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Improve tracing for to device messages (#9686)

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Erik Johnston 2021-04-01 17:08:21 +01:00 • committed by GitHub
parent bb0fe02a52
commit 33548f37aa
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7 changed files with 102 additions and 19 deletions
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45
synapse/notifier.py
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@ -39,6 +39,7 @@ from synapse.api.errors import AuthError
from synapse.events import EventBase
from synapse.handlers.presence import format_user_presence_state
from synapse.logging.context import PreserveLoggingContext
from synapse.logging.opentracing import log_kv, start_active_span
from synapse.logging.utils import log_function
from synapse.metrics import LaterGauge
from synapse.streams.config import PaginationConfig
@ -136,6 +137,15 @@ class _NotifierUserStream:
self.last_notified_ms = time_now_ms
noify_deferred = self.notify_deferred
log_kv(
{
"notify": self.user_id,
"stream": stream_key,
"stream_id": stream_id,
"listeners": self.count_listeners(),
}
)
users_woken_by_stream_counter.labels(stream_key).inc()
with PreserveLoggingContext():
@ -404,6 +414,13 @@ class Notifier:
with Measure(self.clock, "on_new_event"):
user_streams = set()
log_kv(
{
"waking_up_explicit_users": len(users),
"waking_up_explicit_rooms": len(rooms),
}
)
for user in users:
user_stream = self.user_to_user_stream.get(str(user))
if user_stream is not None:
@ -476,12 +493,34 @@ class Notifier:
(end_time - now) / 1000.0,
self.hs.get_reactor(),
)
with PreserveLoggingContext():
await listener.deferred
with start_active_span("wait_for_events.deferred"):
log_kv(
{
"wait_for_events": "sleep",
"token": prev_token,
}
)
with PreserveLoggingContext():
await listener.deferred
log_kv(
{
"wait_for_events": "woken",
"token": user_stream.current_token,
}
)
current_token = user_stream.current_token
result = await callback(prev_token, current_token)
log_kv(
{
"wait_for_events": "result",
"result": bool(result),
}
)
if result:
break
@ -489,8 +528,10 @@ class Notifier:
# has happened between the old prev_token and the current_token
prev_token = current_token
except defer.TimeoutError:
log_kv({"wait_for_events": "timeout"})
break
except defer.CancelledError:
log_kv({"wait_for_events": "cancelled"})
break
if result is None: