package registry import ( "encoding/json" "io" "net/http" ) // serveJSON marshals v and sets the content-type header to // 'application/json'. If a different status code is required, call // ResponseWriter.WriteHeader before this function. func serveJSON(w http.ResponseWriter, v interface{}) error { w.Header().Set("Content-Type", "application/json") enc := json.NewEncoder(w) if err := enc.Encode(v); err != nil { return err } return nil } // closeResources closes all the provided resources after running the target // handler. func closeResources(handler http.Handler, closers ...io.Closer) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { for _, closer := range closers { defer closer.Close() } handler.ServeHTTP(w, r) }) }