Function readLayerContent

pkg/cmd/image/import.go:278–290

(ctx context.Context, cs content.Store, layerDigest digest.Digest, size int64)

}

func readLayerContent(ctx context.Context, cs content.Store, layerDigest digest.Digest, size int64) ([]byte, error) {
	ra, err := cs.ReaderAt(ctx, ocispec.Descriptor{Digest: layerDigest, Size: size})
	if err != nil {
		return nil, err
	}
	defer ra.Close()

	layerContent := make([]byte, size)
	if _, err := ra.ReadAt(layerContent, 0); err != nil {
		return nil, err
	}
	return layerContent, nil
}

func buildDockerArchive(configJSON []byte, configDigest digest.Digest, layerContent []byte, layerDigest digest.Digest, prefix string) (io.ReadCloser, error) {
	layerFileName := layerDigest.Encoded() + ".tar.gz"