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