CSCFakeDBGains.h

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#ifndef _CSCFAKEDBGAINS_H
#define _CSCFAKEDBGAINS_H

#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/ESProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/EventSetupRecordIntervalFinder.h"
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Framework/interface/SourceFactory.h"
#include <memory>

#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "CondFormats/CSCObjects/interface/CSCDBGains.h"
#include "CondFormats/DataRecord/interface/CSCDBGainsRcd.h"
#include <DataFormats/MuonDetId/interface/CSCDetId.h>

class CSCFakeDBGains : public edm::ESProducer, public edm::EventSetupRecordIntervalFinder {
public:
  CSCFakeDBGains(const edm::ParameterSet &);
  ~CSCFakeDBGains() override;

  inline static CSCDBGains *prefillDBGains();

  typedef std::unique_ptr<CSCDBGains> Pointer;
  Pointer produceDBGains(const CSCDBGainsRcd &);

private:
  void setIntervalFor(const edm::eventsetup::EventSetupRecordKey &,
                      const edm::IOVSyncValue &,
                      edm::ValidityInterval &) override;

  // member data
  Pointer cndbGains;
};

#include <fstream>
#include <iostream>
#include <vector>

// to workaround plugin library
inline CSCDBGains *CSCFakeDBGains::prefillDBGains() {
  int seed;
  float mean;
  const int MAX_SIZE = 217728;  // or 252288 for ME4/2 chambers
  const int FACTOR = 1000;

  CSCDBGains *cndbgains = new CSCDBGains();
  cndbgains->gains.resize(MAX_SIZE);

  seed = 10000;
  srand(seed);
  mean = 6.8;
  cndbgains->factor_gain = int(FACTOR);

  for (int i = 0; i < MAX_SIZE; i++) {
    cndbgains->gains[i].gain_slope =
        (short int)(((double)rand() / ((double)(RAND_MAX) + (double)(1))) + mean * FACTOR + 0.5);
  }
  return cndbgains;
}

#endif