Function logRoutes

main.go:654–691

(t route.Table, last, next, format string)

}

func logRoutes(t route.Table, last, next, format string) {
	fmtDiff := func(diffs []dmp.Diff) string {
		var b bytes.Buffer
		for _, d := range diffs {
			t := strings.TrimSpace(d.Text)
			if t == "" {
				continue
			}
			switch d.Type {
			case dmp.DiffDelete:
				b.WriteString("- ")
				b.WriteString(strings.ReplaceAll(t, "\n", "\n- "))
			case dmp.DiffInsert:
				b.WriteString("+ ")
				b.WriteString(strings.ReplaceAll(t, "\n", "\n+ "))
			}
		}
		return b.String()
	}

	const defFormat = "delta"
	switch format {
	case "detail":
		log.Printf("[INFO] Updated config to\n%s", t.Dump())

	case "delta":
		if delta := fmtDiff(dmp.New().DiffMain(last, next, true)); delta != "" {
			log.Printf("[INFO] Config updates\n%s", delta)
		}

	case "all":
		log.Printf("[INFO] Updated config to\n%s", next)

	default:
		log.Printf("[WARN] Invalid route format %q. Defaulting to %q", format, defFormat)
		logRoutes(t, last, next, defFormat)
	}
}

func toJSON(v any) string {
	data, err := json.MarshalIndent(v, "", "    ")