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Fix incorrect thread summaries when the latest event is edited. (#11992)

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If the latest event in a thread was edited than the original
event content was included in bundled aggregation for
threads instead of the edited event content.
This commit is contained in:
Patrick Cloke 2022-02-15 08:26:57 -05:00 • committed by GitHub
parent 85e24d9d2b
commit 45f45404de
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 107 additions and 31 deletions
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69
synapse/events/utils.py
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@ -425,6 +425,33 @@ class EventClientSerializer:
return serialized_event
def _apply_edit(
self, orig_event: EventBase, serialized_event: JsonDict, edit: EventBase
) -> None:
"""Replace the content, preserving existing relations of the serialized event.
Args:
orig_event: The original event.
serialized_event: The original event, serialized. This is modified.
edit: The event which edits the above.
"""
# Ensure we take copies of the edit content, otherwise we risk modifying
# the original event.
edit_content = edit.content.copy()
# Unfreeze the event content if necessary, so that we may modify it below
edit_content = unfreeze(edit_content)
serialized_event["content"] = edit_content.get("m.new_content", {})
# Check for existing relations
relates_to = orig_event.content.get("m.relates_to")
if relates_to:
# Keep the relations, ensuring we use a dict copy of the original
serialized_event["content"]["m.relates_to"] = relates_to.copy()
else:
serialized_event["content"].pop("m.relates_to", None)
def _inject_bundled_aggregations(
self,
event: EventBase,
@ -450,26 +477,11 @@ class EventClientSerializer:
serialized_aggregations[RelationTypes.REFERENCE] = aggregations.references
if aggregations.replace:
# If there is an edit replace the content, preserving existing
# relations.
# If there is an edit, apply it to the event.
edit = aggregations.replace
self._apply_edit(event, serialized_event, edit)
# Ensure we take copies of the edit content, otherwise we risk modifying
# the original event.
edit_content = edit.content.copy()
# Unfreeze the event content if necessary, so that we may modify it below
edit_content = unfreeze(edit_content)
serialized_event["content"] = edit_content.get("m.new_content", {})
# Check for existing relations
relates_to = event.content.get("m.relates_to")
if relates_to:
# Keep the relations, ensuring we use a dict copy of the original
serialized_event["content"]["m.relates_to"] = relates_to.copy()
else:
serialized_event["content"].pop("m.relates_to", None)
# Include information about it in the relations dict.
serialized_aggregations[RelationTypes.REPLACE] = {
"event_id": edit.event_id,
"origin_server_ts": edit.origin_server_ts,
@ -478,13 +490,22 @@ class EventClientSerializer:
# If this event is the start of a thread, include a summary of the replies.
if aggregations.thread:
thread = aggregations.thread
# Don't bundle aggregations as this could recurse forever.
serialized_latest_event = self.serialize_event(
thread.latest_event, time_now, bundle_aggregations=None
)
# Manually apply an edit, if one exists.
if thread.latest_edit:
self._apply_edit(
thread.latest_event, serialized_latest_event, thread.latest_edit
)
serialized_aggregations[RelationTypes.THREAD] = {
# Don't bundle aggregations as this could recurse forever.
"latest_event": self.serialize_event(
aggregations.thread.latest_event, time_now, bundle_aggregations=None
),
"count": aggregations.thread.count,
"current_user_participated": aggregations.thread.current_user_participated,
"latest_event": serialized_latest_event,
"count": thread.count,
"current_user_participated": thread.current_user_participated,
}
# Include the bundled aggregations in the event.