Add initial framework for quota

pkg/api/api_generic_handlers.go

@@ -145,3 +145,16 @@ func ignoreUnImplementedObjectResources(req *http.Request) bool {
 	}
 	return false
 }
+
+type quotaHandler struct {
+	handler http.Handler
+}
+
+func (h quotaHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	h.handler.ServeHTTP(w, req)
+}
+
+// QuotaHandler implements quotas
+func QuotaHandler(h http.Handler) http.Handler {
+	return quotaHandler{handler: h}
+}

pkg/api/api_router.go

@@ -89,5 +89,7 @@ func HTTPHandler(domain string, driver drivers.Driver) http.Handler {
 		log.Fatal(iodine.New(err, map[string]string{"domain": domain}))
 	}
 
-	return validateHandler(conf, ignoreResourcesHandler(mux))
+	h := validateHandler(conf, ignoreResourcesHandler(mux))
+	// quota handler is always last
+	return QuotaHandler(h)
 }