How can I handle http requests of different methods to / in Go?

Solution 1:

To ensure that you only serve the root: You're doing the right thing. In some cases you would want to call the ServeHttp method of an http.FileServer object instead of calling NotFound; it depends whether you have miscellaneous files that you want to serve as well.

To handle different methods differently: Many of my HTTP handlers contain nothing but a switch statement like this:

switch r.Method {
case http.MethodGet:
    // Serve the resource.
case http.MethodPost:
    // Create a new record.
case http.MethodPut:
    // Update an existing record.
case http.MethodDelete:
    // Remove the record.
default:
    http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
}

Of course, you may find that a third-party package like gorilla works better for you.

Solution 2:

eh, I was actually heading to bed and thus the quick comment on looking at http://www.gorillatoolkit.org/pkg/mux which is really nice and does what you want, just give the docs a look over. For example

func main() {
    r := mux.NewRouter()
    r.HandleFunc("/", HomeHandler)
    r.HandleFunc("/products", ProductsHandler)
    r.HandleFunc("/articles", ArticlesHandler)
    http.Handle("/", r)
}

and

r.HandleFunc("/products", ProductsHandler).
    Host("www.domain.com").
    Methods("GET").
    Schemes("http")

and many other possibilities and ways to perform the above operations.

But I felt a need to address the other part of the question, "Is this the best I can do". If the std lib is a little too bare, a great resource to check out is here: https://github.com/golang/go/wiki/Projects#web-libraries (linked specifically to web libraries).