mirror of https://github.com/docker/cli.git
image/list: Add `--tree` flag
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
This commit is contained in:
Paweł Gronowski
parent
bbce5a0afa
commit
be11b74ee9
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@ -2,6 +2,7 @@ package image
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import (
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"context"
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"errors"
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"fmt"
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"io"
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@ -24,6 +25,7 @@ type imagesOptions struct {
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format string
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filter opts.FilterOpt
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calledAs string
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tree bool
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}
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// NewImagesCommand creates a new `docker images` command
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@ -59,6 +61,10 @@ func NewImagesCommand(dockerCLI command.Cli) *cobra.Command {
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flags.StringVar(&options.format, "format", "", flagsHelper.FormatHelp)
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flags.VarP(&options.filter, "filter", "f", "Filter output based on conditions provided")
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flags.BoolVar(&options.tree, "tree", false, "List multi-platform images as a tree (EXPERIMENTAL)")
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flags.SetAnnotation("tree", "version", []string{"1.47"})
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flags.SetAnnotation("tree", "experimentalCLI", nil)
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return cmd
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}
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@ -75,6 +81,26 @@ func runImages(ctx context.Context, dockerCLI command.Cli, options imagesOptions
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filters.Add("reference", options.matchName)
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}
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if options.tree {
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if options.quiet {
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return errors.New("--quiet is not yet supported with --tree")
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}
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if options.noTrunc {
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return errors.New("--no-trunc is not yet supported with --tree")
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}
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if options.showDigests {
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return errors.New("--show-digest is not yet supported with --tree")
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}
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if options.format != "" {
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return errors.New("--format is not yet supported with --tree")
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}
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return runTree(ctx, dockerCLI, treeOptions{
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all: options.all,
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filters: filters,
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})
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}
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images, err := dockerCLI.Client().ImageList(ctx, image.ListOptions{
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All: options.all,
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Filters: filters,
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@ -0,0 +1,312 @@
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package image
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import (
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"context"
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"fmt"
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"strings"
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"unicode/utf8"
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"github.com/containerd/platforms"
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"github.com/docker/cli/cli/command"
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"github.com/docker/cli/cli/streams"
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"github.com/docker/docker/api/types/filters"
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imagetypes "github.com/docker/docker/api/types/image"
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"github.com/docker/docker/pkg/stringid"
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"github.com/docker/go-units"
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"github.com/morikuni/aec"
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)
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type treeOptions struct {
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all bool
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filters filters.Args
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}
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func runTree(ctx context.Context, dockerCLI command.Cli, opts treeOptions) error {
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images, err := dockerCLI.Client().ImageList(ctx, imagetypes.ListOptions{
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All: opts.all,
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Filters: opts.filters,
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Manifests: true,
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})
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if err != nil {
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return err
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}
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view := make([]topImage, 0, len(images))
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for _, img := range images {
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details := imageDetails{
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ID: img.ID,
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DiskUsage: units.HumanSizeWithPrecision(float64(img.Size), 3),
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Used: img.Containers > 0,
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}
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children := make([]subImage, 0, len(img.Manifests))
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for _, im := range img.Manifests {
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if im.Kind != imagetypes.ManifestKindImage {
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continue
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}
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sub := subImage{
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Platform: platforms.Format(im.ImageData.Platform),
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Available: im.Available,
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Details: imageDetails{
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ID: im.ID,
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DiskUsage: units.HumanSizeWithPrecision(float64(im.Size.Total), 3),
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Used: len(im.ImageData.Containers) > 0,
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},
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}
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children = append(children, sub)
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}
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view = append(view, topImage{
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Names: img.RepoTags,
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Details: details,
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Children: children,
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})
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}
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return printImageTree(dockerCLI, view)
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}
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type imageDetails struct {
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ID string
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DiskUsage string
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Used bool
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}
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type topImage struct {
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Names []string
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Details imageDetails
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Children []subImage
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}
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type subImage struct {
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Platform string
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Available bool
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Details imageDetails
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}
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const columnSpacing = 3
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func printImageTree(dockerCLI command.Cli, images []topImage) error {
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out := dockerCLI.Out()
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_, width := out.GetTtySize()
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if width == 0 {
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width = 80
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}
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if width < 20 {
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width = 20
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}
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headerColor := aec.NewBuilder(aec.DefaultF, aec.Bold).ANSI
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topNameColor := aec.NewBuilder(aec.BlueF, aec.Underline, aec.Bold).ANSI
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normalColor := aec.NewBuilder(aec.DefaultF).ANSI
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greenColor := aec.NewBuilder(aec.GreenF).ANSI
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if !out.IsTerminal() {
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headerColor = noColor{}
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topNameColor = noColor{}
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normalColor = noColor{}
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greenColor = noColor{}
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}
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columns := []imgColumn{
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{Title: "Image", Width: 0, Left: true},
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{
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Title: "ID",
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Width: 12,
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DetailsValue: func(d *imageDetails) string {
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return stringid.TruncateID(d.ID)
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},
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},
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{
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Title: "Disk usage",
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Width: 10,
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DetailsValue: func(d *imageDetails) string {
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return d.DiskUsage
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},
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},
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{
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Title: "Used",
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Width: 4,
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Color: &greenColor,
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DetailsValue: func(d *imageDetails) string {
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if d.Used {
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return "✔"
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}
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return " "
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},
