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Merge pull request #2809 from matrix-org/rav/metrics_errors

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better exception logging in callbackmetrics
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Richard van der Hoff 2018-01-18 11:46:37 +00:00 committed by GitHub
commit d6af5512bb
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1 changed files with 8 additions and 1 deletions
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7
synapse/metrics/metric.py
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@ -15,6 +15,9 @@
from itertools import chain from itertools import chain
import logging
logger = logging.getLogger(__name__)
def flatten(items): def flatten(items):
@ -153,7 +156,11 @@ class CallbackMetric(BaseMetric):
self.callback = callback self.callback = callback
def render(self): def render(self):
try:
value = self.callback() value = self.callback()
except Exception:
logger.exception("Failed to render %s", self.name)
return ["# FAILED to render " + self.name]
if self.is_scalar(): if self.is_scalar():
return list(self._render_for_labels([], value)) return list(self._render_for_labels([], value))