package middleware import ( "log" "net/http" "time" ) func Logging(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { start := time.Now() next.ServeHTTP(w, r) log.Printf("%s %s %v", r.Method, r.URL.Path, time.Since(start)) }) } func JSONContentType(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "application/json") next.ServeHTTP(w, r) }) }