func (srv *Server) pushImage(r *registry.Registry, out io.Writer, remote, imgId, ep string, token []string) error {
out = utils.NewWriteFlusher(out)
jsonRaw, err := ioutil.ReadFile(path.Join(srv.runtime.graph.Root, imgId, "json"))
if err != nil {
return fmt.Errorf("Error while retreiving the path for {%s}: %s", imgId, err)
}
fmt.Fprintf(out, "Pushing %s\r\n", imgId)
// Make sure we have the image's checksum
checksum, err := srv.getChecksum(imgId)
if err != nil {
return err
}
imgData := ®istry.ImgData{
Id: imgId,
Checksum: checksum,
}
// Send the json
if err := r.PushImageJsonRegistry(imgData, jsonRaw, ep, token); err != nil {
if err == registry.ErrAlreadyExists {
fmt.Fprintf(out, "Image %s already uploaded ; skipping\n", imgData.Id)
return nil
}
return err
}
// Retrieve the tarball to be sent
var layerData *TempArchive
// If the archive exists, use it
file, err := os.Open(layerArchivePath(srv.runtime.graph.imageRoot(imgId)))
if err != nil {
if os.IsNotExist(err) {
// If the archive does not exist, create one from the layer
layerData, err = srv.runtime.graph.TempLayerArchive(imgId, Xz, out)
if err != nil {
return fmt.Errorf("Failed to generate layer archive: %s", err)
}
} else {
return err
}
} else {
defer file.Close()
st, err := file.Stat()
if err != nil {
return err
}
layerData = &TempArchive{
File: file,
Size: st.Size(),
}
}
// Send the layer
if err := r.PushImageLayerRegistry(imgData.Id, utils.ProgressReader(layerData, int(layerData.Size), out, "", false), ep, token); err != nil {
return err
}
return nil
}