Exclude a ping from the rest of the middlewares processing / Negroni / Gorilla

main.go

package main

import (
        "fmt"
        "github.com/gorilla/mux"
        "github.com/urfave/negroni"
        "net/http"
)

type ping struct {
        Path  string
        Reply string
}

func (p *ping) ServeHTTP(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
        if r.URL.Path == p.Path {
                fmt.Fprintf(w, p.Reply)
        } else {
                next(w, r)
        }
}

func main() {
        r := mux.NewRouter()
        r.HandleFunc("/test", func(w http.ResponseWriter, r *http.Request) {
                fmt.Fprintf(w, "test")
        })

        n := negroni.New()
        n.Use(negroni.NewRecovery())
        n.Use(&ping{"/ping", "pong"})
        n.Use(negroni.NewLogger())
        n.UseHandler(r)

        http.ListenAndServe(":3000", n)
}