diff --git a/synapse/federation/sender/__init__.py b/synapse/federation/sender/__init__.py
index 6d2f46318b..dbe303ed9b 100644
--- a/synapse/federation/sender/__init__.py
+++ b/synapse/federation/sender/__init__.py
@@ -15,7 +15,17 @@
import abc
import logging
from collections import OrderedDict
-from typing import TYPE_CHECKING, Dict, Hashable, Iterable, List, Optional, Set, Tuple
+from typing import (
+ TYPE_CHECKING,
+ Collection,
+ Dict,
+ Hashable,
+ Iterable,
+ List,
+ Optional,
+ Set,
+ Tuple,
+)
import attr
from prometheus_client import Counter
@@ -409,7 +419,7 @@ class FederationSender(AbstractFederationSender):
)
return
- destinations: Optional[Set[str]] = None
+ destinations: Optional[Collection[str]] = None
if not event.prev_event_ids():
# If there are no prev event IDs then the state is empty
# and so no remote servers in the room
@@ -444,7 +454,7 @@ class FederationSender(AbstractFederationSender):
)
return
- destinations = {
+ sharded_destinations = {
d
for d in destinations
if self._federation_shard_config.should_handle(
@@ -456,12 +466,12 @@ class FederationSender(AbstractFederationSender):
# If we are sending the event on behalf of another server
# then it already has the event and there is no reason to
# send the event to it.
- destinations.discard(send_on_behalf_of)
+ sharded_destinations.discard(send_on_behalf_of)
- logger.debug("Sending %s to %r", event, destinations)
+ logger.debug("Sending %s to %r", event, sharded_destinations)
- if destinations:
- await self._send_pdu(event, destinations)
+ if sharded_destinations:
+ await self._send_pdu(event, sharded_destinations)
now = self.clock.time_msec()
ts = await self.store.get_received_ts(event.event_id)
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