// importLayer adds a new layer to the tag and graph store based on the given data.
func (d *Driver) importLayer(id string, layerData archive.Reader, parentLayerPaths []string) (size int64, err error) {
layerFolder := d.dir(id)
tempFolder := layerFolder + "-" + strconv.FormatUint(uint64(random.Rand.Uint32()), 10)
if err = os.MkdirAll(tempFolder, 0755); err != nil {
logrus.Errorf("Could not create %s %s", tempFolder, err)
return
}
defer func() {
_, folderName := filepath.Split(tempFolder)
if err2 := hcsshim.DestroyLayer(d.info, folderName); err2 != nil {
logrus.Warnf("Couldn't clean-up tempFolder: %s %s", tempFolder, err2)
}
}()
start := time.Now().UTC()
logrus.Debugf("Start untar layer")
if size, err = chrootarchive.ApplyLayer(tempFolder, layerData); err != nil {
return
}
logrus.Debugf("Untar time: %vs", time.Now().UTC().Sub(start).Seconds())
if err = hcsshim.ImportLayer(d.info, id, tempFolder, parentLayerPaths); err != nil {
return
}
return
}
func (d *WindowsGraphDriver) Import(id string, layerData archive.Reader, parentLayerPaths []string) (size int64, err error) {
layerFs, err := d.Get(id, "")
if err != nil {
return
}
defer func() {
if err != nil {
d.Put(id)
}
}()
tempFolder := layerFs + "-temp"
if err = os.MkdirAll(tempFolder, 0755); err != nil {
logrus.Errorf("Could not create %s %s", tempFolder, err)
return
}
defer func() {
if err2 := os.RemoveAll(tempFolder); err2 != nil {
logrus.Warnf("Couldn't clean-up tempFolder: %s %s", tempFolder, err2)
}
}()
start := time.Now().UTC()
logrus.Debugf("Start untar layer")
if size, err = chrootarchive.ApplyLayer(tempFolder, layerData); err != nil {
return
}
logrus.Debugf("Untar time: %vs", time.Now().UTC().Sub(start).Seconds())
if err = hcsshim.ImportLayer(d.info, id, tempFolder, parentLayerPaths); err != nil {
return
}
return
}
// importLayer adds a new layer to the tag and graph store based on the given data.
func (d *Driver) importLayer(id string, layerData archive.Reader, parentLayerPaths []string) (size int64, err error) {
if hcsshim.IsTP4() {
// Import from TP4 format to maintain compatibility with existing images.
var tempFolder string
tempFolder, err = ioutil.TempDir("", "hcs")
if err != nil {
return
}
defer os.RemoveAll(tempFolder)
if size, err = chrootarchive.ApplyLayer(tempFolder, layerData); err != nil {
return
}
if err = hcsshim.ImportLayer(d.info, id, tempFolder, parentLayerPaths); err != nil {
return
}
return
}
var w hcsshim.LayerWriter
w, err = hcsshim.NewLayerWriter(d.info, id, parentLayerPaths)
if err != nil {
return
}
size, err = writeLayerFromTar(layerData, w)
if err != nil {
w.Close()
return
}
err = w.Close()
if err != nil {
return
}
return
}
