(tw *tar.Writer, image v1.Image)
| 46 | } |
| 47 | |
| 48 | func writeLayoutImage(tw *tar.Writer, image v1.Image) error { |
| 49 | // write config, each layer, manifest, saving the digest for each |
| 50 | manifest, err := image.Manifest() |
| 51 | if err != nil { |
| 52 | return err |
| 53 | } |
| 54 | configDesc := manifest.Config |
| 55 | configBytes, err := image.RawConfigFile() |
| 56 | if err != nil { |
| 57 | return err |
| 58 | } |
| 59 | if err := writeLayoutBlob(tw, configDesc.Digest.Hex, configDesc.Size, bytes.NewReader(configBytes)); err != nil { |
| 60 | return err |
| 61 | } |
| 62 | |
| 63 | layers, err := image.Layers() |
| 64 | if err != nil { |
| 65 | return err |
| 66 | } |
| 67 | for _, layer := range layers { |
| 68 | blob, err := layer.Compressed() |
| 69 | if err != nil { |
| 70 | return err |
| 71 | } |
| 72 | defer func() { _ = blob.Close() }() |
| 73 | blobDigest, err := layer.Digest() |
| 74 | if err != nil { |
| 75 | return err |
| 76 | } |
| 77 | blobSize, err := layer.Size() |
| 78 | if err != nil { |
| 79 | return err |
| 80 | } |
| 81 | if err := writeLayoutBlob(tw, blobDigest.Hex, blobSize, blob); err != nil { |
| 82 | return err |
| 83 | } |
| 84 | } |
| 85 | // write the manifest |
| 86 | manifestSize, err := image.Size() |
| 87 | if err != nil { |
| 88 | return err |
| 89 | } |
| 90 | manifestDigest, err := image.Digest() |
| 91 | if err != nil { |
| 92 | return err |
| 93 | } |
| 94 | manifestBytes, err := image.RawManifest() |
| 95 | if err != nil { |
| 96 | return err |
| 97 | } |
| 98 | if err := writeLayoutBlob(tw, manifestDigest.Hex, manifestSize, bytes.NewReader(manifestBytes)); err != nil { |
| 99 | return err |
| 100 | } |
| 101 | return nil |
| 102 | } |
| 103 | |
| 104 | func writeLayoutBlob(tw *tar.Writer, digest string, size int64, blob io.Reader) error { |
| 105 | if err := tw.WriteHeader(&tar.Header{ |
no test coverage detected