func main()

in cli_tools/gce_export/main.go [238:285]
40 lines of code
10 McCabe index (conditional complexity)

func main() {
	flag.Parse()
	ctx := context.Background()

	if *gcsPath == "" {
		log.Fatal("The flag -gcs_path must be provided")
	}

	if *disk == "" {
		log.Fatal("The flag -disk must be provided")
	}

	bkt, obj, err := storageutils.GetGCSObjectPathElements(*gcsPath)
	if err != nil {
		log.Fatal(err)
	}

	file, err := os.Open(*disk)
	if err != nil {
		log.Fatal(err)
	}
	defer file.Close()

	size, err := diskLength(file)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("GCEExport: Disk %s is %s, compressed size will most likely be much smaller.\n", *disk, humanize.IBytes(uint64(size)))
	if !*noconfirm {
		fmt.Print("Continue? (y/N): ")
		var c string
		fmt.Scanln(&c)
		c = strings.ToLower(c)
		if c != "y" && c != "yes" {
			fmt.Println("Aborting")
			os.Exit(0)
		}
	}

	fmt.Println("GCEExport: Beginning export process...")
	start := time.Now()
	if err := stream(ctx, file, size, *bufferPrefix, bkt, obj); err != nil {
		log.Fatal(err)
	}

	fmt.Println("GCEExport: Finished export in ", time.Since(start))
}