moby/daemon/image_inspect.go
Derek McGowan 3a1279393f
Use distribution reference
Remove forked reference package. Use normalized named values
everywhere and familiar functions to convert back to familiar
strings for UX and storage compatibility.

Enforce that the source repository in the distribution metadata
is always a normalized string, ignore invalid values which are not.
Update distribution tests to use normalized values.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
2017-02-07 11:08:37 -08:00

82 lines
2.1 KiB
Go

package daemon
import (
"time"
"github.com/docker/distribution/reference"
"github.com/docker/docker/api/types"
"github.com/docker/docker/layer"
"github.com/pkg/errors"
)
// LookupImage looks up an image by name and returns it as an ImageInspect
// structure.
func (daemon *Daemon) LookupImage(name string) (*types.ImageInspect, error) {
img, err := daemon.GetImage(name)
if err != nil {
return nil, errors.Wrapf(err, "no such image: %s", name)
}
refs := daemon.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 := daemon.layerStore.Get(layerID)
if err != nil {
return nil, err
}
defer layer.ReleaseAndLog(daemon.layerStore, 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
}
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,
Os: img.OS,
OsVersion: img.OSVersion,
Size: size,
VirtualSize: size, // TODO: field unused, deprecate
RootFS: rootFSToAPIType(img.RootFS),
}
imageInspect.GraphDriver.Name = daemon.GraphDriverName()
imageInspect.GraphDriver.Data = layerMetadata
return imageInspect, nil
}