BunchSpacingProducer.cc

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#include "FWCore/Framework/interface/stream/EDProducer.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/LuminosityBlock.h"
#include "FWCore/Framework/interface/Run.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include <iostream>

namespace edm {
  class EventSetup;
}

//
// class declaration
//
class BunchSpacingProducer : public edm::stream::EDProducer<> {
public:
  explicit BunchSpacingProducer(const edm::ParameterSet&);

  ~BunchSpacingProducer() override;

  void produce(edm::Event&, const edm::EventSetup&) final;

  static void fillDescriptions(edm::ConfigurationDescriptions&);

private:
  edm::EDGetTokenT<int> bunchSpacing_;
  unsigned int bunchSpacingOverride_;
  bool overRide_;
};

//
// constructors and destructor
//

BunchSpacingProducer::BunchSpacingProducer::BunchSpacingProducer(const edm::ParameterSet& iConfig) {
  // register your products
  produces<unsigned int>();
  bunchSpacing_ = consumes<int>(edm::InputTag("addPileupInfo", "bunchSpacing"));
  overRide_ = iConfig.getParameter<bool>("overrideBunchSpacing");
  bunchSpacingOverride_ = iConfig.getParameter<unsigned int>("bunchSpacingOverride");
}

BunchSpacingProducer::~BunchSpacingProducer() {}

//
// member functions
//
void BunchSpacingProducer::produce(edm::Event& e, const edm::EventSetup& iSetup) {
  if (overRide_) {
    e.put(std::make_unique<unsigned int>(bunchSpacingOverride_));
    return;
  }

  unsigned int bunchSpacing = 50;
  unsigned int run = e.run();

  if (e.isRealData()) {
    if ((run > 252126 && run != 254833) || run == 178003 || run == 178004 || run == 209089 || run == 209106 ||
        run == 209109 || run == 209146 || run == 209148 || run == 209151) {
      bunchSpacing = 25;
    }
  } else {
    edm::Handle<int> bunchSpacingH;
    e.getByToken(bunchSpacing_, bunchSpacingH);
    bunchSpacing = *bunchSpacingH;
  }

  e.put(std::make_unique<unsigned int>(bunchSpacing));
  return;
}

void BunchSpacingProducer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  edm::ParameterSetDescription desc;
  desc.add<bool>("overrideBunchSpacing", false);       // true for prompt reco
  desc.add<unsigned int>("bunchSpacingOverride", 25);  // override value

  descriptions.add("BunchSpacingProducer", desc);
}

#include "FWCore/Framework/interface/MakerMacros.h"
DEFINE_FWK_MODULE(BunchSpacingProducer);