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Some house keeping on maybe_backfill() functions (#15709)

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Eric Eastwood 2023-06-05 23:38:52 -05:00 committed by GitHub
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1
changelog.d/15709.misc Normal file
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@ -0,0 +1 @@
Update docstring and traces on `maybe_backfill()` functions.

17
synapse/handlers/federation.py
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@ -200,6 +200,7 @@ class FederationHandler:
) )
@trace @trace
@tag_args
async def maybe_backfill( async def maybe_backfill(
self, room_id: str, current_depth: int, limit: int self, room_id: str, current_depth: int, limit: int
) -> bool: ) -> bool:
@ -214,6 +215,9 @@ class FederationHandler:
limit: The number of events that the pagination request will limit: The number of events that the pagination request will
return. This is used as part of the heuristic to decide if we return. This is used as part of the heuristic to decide if we
should back paginate. should back paginate.
Returns:
True if we actually tried to backfill something, otherwise False.
""" """
# Starting the processing time here so we can include the room backfill # Starting the processing time here so we can include the room backfill
# linearizer lock queue in the timing # linearizer lock queue in the timing
@ -227,6 +231,8 @@ class FederationHandler:
processing_start_time=processing_start_time, processing_start_time=processing_start_time,
) )
@trace
@tag_args
async def _maybe_backfill_inner( async def _maybe_backfill_inner(
self, self,
room_id: str, room_id: str,
@ -247,6 +253,9 @@ class FederationHandler:
limit: The max number of events to request from the remote federated server. limit: The max number of events to request from the remote federated server.
processing_start_time: The time when `maybe_backfill` started processing. processing_start_time: The time when `maybe_backfill` started processing.
Only used for timing. If `None`, no timing observation will be made. Only used for timing. If `None`, no timing observation will be made.
Returns:
True if we actually tried to backfill something, otherwise False.
""" """
backwards_extremities = [ backwards_extremities = [
_BackfillPoint(event_id, depth, _BackfillPointType.BACKWARDS_EXTREMITY) _BackfillPoint(event_id, depth, _BackfillPointType.BACKWARDS_EXTREMITY)
@ -302,6 +311,14 @@ class FederationHandler:
len(sorted_backfill_points), len(sorted_backfill_points),
sorted_backfill_points, sorted_backfill_points,
) )
set_tag(
SynapseTags.RESULT_PREFIX + "sorted_backfill_points",
str(sorted_backfill_points),
)
set_tag(
SynapseTags.RESULT_PREFIX + "sorted_backfill_points.length",
str(len(sorted_backfill_points)),
)
# If we have no backfill points lower than the `current_depth` then # If we have no backfill points lower than the `current_depth` then
# either we can a) bail or b) still attempt to backfill. We opt to try # either we can a) bail or b) still attempt to backfill. We opt to try