Clarify that unit must be a suffix for metric names for Prometheus #4057
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Thanks @dashpole! |
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I found this confusion while reviewing open-telemetry/opentelemetry-dotnet#5646 (comment). The intention is for unit to be added in the same fashion for both OpenMetrics and non-OpenMetrics names.
Before this change, the name
seconds_before_my_birthdaywould not have a unit suffix appended. While this is a conceivable name, it isn't compliant with OpenMetrics, which is the intention of the spec. Instead, it needs to be changed toseconds_before_my_birthday_secondsto be compliant with the OpenMetrics spec.This change will prevent Exporters from needing to special-case unit handling for OpenMetrics vs non-OpenMetrics.
@open-telemetry/wg-prometheus @reyang @robertcoltheart