NetworkReceiverModel.hpp

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#ifndef IOMANAGER_INCLUDE_IOMANAGER_NETWORK_NETWORKRECEIVERMODEL_HPP_
#define IOMANAGER_INCLUDE_IOMANAGER_NETWORK_NETWORKRECEIVERMODEL_HPP_
 
#include "iomanager/Receiver.hpp"
 
#include "ipm/Subscriber.hpp"
#include "serialization/Serialization.hpp"
 
#include <memory>
#include <string>
 
namespace dunedaq::iomanager {
 
template<typename Datatype>
class NetworkReceiverModel : public ReceiverConcept<Datatype>
{
public:
  explicit NetworkReceiverModel(ConnectionId const& conn_id);
  ~NetworkReceiverModel() { remove_callback(); }
 
  NetworkReceiverModel(NetworkReceiverModel&& other);
 
  Datatype receive(Receiver::timeout_t timeout) override;
 
  std::optional<Datatype> try_receive(Receiver::timeout_t timeout) override
  {
    return try_read_network<Datatype>(timeout);
  }
  void add_callback(std::function<void(Datatype&)> callback) override { add_callback_impl<Datatype>(callback); }
 
  void remove_callback() override;
 
  void subscribe(std::string topic) override;
  void unsubscribe(std::string topic) override;
 
private:
  void get_receiver(Receiver::timeout_t timeout);
 
  template<typename MessageType>
  typename std::enable_if<serialization::is_serializable<MessageType>::value, MessageType>::type read_network(
    Receiver::timeout_t const& timeout);
 
  template<typename MessageType>
  typename std::enable_if<!serialization::is_serializable<MessageType>::value, MessageType>::type read_network(
    Receiver::timeout_t const&);
 
  template<typename MessageType>
  typename std::enable_if<serialization::is_serializable<MessageType>::value, std::optional<MessageType>>::type
  try_read_network(Receiver::timeout_t const& timeout);
 
  template<typename MessageType>
  typename std::enable_if<!serialization::is_serializable<MessageType>::value, std::optional<MessageType>>::type
  try_read_network(Receiver::timeout_t const&);
 
  template<typename MessageType>
  typename std::enable_if<serialization::is_serializable<MessageType>::value, void>::type add_callback_impl(
    std::function<void(MessageType&)> callback);
 
  template<typename MessageType>
  typename std::enable_if<!serialization::is_serializable<MessageType>::value, void>::type add_callback_impl(
    std::function<void(MessageType&)>);
 
  std::atomic<bool> m_with_callback{ false };
  std::function<void(Datatype&)> m_callback;
  std::unique_ptr<std::thread> m_event_loop_runner;
  std::shared_ptr<ipm::Receiver> m_network_receiver_ptr{ nullptr };
  std::mutex m_callback_mutex;
  std::mutex m_receive_mutex;
};
 
} // namespace dunedaq::iomanager
 
#include "detail/NetworkReceiverModel.hxx"
 
#endif // IOMANAGER_INCLUDE_IOMANAGER_NETWORK_NETWORKRECEIVERMODEL_HPP_