Tar archives a Terraform directory.
(w io.Writer, logger slog.Logger, directory string, limit int64)
| 42 | |
| 43 | // Tar archives a Terraform directory. |
| 44 | func Tar(w io.Writer, logger slog.Logger, directory string, limit int64) error { |
| 45 | // The total bytes written must be under the limit, so use -1 |
| 46 | w = xio.NewLimitWriter(w, limit-1) |
| 47 | tarWriter := tar.NewWriter(w) |
| 48 | |
| 49 | tfExts := []string{".tf", ".tf.json"} |
| 50 | hasTf, err := dirHasExt(directory, tfExts...) |
| 51 | if err != nil { |
| 52 | return err |
| 53 | } |
| 54 | if !hasTf { |
| 55 | absPath, err := filepath.Abs(directory) |
| 56 | if err != nil { |
| 57 | return err |
| 58 | } |
| 59 | |
| 60 | // Show absolute path to aid in debugging. E.g. showing "." is |
| 61 | // useless. |
| 62 | return xerrors.Errorf( |
| 63 | "%s is not a valid template since it has no %s files", |
| 64 | absPath, tfExts, |
| 65 | ) |
| 66 | } |
| 67 | |
| 68 | err = filepath.Walk(directory, func(file string, fileInfo os.FileInfo, err error) error { |
| 69 | if err != nil { |
| 70 | return err |
| 71 | } |
| 72 | var link string |
| 73 | if fileInfo.Mode()&os.ModeSymlink == os.ModeSymlink { |
| 74 | link, err = os.Readlink(file) |
| 75 | if err != nil { |
| 76 | return err |
| 77 | } |
| 78 | } |
| 79 | header, err := tar.FileInfoHeader(fileInfo, link) |
| 80 | if err != nil { |
| 81 | return err |
| 82 | } |
| 83 | rel, err := filepath.Rel(directory, file) |
| 84 | if err != nil { |
| 85 | return err |
| 86 | } |
| 87 | // We want to allow .terraform.lock.hcl files to be archived. This |
| 88 | // allows provider plugins to be cached. |
| 89 | if (strings.HasPrefix(rel, ".") || strings.HasPrefix(filepath.Base(rel), ".")) && filepath.Base(rel) != ".terraform.lock.hcl" { |
| 90 | if fileInfo.IsDir() && rel != "." { |
| 91 | // Don't archive hidden files! |
| 92 | return filepath.SkipDir |
| 93 | } |
| 94 | // Don't archive hidden files! |
| 95 | return nil |
| 96 | } |
| 97 | if strings.Contains(rel, ".tfstate") { |
| 98 | // Don't store tfstate! |
| 99 | logger.Debug(context.Background(), "skip state", slog.F("name", rel)) |
| 100 | return nil |
| 101 | } |