ZMQHistogramOutput.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 <daq/hbasf2/connections/ZMQHistogramConnection.h>
#include <daq/hbasf2/utils/HistogramMapping.h>
 
#include <framework/pcore/zmq/messages/ZMQIdMessage.h>
 
#include <framework/pcore/EvtMessage.h>
 
#include <TBufferJSON.h>
 
#include <lz4.h>
#include <TH1.h>
 
#include <zmq.hpp>
 
#include <string>
#include <memory>
#include <map>
#include <optional>
 
namespace Belle2 {
  template<class AConnectionClass>
  class ZMQHistogramOutput : public AConnectionClass {
  public:
    template<class... Args>
    ZMQHistogramOutput(unsigned int maximalUncompressedBufferSize, Args&& ... args);

    void handleEvent(std::unique_ptr<ZMQIdMessage> message);
    void mergeAndSend(EMessageTypes messageType = EMessageTypes::c_eventMessage);
    void clear();
 
  private:
    unsigned int m_maximalUncompressedBufferSize;

    std::map<std::string, HistogramMapping> m_storedMessages;
    std::vector<char> m_uncompressedBuffer;

    std::optional<int> m_storedExperiment = {};
    std::optional<int> m_storedRun = {};
  };
 
  template<class AConnectionClass>
  template<class... Args>
  ZMQHistogramOutput<AConnectionClass>::ZMQHistogramOutput(unsigned int maximalUncompressedBufferSize,
                                                           Args&& ... args) : AConnectionClass(std::forward<Args>(args)...), m_maximalUncompressedBufferSize(
                                                               maximalUncompressedBufferSize)
  {
    m_uncompressedBuffer.reserve(m_maximalUncompressedBufferSize);
 
    AConnectionClass::log("uncompressed_size", 0.0);
    AConnectionClass::log("stored_identities", 0l);
    AConnectionClass::log("histogram_clears", 0l);
    AConnectionClass::log("last_clear", "");
  }
 
  using ZMQHistoServerToFile = ZMQHistogramOutput<ZMQHistoServerToFileOutput>;
  using ZMQHistoServerToZMQ = ZMQHistogramOutput<ZMQHistoServerToZMQOutput>;
  using ZMQHistoServerToRaw = ZMQHistogramOutput<ZMQHistoServerToRawOutput>;
}