diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/events/utils.py | 28 | ||||
| -rw-r--r-- | synapse/replication/slave/storage/events.py | 1 | ||||
| -rw-r--r-- | synapse/storage/relations.py | 60 |
3 files changed, 84 insertions, 5 deletions
diff --git a/synapse/events/utils.py b/synapse/events/utils.py index 16d0c64372..bf3c8f8dc1 100644 --- a/synapse/events/utils.py +++ b/synapse/events/utils.py @@ -346,7 +346,7 @@ class EventClientSerializer(object): defer.returnValue(event) event_id = event.event_id - event = serialize_event(event, time_now, **kwargs) + serialized_event = serialize_event(event, time_now, **kwargs) # If MSC1849 is enabled then we need to look if thre are any relations # we need to bundle in with the event @@ -359,14 +359,34 @@ class EventClientSerializer(object): ) if annotations.chunk: - r = event["unsigned"].setdefault("m.relations", {}) + r = serialized_event["unsigned"].setdefault("m.relations", {}) r[RelationTypes.ANNOTATION] = annotations.to_dict() if references.chunk: - r = event["unsigned"].setdefault("m.relations", {}) + r = serialized_event["unsigned"].setdefault("m.relations", {}) r[RelationTypes.REFERENCES] = references.to_dict() - defer.returnValue(event) + edit = None + if event.type == EventTypes.Message: + edit = yield self.store.get_applicable_edit(event_id) + + if edit: + # If there is an edit replace the content, preserving existing + # relations. + + relations = event.content.get("m.relates_to") + serialized_event["content"] = edit.content.get("m.new_content", {}) + if relations: + serialized_event["content"]["m.relates_to"] = relations + else: + serialized_event["content"].pop("m.relates_to", None) + + r = serialized_event["unsigned"].setdefault("m.relations", {}) + r[RelationTypes.REPLACES] = { + "event_id": edit.event_id, + } + + defer.returnValue(serialized_event) def serialize_events(self, events, time_now, **kwargs): """Serializes multiple events. diff --git a/synapse/replication/slave/storage/events.py b/synapse/replication/slave/storage/events.py index 797450bc66..a3952506c1 100644 --- a/synapse/replication/slave/storage/events.py +++ b/synapse/replication/slave/storage/events.py @@ -143,3 +143,4 @@ class SlavedEventStore(EventFederationWorkerStore, if relates_to: self.get_relations_for_event.invalidate_many((relates_to,)) self.get_aggregation_groups_for_event.invalidate_many((relates_to,)) + self.get_applicable_edit.invalidate((relates_to,)) diff --git a/synapse/storage/relations.py b/synapse/storage/relations.py index de67e305a1..6e216066ab 100644 --- a/synapse/storage/relations.py +++ b/synapse/storage/relations.py @@ -17,11 +17,13 @@ import logging import attr +from twisted.internet import defer + from synapse.api.constants import RelationTypes from synapse.api.errors import SynapseError from synapse.storage._base import SQLBaseStore from synapse.storage.stream import generate_pagination_where_clause -from synapse.util.caches.descriptors import cached +from synapse.util.caches.descriptors import cached, cachedInlineCallbacks logger = logging.getLogger(__name__) @@ -312,6 +314,59 @@ class RelationsWorkerStore(SQLBaseStore): "get_aggregation_groups_for_event", _get_aggregation_groups_for_event_txn ) + @cachedInlineCallbacks() + def get_applicable_edit(self, event_id): + """Get the most recent edit (if any) that has happened for the given + event. + + Correctly handles checking whether edits were allowed to happen. + + Args: + event_id (str): The original event ID + + Returns: + Deferred[EventBase|None]: Returns the most recent edit, if any. + """ + + # We only allow edits for `m.room.message` events that have the same sender + # and event type. We can't assert these things during regular event auth so + # we have to do the checks post hoc. + + # Fetches latest edit that has the same type and sender as the + # original, and is an `m.room.message`. + sql = """ + SELECT edit.event_id FROM events AS edit + INNER JOIN event_relations USING (event_id) + INNER JOIN events AS original ON + original.event_id = relates_to_id + AND edit.type = original.type + AND edit.sender = original.sender + WHERE + relates_to_id = ? + AND relation_type = ? + AND edit.type = 'm.room.message' + ORDER by edit.origin_server_ts DESC, edit.event_id DESC + LIMIT 1 + """ + + def _get_applicable_edit_txn(txn): + txn.execute( + sql, (event_id, RelationTypes.REPLACES,) + ) + row = txn.fetchone() + if row: + return row[0] + + edit_id = yield self.runInteraction( + "get_applicable_edit", _get_applicable_edit_txn + ) + + if not edit_id: + return + + edit_event = yield self.get_event(edit_id, allow_none=True) + defer.returnValue(edit_event) + class RelationsStore(RelationsWorkerStore): def _handle_event_relations(self, txn, event): @@ -357,3 +412,6 @@ class RelationsStore(RelationsWorkerStore): txn.call_after( self.get_aggregation_groups_for_event.invalidate_many, (parent_id,) ) + + if rel_type == RelationTypes.REPLACES: + txn.call_after(self.get_applicable_edit.invalidate, (parent_id,)) |