diff --git a/synapse/federation/transaction_queue.py b/synapse/federation/transaction_queue.py
index dee387eb7f..695f1a7375 100644
--- a/synapse/federation/transaction_queue.py
+++ b/synapse/federation/transaction_queue.py
@@ -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
diff --git a/synapse/state.py b/synapse/state.py
index f6b83d888a..f8b18a4a2d 100644
--- a/synapse/state.py
+++ b/synapse/state.py
@@ -176,6 +176,17 @@ 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_user_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.
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index 7ad2198d96..1c0fa8a680 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -482,6 +482,44 @@ 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=3)
+ 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(host)
+
+ defer.returnValue(joined_hosts)
+
@defer.inlineCallbacks
def _background_add_membership_profile(self, progress, batch_size):
target_min_stream_id = progress.get(
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