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OCI media types; annotation support; oci index

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Signed-off-by: Mike Brown <brownwm@us.ibm.com>
This commit is contained in:
Mike Brown 2017-07-11 14:19:47 -05:00
parent 6fcea22b0a
commit c94f28805e
11 changed files with 102 additions and 90 deletions
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12
manifest/manifestlist/manifestlist.go
View file

@ -7,16 +7,13 @@ import (
"github.com/docker/distribution"
"github.com/docker/distribution/manifest"
"github.com/docker/distribution/manifest/ocischema"
"github.com/opencontainers/go-digest"
"github.com/opencontainers/image-spec/specs-go/v1"
)
const (
// MediaTypeManifestList specifies the mediaType for manifest lists.
MediaTypeManifestList = "application/vnd.docker.distribution.manifest.list.v2+json"
// MediaTypeOCIManifestList specifies the mediaType for OCI compliant manifest
// lists.
MediaTypeOCIManifestList = "application/vnd.oci.image.manifest.list.v1+json"
)
// SchemaVersion provides a pre-initialized version structure for this
@ -30,7 +27,7 @@ var SchemaVersion = manifest.Versioned{
// packages OCIschema version of the manifest.
var OCISchemaVersion = manifest.Versioned{
SchemaVersion: 2,
MediaType: MediaTypeOCIManifestList,
MediaType: v1.MediaTypeImageIndex,
}
func init() {
@ -92,6 +89,9 @@ type ManifestList struct {
// Config references the image configuration as a blob.
Manifests []ManifestDescriptor `json:"manifests"`
// Annotations contains arbitrary metadata for the image index.
Annotations map[string]string `json:"annotations,omitempty"`
}
// References returns the distribution descriptors for the referenced image
@ -119,7 +119,7 @@ type DeserializedManifestList struct {
// and its JSON representation.
func FromDescriptors(descriptors []ManifestDescriptor) (*DeserializedManifestList, error) {
var m ManifestList
if len(descriptors) > 0 && descriptors[0].Descriptor.MediaType == ocischema.MediaTypeManifest {
if len(descriptors) > 0 && descriptors[0].Descriptor.MediaType == v1.MediaTypeImageManifest {
m = ManifestList{
Versioned: OCISchemaVersion,
}

13
manifest/manifestlist/manifestlist_test.go
View file

@ -7,6 +7,7 @@ import (
"testing"
"github.com/docker/distribution"
"github.com/opencontainers/image-spec/specs-go/v1"
)
var expectedManifestListSerialization = []byte(`{
@ -110,9 +111,9 @@ func TestManifestList(t *testing.T) {
}
}
var expectedOCIManifestListSerialization = []byte(`{
var expectedOCIImageIndexSerialization = []byte(`{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.list.v1+json",
"mediaType": "application/vnd.oci.image.index.v1+json",
"manifests": [
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
@ -138,7 +139,7 @@ var expectedOCIManifestListSerialization = []byte(`{
]
}`)
func TestOCIManifestList(t *testing.T) {
func TestOCIImageIndex(t *testing.T) {
manifestDescriptors := []ManifestDescriptor{
{
Descriptor: distribution.Descriptor{
@ -172,7 +173,7 @@ func TestOCIManifestList(t *testing.T) {
mediaType, canonical, _ := deserialized.Payload()
if mediaType != MediaTypeOCIManifestList {
if mediaType != v1.MediaTypeImageIndex {
t.Fatalf("unexpected media type: %s", mediaType)
}
@ -187,8 +188,8 @@ func TestOCIManifestList(t *testing.T) {
}
// Check that the canonical field has the expected value.
if !bytes.Equal(expectedOCIManifestListSerialization, canonical) {
t.Fatalf("manifest bytes not equal: %q != %q", string(canonical), string(expectedOCIManifestListSerialization))
if !bytes.Equal(expectedOCIImageIndexSerialization, canonical) {
t.Fatalf("manifest bytes not equal: %q != %q", string(canonical), string(expectedOCIImageIndexSerialization))
}
var unmarshalled DeserializedManifestList