Golang | Generate random MongoDB ObjectId

objectId.go

func mongoObjectId() string {
	ts := time.Now().UnixMilli() / 1000;
	id := strconv.FormatInt(ts, 16)
	for i := 0; i < 16; i++ {
		id += fmt.Sprintf("%x", rand.Intn(16))
	}
	return id
}