76 lines
2 KiB
Go
76 lines
2 KiB
Go
package daemon
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import (
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"fmt"
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"github.com/docker/docker/builder"
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"github.com/docker/docker/image"
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"github.com/docker/docker/pkg/stringid"
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"github.com/docker/docker/reference"
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)
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// ErrImageDoesNotExist is error returned when no image can be found for a reference.
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type ErrImageDoesNotExist struct {
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RefOrID string
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}
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func (e ErrImageDoesNotExist) Error() string {
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return fmt.Sprintf("no such id: %s", e.RefOrID)
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}
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// GetImageID returns an image ID corresponding to the image referred to by
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// refOrID.
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func (daemon *Daemon) GetImageID(refOrID string) (image.ID, error) {
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id, ref, err := reference.ParseIDOrReference(refOrID)
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if err != nil {
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return "", err
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}
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if id != "" {
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if _, err := daemon.imageStore.Get(image.IDFromDigest(id)); err != nil {
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return "", ErrImageDoesNotExist{refOrID}
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}
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return image.IDFromDigest(id), nil
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}
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if id, err := daemon.referenceStore.Get(ref); err == nil {
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return image.IDFromDigest(id), nil
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}
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// deprecated: repo:shortid https://github.com/docker/docker/pull/799
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if tagged, ok := ref.(reference.NamedTagged); ok {
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if tag := tagged.Tag(); stringid.IsShortID(stringid.TruncateID(tag)) {
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if id, err := daemon.imageStore.Search(tag); err == nil {
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for _, namedRef := range daemon.referenceStore.References(id.Digest()) {
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if namedRef.Name() == ref.Name() {
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return id, nil
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}
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}
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}
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}
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}
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// Search based on ID
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if id, err := daemon.imageStore.Search(refOrID); err == nil {
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return id, nil
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}
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return "", ErrImageDoesNotExist{refOrID}
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}
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// GetImage returns an image corresponding to the image referred to by refOrID.
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func (daemon *Daemon) GetImage(refOrID string) (*image.Image, error) {
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imgID, err := daemon.GetImageID(refOrID)
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if err != nil {
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return nil, err
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}
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return daemon.imageStore.Get(imgID)
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}
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// GetImageOnBuild looks up a Docker image referenced by `name`.
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func (daemon *Daemon) GetImageOnBuild(name string) (builder.Image, error) {
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img, err := daemon.GetImage(name)
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if err != nil {
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return nil, err
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}
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return img, nil
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}
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