func getEndOrdinal(set *apps.StatefulSet) int {
	return getStartOrdinal(set) + int(*set.Spec.Replicas) - 1
}

// podInOrdinalRange returns true if the pod ordinal is within the allowed
// range of ordinals that this StatefulSet is set to control.
func podInOrdinalRange(pod *v1.Pod, set *apps.StatefulSet) bool {
	ordinal := getOrdinal(pod)
	return ordinal >= getStartOrdinal(set) && ordinal <= getEndOrdinal(set)
}