[sdk-metrics] Add experimental envvar for setting ExemplarFilter for histograms#5611
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cijothomas
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| | Environment variable | Description | Notes | | ||
| | -------------------------- | -------------------------------------------------- |-------| | ||
| | `OTEL_METRICS_EXEMPLAR_FILTER` | Sets the default `ExemplarFilter` to use for all metrics. | Added in `1.9.0` | | ||
| | `OTEL_DOTNET_EXPERIMENTAL_METRICS_EXEMPLAR_FILTER_HISTOGRAMS` | Sets the default `ExemplarFilter` to use for histogram metrics. If not set than `OTEL_METRICS_EXEMPLAR_FILTER` also applies to histograms. | Experimental key (may be removed or changed in the future). Added in `1.9.0` | |
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| | `OTEL_DOTNET_EXPERIMENTAL_METRICS_EXEMPLAR_FILTER_HISTOGRAMS` | Sets the default `ExemplarFilter` to use for histogram metrics. If not set than `OTEL_METRICS_EXEMPLAR_FILTER` also applies to histograms. | Experimental key (may be removed or changed in the future). Added in `1.9.0` | | |
| | `OTEL_DOTNET_EXPERIMENTAL_METRICS_EXEMPLAR_FILTER_HISTOGRAMS` | Sets the default `ExemplarFilter` to use for histogram metrics. If not set, then `OTEL_METRICS_EXEMPLAR_FILTER` also applies to histograms. | Experimental key (may be removed or changed in the future). Added in `1.9.0` | |
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I changed this a bit for @vishweshbankwar's comment above.
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…deBlanch/opentelemetry-dotnet into sdk-exemplarfilter-histograms
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| ExemplarFilterType? exemplarFilter; | ||
| if (!TryParseExemplarFilterFromConfigurationValue(configValue, out var exemplarFilter)) | ||
| { | ||
| OpenTelemetrySdkEventSource.Log.MeterProviderSdkEvent($"Exemplar filter configuration was found but the value '{configValue}' is invalid and will be ignored."); |
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should we be showing string interpolation in our own logging.. though this is just startup only!
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left couple nits about using dedicated internal logs about which ExemplarFilter is finally enabled.
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Relates to #2527
Changes
OTEL_DOTNET_EXPERIMENTAL_METRICS_EXEMPLAR_FILTER_HISTOGRAMSwhich can be used to set the default SDKExemplarFilterfor histogram metrics.Merge requirement checklist
CHANGELOG.mdfiles updated for non-trivial changes