router: added middlewares

app/router/loggingmw.go

@@ -0,0 +1,27 @@
+package router
+
+func NewLoggingMiddleware(print func(string, ...any)) MiddlewareFunc {
+	mw := func(next Handler) Handler {
+		return newLoggingHandler(next, print)
+	}
+	return mw
+}
+
+type loggingHandler struct {
+	next      Handler
+	printFunc func(string, ...any)
+}
+
+func newLoggingHandler(next Handler, print func(string, ...any)) *loggingHandler {
+	return &loggingHandler{
+		next:      next,
+		printFunc: print,
+	}
+}
+
+func (logging loggingHandler) ServeHTTP(rctx *Context) {
+	logging.next.ServeHTTP(rctx)
+	logging.printFunc("%s %s %s %s %d", rctx.Request.RemoteAddr,
+		rctx.Request.Method, rctx.Request.URL.String(),
+		rctx.Request.Proto, rctx.StatusCode)
+}