Added Martini example

examples/martini-example/README.md

@@ -0,0 +1,10 @@
+# Negroni example
+
+This is an example of how to use the middleware with Martini.
+
+# Using it
+
+To try this out, first install all dependencies with `go install` and then run `go run main.go` to start the app.
+
+* Call `http://localhost:3001/ping` to get a JSon response without the need of a JWT.
+* Call `http://localhost:3001/secured/ping` with a JWT signed with `My Secret` to get a response back.

examples/martini-example/main.go

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+package main
+
+import (
+        "encoding/json"
+        "github.com/auth0/go-jwt-middleware"
+        "github.com/go-martini/martini"
+        "github.com/dgrijalva/jwt-go"
+        "net/http"
+)
+
+func main() {
+
+        StartServer()
+
+}
+
+func StartServer() {
+        m := martini.Classic()
+
+        jwtMiddleware := jwtmiddleware.New(jwtmiddleware.Options{
+                ValidationKeyGetter: func(token *jwt.Token) (interface{}, error) {
+                        return []byte("My Secret"), nil
+                },
+        });
+
+        m.Get("/ping", PingHandler);
+        m.Get("/secured/ping", jwtMiddleware.CheckJWT, SecuredPingHandler);
+
+        m.Run();
+}
+
+type Response struct {
+        Text string `json:"text"`
+}
+
+func respondJson(text string, w http.ResponseWriter) {
+        response := Response{text}
+
+        jsonResponse, err := json.Marshal(response)
+        if err != nil {
+                http.Error(w, err.Error(), http.StatusInternalServerError)
+                return
+        }
+
+        w.Header().Set("Content-Type", "application/json")
+        w.Write(jsonResponse)
+}
+
+func PingHandler(w http.ResponseWriter, r *http.Request) {
+        respondJson("All good. You don't need to be authenticated to call this", w)
+}
+
+func SecuredPingHandler(w http.ResponseWriter, r *http.Request) {
+        respondJson("All good. You only get this message if you're authenticated", w)
+}