Go Middleware Middleware Calculate time required for handlerFunc to execute
Example
// logger middlerware that logs time taken to process each request
func Logger(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
startTime := time.Now()
h.ServeHttp(w,r)
endTime := time.Since(startTime)
log.Printf("%s %d %v", r.URL, r.Method, endTime)
})
}
func loginHandler(w http.ResponseWriter, r *http.Request) {
// Steps to login
}
func main() {
http.HandleFunc("/login", Logger(loginHandler))
http.ListenAndServe(":8080", nil)
}
