92 lines
2.5 KiB
Go
92 lines
2.5 KiB
Go
package daemon // import "github.com/docker/docker/daemon"
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import (
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"time"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/layer"
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"github.com/docker/docker/pkg/system"
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"github.com/pkg/errors"
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)
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// LookupImage looks up an image by name and returns it as an ImageInspect
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// structure.
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func (daemon *Daemon) LookupImage(name string) (*types.ImageInspect, error) {
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img, err := daemon.GetImage(name)
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if err != nil {
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return nil, errors.Wrapf(err, "no such image: %s", name)
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}
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if !system.IsOSSupported(img.OperatingSystem()) {
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return nil, system.ErrNotSupportedOperatingSystem
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}
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refs := daemon.referenceStore.References(img.ID().Digest())
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repoTags := []string{}
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repoDigests := []string{}
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for _, ref := range refs {
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switch ref.(type) {
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case reference.NamedTagged:
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repoTags = append(repoTags, reference.FamiliarString(ref))
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case reference.Canonical:
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repoDigests = append(repoDigests, reference.FamiliarString(ref))
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}
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}
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var size int64
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var layerMetadata map[string]string
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layerID := img.RootFS.ChainID()
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if layerID != "" {
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l, err := daemon.layerStores[img.OperatingSystem()].Get(layerID)
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if err != nil {
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return nil, err
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}
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defer layer.ReleaseAndLog(daemon.layerStores[img.OperatingSystem()], l)
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size, err = l.Size()
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if err != nil {
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return nil, err
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}
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layerMetadata, err = l.Metadata()
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if err != nil {
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return nil, err
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}
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}
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comment := img.Comment
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if len(comment) == 0 && len(img.History) > 0 {
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comment = img.History[len(img.History)-1].Comment
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}
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lastUpdated, err := daemon.imageStore.GetLastUpdated(img.ID())
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if err != nil {
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return nil, err
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}
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imageInspect := &types.ImageInspect{
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ID: img.ID().String(),
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RepoTags: repoTags,
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RepoDigests: repoDigests,
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Parent: img.Parent.String(),
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Comment: comment,
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Created: img.Created.Format(time.RFC3339Nano),
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Container: img.Container,
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ContainerConfig: &img.ContainerConfig,
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DockerVersion: img.DockerVersion,
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Author: img.Author,
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Config: img.Config,
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Architecture: img.Architecture,
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Os: img.OperatingSystem(),
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OsVersion: img.OSVersion,
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Size: size,
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VirtualSize: size, // TODO: field unused, deprecate
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RootFS: rootFSToAPIType(img.RootFS),
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Metadata: types.ImageMetadata{
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LastTagTime: lastUpdated,
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},
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}
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imageInspect.GraphDriver.Name = daemon.GraphDriverName(img.OperatingSystem())
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imageInspect.GraphDriver.Data = layerMetadata
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return imageInspect, nil
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}
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