/data/refman/pasoursint/CMSSW_5_3_1/src/DPGAnalysis/SiStripTools/plugins/APVCyclePhaseProducerFromL1ABC.cc

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// -*- C++ -*-
//
// Package:    SiStripTools
// Class:      APVCyclePhaseProducerFromL1ABC
// 
//
// Original Author:  Andrea Venturi
//         Created:  Mon Jan 12 09:05:45 CET 2009
//
//


// system include files
#include <memory>

// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EDProducer.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/Run.h"
#include "FWCore/Framework/interface/MakerMacros.h"

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

#include "FWCore/ServiceRegistry/interface/Service.h"
#include "CommonTools/UtilAlgos/interface/TFileService.h"

#include "FWCore/Utilities/interface/InputTag.h"

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

#include <map>
#include <vector>
#include <string>

#include "TH1F.h"
#include "TProfile.h"

#include "DataFormats/Scalers/interface/L1AcceptBunchCrossing.h"
#include "DPGAnalysis/SiStripTools/interface/APVCyclePhaseCollection.h"

//
// class decleration
//

class APVCyclePhaseProducerFromL1ABC : public edm::EDProducer {
   public:
      explicit APVCyclePhaseProducerFromL1ABC(const edm::ParameterSet&);
      ~APVCyclePhaseProducerFromL1ABC();

private:
  virtual void beginJob() ;
  virtual void beginRun(edm::Run&, const edm::EventSetup&);
  virtual void endRun(edm::Run&, const edm::EventSetup&);
  virtual void produce(edm::Event&, const edm::EventSetup&);
  virtual void endJob() ;
  
      // ----------member data ---------------------------

  const edm::InputTag _l1abccollection;
  const std::vector<std::string> _defpartnames;
  const std::vector<int> _defphases;
  const int _orbitoffsetSOR; 
  const bool _wantHistos;
  TH1F* _hbx;
  TH1F* _hdbx;
  TH1F* _hdorbit;
  const unsigned int _firstgoodrun;
  std::map<unsigned int, long long> _offsets;
  long long _curroffset;
  unsigned int _curroffevent;

};

//
// constants, enums and typedefs
//


//
// static data member definitions
//

//
// constructors and destructor
//
APVCyclePhaseProducerFromL1ABC::APVCyclePhaseProducerFromL1ABC(const edm::ParameterSet& iConfig):
  _l1abccollection(iConfig.getParameter<edm::InputTag>("l1ABCCollection")),
  _defpartnames(iConfig.getParameter<std::vector<std::string> >("defaultPartitionNames")),
  _defphases(iConfig.getParameter<std::vector<int> >("defaultPhases")),
  _orbitoffsetSOR(iConfig.getParameter<int>("StartOfRunOrbitOffset")),
  _wantHistos(iConfig.getUntrackedParameter<bool>("wantHistos",false)),
  _hbx(0),_hdbx(0),_hdorbit(0),_firstgoodrun(110878),
  _offsets(), _curroffset(0), _curroffevent(0)
{

  produces<APVCyclePhaseCollection,edm::InEvent>();

   //now do what ever other initialization is needed

}


APVCyclePhaseProducerFromL1ABC::~APVCyclePhaseProducerFromL1ABC()
{
 
   // do anything here that needs to be done at desctruction time
   // (e.g. close files, deallocate resources etc.)

}


//
// member functions
//

// ------------ method called to produce the data  ------------
void
APVCyclePhaseProducerFromL1ABC::beginRun(edm::Run& iRun, const edm::EventSetup& iSetup) 

{

  // reset offset vector

  _offsets.clear();
  edm::LogInfo("AbsoluteBXOffsetReset") << "Absolute BX offset map reset";


  if(_wantHistos) {

    edm::Service<TFileService> tfserv;

    char dirname[300];
    sprintf(dirname,"run_%d",iRun.run());
    TFileDirectory subrun = tfserv->mkdir(dirname);

    _hbx = subrun.make<TH1F>("l1abcbx","BX number from L1ABC",4096,-0.5,4095.5);
    _hbx->GetXaxis()->SetTitle("BX");     _hbx->GetYaxis()->SetTitle("Events"); 

    _hdbx = subrun.make<TH1F>("dbx","BX number difference",4096*2-1,-4095.5,4095.5);
    _hdbx->GetXaxis()->SetTitle("#DeltaBX");     _hdbx->GetYaxis()->SetTitle("Events"); 
    
    _hdorbit = subrun.make<TH1F>("dorbit","Orbit Number difference",9999,-4999.5,4999.5);
    _hdorbit->GetXaxis()->SetTitle("#Deltaorbit");     _hdorbit->GetYaxis()->SetTitle("Events"); 
    
