TestRecoAlg.cxx

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#include <fstream>
#include <xAODTrigger/TrigCompositeAuxContainer.h>
#include <TrigSteeringEvent/TrigRoiDescriptorCollection.h>
#include <TrigCompositeUtils/TrigCompositeUtils.h>
#include "TestRecoAlg.h"
 
 
 
namespace HLTTest {
 
  TestRecoAlg::TestRecoAlg( const std::string& name, 
                ISvcLocator* pSvcLocator ) : 
    ::AthAlgorithm( name, pSvcLocator )
  {}
  
 
  TestRecoAlg::~TestRecoAlg() {}
 
  void split(const std::string& src, char delim, std::vector<std::string>& result) {
    std::istringstream i(src);
    std::string element;
    while ( getline(i, element, delim) ) {
      result.push_back(element);
    }
  }
  std::string trim(const std::string& str) {
    size_t firstNonSpace = str.find_first_not_of(' ');
    size_t lastNonSpace = str.find_last_not_of(' ');
    return str.substr( firstNonSpace, lastNonSpace-firstNonSpace+1 );
  }
  
  StatusCode TestRecoAlg::initialize() {    
    ATH_MSG_INFO ("Initializing " << name() << " reading input file " << m_fileName);
 
 
    CHECK( m_output.initialize() );
    CHECK( m_input.initialize( not m_input.key().empty() ) );
    std::ifstream inputFile( m_fileName );
    std::string line;
    typedef std::vector<std::string> Split_t;
  
    while (  getline(inputFile, line) ) {
      if ( line[0] == '#' ) continue;
      Split_t  objects;
      Event_t event;
      split( line, ';', objects );
      for ( const auto& obj: objects ) {
    Obj_t object;
    Split_t properties;
    split( obj, ',', properties );
    for ( const auto& prop: properties ) {
      Split_t keyval;
      split( prop, ':', keyval );
      if ( keyval.size() != 2  ) {
        ATH_MSG_ERROR("Pnput format error, property specification invalid, should be a:b " << prop );
        return StatusCode::FAILURE;   
      }
      object.push_back( std::make_pair( trim ( keyval[0] ), std::stof(keyval[1]) ) );   
    }
    if ( object.size() != 0 ) 
      event.push_back(std::move(object));
      }
      m_data.push_back(std::move(event));
    }
    ATH_MSG_DEBUG( "Loaded " << m_data.size() << " pseudo events" );
    if ( m_data.size() == 0 ) {
      ATH_MSG_ERROR( "Can not run with zero pseudo events" );
      return StatusCode::FAILURE;
    }
    return StatusCode::SUCCESS;
  }
 
  StatusCode TestRecoAlg::finalize() {
    ATH_MSG_INFO ("Finalizing " << name() << "...");
    return StatusCode::SUCCESS;
  }
 
  StatusCode TestRecoAlg::execute() {  
    using namespace TrigCompositeUtils;
    ATH_MSG_DEBUG ("Executing " << name() << "...");
 
    const EventContext& context = Gaudi::Hive::currentContext();
    const size_t eventNo = context.evt() % m_data.size();
    auto objects= m_data[eventNo];
 
    auto output = std::make_unique<xAOD::TrigCompositeContainer>();
    auto aux = std::make_unique<xAOD::TrigCompositeAuxContainer>();
    output->setStore( aux.get() );
 
    
    auto inputHandle = SG::makeHandle(m_input);
    ATH_MSG_DEBUG("Input " << m_input.key() << " has "<<inputHandle->size() <<" elements, scanning it");
    for ( auto i: *inputHandle.cptr() ) {     
      auto featureInfo = TrigCompositeUtils::findLink<TrigRoiDescriptorCollection>( i, "initialRoI"  );
      auto roiLink = featureInfo.link;
      CHECK( roiLink.isValid() );
      if ( roiLink.isValid() ) {
        auto roiPtr(roiLink.cptr());
        ATH_MSG_DEBUG("RoI" << **roiPtr );
        bool foundObject = false;
        // create new outpu objects and add the properties
        if (objects.size() > output->size()) {         
          // attaching the correct object form input data:
          for (const auto & object: objects){                       
            auto eta = object[0].second;
            auto phi = object[1].second;
            // check eta and phi
            if (std::abs( eta - (*roiPtr)->eta()) <0.01 && std::abs(phi - (*roiPtr)->phi())< 0.01){
              foundObject = true;
              ATH_MSG_DEBUG( "Found object: " << object[0].first << " : " << object[0].second <<" ,   " << object[1].first << " : " << object[1].second );
              auto xobj = new xAOD::TrigComposite;
                output->push_back( xobj );
                // maintain link to previous collections
              xobj->setObjectLink( "initialRoI", roiLink );// this is used by the HypoAlg
              for ( const auto& prop : object )  {
                 xobj->setDetail( prop.first, prop.second );
                 ATH_MSG_DEBUG( "  " << prop.first << " : " << prop.second );
              }
              }
          }
          if (!foundObject) {
            ATH_MSG_ERROR("No reco object found in eta and phi range: this might be an error");
          }
          }
        else {
          ATH_MSG_DEBUG( "No reco object created for this RoI because it's not found in the event");
        }
      } else {
        ATH_MSG_DEBUG("RoI information missing");
      }
    }
  
 
    ATH_MSG_DEBUG("Reconstructed "<<output->size() <<" objects");
  
    auto handle = SG::makeHandle(m_output);
    CHECK( handle.record( std::move(output), std::move(aux) ) );
 
    return StatusCode::SUCCESS;
  }
 
} //> end namespace HLTTest