AlignAlg.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#include "TrkTrack/TrackCollection.h"
 
#include "TrkAlignGenAlgs/AlignAlg.h"
 
#include "TrkAlignEvent/AlignTrack.h"
#include "TrkAlignEvent/AlignVertex.h"
 
#include "TFile.h"
 
namespace Trk {
 
//___________________________________________________________________________
AlignAlg::~AlignAlg() 
{
 
  if (m_ntuple && m_solveOnly) {  
    ATH_MSG_DEBUG("closing file");
    m_ntuple->Close(); 
    ATH_MSG_DEBUG("file closed");
  }
}
 
//___________________________________________________________________________
StatusCode AlignAlg::initialize() 
{
  ATH_MSG_INFO("AlignAlg::initialize()");
 
  // Get GeometryManagerTool
  if ( m_geometryManagerTool.retrieve().isFailure() ) {
    msg(MSG::FATAL)<<"Failed to retrieve tool " << m_geometryManagerTool
       << endmsg;
    return StatusCode::FAILURE;
  }
  else
    ATH_MSG_INFO("Retrieved tool " << m_geometryManagerTool);
 
  // some tools are not needed if only solving is done
  if ( !m_solveOnly ) {
 
    // get TrackCollectionProvider
    if (m_trackCollectionProvider.retrieve().isSuccess())
      ATH_MSG_INFO("Retrieved " << m_trackCollectionProvider);
    else{
      msg(MSG::FATAL) << "Could not get " << m_trackCollectionProvider << endmsg; 
      return StatusCode::FAILURE;
    }
 
    // get AlignTrackPreProcessor
    if (m_alignTrackPreProcessor.retrieve().isSuccess())
      ATH_MSG_INFO("Retrieved " << m_alignTrackPreProcessor);
    else{
      msg(MSG::FATAL) << "Could not get " << m_alignTrackPreProcessor << endmsg; 
      return StatusCode::FAILURE;
    }
 
    // Get AlignTrackCreator tool
    if ( m_alignTrackCreator.retrieve().isFailure() ) {
      msg(MSG::FATAL)<<"Failed to retrieve tool "<<m_alignTrackCreator<<endmsg;
      return StatusCode::FAILURE;
    } 
    else
      ATH_MSG_INFO("Retrieved tool "<<m_alignTrackCreator);
 
    // Get AlignTrackDresser tool
    if ( m_alignTrackDresser.retrieve().isFailure() ) {
      msg(MSG::FATAL)<<"Failed to retrieve tool "<<m_alignTrackDresser<<endmsg;
      return StatusCode::FAILURE;
    } 
    else
      ATH_MSG_INFO("Retrieved tool "<<m_alignTrackDresser);
 
    // Get TrkAlign::FillTrack
    if (m_writeNtuple) {
      if ( m_fillNtupleTool.retrieve().isFailure() ) {
        msg(MSG::FATAL)<<"Failed to retrieve tool "<<m_fillNtupleTool<<endmsg;
        return StatusCode::FAILURE;
      }
      else
        ATH_MSG_INFO("Retrieved tool "<<m_fillNtupleTool);
    }
  }
  
  // Get AlignTool tool
  if ( m_alignTool.retrieve().isFailure() ) {
    msg(MSG::FATAL)<<"Failed to retrieve tool "<<m_alignTool<<endmsg;
    return StatusCode::FAILURE;
  } 
  else
    ATH_MSG_INFO("Retrieved tool "<<m_alignTool);
 
  // Get TrkAlignDataBaseTool  
  if ( m_trkAlignDBTool.retrieve().isFailure() ) {
    msg(MSG::FATAL)<<"Failed to retrieve tool "<<m_trkAlignDBTool<<endmsg;
    return StatusCode::FAILURE;
  } 
  else
    ATH_MSG_INFO("Retrieved tool "<<m_trkAlignDBTool);
 
  // Alignment Level
  // Number of layers in the superstructures
  if (m_alignSolveLevel>3 || m_alignSolveLevel<1) {
    msg(MSG::FATAL)<<"AlignSolveLevel could be 1, 2 or 3"<<endmsg;
    return StatusCode::FAILURE;
  }
 
