MuonGeometryConstantsESModule.cc

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#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "FWCore/Framework/interface/ModuleFactory.h"
#include "FWCore/Framework/interface/ESProducer.h"
#include "FWCore/Framework/interface/ESTransientHandle.h"
#include "DetectorDescription/Core/interface/DDCompactView.h"
#include "DetectorDescription/DDCMS/interface/DDCompactView.h"
#include "Geometry/Records/interface/IdealGeometryRecord.h"
#include "Geometry/MuonNumbering/interface/MuonGeometryConstants.h"
#include "Geometry/MuonNumbering/plugins/MuonGeometryConstantsBuild.h"

#include <memory>

//#define EDM_ML_DEBUG

class MuonGeometryConstantsESModule : public edm::ESProducer {
public:
  MuonGeometryConstantsESModule(const edm::ParameterSet&);

  using ReturnType = std::unique_ptr<MuonGeometryConstants>;

  static void fillDescriptions(edm::ConfigurationDescriptions&);

  ReturnType produce(const IdealGeometryRecord&);

private:
  edm::ESGetToken<DDCompactView, IdealGeometryRecord> cpvTokenDDD_;
  edm::ESGetToken<cms::DDCompactView, IdealGeometryRecord> cpvTokenDD4hep_;
  bool fromDD4hep_;
};

MuonGeometryConstantsESModule::MuonGeometryConstantsESModule(const edm::ParameterSet& ps) {
  fromDD4hep_ = ps.getParameter<bool>("fromDD4hep");
  auto cc = setWhatProduced(this);
  if (fromDD4hep_)
    cpvTokenDD4hep_ = cc.consumesFrom<cms::DDCompactView, IdealGeometryRecord>(edm::ESInputTag());
  else
    cpvTokenDDD_ = cc.consumesFrom<DDCompactView, IdealGeometryRecord>(edm::ESInputTag());

#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("MuonGeom") << "MuonGeometryConstantsESModule::MuonGeometryConstantsESModule called with dd4hep: "
                               << fromDD4hep_;
#endif
}

void MuonGeometryConstantsESModule::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  edm::ParameterSetDescription desc;
  desc.add<bool>("fromDD4hep", false);
  descriptions.add("muonGeometryConstants", desc);
}

MuonGeometryConstantsESModule::ReturnType MuonGeometryConstantsESModule::produce(const IdealGeometryRecord& iRecord) {
  edm::LogInfo("MuonGeom") << "MuonGeometryConstantsESModule::produce(const IdealGeometryRecord& iRecord)";

  auto ptp = std::make_unique<MuonGeometryConstants>();
  MuonGeometryConstantsBuild builder;

  if (fromDD4hep_) {
#ifdef EDM_ML_DEBUG
    edm::LogVerbatim("MuonGeom") << "MuonGeometryConstantsESModule::Try to access cms::DDCompactView";
#endif
    edm::ESTransientHandle<cms::DDCompactView> cpv = iRecord.getTransientHandle(cpvTokenDD4hep_);
    builder.build(&(*cpv), *ptp);
  } else {
#ifdef EDM_ML_DEBUG
    edm::LogVerbatim("MuonGeom") << "MuonGeometryConstantsESModule::Try to access DDCompactView";
#endif
    edm::ESTransientHandle<DDCompactView> cpv = iRecord.getTransientHandle(cpvTokenDDD_);
    builder.build(&(*cpv), *ptp);
  }

  return ptp;
}

DEFINE_FWK_EVENTSETUP_MODULE(MuonGeometryConstantsESModule);