Method GetInstance

euler/client/query_proxy.h:54–59

  void RunAsyncGremlin(Query* query, DoneCallback callback);

  static QueryProxy* GetInstance() {
    if (instance_ == nullptr) {
      EULER_LOG(ERROR) << "Init failed";
    }
    return instance_;
  }

  const GraphMeta& graph_meta() const { return meta_; }