// 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.ID(id)); err != nil {
return "", ErrImageDoesNotExist{refOrID}
}
return image.ID(id), nil
}
if id, err := daemon.referenceStore.Get(ref); err == nil {
return id, nil
}
if tagged, ok := ref.(reference.NamedTagged); ok {
if id, err := daemon.imageStore.Search(tagged.Tag()); err == nil {
for _, namedRef := range daemon.referenceStore.References(id) {
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}
}
// GetImage parses input to retrieve a cached image
func (ic *ICache) GetImage(idOrRef string) (*metadata.ImageConfig, error) {
ic.m.RLock()
defer ic.m.RUnlock()
// get the full image ID if supplied a prefix
if id, err := ic.idIndex.Get(idOrRef); err == nil {
idOrRef = id
}
digest, named, err := reference.ParseIDOrReference(idOrRef)
if err != nil {
return nil, err
}
var config *metadata.ImageConfig
if digest != "" {
config, err = ic.getImageByDigest(digest)
if err != nil {
return nil, err
}
} else {
config, err = ic.getImageByNamed(named)
if err != nil {
return nil, err
}
}
if config == nil {
return nil, derr.NewRequestNotFoundError(fmt.Errorf("No such image: %s", idOrRef))
}
return copyImageConfig(config), nil
}
// Retrieve the image metadata from the image cache.
func getImageConfigFromCache(image string) (*metadata.ImageConfig, error) {
// Use docker reference code to validate the id's format
digest, named, err := reference.ParseIDOrReference(image)
if err != nil {
return nil, err
}
// Try to get the image config from our image cache
imageCache := ImageCache()
if digest != "" {
config, err := imageCache.GetImageByDigest(digest)
if err != nil {
log.Errorf("Inspect lookup failed for image %s: %s. Returning no such image.", image, err)
return nil, derr.NewRequestNotFoundError(fmt.Errorf("No such image: %s", image))
}
if config != nil {
return config, nil
}
} else {
config, err := imageCache.GetImageByNamed(named)
if err != nil {
log.Errorf("Inspect lookup failed for image %s: %s. Returning no such image.", image, err)
return nil, derr.NewRequestNotFoundError(fmt.Errorf("No such image: %s", image))
}
if config != nil {
return config, nil
}
}
return nil, derr.NewRequestNotFoundError(fmt.Errorf("No such image: %s", image))
}
func (cli *DockerCli) createContainer(config *container.Config, hostConfig *container.HostConfig, networkingConfig *networktypes.NetworkingConfig, cidfile, name string) (*types.ContainerCreateResponse, error) {
var containerIDFile *cidFile
if cidfile != "" {
var err error
if containerIDFile, err = newCIDFile(cidfile); err != nil {
return nil, err
}
defer containerIDFile.Close()
}
_, ref, err := reference.ParseIDOrReference(config.Image)
if err != nil {
return nil, err
}
if ref != nil {
ref = reference.WithDefaultTag(ref)
}
//create the container
response, err := cli.client.ContainerCreate(context.Background(), config, hostConfig, networkingConfig, name)
//if image not found try to pull it
if err != nil {
if client.IsErrImageNotFound(err) && ref != nil {
fmt.Fprintf(cli.err, "Unable to find image '%s' locally\n", ref.String())
// we don't want to write to stdout anything apart from container.ID
if err = cli.pullImageCustomOut(config.Image, cli.err); err != nil {
return nil, err
}
// Retry
var retryErr error
response, retryErr = cli.client.ContainerCreate(context.Background(), config, hostConfig, networkingConfig, name)
if retryErr != nil {
return nil, retryErr
}
} else {
return nil, err
}
}
for _, warning := range response.Warnings {
fmt.Fprintf(cli.err, "WARNING: %s\n", warning)
}
if containerIDFile != nil {
if err = containerIDFile.Write(response.ID); err != nil {
return nil, err
}
}
return &response, nil
}
// Get parses input to retrieve a cached image
func (ic *ICache) Get(idOrRef string) (*metadata.ImageConfig, error) {
defer trace.End(trace.Begin(""))
ic.m.RLock()
defer ic.m.RUnlock()
// cover the case of creating by a full reference
if config, ok := ic.cacheByName[idOrRef]; ok {
return config, nil
}
// get the full image ID if supplied a prefix
if id, err := ic.iDIndex.Get(idOrRef); err == nil {
idOrRef = id
}
imgDigest, named, err := reference.ParseIDOrReference(idOrRef)
if err != nil {
return nil, err
}
var config *metadata.ImageConfig
if imgDigest != "" {
config = ic.getImageByDigest(imgDigest)
} else {
config = ic.getImageByNamed(named)
}
if config == nil {
// docker automatically prints out ":latest" tag if not specified in case if image is not found.
