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package images
import (
"context"
"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
}
}
var lastErr error
for id, e := range results.Errors {
if lastErr != nil {
fmt.Fprintf(os.Stderr, "%s: %s\n", id, lastErr.Error())
}
lastErr = e
}
return lastErr
}
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)
}
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