Negroni and Gorilla Mux with Middleware example - golang

negroniGorillaMux.go

package main

import (
  "github.com/codegangsta/negroni"
  "github.com/gorilla/mux"
)

func main() {
  router := mux.NewRouter()
  apiV1 := router.PathPrefix("/api/v1").Subrouter()
  
  NegroniRouter(apiV1, "/api/v1", "/users/create", "POST", externalLib.CreateUser, externalAuthLib.Authorize)
  
  n := negroni.Classic()
  n.UseHandler(router)
  n.Run(":3000")
}

/* Generates a negroni handler for the route:
    pathType (base+string)
    which is handled by `f` and passed through
    middleware `mids` sequentially.
    
    ex:
    NegroniRoute(router, "/api/v1", "/users/update", "POST", UserUpdateHandler, LoggingMiddleware, AuthorizationMiddleware)
*/
func NegroniRoute(m *mux.Router,
                  base string,
                  path string,
                  pathType string,
                  f func(http.ResponseWriter, *http.Request), // Your Route Handler
                  mids ...func(http.ResponseWriter, *http.Request, http.HandlerFunc) // Middlewares
                  ) {
  _routes := mux.NewRouter()
  _routes.HandleFunc(base+path, f).Methods(pathType)
  
  _n := negroni.New()
  for i: range(mids) {
    _n.Use(negroni.HandlerFunc(mids[i]))
  }
  _n.UseHandler(_routes)
  m.Handle(path, _n)
}