PPSSimTrackProducer.cc

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// -*- C++ -*-
//
// Package:    SimPPS/PPSSimTrackProducer
// Class:      PPSSimTrackProducer
//
//
// Original Author:  Luiz Martins Mundim Filho
//         Created:  Sun, 03 Dec 2017 00:25:54 GMT
//
//
 
// system include files
#include <memory>
 
// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/stream/EDProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/Utilities/interface/EDGetToken.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "SimDataFormats/Forward/interface/LHCTransportLink.h"
#include "SimDataFormats/Forward/interface/LHCTransportLinkContainer.h"
 
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
#include "FWCore/Utilities/interface/RandomNumberGenerator.h"
 
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/StreamID.h"
#include "SimTransport/PPSProtonTransport/interface/ProtonTransport.h"
#include "TRandom3.h"
#include "IOMC/RandomEngine/src/TRandomAdaptor.h"
 
//
// class declaration
//
 
class PPSSimTrackProducer : public edm::stream::EDProducer<> {
public:
  explicit PPSSimTrackProducer(const edm::ParameterSet&);
  ~PPSSimTrackProducer() override;
 
  //static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
 
private:
  void beginStream(edm::StreamID) override;
  void produce(edm::Event&, const edm::EventSetup&) override;
  void endStream() override;
 
  // ----------member data ---------------------------
  bool m_verbosity;
  ProtonTransport* theTransporter;
  edm::InputTag m_InTag;
  edm::EDGetTokenT<edm::HepMCProduct> m_InTagToken;
 
  std::string m_transportMethod;
  int m_eventsAnalysed;  
};
 
//
// constants, enums and typedefs
//
 
//
// static data member definitions
//
 
//
// constructors and destructor
//
PPSSimTrackProducer::PPSSimTrackProducer(const edm::ParameterSet& iConfig) {
  //now do what ever other initialization is needed
  // TransportHector
  theTransporter = new ProtonTransport(iConfig);
 
  m_InTag = iConfig.getParameter<edm::InputTag>("HepMCProductLabel");
  m_InTagToken = consumes<edm::HepMCProduct>(m_InTag);
 
  m_verbosity = iConfig.getParameter<bool>("Verbosity");
  //m_transportMethod = iConfig.getParameter<std::string>("TransportMethod");
 
  produces<edm::HepMCProduct>();
  produces<edm::LHCTransportLinkContainer>();
 
  edm::Service<edm::RandomNumberGenerator> rng;
  if (!rng.isAvailable()) {
    throw cms::Exception("Configuration")
        << "LHCTransport (ProtonTransport) requires the RandomNumberGeneratorService\n"
           "which is not present in the configuration file.  You must add the service\n"
           "in the configuration file or remove the modules that require it.";
  }
}
 
PPSSimTrackProducer::~PPSSimTrackProducer() {
  // do anything here that needs to be done at destruction time
  // (e.g. close files, deallocate resources etc.)
  if (theTransporter) {
    delete theTransporter;
    theTransporter = nullptr;
  }
}
 
//
// member functions
//
 
// ------------ method called to produce the data  ------------
void PPSSimTrackProducer::produce(edm::Event& iEvent, const edm::EventSetup& iSetup) {
  using namespace edm;
  using namespace std;
  HepMC::GenEvent* evt;
  edm::Service<edm::RandomNumberGenerator> rng;
  CLHEP::HepRandomEngine* engine = &rng->getEngine(iEvent.streamID());
  if (engine->name() != "TRandom3") {
    throw cms::Exception("Configuration") << "The TRandom3 engine type must be used with ProtonTransport, Random "
                                             "Number Generator Service not correctly configured!";
  }
 
  m_eventsAnalysed++;
  Handle<HepMCProduct> HepMCEvt;
  iEvent.getByToken(m_InTagToken, HepMCEvt);
 
  if (!HepMCEvt.isValid()) {
    throw cms::Exception("InvalidReference") << "Invalid reference to HepMCProduct\n";
  }
 
  if (HepMCEvt.provenance()->moduleLabel() == "LHCTransport") {
    throw cms::Exception("LogicError") << "LHCTrasport HepMCProduce already exists\n";
  }
 
  evt = new HepMC::GenEvent(*HepMCEvt->GetEvent());
 
  //theTransporter->clear();
  theTransporter->process(evt, iSetup, engine);
 
  if (m_verbosity)
    evt->print();
 
  unique_ptr<HepMCProduct> newProduct(new edm::HepMCProduct());
  newProduct->addHepMCData(evt);
 
  iEvent.put(std::move(newProduct));
 
  unique_ptr<LHCTransportLinkContainer> NewCorrespondenceMap(new edm::LHCTransportLinkContainer());
  edm::LHCTransportLinkContainer thisLink(theTransporter->getCorrespondenceMap());
  (*NewCorrespondenceMap).swap(thisLink);
 
  if (m_verbosity) {
    for (unsigned int i = 0; i < (*NewCorrespondenceMap).size(); i++)
      LogDebug("ProtonTransportEventProcessing")
          << "ProtonTransport correspondence table: " << (*NewCorrespondenceMap)[i];
  }
 
  iEvent.put(std::move(NewCorrespondenceMap));
  // There is no need to delete the pointer to the event, since it is deleted in HepMCProduct,
  // in fact, it MUST NOT be delete here, as a protection is missing in above package
}
// The methods below are pure virtual, so it needs to be implemented even if not used
//
// ------------ method called once each stream before processing any runs, lumis or events  ------------
void PPSSimTrackProducer::beginStream(edm::StreamID) {}
 
// ------------ method called once each stream after processing all runs, lumis and events  ------------
void PPSSimTrackProducer::endStream() {}
 
// ------------ method fills 'descriptions' with the allowed parameters for the module  ------------
/*
void PPSSimTrackProducer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  //The following says we do not know what parameters are allowed so do no validation
  // Please change this to state exactly what you do use, even if it is no parameters
  edm::ParameterSetDescription desc;
  desc.setUnknown();
  descriptions.addDefault(desc);
}
*/
//define this as a plug-in
DEFINE_FWK_MODULE(PPSSimTrackProducer);