message: [sql_db_plugin] name refactoring
diff: @@ -15,7 +15,7 @@ template<typename T>
  class consumer final : public boost::noncopyable
  {
  public:
  - consumer(std::unique_ptr<consumer_core<T>> c);
  + consumer(std::unique_ptr<consumer_core<T>> core);
  ~consumer();
  void push(const T& element);
  @@ -24,15 +24,15 @@ private:
  void run();
  fifo<T> m_fifo;
  - std::unique_ptr<consumer_core<T>> m_consumer;
  + std::unique_ptr<consumer_core<T>> m_core;
  std::atomic<bool> m_exit;
  std::unique_ptr<std::thread> m_thread;
  };
  template<typename T>
  -consumer<T>::consumer(std::unique_ptr<consumer_core<T> > c):
  +consumer<T>::consumer(std::unique_ptr<consumer_core<T> > core):
  m_fifo(fifo<T>::behavior::blocking),
  - m_consumer(std::move(c)),
  + m_core(std::move(c)),
  m_exit(false),
  m_thread(std::make_unique<std::thread>([&]{this->run();}))
  {
  @@ -60,7 +60,7 @@ void consumer<T>::run()
  while (!m_exit)
  {
  auto elements = m_fifo.pop_all();
  - m_consumer->consume(elements);
  + m_core->consume(elements);
  }
  dlog("Consumer thread End");
  }
  