Merge pull request #10486 from vrothberg/tag-digest-support

support tag@digest notation

pkg/api/handlers/compat/containers_create.go

@@ -71,13 +71,12 @@ func CreateContainer(w http.ResponseWriter, r *http.Request) {
 	imgNameOrID := newImage.ID()
 	// if the img had multi names with the same sha256 ID, should use the InputName, not the ID
 	if len(newImage.Names()) > 1 {
-		imageRef, err := utils.ParseDockerReference(resolvedName)
-		if err != nil {
+		if err := utils.IsRegistryReference(resolvedName); err != nil {
 			utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err)
 			return
 		}
 		// maybe the InputName has no tag, so use full name to display
-		imgNameOrID = imageRef.DockerReference().String()
+		imgNameOrID = resolvedName
 	}
 
 	sg := specgen.NewSpecGenerator(imgNameOrID, cliOpts.RootFS)

pkg/api/handlers/libpod/images.go

@@ -482,7 +482,7 @@ func PushImage(w http.ResponseWriter, r *http.Request) {
 		destination = source
 	}
 
-	if _, err := utils.ParseDockerReference(destination); err != nil {
+	if err := utils.IsRegistryReference(destination); err != nil {
 		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err)
 		return
 	}

pkg/api/handlers/libpod/images_pull.go

@@ -48,7 +48,7 @@ func ImagesPull(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Make sure that the reference has no transport or the docker one.
-	if _, err := utils.ParseDockerReference(query.Reference); err != nil {
+	if err := utils.IsRegistryReference(query.Reference); err != nil {
 		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err)
 		return
 	}

pkg/api/handlers/libpod/manifests.go

@@ -169,7 +169,7 @@ func ManifestPush(w http.ResponseWriter, r *http.Request) {
 			errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
 		return
 	}
-	if _, err := utils.ParseDockerReference(query.Destination); err != nil {
+	if err := utils.IsRegistryReference(query.Destination); err != nil {
 		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err)
 		return
 	}

pkg/api/handlers/utils/images.go

@@ -15,22 +15,19 @@ import (
 	"github.com/pkg/errors"
 )
 
-// ParseDockerReference parses the specified image name to a
-// `types.ImageReference` and enforces it to refer to a docker-transport
-// reference.
-func ParseDockerReference(name string) (types.ImageReference, error) {
-	dockerPrefix := fmt.Sprintf("%s://", docker.Transport.Name())
+// IsRegistryReference checks if the specified name points to the "docker://"
+// transport.  If it points to no supported transport, we'll assume a
+// non-transport reference pointing to an image (e.g., "fedora:latest").
+func IsRegistryReference(name string) error {
 	imageRef, err := alltransports.ParseImageName(name)
-	if err == nil && imageRef.Transport().Name() != docker.Transport.Name() {
-		return nil, errors.Errorf("reference %q must be a docker reference", name)
-	} else if err != nil {
-		origErr := err
-		imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s%s", dockerPrefix, name))
-		if err != nil {
-			return nil, errors.Wrapf(origErr, "reference %q must be a docker reference", name)
-		}
+	if err != nil {
+		// No supported transport -> assume a docker-stype reference.
+		return nil
 	}
-	return imageRef, nil
+	if imageRef.Transport().Name() == docker.Transport.Name() {
+		return nil
+	}
+	return errors.Errorf("unsupport transport %s in %q: only docker transport is supported", imageRef.Transport().Name(), name)
 }
 
 // ParseStorageReference parses the specified image name to a