diff --git a/synapse/handlers/relations.py b/synapse/handlers/relations.py
index 0a0c6d938e..8e71dda970 100644
--- a/synapse/handlers/relations.py
+++ b/synapse/handlers/relations.py
@@ -17,7 +17,7 @@ from typing import TYPE_CHECKING, Dict, FrozenSet, Iterable, List, Optional, Tup
import attr
-from synapse.api.constants import RelationTypes
+from synapse.api.constants import EventTypes, RelationTypes
from synapse.api.errors import SynapseError
from synapse.events import EventBase, relation_from_event
from synapse.logging.opentracing import trace
@@ -75,6 +75,7 @@ class RelationsHandler:
self._clock = hs.get_clock()
self._event_handler = hs.get_event_handler()
self._event_serializer = hs.get_event_client_serializer()
+ self._event_creation_handler = hs.get_event_creation_handler()
async def get_relations(
self,
@@ -205,6 +206,59 @@ class RelationsHandler:
return related_events, next_token
+ async def redact_events_related_to(
+ self,
+ requester: Requester,
+ event_id: str,
+ initial_redaction_event: EventBase,
+ relation_types: List[str],
+ ) -> None:
+ """Redacts all events related to the given event ID with one of the given
+ relation types.
+
+ This method is expected to be called when redacting the event referred to by
+ the given event ID.
+
+ If an event cannot be redacted (e.g. because of insufficient permissions), log
+ the error and try to redact the next one.
+
+ Args:
+ requester: The requester to redact events on behalf of.
+ event_id: The event IDs to look and redact relations of.
+ initial_redaction_event: The redaction for the event referred to by
+ event_id.
+ relation_types: The types of relations to look for.
+
+ Raises:
+ ShadowBanError if the requester is shadow-banned
+ """
+ related_event_ids = (
+ await self._main_store.get_all_relations_for_event_with_types(
+ event_id, relation_types
+ )
+ )
+
+ for related_event_id in related_event_ids:
+ try:
+ await self._event_creation_handler.create_and_send_nonmember_event(
+ requester,
+ {
+ "type": EventTypes.Redaction,
+ "content": initial_redaction_event.content,
+ "room_id": initial_redaction_event.room_id,
+ "sender": requester.user.to_string(),
+ "redacts": related_event_id,
+ },
+ ratelimit=False,
+ )
+ except SynapseError as e:
+ logger.warning(
+ "Failed to redact event %s (related to event %s): %s",
+ related_event_id,
+ event_id,
+ e.msg,
+ )
+
async def get_annotations_for_event(
self,
event_id: str,
|