  // open logfile
  if(m_writeLogfile) {
    std::ostream  * out   = &std::cout;
    std::ofstream * ofile = new std::ofstream(m_logfileName.value().c_str());
    if(!ofile->is_open()) {
      msg(MSG::ERROR)<<"Couldn't open logfile. Writing to standard output."<<endmsg;
      delete ofile;
    }
    else
      out = ofile;
 
    m_logStream = out;
 
    // set logStream in the tools
    m_geometryManagerTool->setLogStream(m_logStream);
    m_alignTool->setLogStream(m_logStream);
    m_trkAlignDBTool->setLogStream(m_logStream);
    if( !m_solveOnly ) {
         m_trackCollectionProvider->setLogStream(m_logStream);
         m_alignTrackPreProcessor->setLogStream(m_logStream);
         m_alignTrackCreator->setLogStream(m_logStream);
         m_alignTrackDresser->setLogStream(m_logStream);
         if (m_writeNtuple)
             m_fillNtupleTool->setLogStream(m_logStream);
    }
  }
 
  return StatusCode::SUCCESS;
}
 
//___________________________________________________________________________
StatusCode AlignAlg::start()
{
  ATH_MSG_DEBUG("AlignAlg::start()");
 
  if (m_writeNtuple) {
      m_ntuple = new TFile((m_filepath.value()+m_filename.value()).c_str(),"RECREATE");
      // set the ntuple points of the tools
      m_geometryManagerTool->setNtuple(m_ntuple);
      m_trackCollectionProvider->setNtuple(m_ntuple);
      m_alignTrackPreProcessor->setNtuple(m_ntuple);
      m_alignTool->setNtuple(m_ntuple);
      m_trkAlignDBTool->setNtuple(m_ntuple);
      m_fillNtupleTool->setNtuple(m_ntuple);
  }
 
  ATH_MSG_DEBUG("reading geometry");
  int NDoF = m_geometryManagerTool->ReadGeometry(m_alignSolveLevel);
  ATH_MSG_DEBUG("read geometry, "<<NDoF<<" alignment parameters");
 
  m_geometryManagerTool->PrintModPositions();
 
  // fix pathname (used to be m_pathbin+m+prefixName)
  // m_geometryManagerTool->StoreModPositions(pathname);
 
  StatusCode sc = m_alignTool->firstEventInitialize();
 
  if (sc != StatusCode::SUCCESS) {
    msg(MSG::FATAL)<<"problem with alignTool->firstEventInitialize()"<<endmsg;
    return StatusCode::FAILURE;
  }
 
  if(m_solveOnly) {
    ATH_MSG_DEBUG("getting data from files");
    m_alignTool->accumulateFromFiles();
  }
 
  return StatusCode::SUCCESS;
}
 
//___________________________________________________________________________
StatusCode AlignAlg::execute() 
{
  ATH_MSG_DEBUG("AlignAlg::execute()");
 
  const EventContext& ctx = Gaudi::Hive::currentContext();
 
  // increment number of events
  m_nevents++;
 
  if(m_solveOnly) {    
    if (m_nevents<=1)
      return StatusCode::SUCCESS;    
    else { 
      // return FAILURE to make sure that the job ends after 1st event
      msg(MSG::INFO)<<"Only doing the solving. Aborting event processing after first event."<<endmsg;
      msg(MSG::INFO)<<"Following ERROR message is not a problem..."<<endmsg;
      return StatusCode::FAILURE;
    }
  }
 

  //  1.  apply event selection, select hits, refit tracks
  // m_trackSelector->cleanTracks();
 
  // loop over tracks
  TrackCollection * alignTracks;
  const TrackCollection* originalTracks;
  
  StatusCode sc = m_trackCollectionProvider->trackCollection(originalTracks);
  if (!originalTracks || sc.isFailure()) return sc;
 
  if(originalTracks->empty()) {
    ATH_MSG_DEBUG("found no tracks");
    return StatusCode::SUCCESS;
  }
 
  // increment number of processed tracks
  m_ntracks += originalTracks->size();
  ATH_MSG_DEBUG("nTracks: "<<m_ntracks);
 
  // process track collection and create collection of AlignTracks
  alignTracks = m_alignTrackPreProcessor->processTrackCollection(originalTracks);
 
  // method returns zero or empty collection
  if (!alignTracks || alignTracks->empty()) {
    ATH_MSG_DEBUG("processTrackCollection() returned empty Track collection.");
    return StatusCode::SUCCESS;
  }
 
