clair/utils/prometheus.go

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package utils
import (
"time"
"github.com/prometheus/client_golang/prometheus"
)
// PrometheusObserveTimeMilliseconds observes the elapsed time since start, in milliseconds,
// on the specified Prometheus Histogram.
func PrometheusObserveTimeMilliseconds(h prometheus.Histogram, start time.Time) {
h.Observe(float64(time.Since(start).Nanoseconds()) / float64(time.Millisecond))
}