Initial

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

vendor/github.com/Microsoft/hcsshim/layer.go

@@ -0,0 +1,106 @@
+package hcsshim
+
+import (
+	"crypto/sha1"
+	"path/filepath"
+
+	"github.com/Microsoft/go-winio/pkg/guid"
+	"github.com/Microsoft/hcsshim/internal/wclayer"
+)
+
+func layerPath(info *DriverInfo, id string) string {
+	return filepath.Join(info.HomeDir, id)
+}
+
+func ActivateLayer(info DriverInfo, id string) error {
+	return wclayer.ActivateLayer(layerPath(&info, id))
+}
+func CreateLayer(info DriverInfo, id, parent string) error {
+	return wclayer.CreateLayer(layerPath(&info, id), parent)
+}
+
+// New clients should use CreateScratchLayer instead. Kept in to preserve API compatibility.
+func CreateSandboxLayer(info DriverInfo, layerId, parentId string, parentLayerPaths []string) error {
+	return wclayer.CreateScratchLayer(layerPath(&info, layerId), parentLayerPaths)
+}
+func CreateScratchLayer(info DriverInfo, layerId, parentId string, parentLayerPaths []string) error {
+	return wclayer.CreateScratchLayer(layerPath(&info, layerId), parentLayerPaths)
+}
+func DeactivateLayer(info DriverInfo, id string) error {
+	return wclayer.DeactivateLayer(layerPath(&info, id))
+}
+func DestroyLayer(info DriverInfo, id string) error {
+	return wclayer.DestroyLayer(layerPath(&info, id))
+}
+
+// New clients should use ExpandScratchSize instead. Kept in to preserve API compatibility.
+func ExpandSandboxSize(info DriverInfo, layerId string, size uint64) error {
+	return wclayer.ExpandScratchSize(layerPath(&info, layerId), size)
+}
+func ExpandScratchSize(info DriverInfo, layerId string, size uint64) error {
+	return wclayer.ExpandScratchSize(layerPath(&info, layerId), size)
+}
+func ExportLayer(info DriverInfo, layerId string, exportFolderPath string, parentLayerPaths []string) error {
+	return wclayer.ExportLayer(layerPath(&info, layerId), exportFolderPath, parentLayerPaths)
+}
+func GetLayerMountPath(info DriverInfo, id string) (string, error) {
+	return wclayer.GetLayerMountPath(layerPath(&info, id))
+}
+func GetSharedBaseImages() (imageData string, err error) {
+	return wclayer.GetSharedBaseImages()
+}
+func ImportLayer(info DriverInfo, layerID string, importFolderPath string, parentLayerPaths []string) error {
+	return wclayer.ImportLayer(layerPath(&info, layerID), importFolderPath, parentLayerPaths)
+}
+func LayerExists(info DriverInfo, id string) (bool, error) {
+	return wclayer.LayerExists(layerPath(&info, id))
+}
+func PrepareLayer(info DriverInfo, layerId string, parentLayerPaths []string) error {
+	return wclayer.PrepareLayer(layerPath(&info, layerId), parentLayerPaths)
+}
+func ProcessBaseLayer(path string) error {
+	return wclayer.ProcessBaseLayer(path)
+}
+func ProcessUtilityVMImage(path string) error {
+	return wclayer.ProcessUtilityVMImage(path)
+}
+func UnprepareLayer(info DriverInfo, layerId string) error {
+	return wclayer.UnprepareLayer(layerPath(&info, layerId))
+}
+
+type DriverInfo struct {
+	Flavour int
+	HomeDir string
+}
+
+type GUID [16]byte
+
+func NameToGuid(name string) (id GUID, err error) {
+	g, err := wclayer.NameToGuid(name)
+	return g.ToWindowsArray(), err
+}
+
+func NewGUID(source string) *GUID {
+	h := sha1.Sum([]byte(source))
+	var g GUID
+	copy(g[0:], h[0:16])
+	return &g
+}
+
+func (g *GUID) ToString() string {
+	return guid.FromWindowsArray(*g).String()
+}
+
+type LayerReader = wclayer.LayerReader
+
+func NewLayerReader(info DriverInfo, layerID string, parentLayerPaths []string) (LayerReader, error) {
+	return wclayer.NewLayerReader(layerPath(&info, layerID), parentLayerPaths)
+}
+
+type LayerWriter = wclayer.LayerWriter
+
+func NewLayerWriter(info DriverInfo, layerID string, parentLayerPaths []string) (LayerWriter, error) {
+	return wclayer.NewLayerWriter(layerPath(&info, layerID), parentLayerPaths)
+}
+
+type WC_LAYER_DESCRIPTOR = wclayer.WC_LAYER_DESCRIPTOR