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Add debug logging when we enter/exit Measure block #10183

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erikjohnston merged 2 commits into from
Jun 16, 2021
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Add debug logging when we enter/exit Measure block #10183

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Add debug logging when we enter/exit Measure block
erikjohnston Jun 16, 2021
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erikjohnston Jun 16, 2021
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1 change: 1 addition & 0 deletions changelog.d/10183.misc
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Add debug logging for when we enter and exit `Measure` blocks.
5 changes: 5 additions & 0 deletions synapse/util/metrics.py
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Expand Up @@ -133,12 +133,17 @@ def __enter__(self) -> "Measure":
self.start = self.clock.time()
self._logging_context.__enter__()
in_flight.register((self.name,), self._update_in_flight)

logger.debug("Entering block %s", self.name)

return self

def __exit__(self, exc_type, exc_val, exc_tb):
if self.start is None:
raise RuntimeError("Measure() block exited without being entered")

logger.debug("Exiting block %s", self.name)

duration = self.clock.time() - self.start
usage = self.get_resource_usage()

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