Method localCanonicalRootDescriptor

engine/server/resolver/resolver.go:553–575

(ctx context.Context, dgst digest.Digest)

}

func (r *Resolver) localCanonicalRootDescriptor(ctx context.Context, dgst digest.Digest) (ocispecs.Descriptor, bool, error) {
	if dgst == "" {
		return ocispecs.Descriptor{}, false, nil
	}
	ra, err := r.contentStore.ReaderAt(ctx, ocispecs.Descriptor{Digest: dgst})
	if err != nil {
		if cerrdefs.IsNotFound(err) {
			return ocispecs.Descriptor{}, false, nil
		}
		return ocispecs.Descriptor{}, false, err
	}
	defer ra.Close()

	mediaType, err := imageutil.DetectManifestMediaType(ra)
	if err != nil {
		return ocispecs.Descriptor{}, false, err
	}
	return ocispecs.Descriptor{
		Digest:    dgst,
		Size:      ra.Size(),
		MediaType: mediaType,
	}, true, nil
}

func (r *Resolver) PushImage(ctx context.Context, img *PushedImage, ref string, opts PushOpts) (rerr error) {
	span, ctx := tracing.StartSpan(ctx, "pushing "+ref, telemetry.Encapsulated())