Merge pull request #2174 from matrix-org/erikj/current_cache_hosts

Add cache for get_current_hosts_in_room
This commit is contained in:
Erik Johnston 2017-05-05 10:15:24 +01:00 committed by GitHub
commit 8af4569583
4 changed files with 54 additions and 5 deletions

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@ -24,7 +24,6 @@ from synapse.util.async import run_on_reactor
from synapse.util.logcontext import preserve_context_over_fn, preserve_fn
from synapse.util.retryutils import NotRetryingDestination, get_retry_limiter
from synapse.util.metrics import measure_func
from synapse.types import get_domain_from_id
from synapse.handlers.presence import format_user_presence_state, get_interested_remotes
import synapse.metrics
@ -183,15 +182,12 @@ class TransactionQueue(object):
# Otherwise if the last member on a server in a room is
# banned then it won't receive the event because it won't
# be in the room after the ban.
users_in_room = yield self.state.get_current_user_in_room(
destinations = yield self.state.get_current_hosts_in_room(
event.room_id, latest_event_ids=[
prev_id for prev_id, _ in event.prev_events
],
)
destinations = set(
get_domain_from_id(user_id) for user_id in users_in_room
)
if send_on_behalf_of is not None:
# If we are sending the event on behalf of another server
# then it already has the event and there is no reason to

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@ -144,6 +144,9 @@ class SlavedEventStore(BaseSlavedStore):
RoomMemberStore.__dict__["_get_joined_users_from_context"]
)
get_joined_hosts = DataStore.get_joined_hosts.__func__
_get_joined_hosts = RoomMemberStore.__dict__["_get_joined_hosts"]
get_recent_events_for_room = DataStore.get_recent_events_for_room.__func__
get_room_events_stream_for_rooms = (
DataStore.get_room_events_stream_for_rooms.__func__

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@ -175,6 +175,17 @@ class StateHandler(object):
)
defer.returnValue(joined_users)
@defer.inlineCallbacks
def get_current_hosts_in_room(self, room_id, latest_event_ids=None):
if not latest_event_ids:
latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id)
logger.debug("calling resolve_state_groups from get_current_hosts_in_room")
entry = yield self.resolve_state_groups(room_id, latest_event_ids)
joined_hosts = yield self.store.get_joined_hosts(
room_id, entry.state_id, entry.state
)
defer.returnValue(joined_hosts)
@defer.inlineCallbacks
def compute_event_context(self, event, old_state=None):
"""Build an EventContext structure for the event.

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@ -18,6 +18,7 @@ from twisted.internet import defer
from collections import namedtuple
from ._base import SQLBaseStore
from synapse.util.caches import intern_string
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
from synapse.util.stringutils import to_ascii
@ -482,6 +483,44 @@ class RoomMemberStore(SQLBaseStore):
defer.returnValue(False)
def get_joined_hosts(self, room_id, state_group, state_ids):
if not state_group:
# If state_group is None it means it has yet to be assigned a
# state group, i.e. we need to make sure that calls with a state_group
# of None don't hit previous cached calls with a None state_group.
# To do this we set the state_group to a new object as object() != object()
state_group = object()
return self._get_joined_hosts(
room_id, state_group, state_ids
)
@cachedInlineCallbacks(num_args=2, max_entries=10000, iterable=True)
def _get_joined_hosts(self, room_id, state_group, current_state_ids):
# We don't use `state_group`, its there so that we can cache based
# on it. However, its important that its never None, since two current_state's
# with a state_group of None are likely to be different.
# See bulk_get_push_rules_for_room for how we work around this.
assert state_group is not None
joined_hosts = set()
for (etype, state_key), event_id in current_state_ids.items():
if etype == EventTypes.Member:
try:
host = get_domain_from_id(state_key)
except:
logger.warn("state_key not user_id: %s", state_key)
continue
if host in joined_hosts:
continue
event = yield self.get_event(event_id, allow_none=True)
if event and event.content["membership"] == Membership.JOIN:
joined_hosts.add(intern_string(host))
defer.returnValue(joined_hosts)
@defer.inlineCallbacks
def _background_add_membership_profile(self, progress, batch_size):
target_min_stream_id = progress.get(