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},
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}
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nameWidth := int(width)
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for idx, h := range columns {
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if h.Width == 0 {
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continue
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}
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d := h.Width
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if idx > 0 {
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d += columnSpacing
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}
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// If the first column gets too short, remove remaining columns
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if nameWidth-d < 12 {
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columns = columns[:idx]
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break
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}
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nameWidth -= d
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}
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// Try to make the first column as narrow as possible
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widest := widestFirstColumnValue(columns, images)
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if nameWidth > widest {
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nameWidth = widest
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}
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columns[0].Width = nameWidth
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// Print columns
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for i, h := range columns {
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if i > 0 {
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_, _ = fmt.Fprint(out, strings.Repeat(" ", columnSpacing))
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}
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_, _ = fmt.Fprint(out, h.Print(headerColor, h.Title))
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}
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_, _ = fmt.Fprintln(out)
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// Print images
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for idx, img := range images {
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if idx != 0 {
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_, _ = fmt.Fprintln(out, "")
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}
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printNames(out, columns, img, topNameColor)
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printDetails(out, columns, normalColor, img.Details)
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printChildren(out, columns, img, normalColor)
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}
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return nil
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}
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func printDetails(out *streams.Out, headers []imgColumn, defaultColor aec.ANSI, details imageDetails) {
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for _, h := range headers {
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if h.DetailsValue == nil {
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continue
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}
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_, _ = fmt.Fprint(out, strings.Repeat(" ", columnSpacing))
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clr := defaultColor
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if h.Color != nil {
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clr = *h.Color
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}
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val := h.DetailsValue(&details)
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_, _ = fmt.Fprint(out, h.Print(clr, val))
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}
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fmt.Printf("\n")
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}
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func printChildren(out *streams.Out, headers []imgColumn, img topImage, normalColor aec.ANSI) {
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for idx, sub := range img.Children {
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clr := normalColor
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if !sub.Available {
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clr = normalColor.With(aec.Faint)
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}
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if idx != len(img.Children)-1 {
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_, _ = fmt.Fprint(out, headers[0].Print(clr, "├─ "+sub.Platform))
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} else {
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_, _ = fmt.Fprint(out, headers[0].Print(clr, "└─ "+sub.Platform))
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}
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printDetails(out, headers, clr, sub.Details)
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}
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}
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func printNames(out *streams.Out, headers []imgColumn, img topImage, color aec.ANSI) {
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for nameIdx, name := range img.Names {
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if nameIdx != 0 {
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_, _ = fmt.Fprintln(out, "")
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}
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_, _ = fmt.Fprint(out, headers[0].Print(color, name))
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}
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}
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type imgColumn struct {
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Title string
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Width int
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Left bool
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DetailsValue func(*imageDetails) string
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Color *aec.ANSI
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}
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func truncateRunes(s string, length int) string {
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runes := []rune(s)
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if len(runes) > length {
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return string(runes[:length-3]) + "..."
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}
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return s
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}
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func (h imgColumn) Print(clr aec.ANSI, s string) (out string) {
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if h.Left {
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return h.PrintL(clr, s)
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}
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return h.PrintC(clr, s)
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}
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func (h imgColumn) PrintC(clr aec.ANSI, s string) (out string) {
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ln := utf8.RuneCountInString(s)
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if ln > h.Width {
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return clr.Apply(truncateRunes(s, h.Width))
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}
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fill := h.Width - ln
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l := fill / 2
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r := fill - l
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return strings.Repeat(" ", l) + clr.Apply(s) + strings.Repeat(" ", r)
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}
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func (h imgColumn) PrintL(clr aec.ANSI, s string) string {
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ln := utf8.RuneCountInString(s)
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if ln > h.Width {
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return clr.Apply(truncateRunes(s, h.Width))
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}
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return clr.Apply(s) + strings.Repeat(" ", h.Width-ln)
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}
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type noColor struct{}
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func (a noColor) With(ansi ...aec.ANSI) aec.ANSI {
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return aec.NewBuilder(ansi...).ANSI
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}
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func (a noColor) Apply(s string) string {
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return s
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}
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func (a noColor) String() string {
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return ""
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}
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// widestFirstColumnValue calculates the width needed to fully display the image names and platforms.
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func widestFirstColumnValue(headers []imgColumn, images []topImage) int {
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width := len(headers[0].Title)
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for _, img := range images {
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for _, name := range img.Names {
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if len(name) > width {
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width = len(name)
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}
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}
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for _, sub := range img.Children {
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pl := len(sub.Platform) + len("└─ ")
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if pl > width {
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width = pl
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}
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}
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}
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return width
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}
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@ -17,6 +17,7 @@ List images
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| [`--format`](#format) | `string` | | Format output using a custom template:<br>'table': Print output in table format with column headers (default)<br>'table TEMPLATE': Print output in table format using the given Go template<br>'json': Print in JSON format<br>'TEMPLATE': Print output using the given Go template.<br>Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates |
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| [`--no-trunc`](#no-trunc) | `bool` | | Don't truncate output |
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| `-q`, `--quiet` | `bool` | | Only show image IDs |
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| `--tree` | `bool` | | List multi-platform images as a tree (EXPERIMENTAL) |
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<!---MARKER_GEN_END-->
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@ -17,6 +17,7 @@ List images
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| `--format` | `string` | | Format output using a custom template:<br>'table': Print output in table format with column headers (default)<br>'table TEMPLATE': Print output in table format using the given Go template<br>'json': Print in JSON format<br>'TEMPLATE': Print output using the given Go template.<br>Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates |
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| `--no-trunc` | `bool` | | Don't truncate output |
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| `-q`, `--quiet` | `bool` | | Only show image IDs |
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| `--tree` | `bool` | | List multi-platform images as a tree (EXPERIMENTAL) |
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<!---MARKER_GEN_END-->
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