CTPPSDiamondRecHitProducer.cc

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/****************************************************************************
 *
 * This is a part of CTPPS offline software.
 * Authors:
 *   Laurent Forthomme (laurent.forthomme@cern.ch)
 *   Nicola Minafra (nicola.minafra@cern.ch)
 *
 ****************************************************************************/

#include <memory>

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

#include "DataFormats/Common/interface/DetSetVector.h"
#include "DataFormats/Common/interface/DetSet.h"

#include "DataFormats/CTPPSDetId/interface/CTPPSDiamondDetId.h"
#include "DataFormats/CTPPSDigi/interface/CTPPSDiamondDigi.h"
#include "DataFormats/CTPPSReco/interface/CTPPSDiamondRecHit.h"

#include "RecoCTPPS/TotemRPLocal/interface/CTPPSDiamondRecHitProducerAlgorithm.h"

#include "Geometry/Records/interface/VeryForwardRealGeometryRecord.h"
#include "Geometry/VeryForwardGeometryBuilder/interface/CTPPSGeometry.h"

class CTPPSDiamondRecHitProducer : public edm::stream::EDProducer<>
{
  public:
    explicit CTPPSDiamondRecHitProducer( const edm::ParameterSet& );
    ~CTPPSDiamondRecHitProducer() override;

    static void fillDescriptions( edm::ConfigurationDescriptions& );

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

    edm::EDGetTokenT< edm::DetSetVector<CTPPSDiamondDigi> > digiToken_;

    //edm::ESWatcher<VeryForwardRealGeometryRecord> geometryWatcher_;

    CTPPSDiamondRecHitProducerAlgorithm algo_;
};

CTPPSDiamondRecHitProducer::CTPPSDiamondRecHitProducer( const edm::ParameterSet& iConfig ) :
  digiToken_( consumes< edm::DetSetVector<CTPPSDiamondDigi> >( iConfig.getParameter<edm::InputTag>( "digiTag" ) ) ),
  algo_( iConfig )
{
  produces< edm::DetSetVector<CTPPSDiamondRecHit> >();
}

CTPPSDiamondRecHitProducer::~CTPPSDiamondRecHitProducer()
{}

void
CTPPSDiamondRecHitProducer::produce( edm::Event& iEvent, const edm::EventSetup& iSetup )
{
  std::unique_ptr< edm::DetSetVector<CTPPSDiamondRecHit> > pOut( new edm::DetSetVector<CTPPSDiamondRecHit> );

  // get the digi collection
  edm::Handle< edm::DetSetVector<CTPPSDiamondDigi> > digis;
  iEvent.getByToken( digiToken_, digis );

  // get the geometry
  edm::ESHandle<CTPPSGeometry> geometry;
  iSetup.get<VeryForwardRealGeometryRecord>().get( geometry );

  // produce the rechits collection
  algo_.build( geometry.product(), *( digis ), *( pOut ) );

  iEvent.put( std::move( pOut ) );
}

void
CTPPSDiamondRecHitProducer::fillDescriptions( edm::ConfigurationDescriptions& descr )
{
  edm::ParameterSetDescription desc;

  desc.add<edm::InputTag>( "digiTag", edm::InputTag( "ctppsDiamondRawToDigi", "TimingDiamond" ) )
    ->setComment( "input digis collection to retrieve" );
  desc.add<double>( "timeSliceNs", 25.0/1024.0 )
    ->setComment( "conversion constant between HPTDC timing bin size and nanoseconds" );
  desc.add<int>( "timeShift", 0 ) // to be determined at calibration level, will be replaced by a map channel id -> time shift
    ->setComment( "overall time offset to apply on all hits in all channels" );

  descr.add( "ctppsDiamondRecHits", desc );
}

DEFINE_FWK_MODULE( CTPPSDiamondRecHitProducer );