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https://github.com/element-hq/synapse
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Log which cache is throwing exceptions
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commit
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1 changed files with 17 additions and 10 deletions
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@ -13,6 +13,7 @@
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import os
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import six
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@ -20,6 +21,8 @@ from six.moves import intern
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from prometheus_client.core import REGISTRY, Gauge, GaugeMetricFamily
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logger = logging.getLogger(__name__)
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CACHE_SIZE_FACTOR = float(os.environ.get("SYNAPSE_CACHE_FACTOR", 0.5))
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@ -76,6 +79,7 @@ def register_cache(cache_type, cache_name, cache):
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return []
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def collect(self):
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try:
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if cache_type == "response_cache":
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response_cache_size.labels(cache_name).set(len(cache))
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response_cache_hits.labels(cache_name).set(self.hits)
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@ -86,6 +90,9 @@ def register_cache(cache_type, cache_name, cache):
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cache_hits.labels(cache_name).set(self.hits)
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cache_evicted.labels(cache_name).set(self.evicted_size)
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cache_total.labels(cache_name).set(self.hits + self.misses)
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except Exception as e:
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logger.warn("Error calculating metrics for %s: %s", cache_name, e)
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raise
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yield GaugeMetricFamily("__unused", "")
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