func (a *Driver) applyDiff(id string, diff archive.ArchiveReader) error {
return chrootarchive.Untar(diff, path.Join(a.rootPath(), "diff", id), nil)
}
// Loads a set of images into the repository. This is the complementary of ImageExport.
// The input stream is an uncompressed tar ball containing images and metadata.
func (s *TagStore) CmdLoad(job *engine.Job) error {
tmpImageDir, err := ioutil.TempDir("", "docker-import-")
if err != nil {
return err
}
defer os.RemoveAll(tmpImageDir)
var (
repoDir = path.Join(tmpImageDir, "repo")
)
if err := os.Mkdir(repoDir, os.ModeDir); err != nil {
return err
}
images, err := s.graph.Map()
if err != nil {
return err
}
excludes := make([]string, len(images))
i := 0
for k := range images {
excludes[i] = k
i++
}
if err := chrootarchive.Untar(job.Stdin, repoDir, &archive.TarOptions{ExcludePatterns: excludes}); err != nil {
return err
}
dirs, err := ioutil.ReadDir(repoDir)
if err != nil {
return err
}
for _, d := range dirs {
if d.IsDir() {
if err := s.recursiveLoad(job.Eng, d.Name(), tmpImageDir); err != nil {
return err
}
}
}
repositoriesJson, err := ioutil.ReadFile(path.Join(tmpImageDir, "repo", "repositories"))
if err == nil {
repositories := map[string]Repository{}
if err := json.Unmarshal(repositoriesJson, &repositories); err != nil {
return err
}
for imageName, tagMap := range repositories {
for tag, address := range tagMap {
if err := s.Set(imageName, tag, address, true); err != nil {
return err
}
}
}
} else if !os.IsNotExist(err) {
return err
}
return nil
}
// Load uploads a set of images into the repository. This is the complementary of ImageExport.
// The input stream is an uncompressed tar ball containing images and metadata.
func (s *TagStore) Load(inTar io.ReadCloser, outStream io.Writer) error {
tmpImageDir, err := ioutil.TempDir("", "docker-import-")
if err != nil {
return err
}
defer os.RemoveAll(tmpImageDir)
var (
repoDir = filepath.Join(tmpImageDir, "repo")
)
if err := os.Mkdir(repoDir, os.ModeDir); err != nil {
return err
}
images := s.graph.Map()
excludes := make([]string, len(images))
i := 0
for k := range images {
excludes[i] = k
i++
}
if err := chrootarchive.Untar(inTar, repoDir, &archive.TarOptions{ExcludePatterns: excludes}); err != nil {
return err
}
dirs, err := ioutil.ReadDir(repoDir)
if err != nil {
return err
}
for _, d := range dirs {
if d.IsDir() {
if err := s.recursiveLoad(d.Name(), tmpImageDir); err != nil {
return err
}
}
}
reposJSONFile, err := os.Open(filepath.Join(tmpImageDir, "repo", "repositories"))
if err != nil {
if !os.IsNotExist(err) {
return err
}
return nil
}
defer reposJSONFile.Close()
repositories := map[string]Repository{}
if err := json.NewDecoder(reposJSONFile).Decode(&repositories); err != nil {
return err
}
for imageName, tagMap := range repositories {
for tag, address := range tagMap {
if err := s.setLoad(imageName, tag, address, true, outStream); err != nil {
return err
}
}
}
return nil
}