func (s *Store) Add(img *registry.Image) (err error) {
if err := s.lock(img.ID); err != nil {
return err
}
defer s.unlock(img.ID)
if s.Exists(img.ID) {
return ErrExists
}
defer func() {
if err != nil {
// cleanup if we fail
s.driver.Remove(img.ID)
}
}()
tmp, err := s.tempDir()
if err != nil {
return err
}
defer os.RemoveAll(tmp)
if err := s.driver.Create(img.ID, img.ParentID); err != nil {
return err
}
layer, err := s.driver.Get(img.ID, "")
if err != nil {
return err
}
defer s.driver.Put(img.ID)
if differ, ok := s.driver.(graphdriver.Differ); ok {
if err := differ.ApplyDiff(img.ID, img); err != nil {
return err
}
} else {
if err := archive.ApplyLayer(layer, img); err != nil {
return err
}
}
if err := ioutil.WriteFile(filepath.Join(tmp, "layersize"), []byte{'0'}, 0600); err != nil {
return err
}
f, err := os.OpenFile(filepath.Join(tmp, "json"), os.O_RDWR|os.O_CREATE, 0600)
if err != nil {
return err
}
defer f.Close()
if err := json.NewEncoder(f).Encode(img); err != nil {
return err
}
return os.Rename(tmp, s.root(img.ID))
}
func StoreImage(img *Image, jsonData []byte, layerData archive.Archive, root, layer string) error {
// Store the layer
var (
size int64
err error
driver = img.graph.driver
)
if err := os.MkdirAll(layer, 0755); err != nil {
return err
}
// If layerData is not nil, unpack it into the new layer
if layerData != nil {
if differ, ok := driver.(graphdriver.Differ); ok {
if err := differ.ApplyDiff(img.ID, layerData); err != nil {
return err
}
if size, err = differ.DiffSize(img.ID); err != nil {
return err
}
} else {
start := time.Now().UTC()
utils.Debugf("Start untar layer")
if err := archive.ApplyLayer(layer, layerData); err != nil {
return err
}
utils.Debugf("Untar time: %vs", time.Now().UTC().Sub(start).Seconds())
if img.Parent == "" {
if size, err = utils.TreeSize(layer); err != nil {
return err
}
} else {
parent, err := driver.Get(img.Parent)
if err != nil {
return err
}
defer driver.Put(img.Parent)
changes, err := archive.ChangesDirs(layer, parent)
if err != nil {
return err
}
size = archive.ChangesSize(layer, changes)
}
}
}
img.Size = size
if err := img.SaveSize(root); err != nil {
return err
}
// If raw json is provided, then use it
if jsonData != nil {
if err := ioutil.WriteFile(jsonPath(root), jsonData, 0600); err != nil {
return err
}
} else {
if jsonData, err = json.Marshal(img); err != nil {
return err
}
if err := ioutil.WriteFile(jsonPath(root), jsonData, 0600); err != nil {
return err
}
}
return nil
}