text: //
  // Copyright 2022 DMetaSoul
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  //
  
  #pragma once
  
  #include <iostream>
  
  #include <gflags/gflags.h>
  
  #ifndef SPDLOG_ACTIVE_LEVEL
  #ifndef NDEBUG
  #define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_DEBUG
  #else
  #define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_INFO
  #endif
  #endif
  
  #include <spdlog/spdlog.h>
  
  #include <chrono>
  
  namespace metaspore {
  
  DECLARE_int32(log_level);
  
  class SpdlogDefault {
    public:
      SpdlogDefault() {
          spdlog::set_pattern("[%m%d-%H:%M:%S:%e][%l][T%t] %v");
          spdlog::set_level((spdlog::level::level_enum)FLAGS_log_level);
          spdlog::flush_every(std::chrono::seconds(5));
          std::cerr << "Logger macro level " << (SPDLOG_ACTIVE_LEVEL)
                    << ", runtime level: " << FLAGS_log_level << std::endl;
      }
  
      ~SpdlogDefault() { spdlog::shutdown(); }
  
      static void Init() { static SpdlogDefault logger; }
  };
  
  } // namespace metaspore