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Various opentracing enhancements (#11619)

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* Wrap `auth.get_user_by_req` in an opentracing span

give `get_user_by_req` its own opentracing span, since it can result in a
non-trivial number of sub-spans which it is useful to group together.

This requires a bit of reorganisation because it also sets some tags (and may
force tracing) on the servlet span.

* Emit opentracing span for encoding json responses

This can be a significant time sink.

* Rename all sync spans with a prefix

* Write an opentracing span for encoding sync response

* opentracing span to group generate_room_entries

* opentracing spans within sync.encode_response

* changelog

* Use the `trace` decorator instead of context managers
This commit is contained in:
Richard van der Hoff 2021-12-21 11:10:36 +00:00 • committed by GitHub
parent dd47788752
commit 2215954147
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5 changed files with 65 additions and 21 deletions
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7
synapse/handlers/sync.py
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@ -421,7 +421,7 @@ class SyncHandler:
span to track the sync. See `generate_sync_result` for the next part of your
indoctrination.
"""
with start_active_span("current_sync_for_user"):
with start_active_span("sync.current_sync_for_user"):
log_kv({"since_token": since_token})
sync_result = await self.generate_sync_result(
sync_config, since_token, full_state
@ -1585,7 +1585,8 @@ class SyncHandler:
)
logger.debug("Generated room entry for %s", room_entry.room_id)
await concurrently_execute(handle_room_entries, room_entries, 10)
with start_active_span("sync.generate_room_entries"):
await concurrently_execute(handle_room_entries, room_entries, 10)
sync_result_builder.invited.extend(invited)
sync_result_builder.knocked.extend(knocked)
@ -2045,7 +2046,7 @@ class SyncHandler:
since_token = room_builder.since_token
upto_token = room_builder.upto_token
with start_active_span("generate_room_entry"):
with start_active_span("sync.generate_room_entry"):
set_tag("room_id", room_id)
log_kv({"events": len(events or ())})