Ejemplo n.º 1
0
// 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
}
Ejemplo n.º 2
0
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
}
Ejemplo n.º 3
0
// 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
}