Function showBackend

cli/show.go:227–289

(cli *SeesawCLI, args []string)

}

func showBackend(cli *SeesawCLI, args []string) error {
	if len(args) > 1 {
		fmt.Println("show backend <backend>")
		return nil
	}

	vservers, err := cli.seesaw.Vservers()
	if err != nil {
		return fmt.Errorf("Failed to get vservers: %v", err)
	}

	// If no args given, list all backends.
	showAll := len(args) == 0

	backendsMap := make(map[string]seesaw.Destinations)
	for _, v := range vservers {
		for _, s := range v.Services {
			for _, d := range s.Destinations {
				if showAll || strings.HasPrefix(d.Backend.Hostname, args[0]) {
					list, ok := backendsMap[d.Backend.Hostname]
					if !ok {
						list = make([]*seesaw.Destination, 0)
					}
					list = append(list, d)
					backendsMap[d.Backend.Hostname] = list
				}
			}
		}
	}

	if len(backendsMap) == 0 {
		if len(args) > 0 {
			return fmt.Errorf("backend '%v...' not found", args[0])
		}
		return fmt.Errorf("no backends found")
	}

	backends := make([]string, 0)
	for backend := range backendsMap {
		backends = append(backends, backend)
	}

	if len(backends) == 1 {
		// Exactly 1 backend found, print details.
		printHdr("Backend")
		fmt.Printf("  Hostname: %v\n", backends[0])
		fmt.Printf("  Destinations:\n")
		dests := backendsMap[backends[0]]
		sort.Sort(dests)
		for i, d := range dests {
			fmt.Printf("  [%3d] %v\n", i+1, destSummary(d, vservers))
		}
		return nil
	}

	// Multiple matching backends, just list their names.
	sort.Strings(backends)
	printHdr("Backends")