ZMQLoadBalancedConnection.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#pragma once
 
#include <framework/pcore/zmq/connections/ZMQConnection.h>
#include <framework/pcore/zmq/utils/ZMQParent.h>
 
#include <framework/pcore/zmq/messages/ZMQIdMessage.h>
#include <framework/pcore/zmq/messages/ZMQNoIdMessage.h>
 
#include <zmq.hpp>
 
#include <string>
#include <memory>
#include <set>
#include <deque>
 
namespace Belle2 {
  class ZMQLoadBalancedInput : public ZMQConnectionOverSocket {
  public:
    ZMQLoadBalancedInput(const std::string& inputAddress, unsigned int bufferSize,
                         const std::shared_ptr<ZMQParent>& parent);
 
    std::unique_ptr<ZMQNoIdMessage> handleIncomingData();
  };
 
  class ZMQLoadBalancedOutput : public ZMQConnectionOverSocket {
  public:
    ZMQLoadBalancedOutput(const std::string& outputAddress, bool lax, const std::shared_ptr<ZMQParent>& parent);
 
    void handleEvent(std::unique_ptr<ZMQNoIdMessage> message);
 
    void handleIncomingData();
    void clear();
    bool isReady() const final;
 
  protected:
    std::deque<std::string> m_readyWorkers;
    std::set<std::string> m_allWorkers;
    bool m_sentStopMessages = false;
    bool m_sentTerminateMessages = false;
    bool m_lax = false;
  };
}