  }

  if(iRun.run() < _firstgoodrun) {
    edm::LogInfo("UnreliableMissingL1AcceptBunchCrossingCollection") << 
      "In this run L1AcceptBunchCrossingCollection is missing or unreliable: default phases will be used"; 
  }

}

void 
APVCyclePhaseProducerFromL1ABC::endRun(edm::Run&, const edm::EventSetup&)
{
  // summary of absolute bx offset vector

  edm::LogInfo("L1AcceptBunchCrossingAbsoluteBXOffsetSummary") << "Absolute BX offset summary:";
  for(std::map<unsigned int, long long>::const_iterator offset=_offsets.begin();offset!=_offsets.end();++offset) {
    edm::LogVerbatim("L1AcceptBunchCrossingAbsoluteBXOffsetSummary") << offset->first << " " << offset->second;
  }

}


void
APVCyclePhaseProducerFromL1ABC::produce(edm::Event& iEvent, const edm::EventSetup& iSetup) {

  using namespace edm;
  
  std::auto_ptr<APVCyclePhaseCollection> apvphases(new APVCyclePhaseCollection() );
  

  const std::vector<int>& phases = _defphases;
  const std::vector<std::string>& partnames = _defpartnames;

  // Look for the L1AcceptBunchCrossingCollection

  int phasechange = 0;

  if(iEvent.run() >= _firstgoodrun ) {
    
    Handle<L1AcceptBunchCrossingCollection > pIn;
    iEvent.getByLabel(_l1abccollection,pIn);
    
    // offset computation
    
    long long orbitoffset = _orbitoffsetSOR;
    int bxoffset = 0;
    
    for(L1AcceptBunchCrossingCollection::const_iterator l1abc=pIn->begin();l1abc!=pIn->end();++l1abc) {
      if(l1abc->l1AcceptOffset()==0) {
        if(l1abc->eventType()!=0) {
          orbitoffset = (long long)iEvent.orbitNumber() - (long long)l1abc->orbitNumber() ;
          bxoffset = iEvent.bunchCrossing() - l1abc->bunchCrossing();
          
          if(_wantHistos) {
            _hbx->Fill(l1abc->bunchCrossing());
            _hdbx->Fill(bxoffset);
            _hdorbit->Fill(orbitoffset);
          }
        }
        else {
          edm::LogWarning("L1AcceptBunchCrossingNoType") << "L1AcceptBunchCrossing with no type found: ";
          for(L1AcceptBunchCrossingCollection::const_iterator debu=pIn->begin();debu!=pIn->end();++debu) {
            edm::LogPrint("L1AcceptBunchCrossingNoType") << *debu;
          }
        }
      }
    }

    long long absbxoffset = orbitoffset*3564 + bxoffset;

    if(orbitoffset != _orbitoffsetSOR) phasechange = (orbitoffset*3564)%70;

     if(_offsets.size()==0) {
       _curroffset = absbxoffset;
       _curroffevent = iEvent.id().event();
       _offsets[iEvent.id().event()] = absbxoffset;
     }
     else {
       if(_curroffset != absbxoffset || iEvent.id().event() < _curroffevent ) {

         if( _curroffset != absbxoffset) {
           edm::LogInfo("L1AcceptBunchCrossingAbsoluteBXOffsetChanged") << "Absolute BX offset changed from " 
                                                                        << _curroffset << " to "
                                                                        << absbxoffset << " at orbit "
                                                                        << iEvent.orbitNumber() << " and BX "
                                                                        << iEvent.bunchCrossing();
           for(L1AcceptBunchCrossingCollection::const_iterator l1abc=pIn->begin();l1abc!=pIn->end();++l1abc) {
             edm::LogVerbatim("L1AcceptBunchCrossingAbsoluteBXOffsetChanged") << *l1abc;
           }
         }

         _curroffset = absbxoffset;
         _curroffevent = iEvent.id().event();
         _offsets[iEvent.id().event()] = absbxoffset;
       }
     }

    
  }
  


  if(phases.size() < partnames.size() ) {
    // throw exception
    throw cms::Exception("InvalidAPVCyclePhases") << " Inconsistent phases/partitions vector sizes: " 
                                             << phases.size() << " " 
                                             << partnames.size();
  }

  for(unsigned int ipart=0;ipart<partnames.size();++ipart) {
    if(phases[ipart]>=0) {
      apvphases->get()[partnames[ipart]] = (phases[ipart]+phasechange)%70;

    }
  }


  iEvent.put(apvphases);

}

// ------------ method called once each job just before starting event loop  ------------
void 
APVCyclePhaseProducerFromL1ABC::beginJob()
{
}

// ------------ method called once each job just after ending the event loop  ------------
void 
APVCyclePhaseProducerFromL1ABC::endJob() {
}

//define this as a plug-in
DEFINE_FWK_MODULE(APVCyclePhaseProducerFromL1ABC);