func LinearJitterBackoff()

in client.go [558:578]

• 10 lines of code
• 2 McCabe index (conditional complexity)

func LinearJitterBackoff(min, max time.Duration, attemptNum int, resp *http.Response) time.Duration {
	// attemptNum always starts at zero but we want to start at 1 for multiplication
	attemptNum++

	if max <= min {
		// Unclear what to do here, or they are the same, so return min *
		// attemptNum
		return min * time.Duration(attemptNum)
	}

	// Seed rand; doing this every time is fine
	rand := rand.New(rand.NewSource(int64(time.Now().Nanosecond())))

	// Pick a random number that lies somewhere between the min and max and
	// multiply by the attemptNum. attemptNum starts at zero so we always
	// increment here. We first get a random percentage, then apply that to the
	// difference between min and max, and add to min.
	jitter := rand.Float64() * float64(max-min)
	jitterMin := int64(jitter) + int64(min)
	return time.Duration(jitterMin * int64(attemptNum))
}