/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/DQM/TrackerMonitorTrack/src/MonitorTrackResiduals.cc

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#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "CalibTracker/Records/interface/SiStripDetCablingRcd.h"
#include "CalibFormats/SiStripObjects/interface/SiStripDetCabling.h"
#include "DataFormats/SiStripDetId/interface/SiStripSubStructure.h"
#include "DQM/SiStripCommon/interface/SiStripFolderOrganizer.h"
#include "DQM/SiStripCommon/interface/SiStripHistoId.h"
#include "DQM/TrackerMonitorTrack/interface/MonitorTrackResiduals.h"
#include "Geometry/CommonTopologies/interface/StripTopology.h"
#include "RecoTracker/TransientTrackingRecHit/interface/TkTransientTrackingRecHitBuilder.h"
#include "TrackingTools/TrackFitters/interface/TrajectoryFitter.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include "DataFormats/GeometryCommonDetAlgo/interface/MeasurementVector.h"
#include "DataFormats/SiStripDetId/interface/StripSubdetector.h"
#include "DataFormats/SiStripDetId/interface/SiStripDetId.h"
#include "TrackingTools/TrackFitters/interface/TrajectoryStateCombiner.h"
#include "Alignment/OfflineValidation/interface/TrackerValidationVariables.h"
#include "Alignment/TrackerAlignment/interface/TrackerAlignableId.h"
#include "DQMServices/Core/interface/DQMStore.h"
#include "DQMServices/Core/interface/MonitorElement.h"
#include "CommonTools/TriggerUtils/interface/GenericTriggerEventFlag.h"

MonitorTrackResiduals::MonitorTrackResiduals(const edm::ParameterSet& iConfig) 
   : dqmStore_( edm::Service<DQMStore>().operator->() )
   , conf_(iConfig), m_cacheID_(0) 
   , genTriggerEventFlag_(new GenericTriggerEventFlag(iConfig)) {
}

MonitorTrackResiduals::~MonitorTrackResiduals() {
  if (genTriggerEventFlag_) delete genTriggerEventFlag_; 
}


void MonitorTrackResiduals::beginJob(void) {
  ModOn = conf_.getParameter<bool>("Mod_On");
  reset_me_after_each_run = conf_.getParameter<bool>("ResetAfterRun");
}

void MonitorTrackResiduals::beginRun(edm::Run const& run, edm::EventSetup const& iSetup) {
  
  //Retrieve tracker topology from geometry
  edm::ESHandle<TrackerTopology> tTopoHandle;
  iSetup.get<IdealGeometryRecord>().get(tTopoHandle);
  const TrackerTopology* const tTopo = tTopoHandle.product();
  
  unsigned long long cacheID = iSetup.get<SiStripDetCablingRcd>().cacheIdentifier();
  if (m_cacheID_ != cacheID) {
    m_cacheID_ = cacheID;     
    this->createMEs(iSetup);
  }
  if(reset_me_after_each_run) {
    if(ModOn) {
      for(std::map<int32_t, MonitorElement*>::const_iterator it = HitResidual.begin(), 
            itEnd = HitResidual.end(); it!= itEnd;++it) {
        this->resetModuleMEs(it->first);
        this->resetLayerMEs(folder_organizer.GetSubDetAndLayer(it->first, tTopo));
      }
    } else {
      for(std::map< std::pair<std::string,int32_t>, MonitorElement*>::const_iterator it = m_SubdetLayerResiduals.begin(), 
            itEnd = m_SubdetLayerResiduals.end(); it!= itEnd;++it) {
        this->resetLayerMEs(it->first);
      }
    } // end if-else Module level on
  } // end reset after run

  // Initialize the GenericTriggerEventFlag
  if ( genTriggerEventFlag_->on() ) genTriggerEventFlag_->initRun( run, iSetup );
}

void MonitorTrackResiduals::createMEs(const edm::EventSetup& iSetup){

  //Retrieve tracker topology from geometry
  edm::ESHandle<TrackerTopology> tTopoHandle;
  iSetup.get<IdealGeometryRecord>().get(tTopoHandle);
  const TrackerTopology* const tTopo = tTopoHandle.product();

  Parameters = conf_.getParameter<edm::ParameterSet>("TH1ResModules");
  int32_t i_residuals_Nbins =  Parameters.getParameter<int32_t>("Nbinx");
  double d_residual_xmin = Parameters.getParameter<double>("xmin");
  double d_residual_xmax = Parameters.getParameter<double>("xmax");
  Parameters = conf_.getParameter<edm::ParameterSet>("TH1NormResModules");
  int32_t i_normres_Nbins =  Parameters.getParameter<int32_t>("Nbinx");
  double d_normres_xmin = Parameters.getParameter<double>("xmin");
  double d_normres_xmax = Parameters.getParameter<double>("xmax");

  
  // use SistripHistoId for producing histogram id (and title)
  SiStripHistoId hidmanager;
  folder_organizer.setSiStripFolder(); // top SiStrip folder
  
  // take from eventSetup the SiStripDetCabling object
  edm::ESHandle<SiStripDetCabling> tkmechstruct;
  iSetup.get<SiStripDetCablingRcd>().get(tkmechstruct);
  
  // get list of active detectors from SiStripDetCabling
  std::vector<uint32_t> activeDets;
  activeDets.clear(); // just in case
  tkmechstruct->addActiveDetectorsRawIds(activeDets);
  
  // use SiStripSubStructure for selecting certain regions
  SiStripSubStructure substructure;
  std::vector<uint32_t> DetIds = activeDets;
  
  // book histo per each detector module
  for (std::vector<uint32_t>::const_iterator DetItr=activeDets.begin(),  
         DetItrEnd = activeDets.end(); DetItr!=DetItrEnd; ++DetItr)
    {
      uint ModuleID = (*DetItr);
      
