EventDuplicateFinderAlg.cxx

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
 
 
// EDM include(s):
#include "xAODEventInfo/EventInfo.h"
 
// Local include(s):
#include "EventDuplicateFinderAlg.h"
 
namespace xAODReader {
 
   EventDuplicateFinderAlg::EventDuplicateFinderAlg( const std::string& name,
                                                     ISvcLocator* svcLoc )
      : AthAlgorithm( name, svcLoc ),
        m_seenEvents() {
 
      declareProperty( "EventInfoKey", m_key = "EventInfo",
                       "StoreGate key of the xAOD::EventInfo object to be "
                       "used" );
   }
 
   StatusCode EventDuplicateFinderAlg::initialize() {
 
      ATH_MSG_DEBUG( "EventInfoKey = " << m_key );
 
      // Reset the internal variable:
      m_seenEvents.clear();
 
      // Return gracefully:
      return StatusCode::SUCCESS;
   }
 
   StatusCode EventDuplicateFinderAlg::execute(const EventContext& /*ctx*/) {
 
      // Retrieve the EI object:
      const xAOD::EventInfo* ei = nullptr;
      ATH_CHECK( evtStore()->retrieve( ei, m_key ) );
 
      // Check if we saw this event already or not:
      if( ! m_seenEvents.insert(
                         std::make_pair( ei->runNumber(),
                                         ei->eventNumber() ) ).second ) {
         ATH_MSG_FATAL( "Seeing run #" << ei->runNumber() << ", event #"
                        << ei->eventNumber() << " for the second time" );
         return StatusCode::FAILURE;
      }
 
      // No, we just saw it now for the first time:
      ATH_MSG_VERBOSE( "Saw run #" << ei->runNumber() << ", event #"
                       << ei->eventNumber() << " for the first time" );
 
      // Return gracefully:
      return StatusCode::SUCCESS;
   }
 
} // namespace xAODReader