package graph import ( "fmt" "io" "runtime" "time" "github.com/Sirupsen/logrus" "github.com/docker/docker/api/types" ) // lookupRaw looks up an image by name in a TagStore and returns the raw JSON // describing the image. func (s *TagStore) lookupRaw(name string) ([]byte, error) { image, err := s.LookupImage(name) if err != nil || image == nil { return nil, fmt.Errorf("No such image %s", name) } imageInspectRaw, err := s.graph.RawJSON(image.ID) if err != nil { return nil, err } return imageInspectRaw, nil } // Lookup looks up an image by name in a TagStore and returns it as an // ImageInspect structure. func (s *TagStore) Lookup(name string) (*types.ImageInspect, error) { image, err := s.LookupImage(name) if err != nil || image == nil { return nil, fmt.Errorf("No such image: %s", name) } imageInspect := &types.ImageInspect{ ID: image.ID, Parent: image.Parent, Comment: image.Comment, Created: image.Created.Format(time.RFC3339Nano), Container: image.Container, ContainerConfig: &image.ContainerConfig, DockerVersion: image.DockerVersion, Author: image.Author, Config: image.Config, Architecture: image.Architecture, Os: image.OS, Size: image.Size, VirtualSize: s.graph.GetParentsSize(image) + image.Size, } imageInspect.GraphDriver.Name = s.graph.driver.String() graphDriverData, err := s.graph.driver.GetMetadata(image.ID) if err != nil { return nil, err } imageInspect.GraphDriver.Data = graphDriverData return imageInspect, nil } // ImageTarLayer return the tarLayer of the image func (s *TagStore) ImageTarLayer(name string, dest io.Writer) error { if image, err := s.LookupImage(name); err == nil && image != nil { // On Windows, the base layer cannot be exported if runtime.GOOS != "windows" || image.Parent != "" { fs, err := s.graph.TarLayer(image) if err != nil { return err } defer fs.Close() written, err := io.Copy(dest, fs) if err != nil { return err } logrus.Debugf("rendered layer for %s of [%d] size", image.ID, written) } return nil } return fmt.Errorf("No such image: %s", name) }