diff --git a/metrics/resetting_sample.go b/metrics/resetting_sample.go new file mode 100644 index 0000000000000..43c1129cd0bc9 --- /dev/null +++ b/metrics/resetting_sample.go @@ -0,0 +1,24 @@ +package metrics + +// ResettingSample converts an ordinary sample into one that resets whenever its +// snapshot is retrieved. This will break for multi-monitor systems, but when only +// a single metric is being pushed out, this ensure that low-frequency events don't +// skew th charts indefinitely. +func ResettingSample(sample Sample) Sample { + return &resettingSample{ + Sample: sample, + } +} + +// resettingSample is a simple wrapper around a sample that resets it upon the +// snapshot retrieval. +type resettingSample struct { + Sample +} + +// Snapshot returns a read-only copy of the sample with the original reset. +func (rs *resettingSample) Snapshot() Sample { + s := rs.Sample.Snapshot() + rs.Sample.Clear() + return s +}