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package images // import "github.com/docker/docker/daemon/images"
import (
"github.com/docker/distribution/reference"
"github.com/docker/docker/image"
)
// TagImage creates the tag specified by newTag, pointing to the image named
// imageName (alternatively, imageName can also be an image ID).
func (i *ImageService) TagImage(imageName, repository, tag string) (string, error) {
img, err := i.GetImage(imageName, nil)
if err != nil {
return "", err
}
newTag, err := reference.ParseNormalizedNamed(repository)
if err != nil {
return "", err
}
if tag != "" {
if newTag, err = reference.WithTag(reference.TrimNamed(newTag), tag); err != nil {
return "", err
}
}
err = i.TagImageWithReference(img.ID(), newTag)
return reference.FamiliarString(newTag), err
}
// TagImageWithReference adds the given reference to the image ID provided.
func (i *ImageService) TagImageWithReference(imageID image.ID, newTag reference.Named) error {
if err := i.referenceStore.AddTag(newTag, imageID.Digest(), true); err != nil {
return err
}
if err := i.imageStore.SetLastUpdated(imageID); err != nil {
return err
}
i.LogImageEvent(imageID.String(), reference.FamiliarString(newTag), "tag")
return nil
}
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