优化结构

internal/data/runtime_clients.go

@@ -36,6 +36,17 @@ func (r *reloadableMongo) replace(client *mongo.Client) {
 	}
 	r.mu.Unlock()
 }
+
+func (r *reloadableMongo) load() *mongo.Client {
+	if r == nil {
+		return nil
+	}
+	r.mu.RLock()
+	client := r.current
+	r.mu.RUnlock()
+	return client
+}
+
 func (r *reloadableMongo) close() {
 	r.mu.Lock()
 	all := append([]*mongo.Client{r.current}, r.retired...)