postfixLatest := ""
if !strings.Contains(idOrRef, ":") {
postfixLatest += ":" + reference.DefaultTag
}
return nil, derr.NewRequestNotFoundError(fmt.Errorf(
"No such image: %s%s", idOrRef, postfixLatest))
}
return copyImageConfig(config), 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}
}
func (l *tarexporter) parseNames(names []string) (map[image.ID]*imageDescriptor, error) {
imgDescr := make(map[image.ID]*imageDescriptor)
addAssoc := func(id image.ID, ref reference.Named) {
if _, ok := imgDescr[id]; !ok {
imgDescr[id] = &imageDescriptor{}
}
if ref != nil {
var tagged reference.NamedTagged
if _, ok := ref.(reference.Canonical); ok {
return
}
var ok bool
if tagged, ok = ref.(reference.NamedTagged); !ok {
var err error
if tagged, err = reference.WithTag(ref, reference.DefaultTag); err != nil {
return
}
}
for _, t := range imgDescr[id].refs {
if tagged.String() == t.String() {
return
}
}
imgDescr[id].refs = append(imgDescr[id].refs, tagged)
}
}
for _, name := range names {
id, ref, err := reference.ParseIDOrReference(name)
if err != nil {
return nil, err
}
if id != "" {
_, err := l.is.Get(image.ID(id))
if err != nil {
return nil, err
}
addAssoc(image.ID(id), nil)
continue
}
if ref.Name() == string(digest.Canonical) {
imgID, err := l.is.Search(name)
if err != nil {
return nil, err
}
addAssoc(imgID, nil)
continue
}
if reference.IsNameOnly(ref) {
assocs := l.rs.ReferencesByName(ref)
for _, assoc := range assocs {
addAssoc(assoc.ImageID, assoc.Ref)
}
if len(assocs) == 0 {
imgID, err := l.is.Search(name)
if err != nil {
return nil, err
}
addAssoc(imgID, nil)
}
continue
}
var imgID image.ID
if imgID, err = l.rs.Get(ref); err != nil {
return nil, err
}
addAssoc(imgID, ref)
}
return imgDescr, nil
}
func createContainer(ctx context.Context, dockerCli *command.DockerCli, config *container.Config, hostConfig *container.HostConfig, networkingConfig *networktypes.NetworkingConfig, cidfile, name string) (*types.ContainerCreateResponse, error) {
stderr := dockerCli.Err()
var containerIDFile *cidFile
if cidfile != "" {
var err error
if containerIDFile, err = newCIDFile(cidfile); err != nil {
return nil, err
}
defer containerIDFile.Close()
}
var trustedRef reference.Canonical
_, ref, err := reference.ParseIDOrReference(config.Image)
if err != nil {
return nil, err
}
if ref != nil {
ref = reference.WithDefaultTag(ref)
if ref, ok := ref.(reference.NamedTagged); ok && command.IsTrusted() {
var err error
trustedRef, err = image.TrustedReference(ctx, dockerCli, ref)
if err != nil {
return nil, err
}
config.Image = trustedRef.String()
}
}
//create the container
response, err := dockerCli.Client().ContainerCreate(ctx, config, hostConfig, networkingConfig, name)
//if image not found try to pull it
if err != nil {
if apiclient.IsErrImageNotFound(err) && ref != nil {
fmt.Fprintf(stderr, "Unable to find image '%s' locally\n", ref.String())
// we don't want to write to stdout anything apart from container.ID
if err = pullImage(ctx, dockerCli, config.Image, stderr); err != nil {
return nil, err
}
if ref, ok := ref.(reference.NamedTagged); ok && trustedRef != nil {
if err := image.TagTrusted(ctx, dockerCli, trustedRef, ref); err != nil {
return nil, err
}
}
// Retry
var retryErr error
response, retryErr = dockerCli.Client().ContainerCreate(ctx, config, hostConfig, networkingConfig, name)
if retryErr != nil {
return nil, retryErr
}
} else {
return nil, err
}
}
for _, warning := range response.Warnings {
fmt.Fprintf(stderr, "WARNING: %s\n", warning)
}
if containerIDFile != nil {
if err = containerIDFile.Write(response.ID); err != nil {
return nil, err
}
}
return &response, nil
}