func main()

in main.go [44:100]

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

func main() {
	flag.BoolVar(&top, "top", false, "")
	flag.IntVar(&number, "n", 10, "")
	flag.IntVar(&concurrency, "c", 10, "")
	flag.DurationVar(&timeout, "t", time.Duration(0), "")
	flag.BoolVar(&verbose, "v", false, "")
	flag.BoolVar(&csv, "csv", false, "")
	flag.BoolVar(&csvCum, "csv-cum", false, "")
	flag.StringVar(&region, "r", "", "")
	flag.StringVar(&endpointsURL, "url", "https://global.gcping.com/api/endpoints", "")

	flag.Usage = usage
	flag.Parse()

	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	// Fetch and cache endpoint map in memory for the duration of the
	// process.
	endpoints, err := config.EndpointsFromServer(ctx, endpointsURL)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	if number < 0 || concurrency <= 0 {
		usage()
	}
	if csv {
		verbose = false // if output is CSV, no need for verbose output
	}

	if region != "" {
		if _, found := endpoints[region]; !found {
			fmt.Printf("region %q is not supported or does not exist\n", region)
			os.Exit(1)
		}
	}

	client = &http.Client{
		Timeout: timeout,
	}

	w := &worker{}
	go w.start()

	switch {
	case region != "":
		w.reportRegion(endpoints, region)
	case top:
		w.reportTop(endpoints)
	case csvCum:
		w.reportCSV(endpoints)
	default:
		w.reportAll(endpoints)
	}
}