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moby--moby/distribution/oci.go
Derek McGowan c4f0515837
Register OCI image media types
OCI types are backwards compatible with Docker manifest
types, however the media types must be registered.

Signed-off-by: Derek McGowan <derek@mcgstyle.net>
2018-06-28 18:19:15 -07:00

45 lines
1.5 KiB
Go

package distribution
import (
"fmt"
"github.com/docker/distribution"
"github.com/docker/distribution/manifest/manifestlist"
"github.com/docker/distribution/manifest/schema2"
digest "github.com/opencontainers/go-digest"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
func init() {
// TODO: Remove this registration if distribution is included with OCI support
ocischemaFunc := func(b []byte) (distribution.Manifest, distribution.Descriptor, error) {
m := new(schema2.DeserializedManifest)
err := m.UnmarshalJSON(b)
if err != nil {
return nil, distribution.Descriptor{}, err
}
dgst := digest.FromBytes(b)
return m, distribution.Descriptor{Digest: dgst, Size: int64(len(b)), MediaType: ocispec.MediaTypeImageManifest}, err
}
err := distribution.RegisterManifestSchema(ocispec.MediaTypeImageManifest, ocischemaFunc)
if err != nil {
panic(fmt.Sprintf("Unable to register manifest: %s", err))
}
manifestListFunc := func(b []byte) (distribution.Manifest, distribution.Descriptor, error) {
m := new(manifestlist.DeserializedManifestList)
err := m.UnmarshalJSON(b)
if err != nil {
return nil, distribution.Descriptor{}, err
}
dgst := digest.FromBytes(b)
return m, distribution.Descriptor{Digest: dgst, Size: int64(len(b)), MediaType: ocispec.MediaTypeImageIndex}, err
}
err = distribution.RegisterManifestSchema(ocispec.MediaTypeImageIndex, manifestListFunc)
if err != nil {
panic(fmt.Sprintf("Unable to register manifest: %s", err))
}
}