  // increment number of selected tracks
  m_ntracksSel += alignTracks->size();
 
  // loop over AlignTracks and pass to AlignTrackCreator and Dresser for more processing
  int itrk = 0;
  for (Track* trk : *alignTracks) {                               //  first loop over AlignTracks
 
    ATH_MSG_DEBUG("1st loop: Processing track "<<itrk);
 
    // each track in the collection HAS to be an AlignTrack
    AlignTrack * alignTrack = dynamic_cast<AlignTrack*>(trk);
    if(!alignTrack) {
      msg(MSG::FATAL)<<"Track is not an AlignTrack. PreProcessor returns TrackCollection but"
                     <<"it has to be filled with AlignTracks. Otherwise the code doesn't work."<<endmsg;
      return StatusCode::FAILURE;
    }
 
    // process AlignTrack
    bool success = m_alignTrackCreator->processAlignTrack(alignTrack);
    if (!success) {
      ATH_MSG_DEBUG("processAlignTrack() returned FALSE, Skipping the track.");
      continue;
    }
 
    m_ntracksProc++;
 
    // dress AlignTrack with extra info
    success = m_alignTrackDresser->dressAlignTrack(alignTrack);
    ATH_MSG_DEBUG("back from dressing AlignTrack");
    
    if (!success) {
      ATH_MSG_DEBUG("dressAlignTrack() returned FALSE, Skipping the track.");
      continue;
    }
    
    m_ntracksDress++;
 
    // accumulate vertex fit information:
    m_alignTrackPreProcessor->accumulateVTX(alignTrack);   
 
    ATH_MSG_DEBUG("back from accumulateVTX");
    
  }                                                                   // end of the first loop over AlignTracks
 
 
  // solve existing vertices:
  m_alignTrackPreProcessor->solveVTX();   
 
                                    
  for (Track* trk : *alignTracks) {                               //  second loop over AlignTracks
 
    ATH_MSG_DEBUG("2nd loop: Processing tracks");
 
    // each track in the collection HAS to be an AlignTrack
    AlignTrack * alignTrack = dynamic_cast<AlignTrack*>(trk);
    if(!alignTrack) {
      msg(MSG::FATAL)<<"Track is not an AlignTrack. PreProcessor returns TrackCollection but"
                     <<"it has to be filled with AlignTracks. Otherwise the code doesn't work."<<endmsg;
      return StatusCode::FAILURE;
    }
 
 
    // check if the dressing was successful:
    const Amg::SymMatrixX    * ptrWeights   = alignTrack->weightMatrix(); //Symmetric Matrix
    if ( !ptrWeights ) {
      ATH_MSG_DEBUG("dressAlignTrack failed, Skipping the track.");
      continue;
    }
 
    // check if the eventual VTX solving was successful:
    const AlignVertex        * ptrVertex    = alignTrack->getVtx();
    if ( ptrVertex && (ptrVertex->type() < AlignVertex::Refitted) ) {
      ATH_MSG_DEBUG("Vertex fit failed for this track. Skipping the track.");
      continue;
    }
 
 
    // pass to AlignTool for processing of track information
    bool success = m_alignTool->accumulate(alignTrack);
    ATH_MSG_DEBUG("back from accumulate");
    
    if (!success) {
      ATH_MSG_DEBUG("accumulate() returned FALSE, Skipping the track.");
      continue;
    }
    
    ATH_MSG_DEBUG("calling fillntuple::dumptrack");
 
    m_ntracksAccum++;
    
    if (m_writeNtuple)
      m_fillNtupleTool->dumpTrack(ctx, itrk,alignTrack);
    ATH_MSG_DEBUG("done with track "<<itrk);
 
  }                                                                   // end of the second loop over AlignTracks
 
 
 
 
  // record the collection in the StoreGate
  // the ownership is transferred to StoreGate so we don't delete the collection here
  if(evtStore()->record(alignTracks,m_alignTracksName,false).isFailure()) {
    ATH_MSG_ERROR("Unable to record "<<m_alignTracksName<<" in the StoreGate");
    delete alignTracks;
    alignTracks = nullptr;
  }
  if (alignTracks) ATH_MSG_DEBUG("Recorded \'"<<m_alignTracksName<<"\' with size "<<alignTracks->size()<<" to StoreGate");
 
