
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@ -0,0 +1 @@
Add more caching to `_get_joined_users_from_context` DB query.

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@ -32,7 +32,7 @@ from synapse.storage.events_worker import EventsWorkerStore
from synapse.types import get_domain_from_id
from synapse.util.async_helpers import Linearizer
from synapse.util.caches import intern_string
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks, cachedList
from synapse.util.metrics import Measure
from synapse.util.stringutils import to_ascii
@ -572,25 +572,10 @@ class RoomMemberWorkerStore(EventsWorkerStore):
missing_member_event_ids.append(event_id)
if missing_member_event_ids:
rows = yield self._simple_select_many_batch(
table="room_memberships",
column="event_id",
iterable=missing_member_event_ids,
retcols=("user_id", "display_name", "avatar_url"),
keyvalues={"membership": Membership.JOIN},
batch_size=500,
desc="_get_joined_users_from_context",
)
users_in_room.update(
{
to_ascii(row["user_id"]): ProfileInfo(
avatar_url=to_ascii(row["avatar_url"]),
display_name=to_ascii(row["display_name"]),
)
for row in rows
}
event_to_memberships = yield self._get_joined_profiles_from_event_ids(
missing_member_event_ids
)
users_in_room.update((row for row in event_to_memberships.values() if row))
if event is not None and event.type == EventTypes.Member:
if event.membership == Membership.JOIN:
@ -602,6 +587,47 @@ class RoomMemberWorkerStore(EventsWorkerStore):
return users_in_room
@cached(max_entries=10000)
def _get_joined_profile_from_event_id(self, event_id):
raise NotImplementedError()
@cachedList(
cached_method_name="_get_joined_profile_from_event_id",
list_name="event_ids",
inlineCallbacks=True,
)
def _get_joined_profiles_from_event_ids(self, event_ids):
"""For given set of member event_ids check if they point to a join
event and if so return the associated user and profile info.
Args:
event_ids (Iterable[str]): The member event IDs to lookup
Returns:
Deferred[dict[str, Tuple[str, ProfileInfo]|None]]: Map from event ID
to `user_id` and ProfileInfo (or None if not join event).
"""
rows = yield self._simple_select_many_batch(
table="room_memberships",
column="event_id",
iterable=event_ids,
retcols=("user_id", "display_name", "avatar_url", "event_id"),
keyvalues={"membership": Membership.JOIN},
batch_size=500,
desc="_get_membership_from_event_ids",
)
return {
row["event_id"]: (
row["user_id"],
ProfileInfo(
avatar_url=row["avatar_url"], display_name=row["display_name"]
),
)
for row in rows
}
@cachedInlineCallbacks(max_entries=10000)
def is_host_joined(self, room_id, host):
if "%" in host or "_" in host: