feat: add Domain/host based request routing

pkg/config.go

@@ -105,6 +105,8 @@ type Route struct {
 	Name string `yaml:"name"`
 	// Path defines route path
 	Path string `yaml:"path"`
+	//Host Domain/host based request routing
+	Host string `yaml:"host"`
 	// Rewrite rewrites route path to desired path
 	//
 	// E.g. /cart to / => It will rewrite /cart path to /
@@ -247,6 +249,7 @@ func initConfig(configFile string) {
 			Routes: []Route{
 				{
 					Name:        "HealthCheck",
+					Host:        "localhost",
 					Path:        "/public",
 					Destination: "http://localhost:80",
 					Rewrite:     "/healthz",

pkg/route.go

@@ -120,10 +120,14 @@ func (gatewayServer GatewayServer) Initialize() *mux.Router {
 				disableXForward: route.DisableHeaderXForward,
 				cors:            route.Cors,
 			}
-
 			router := r.PathPrefix(route.Path).Subrouter()
 			router.Use(CORSHandler(route.Cors))
-			router.PathPrefix("").Handler(proxyRoute.ProxyHandler())
+			//Domain/host based request routing
+			if route.Host != "" {
+				router.Host(route.Host).PathPrefix("").Handler(proxyRoute.ProxyHandler())
+			} else {
+				router.PathPrefix("").Handler(proxyRoute.ProxyHandler())
+			}
 		} else {
 			logger.Error("Error, path is empty in route %s", route.Name)
 			logger.Info("Route path ignored: %s", route.Path)