// GetImage returns a pointer to an Image structure describing the image
// referred to by refOrID inside repository repoName.
func (store *TagStore) GetImage(repoName, refOrID string) (*image.Image, error) {
repo, err := store.Get(repoName)
if err != nil {
return nil, err
}
if repo == nil {
return nil, nil
}
store.Lock()
defer store.Unlock()
if imgID, exists := repo[refOrID]; exists {
return store.graph.Get(imgID)
}
// If no matching tag is found, search through images for a matching image id
// iff it looks like a short ID or would look like a short ID
if stringid.IsShortID(stringid.TruncateID(refOrID)) {
for _, revision := range repo {
if strings.HasPrefix(revision, refOrID) {
return store.graph.Get(revision)
}
}
}
return nil, nil
}
// GetImageID returns an image ID corresponding to the image referred to by
// refOrID.
func (daemon *Daemon) GetImageID(refOrID string) (image.ID, error) {
id, ref, err := reference.ParseIDOrReference(refOrID)
if err != nil {
return "", err
}
if id != "" {
if _, err := daemon.imageStore.Get(image.IDFromDigest(id)); err != nil {
return "", ErrImageDoesNotExist{refOrID}
}
return image.IDFromDigest(id), nil
}
if id, err := daemon.referenceStore.Get(ref); err == nil {
return image.IDFromDigest(id), nil
}
// deprecated: repo:shortid https://github.com/docker/docker/pull/799
if tagged, ok := ref.(reference.NamedTagged); ok {
if tag := tagged.Tag(); stringid.IsShortID(stringid.TruncateID(tag)) {
if id, err := daemon.imageStore.Search(tag); err == nil {
for _, namedRef := range daemon.referenceStore.References(id.Digest()) {
if namedRef.Name() == ref.Name() {
return id, nil
}
}
}
}
}
// Search based on ID
if id, err := daemon.imageStore.Search(refOrID); err == nil {
return id, nil
}
return "", ErrImageDoesNotExist{refOrID}
}
