Function Run

golink.go:90–241

()

var localClient *tailscale.LocalClient

func Run() error {
	flag.Parse()

	hostinfo.SetApp("golink")

	// if resolving from backup, set sqlitefile and snapshot flags to
	// restore links into an in-memory sqlite database.
	if *resolveFromBackup != "" {
		*sqlitefile = ":memory:"
		snapshot = resolveFromBackup
		if flag.NArg() != 1 {
			log.Fatal("--resolve-from-backup also requires a link to be resolved")
		}
	}

	if *sqlitefile == "" {
		if devMode() {
			tmpdir, err := os.MkdirTemp("", "golink_dev_*")
			if err != nil {
				return err
			}
			*sqlitefile = filepath.Join(tmpdir, "golink.db")
			log.Printf("Dev mode temp db: %s", *sqlitefile)
		} else {
			return errors.New("--sqlitedb is required")
		}
	}

	var err error
	if db, err = NewSQLiteDB(*sqlitefile); err != nil {
		return fmt.Errorf("NewSQLiteDB(%q): %w", *sqlitefile, err)
	}

	if *snapshot != "" {
		if LastSnapshot != nil {
			log.Printf("LastSnapshot already set; ignoring --snapshot")
		} else {
			var err error
			LastSnapshot, err = os.ReadFile(*snapshot)
			if err != nil {
				log.Fatalf("error reading snapshot file %q: %v", *snapshot, err)
			}
		}
	}
	if err := restoreLastSnapshot(); err != nil {
		log.Printf("restoring snapshot: %v", err)
	}
	if err := initStats(); err != nil {
		log.Printf("initializing stats: %v", err)
	}

	// if link specified on command line, resolve and exit
	if flag.NArg() > 0 {
		u, err := url.Parse(flag.Arg(0))
		if err != nil {
			log.Fatal(err)
		}
		dst, err := resolveLink(u)