Function DurationWithJitter

pkg/util/time.go:74–84

DurationWithJitter returns random duration from "input - input*variance" to "input + input*variance" interval.

(input time.Duration, variancePerc float64)

// DurationWithJitter returns random duration from "input - input*variance" to "input + input*variance" interval.
func DurationWithJitter(input time.Duration, variancePerc float64) time.Duration {
	// No duration? No jitter.
	if input == 0 {
		return 0
	}

	variance := int64(float64(input) * variancePerc)
	jitter := rand.Int63n(variance*2) - variance

	return input + time.Duration(jitter)
}

// DurationWithPositiveJitter returns random duration from "input" to "input + input*variance" interval.
func DurationWithPositiveJitter(input time.Duration, variancePerc float64) time.Duration {