ControlInterface.hpp

#ifndef ZAO_ENDPOINT_MONITOR_CONTROL_INTERFACE_HPP_
#define ZAO_ENDPOINT_MONITOR_CONTROL_INTERFACE_HPP_
 
#include <memory>
 
namespace zao {
namespace endpoint {
namespace monitor {
 
template <class T>
class MonitorCallbackInterface;
 
class ControlCommonInterface {
 public:
  virtual void Unobserve() = 0;
 
  virtual bool IsObserving() const noexcept = 0;
 
  virtual ~ControlCommonInterface() noexcept = default;
};
 
template <class T>
class ControlInterface : public ControlCommonInterface {
 public:
  virtual void RegisterCallback(
      const std::shared_ptr<MonitorCallbackInterface<T>>& listener,
      bool use_weak_ptr = false) = 0;
 
  virtual void RegisterCallback(
      std::unique_ptr<MonitorCallbackInterface<T>>&& listener) = 0;
 
  virtual bool GetLatest(T& buffer) = 0;
 
  virtual ~ControlInterface() noexcept = default;
};
 
}  // namespace monitor
}  // namespace endpoint
}  // namespace zao
 
#endif  // ZAO_ENDPOINT_MONITOR_CONTROL_INTERFACE_HPP_