package images import ( "context" "encoding/json" "fmt" "os" "strings" "text/tabwriter" "text/template" "github.com/containers/buildah/pkg/formats" "github.com/containers/libpod/cmd/podman/common" "github.com/containers/libpod/cmd/podman/registry" "github.com/containers/libpod/pkg/domain/entities" "github.com/pkg/errors" "github.com/spf13/cobra" ) var ( // Command: podman image _inspect_ inspectCmd = &cobra.Command{ Use: "inspect [flags] IMAGE", Short: "Display the configuration of an image", Long: `Displays the low-level information on an image identified by name or ID.`, RunE: inspect, Example: `podman inspect alpine podman inspect --format "imageId: {{.Id}} size: {{.Size}}" alpine podman inspect --format "image: {{.ImageName}} driver: {{.Driver}}" myctr`, } inspectOpts *entities.InspectOptions ) func init() { registry.Commands = append(registry.Commands, registry.CliCommand{ Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode}, Command: inspectCmd, Parent: imageCmd, }) inspectOpts = common.AddInspectFlagSet(inspectCmd) } func inspect(cmd *cobra.Command, args []string) error { if inspectOpts.Size { return fmt.Errorf("--size can only be used for containers") } if inspectOpts.Latest { return fmt.Errorf("--latest can only be used for containers") } if len(args) == 0 { return errors.Errorf("image name must be specified: podman image inspect [options [...]] name") } results, err := registry.ImageEngine().Inspect(context.Background(), args, *inspectOpts) if err != nil { return err } if len(results.Images) > 0 { if inspectOpts.Format == "" { buf, err := json.MarshalIndent(results.Images, "", " ") if err != nil { return err } fmt.Println(string(buf)) for id, e := range results.Errors { fmt.Fprintf(os.Stderr, "%s: %s\n", id, e.Error()) } return nil } row := inspectFormat(inspectOpts.Format) format := "{{range . }}" + row + "{{end}}" tmpl, err := template.New("inspect").Parse(format) if err != nil { return err } w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0) defer func() { _ = w.Flush() }() err = tmpl.Execute(w, results.Images) if err != nil { return err } } for id, e := range results.Errors { fmt.Fprintf(os.Stderr, "%s: %s\n", id, e.Error()) } return nil } func inspectFormat(row string) string { r := strings.NewReplacer("{{.Id}}", formats.IDString, ".Src", ".Source", ".Dst", ".Destination", ".ImageID", ".Image", ) row = r.Replace(row) if !strings.HasSuffix(row, "\n") { row += "\n" } return row } func Inspect(cmd *cobra.Command, args []string, options *entities.InspectOptions) error { inspectOpts = options return inspect(cmd, args) }