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package images // import "github.com/docker/docker/daemon/images"
import (
"fmt"
"github.com/docker/distribution/reference"
"github.com/docker/docker/errdefs"
"github.com/docker/docker/image"
)
// ErrImageDoesNotExist is error returned when no image can be found for a reference.
type ErrImageDoesNotExist struct {
ref reference.Reference
}
func (e ErrImageDoesNotExist) Error() string {
ref := e.ref
if named, ok := ref.(reference.Named); ok {
ref = reference.TagNameOnly(named)
}
return fmt.Sprintf("No such image: %s", reference.FamiliarString(ref))
}
// NotFound implements the NotFound interface
func (e ErrImageDoesNotExist) NotFound() {}
// GetImage returns an image corresponding to the image referred to by refOrID.
func (i *ImageService) GetImage(refOrID string) (*image.Image, error) {
ref, err := reference.ParseAnyReference(refOrID)
if err != nil {
return nil, errdefs.InvalidParameter(err)
}
namedRef, ok := ref.(reference.Named)
if !ok {
digested, ok := ref.(reference.Digested)
if !ok {
return nil, ErrImageDoesNotExist{ref}
}
id := image.IDFromDigest(digested.Digest())
if img, err := i.imageStore.Get(id); err == nil {
return img, nil
}
return nil, ErrImageDoesNotExist{ref}
}
if digest, err := i.referenceStore.Get(namedRef); err == nil {
// Search the image stores to get the operating system, defaulting to host OS.
id := image.IDFromDigest(digest)
if img, err := i.imageStore.Get(id); err == nil {
return img, nil
}
}
// Search based on ID
if id, err := i.imageStore.Search(refOrID); err == nil {
img, err := i.imageStore.Get(id)
if err != nil {
return nil, ErrImageDoesNotExist{ref}
}
return img, nil
}
return nil, ErrImageDoesNotExist{ref}
}
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