gohttpserver/httpserver/routes.go

package httpserver

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

func (s *server) routes() {
	s.router = mux.NewRouter()

	authMiddleware := s.AuthMiddleware()

	s.router.HandleFunc("/", s.handleIndex()).Methods("GET")

	// if you want to use a general purpose middleware (http.Handler
	// wrapper) on a specific HandleFunc route, you need to take the
	// .ServeHTTP of the http.Handler to get its HandleFunc, viz:
	s.router.HandleFunc("/login", authMiddleware(s.handleLogin()).ServeHTTP).Methods("GET")

	s.router.HandleFunc("/.well-known/healthcheck.json", s.handleHealthCheck()).Methods("GET")

	// the Gorilla mux .Use() takes a http.Handler wrapper func, like
	// most things that deal with "middlewares" like alice et c, and
	// will call ServeHTTP on it.  These middlewares applied by the mux
	// (you can .Use() more than one) will be applied to every request
	// into the service.
	s.router.Use(s.LoggingMiddleware())
}