custom-kube-scheduler/kubernetes-v1.15.4/vendor/github.com/onsi/ginkgo/internal/specrunner/random_id.go

package specrunner

import (
	"crypto/rand"
	"fmt"
)

func randomID() string {
	b := make([]byte, 8)
	_, err := rand.Read(b)
	if err != nil {
		return ""
	}
	return fmt.Sprintf("%x-%x-%x-%x", b[0:2], b[2:4], b[4:6], b[6:8])
}