()
| 16 | ) |
| 17 | |
| 18 | func cacheExportCmd() *cobra.Command { |
| 19 | var ( |
| 20 | platform string |
| 21 | outputFile string |
| 22 | format string |
| 23 | tagName string |
| 24 | ) |
| 25 | cmd := &cobra.Command{ |
| 26 | Use: "export", |
| 27 | Short: "export individual images from the linuxkit cache", |
| 28 | Long: `Export individual images from the linuxkit cache. Supports exporting into multiple formats.`, |
| 29 | Args: cobra.MinimumNArgs(1), |
| 30 | RunE: func(cmd *cobra.Command, args []string) error { |
| 31 | names := args |
| 32 | name := names[0] |
| 33 | fullname := util.ReferenceExpand(name) |
| 34 | |
| 35 | p, err := cachepkg.NewProvider(cacheDir) |
| 36 | if err != nil { |
| 37 | log.Fatalf("unable to read a local cache: %v", err) |
| 38 | } |
| 39 | ref, err := reference.Parse(fullname) |
| 40 | if err != nil { |
| 41 | log.Fatalf("invalid image name %s: %v", name, err) |
| 42 | } |
| 43 | desc, err := p.FindDescriptor(&ref) |
| 44 | if err != nil { |
| 45 | log.Fatalf("unable to find image named %s: %v", name, err) |
| 46 | } |
| 47 | |
| 48 | plat, err := v1.ParsePlatform(platform) |
| 49 | if err != nil { |
| 50 | log.Fatalf("invalid platform %s: %v", platform, err) |
| 51 | } |
| 52 | platspec := imagespec.Platform{ |
| 53 | Architecture: plat.Architecture, |
| 54 | OS: plat.OS, |
| 55 | Variant: plat.Variant, |
| 56 | } |
| 57 | src := p.NewSource(&ref, &platspec, desc) |
| 58 | var reader io.ReadCloser |
| 59 | switch format { |
| 60 | case "docker": |
| 61 | fullTagName := fullname |
| 62 | if tagName != "" { |
| 63 | fullTagName = util.ReferenceExpand(tagName) |
| 64 | } |
| 65 | reader, err = src.V1TarReader(fullTagName) |
| 66 | case "oci": |
| 67 | fullTagName := fullname |
| 68 | if tagName != "" { |
| 69 | fullTagName = util.ReferenceExpand(tagName) |
| 70 | } |
| 71 | reader, err = src.OCITarReader(fullTagName) |
| 72 | case "filesystem": |
| 73 | reader, err = src.TarReader() |
| 74 | default: |
| 75 | log.Fatalf("requested unknown format %s: %v", name, err) |
no test coverage detected