      // is this a StripModule?
      if( SiStripDetId(ModuleID).subDetector() != 0 ) {
        
        folder_organizer.setDetectorFolder(ModuleID, tTopo); //  detid sets appropriate detector folder         
        // Book module histogramms? 
        if (ModOn) { 
          std::string hid = hidmanager.createHistoId("HitResiduals","det",ModuleID);
          std::string normhid = hidmanager.createHistoId("NormalizedHitResiduals","det",ModuleID);      
          HitResidual[ModuleID] = dqmStore_->book1D(hid, hid, 
                                                    i_residuals_Nbins,d_residual_xmin,d_residual_xmax);
          HitResidual[ModuleID]->setAxisTitle("(x_{pred} - x_{rec})' [cm]");
          NormedHitResiduals[ModuleID] = dqmStore_->book1D(normhid, normhid, 
                                                           i_normres_Nbins,d_normres_xmin,d_normres_xmax);
          NormedHitResiduals[ModuleID]->setAxisTitle("(x_{pred} - x_{rec})'/#sigma");
        }
        // book layer level histogramms
        std::pair<std::string,int32_t> subdetandlayer = folder_organizer.GetSubDetAndLayer(ModuleID, tTopo);
        folder_organizer.setLayerFolder(ModuleID,tTopo,subdetandlayer.second);
        if(! m_SubdetLayerResiduals[subdetandlayer ] ) {
          // book histogramms on layer level, check for barrel for correct labeling
          std::string histoname = Form(subdetandlayer.first.find("B") != std::string::npos ? 
                                       "HitResiduals_%s__Layer__%d" : "HitResiduals_%s__wheel__%d" ,
                                       subdetandlayer.first.c_str(),std::abs(subdetandlayer.second));
          std::string normhistoname = 
            Form(subdetandlayer.first.find("B") != std::string::npos ? 
                 "NormalizedHitResidual_%s__Layer__%d" : "NormalizedHitResidual_%s__wheel__%d" ,
                 subdetandlayer.first.c_str(),std::abs(subdetandlayer.second));
          m_SubdetLayerResiduals[subdetandlayer] = 
            dqmStore_->book1D(histoname.c_str(),histoname.c_str(),
                              i_residuals_Nbins,d_residual_xmin,d_residual_xmax);
          m_SubdetLayerResiduals[subdetandlayer]->setAxisTitle("(x_{pred} - x_{rec})' [cm]");
          m_SubdetLayerNormedResiduals[subdetandlayer] = 
            dqmStore_->book1D(normhistoname.c_str(),normhistoname.c_str(),
                              i_normres_Nbins,d_normres_xmin,d_normres_xmax);
          m_SubdetLayerNormedResiduals[subdetandlayer]->setAxisTitle("(x_{pred} - x_{rec})'/#sigma");
        } 
      } // end 'is strip module'
    } // end loop over activeDets
}


void MonitorTrackResiduals::resetModuleMEs(int32_t modid) {
  HitResidual[modid]->Reset();
  NormedHitResiduals[modid]->Reset();
}

void MonitorTrackResiduals::resetLayerMEs(const std::pair<std::string, int32_t> &subdetandlayer) {
  m_SubdetLayerResiduals      [subdetandlayer]->Reset();
  m_SubdetLayerNormedResiduals[subdetandlayer]->Reset();
}



void MonitorTrackResiduals::endRun(const edm::Run&, const edm::EventSetup&){
}


void MonitorTrackResiduals::endJob(void){

  //dqmStore_->showDirStructure();
  bool outputMEsInRootFile = conf_.getParameter<bool>("OutputMEsInRootFile");
  std::string outputFileName = conf_.getParameter<std::string>("OutputFileName");
  if(outputMEsInRootFile){
    dqmStore_->save(outputFileName);
  }
}


void MonitorTrackResiduals::analyze(const edm::Event& iEvent, const edm::EventSetup& iSetup) {

  // Filter out events if Trigger Filtering is requested                                                                                           
  if (genTriggerEventFlag_->on()&& ! genTriggerEventFlag_->accept( iEvent, iSetup) ) return;

  //Retrieve tracker topology from geometry
  edm::ESHandle<TrackerTopology> tTopoHandle;
  iSetup.get<IdealGeometryRecord>().get(tTopoHandle);
  const TrackerTopology* const tTopo = tTopoHandle.product();

  TrackerValidationVariables avalidator_(iSetup,conf_);
  std::vector<TrackerValidationVariables::AVHitStruct> v_hitstruct;
  avalidator_.fillHitQuantities(iEvent,v_hitstruct);
  for (std::vector<TrackerValidationVariables::AVHitStruct>::const_iterator it = v_hitstruct.begin(),
       itEnd = v_hitstruct.end(); it != itEnd; ++it) {
    uint RawId = it->rawDetId;
    
    // fill if hit belongs to StripDetector and its error is not zero
    if( it->resXprimeErr != 0 && SiStripDetId(RawId).subDetector()  != 0 )  {
      if (ModOn && HitResidual[RawId]) { 
        HitResidual[RawId]->Fill(it->resXprime);
        NormedHitResiduals[RawId]->Fill(it->resXprime/it->resXprimeErr);
      }
      std::pair<std::string, int32_t> subdetandlayer = folder_organizer.GetSubDetAndLayer(RawId, tTopo);
      if(m_SubdetLayerResiduals[subdetandlayer]) {
        m_SubdetLayerResiduals[subdetandlayer]->Fill(it->resXprime);
        m_SubdetLayerNormedResiduals[subdetandlayer]->Fill(it->resXprime/it->resXprimeErr);
      }
    }
  }

}



DEFINE_FWK_MODULE(MonitorTrackResiduals);