More fluent cooperation of FileServe and Routing

I have an issue where I want to serve my main AngularJS (Yeoman deployment) app folder on FileServe / but it will destroy all my router bindings. Is there any way I can reserve them and keep my routes in-tact?

In the code below I still have to go to /app and re-bind the other folders, because I don't want to temper with the Grunt file too much (yet), so added some extra backup path-bindings for the folders.

func initializeRoutes() {
// Handle all requests by serving a file of the same name
fileHandler := http.FileServer(http.Dir(*clFlagStaticDirectory))
bowerFileHandler := http.FileServer(http.Dir("../bower_components"))
imagesFileHandler := http.FileServer(http.Dir("../app/images"))
scriptsFileHandler := http.FileServer(http.Dir("../app/scripts"))
stylesFileHandler := http.FileServer(http.Dir("../app/styles"))
viewsFileHandler := http.FileServer(http.Dir("../app/views"))
// Setup routes
mainRoute := mux.NewRouter()
mainRoute.StrictSlash(true)
// mainRoute.Handle("/", http.RedirectHandler("/static/", 302))
mainRoute.PathPrefix("/app").Handler(http.StripPrefix("/app", fileHandler))
mainRoute.PathPrefix("/app/bower_components").Handler(http.StripPrefix("/bower_components", bowerFileHandler))
mainRoute.PathPrefix("/bower_components").Handler(http.StripPrefix("/bower_components", bowerFileHandler))
mainRoute.PathPrefix("/images").Handler(http.StripPrefix("/images", imagesFileHandler))
mainRoute.PathPrefix("/scripts").Handler(http.StripPrefix("/scripts", scriptsFileHandler))
mainRoute.PathPrefix("/styles").Handler(http.StripPrefix("/styles", stylesFileHandler))
mainRoute.PathPrefix("/views").Handler(http.StripPrefix("/views", viewsFileHandler))
// Basic routes
// User routes
userRoute := mainRoute.PathPrefix("/users").Subrouter()
userRoute.Handle("/login", handler(userDoLogin)).Methods("POST")
userRoute.Handle("/logout", handler(userDoLogout)).Methods("GET")
userRoute.Handle("/forgot_password", handler(forgotPassword)).Methods("POST")
// Bind API Routes
apiRoute := mainRoute.PathPrefix("/api").Subrouter()
apiProductModelRoute := apiRoute.PathPrefix("/productmodels").Subrouter()
apiProductModelRoute.Handle("/", handler(listProductModels)).Methods("GET")
apiProductModelRoute.Handle("/{id}", handler(getProductModel)).Methods("GET")
// Bind generic route
http.Handle("/", mainRoute)
}

So my goal is the serve /app as my / main path, but reserve all my Mux Routes to win over the FileServe. So if I'll have a /app/users/login folder, it won't load, but instead it will let the Router win.

Note: I'm serving purely over HTTPS and nothing over HTTP.

Thanks so much in advance! This is breaking my brain and it's the last thing I need to figure out before I can fully start on my front-end code :).

It looks for me like you want to change the order of how the routes are evaluated in a way that /users, /login, and similar are matched before the /. And the / should be server by the FileServer.

As far as I know, the routes will be matched in the order they are defined (added to the router). So you just have to move your API and other dynamic routes before /.

The following code works similar:

• the /test match is evaluated before the file server and returns the string "OK"
• then the file server returns the file under the path

Code:

package main
import (
"github.com/gorilla/mux"
"net/http"
)
func main() {
appFileHandler := http.FileServer(http.Dir("/Users/alex/Projects/tmp/so/app"))
r := mux.NewRouter()
r.PathPrefix("/test").HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
w.Write([]byte("OK"))
})
r.PathPrefix("/").Handler(appFileHandler)
http.Handle("/", r)
http.ListenAndServe(":8080", nil)
}