func (ls *layerStore) assembleTarTo(graphID string, metadata io.ReadCloser, size *int64, w io.Writer) error {
type diffPathDriver interface {
DiffPath(string) (string, func() error, error)
}
diffDriver, ok := ls.driver.(diffPathDriver)
if !ok {
diffDriver = &naiveDiffPathDriver{ls.driver}
}
defer metadata.Close()
// get our relative path to the container
fsPath, releasePath, err := diffDriver.DiffPath(graphID)
if err != nil {
return err
}
defer releasePath()
metaUnpacker := storage.NewJSONUnpacker(metadata)
upackerCounter := &unpackSizeCounter{metaUnpacker, size}
fileGetter := storage.NewPathFileGetter(fsPath)
logrus.Debugf("Assembling tar data for %s from %s", graphID, fsPath)
return asm.WriteOutputTarStream(fileGetter, upackerCounter, w)
}
func (c *checksums) assembleTarTo(graphID string, metadata io.ReadCloser, size *int64, w io.Writer) error {
defer metadata.Close()
// get our relative path to the container
fsPath, release, err := c.driver.Mount(graphID)
if err != nil {
return err
}
if release != nil {
defer release()
}
metaUnpacker := storage.NewJSONUnpacker(metadata)
upackerCounter := &unpackSizeCounter{metaUnpacker, size}
fileGetter := storage.NewPathFileGetter(fsPath)
logrus.Debugf("Assembling tar data for %s from %s", graphID, fsPath)
return asm.WriteOutputTarStream(fileGetter, upackerCounter, w)
}
func (ls *layerStore) assembleTarTo(graphID string, metadata io.ReadCloser, size *int64, w io.Writer) error {
diffDriver, ok := ls.driver.(graphdriver.DiffGetterDriver)
if !ok {
diffDriver = &naiveDiffPathDriver{ls.driver}
}
defer metadata.Close()
// get our relative path to the container
fileGetCloser, err := diffDriver.DiffGetter(graphID)
if err != nil {
return err
}
defer fileGetCloser.Close()
metaUnpacker := storage.NewJSONUnpacker(metadata)
upackerCounter := &unpackSizeCounter{metaUnpacker, size}
logrus.Debugf("Assembling tar data for %s", graphID)
return asm.WriteOutputTarStream(fileGetCloser, upackerCounter, w)
}
