bring back /images/viz, but 404 for latest

api.go

@@ -203,6 +203,18 @@ func getImagesJSON(srv *Server, version float64, w http.ResponseWriter, r *http.
 	}
 }
 
+func getImagesViz(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
+	if version > 1.6 {
+		w.WriteHeader(http.StatusNotFound)
+		return fmt.Errorf("This is now implemented in the client.")
+	}
+
+	if err := srv.ImagesViz(w); err != nil {
+		return err
+	}
+	return nil
+}
+
 func getInfo(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
 	return writeJSON(w, http.StatusOK, srv.DockerInfo())
 }
@@ -1039,6 +1051,7 @@ func createRouter(srv *Server, logging bool) (*mux.Router, error) {
 			"/info":                           getInfo,
 			"/version":                        getVersion,
 			"/images/json":                    getImagesJSON,
+			"/images/viz":                     getImagesViz,
 			"/images/search":                  getImagesSearch,
 			"/images/{name:.*}/history":       getImagesHistory,
 			"/images/{name:.*}/json":          getImagesByName,

server.go

@@ -233,6 +233,44 @@ func (srv *Server) ImageInsert(name, url, path string, out io.Writer, sf *utils.
 	return img.ShortID(), nil
 }
 
+func (srv *Server) ImagesViz(out io.Writer) error {
+	images, _ := srv.runtime.graph.Map()
+	if images == nil {
+		return nil
+	}
+	out.Write([]byte("digraph docker {\n"))
+
+	var (
+		parentImage *Image
+		err         error
+	)
+	for _, image := range images {
+		parentImage, err = image.GetParent()
+		if err != nil {
+			return fmt.Errorf("Error while getting parent image: %v", err)
+		}
+		if parentImage != nil {
+			out.Write([]byte(" \"" + parentImage.ShortID() + "\" -> \"" + image.ShortID() + "\"\n"))
+		} else {
+			out.Write([]byte(" base -> \"" + image.ShortID() + "\" [style=invis]\n"))
+		}
+	}
+
+	reporefs := make(map[string][]string)
+
+	for name, repository := range srv.runtime.repositories.Repositories {
+		for tag, id := range repository {
+			reporefs[utils.TruncateID(id)] = append(reporefs[utils.TruncateID(id)], fmt.Sprintf("%s:%s", name, tag))
+		}
+	}
+
+	for id, repos := range reporefs {
+		out.Write([]byte(" \"" + id + "\" [label=\"" + id + "\\n" + strings.Join(repos, "\\n") + "\",shape=box,fillcolor=\"paleturquoise\",style=\"filled,rounded\"];\n"))
+	}
+	out.Write([]byte(" base [style=invisible]\n}\n"))
+	return nil
+}
+
 func (srv *Server) Images(all bool, filter string) ([]APIImages, error) {
 	var (
 		allImages map[string]*Image