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Instrument the federation/backfill part of /messages (#13489)

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Instrument the federation/backfill part of `/messages` so it's easier to follow what's going on in Jaeger when viewing a trace.

Split out from https://github.com/matrix-org/synapse/pull/13440

Follow-up from https://github.com/matrix-org/synapse/pull/13368

Part of https://github.com/matrix-org/synapse/issues/13356
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Eric Eastwood 2022-08-16 12:39:40 -05:00 • committed by GitHub
parent 5ace5d7b15
commit 0a4efbc1dd
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11 changed files with 220 additions and 33 deletions
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10
synapse/handlers/federation.py
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@ -59,7 +59,7 @@ from synapse.events.validator import EventValidator
from synapse.federation.federation_client import InvalidResponseError
from synapse.http.servlet import assert_params_in_dict
from synapse.logging.context import nested_logging_context
from synapse.logging.opentracing import tag_args, trace
from synapse.logging.opentracing import SynapseTags, set_tag, tag_args, trace
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.module_api import NOT_SPAM
from synapse.replication.http.federation import (
@ -370,6 +370,14 @@ class FederationHandler:
logger.debug(
"_maybe_backfill_inner: extremities_to_request %s", extremities_to_request
)
set_tag(
SynapseTags.RESULT_PREFIX + "extremities_to_request",
str(extremities_to_request),
)
set_tag(
SynapseTags.RESULT_PREFIX + "extremities_to_request.length",
str(len(extremities_to_request)),
)
# Now we need to decide which hosts to hit first.