  ATH_MSG_DEBUG("returning SUCCESS");
  return StatusCode::SUCCESS;
}
 
//___________________________________________________________________________
StatusCode AlignAlg::stop()
{
  ATH_MSG_INFO("AlignAlg::stop()");
 
  if(m_logStream && !m_solveOnly) {
    *m_logStream<<"*************************************************************"<<std::endl;
    *m_logStream<<"******              Alignment Job summary              ******"<<std::endl;
    *m_logStream<<"*************************************************************"<<std::endl;
    *m_logStream<<"*"<<std::endl;
    *m_logStream<<"* number of processed events:     "<<m_nevents<<std::endl;
    *m_logStream<<"* number of processed tracks:     "<<m_ntracks<<std::endl;
    *m_logStream<<"* number of selected tracks:      "<<m_ntracksSel<<std::endl;
    *m_logStream<<"* number of tracks processed:     "<<m_ntracksProc<<std::endl;
    *m_logStream<<"* number of tracks dressed:       "<<m_ntracksDress<<std::endl;
    *m_logStream<<"* number of tracks accumulated:   "<<m_ntracksAccum<<std::endl;
 
    *m_logStream<<"*"<<std::endl;
 
     m_alignTrackPreProcessor->printSummary();
     m_trackCollectionProvider->printSummary();
  }
 
  // fill ntuple for all tools
  if (m_writeNtuple) {
    ATH_MSG_INFO("calling alignTool->fillNtuple()");
    if(m_alignTool->fillNtuple().isFailure()) {
      msg(MSG::ERROR)<<"problem with alignTool fillNtuple()!"<<endmsg;
      return StatusCode::FAILURE;
    }
    ATH_MSG_INFO("calling fillNtupleTool->fillNtuple()");
    if(m_fillNtupleTool->fillNtuple().isFailure()) {
      msg(MSG::ERROR)<<"problem with fillNtupleTool fillNtuple()!"<<endmsg;
      return StatusCode::FAILURE;
    }
 
    ATH_MSG_INFO("calling alignTrackPreProcessor->fillNtuple()");
    if(m_alignTrackPreProcessor->fillNtuple().isFailure()) {
       msg(MSG::ERROR)<<"problem with alignTrackPreProcessor fillNtuple()!"<<endmsg;
       return StatusCode::FAILURE;
    }
 
    ATH_MSG_INFO("calling trackCollectionProvider->fillNtuple()");
    if(m_trackCollectionProvider->fillNtuple().isFailure()) {
       msg(MSG::ERROR)<<"problem with trackCollectionProvider fillNtuple()!"<<endmsg;
       return StatusCode::FAILURE;
    }
  }
  
  if(!m_solveOnly && m_ntracksSel==0) {
    msg(MSG::WARNING)<<"No tracks passed track selection. No solving."<<endmsg;
    return StatusCode::SUCCESS;
  }
 
  ATH_MSG_INFO("calling trkAlignDBTool->preSolve()");
  if (m_trkAlignDBTool->preSolve().isFailure()) {
    msg(MSG::FATAL)<<"failure in ITrkAlignDBTool->preSolve()"<<endmsg;
    return StatusCode::FAILURE;
  }
 
  ATH_MSG_INFO("calling alignTool->solve()");
  if (m_alignTool->solve().isFailure()) {
    msg(MSG::FATAL)<<"failure in IAlignTool->solve()"<<endmsg;
    return StatusCode::FAILURE;
  }
 
  ATH_MSG_INFO("calling trkAlignDBTool->writeAlignPar()");
  m_trkAlignDBTool->writeAlignPar();
 
  return StatusCode::SUCCESS;
}
 
//___________________________________________________________________________
StatusCode AlignAlg::finalize() 
{
  ATH_MSG_INFO("AlignAlg::finalize()");
 
  // close the logfile
  if(m_writeLogfile) {
    if(std::ofstream * ofs = dynamic_cast<std::ofstream *>(m_logStream)) {
      if(ofs->is_open()) {
        *ofs<<std::flush;
        ofs->close();
      }
      delete m_logStream;
    }
  }
  
  if (m_writeNtuple) {
    ATH_MSG_INFO("closing "<<m_ntuple->GetName());
    m_ntuple->Close();
  }
 
  return StatusCode::SUCCESS;
}
 
  
}