diff options
Diffstat (limited to 'cmd')
-rw-r--r-- | cmd/podmanV2/images/save.go | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/cmd/podmanV2/images/save.go b/cmd/podmanV2/images/save.go new file mode 100644 index 000000000..ae39b7bce --- /dev/null +++ b/cmd/podmanV2/images/save.go @@ -0,0 +1,87 @@ +package images + +import ( + "context" + "os" + "strings" + + "github.com/containers/libpod/libpod/define" + + "github.com/containers/libpod/cmd/podmanV2/parse" + "github.com/containers/libpod/cmd/podmanV2/registry" + "github.com/containers/libpod/pkg/domain/entities" + "github.com/containers/libpod/pkg/util" + "github.com/pkg/errors" + "github.com/spf13/cobra" + "golang.org/x/crypto/ssh/terminal" +) + +var validFormats = []string{define.OCIManifestDir, define.OCIArchive, define.V2s2ManifestDir, define.V2s2Archive} + +var ( + saveDescription = `Save an image to docker-archive or oci-archive on the local machine. Default is docker-archive.` + + saveCommand = &cobra.Command{ + Use: "save [flags] IMAGE", + Short: "Save image to an archive", + Long: saveDescription, + PersistentPreRunE: preRunE, + RunE: save, + Args: func(cmd *cobra.Command, args []string) error { + if len(args) == 0 { + return errors.Errorf("need at least 1 argument") + } + format, err := cmd.Flags().GetString("format") + if err != nil { + return err + } + if !util.StringInSlice(format, validFormats) { + return errors.Errorf("format value must be one of %s", strings.Join(validFormats, " ")) + } + return nil + }, + Example: `podman save --quiet -o myimage.tar imageID + podman save --format docker-dir -o ubuntu-dir ubuntu + podman save > alpine-all.tar alpine:latest`, + } +) + +var ( + saveOpts entities.ImageSaveOptions +) + +func init() { + registry.Commands = append(registry.Commands, registry.CliCommand{ + Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode}, + Command: saveCommand, + }) + flags := saveCommand.Flags() + flags.BoolVar(&saveOpts.Compress, "compress", false, "Compress tarball image layers when saving to a directory using the 'dir' transport. (default is same compression type as source)") + flags.StringVar(&saveOpts.Format, "format", define.V2s2Archive, "Save image to oci-archive, oci-dir (directory with oci manifest type), docker-archive, docker-dir (directory with v2s2 manifest type)") + flags.StringVarP(&saveOpts.Output, "output", "o", "", "Write to a specified file (default: stdout, which must be redirected)") + flags.BoolVarP(&saveOpts.Quiet, "quiet", "q", false, "Suppress the output") + +} + +func save(cmd *cobra.Command, args []string) error { + var ( + tags []string + ) + if cmd.Flag("compress").Changed && (saveOpts.Format != define.OCIManifestDir && saveOpts.Format != define.V2s2ManifestDir && saveOpts.Format == "") { + return errors.Errorf("--compress can only be set when --format is either 'oci-dir' or 'docker-dir'") + } + if len(saveOpts.Output) == 0 { + fi := os.Stdout + if terminal.IsTerminal(int(fi.Fd())) { + return errors.Errorf("refusing to save to terminal. Use -o flag or redirect") + } + saveOpts.Output = "/dev/stdout" + } + if err := parse.ValidateFileName(saveOpts.Output); err != nil { + return err + } + if len(args) > 1 { + tags = args[1:] + } + return registry.ImageEngine().Save(context.Background(), args[0], tags, saveOpts) +} |