DoubleEventSelectorAthenaPool.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/

 
#include "DoubleEventSelectorAthenaPool.h"
 
// Pool
#include "CollectionSvc/ICollectionCursor.h"
#include "CollectionSvc/CollectionRowBuffer.h"
#include "PersistentDataModel/AthenaAttributeList.h"
 
 
DoubleEventSelectorAthenaPool::DoubleEventSelectorAthenaPool(const std::string& name, ISvcLocator* pSvcLocator)
  : EventSelectorAthenaPool(name, pSvcLocator)
{
}
 
 
DoubleEventSelectorAthenaPool::~DoubleEventSelectorAthenaPool() {}
 
 
StatusCode DoubleEventSelectorAthenaPool::initialize()
{
  ATH_CHECK(EventSelectorAthenaPool::initialize());
 
  ATH_CHECK(m_secondarySelector.retrieve());
  if (dynamic_cast<EventSelectorAthenaPool *>(&*(m_secondarySelector)) == nullptr) {
    m_secondaryByteStream = true;
  }
 
  return StatusCode::SUCCESS;
}
 
 
StatusCode DoubleEventSelectorAthenaPool::next(IEvtSelector::Context& ctxt) const
{
  ATH_MSG_DEBUG("DoubleEventSelectorAthenaPool::next");
 
  std::lock_guard<CallMutex> lockGuard(m_callLock);
  if (!eventStore()->clearStore().isSuccess()) {
    ATH_MSG_WARNING("Cannot clear Store");
  }
  for (const auto& tool : m_helperTools) {
    if (!tool->preNext().isSuccess()) {
        ATH_MSG_WARNING("Failed to preNext() " << tool->name());
    }
  }
 
  for (;;) {
    // Move in the primary file (with skipping)
    if (nextWithSkip(ctxt).isFailure()) {
      return StatusCode::FAILURE;
    }
 
    // Check if we're at the end of secondary file
    if (m_secondarySelector->nextWithSkip(ctxt).isFailure()) {
      return StatusCode::FAILURE;
    }
 
    // Record the attribute list
    if (!recordAttributeList().isSuccess()) {
      ATH_MSG_ERROR("Failed to record AttributeList.");
      return StatusCode::FAILURE;
    }
 
    StatusCode status = StatusCode::SUCCESS;
    for (const auto& tool : m_helperTools) {
      StatusCode toolStatus = tool->postNext();
      if (toolStatus.isRecoverable()) {
          ATH_MSG_INFO("Request skipping event from: " << tool->name());
          if (status.isSuccess()) {
            status = StatusCode::RECOVERABLE;
          }
      } else if (toolStatus.isFailure()) {
          ATH_MSG_WARNING("Failed to postNext() " << tool->name());
          status = StatusCode::FAILURE;
      }
    }
    if (status.isRecoverable()) {
      ATH_MSG_INFO("skipping event " << m_evtCount);
    } else if (status.isFailure()) {
      ATH_MSG_WARNING("Failed to postNext() HelperTool.");
    } else {
      if (!m_counterTool.empty() && !m_counterTool->postNext().isSuccess()) {
          ATH_MSG_WARNING("Failed to postNext() CounterTool.");
      }
      break;
    }
  }
 
  return StatusCode::SUCCESS;
}
 
 
StatusCode DoubleEventSelectorAthenaPool::next(IEvtSelector::Context& ctxt, int jump) const
{
  ATH_MSG_DEBUG("DoubleEventSelectorAthenaPool::next(jump)");
 
  if (jump > 0) {
    for (int i = 0; i < jump; i++) {
      if (!next(ctxt).isSuccess()) {
        return StatusCode::FAILURE;
      }
    }
    return StatusCode::SUCCESS;
  }
 
  return StatusCode::FAILURE;
}
 
 
StatusCode DoubleEventSelectorAthenaPool::seek(Context& ctxt, int evtNum) const
{
  ATH_MSG_DEBUG("DoubleEventSelectorAthenaPool::seek");
 
  ATH_CHECK(EventSelectorAthenaPool::seek(ctxt, evtNum));
  ATH_CHECK(m_secondarySelector->seek(ctxt, evtNum));
 
  return StatusCode::SUCCESS;
}
 
 
int DoubleEventSelectorAthenaPool::size(Context& ctxt) const
{
  ATH_MSG_DEBUG("DoubleEventSelectorAthenaPool::size");
 
  int sz1 = EventSelectorAthenaPool::size(ctxt);
  int sz2 = m_secondarySelector->size(ctxt);
 
  if (sz2 < sz1) {
    ATH_MSG_WARNING("Fewer secondary input events than primary input events. Expect trouble!");
  }
 
  return sz1;
}
 
 
StatusCode DoubleEventSelectorAthenaPool::recordAttributeList() const
{
  ATH_MSG_DEBUG("DoubleEventSelectorAthenaPool::recordAttributeList");
 
  // Get access to AttributeList
  ATH_MSG_DEBUG("Get AttributeList from the collection");
  // MN: accessing only attribute list, ignoring token list
  const coral::AttributeList& attrList = m_headerIterator->currentRow().attributeList();
  ATH_MSG_DEBUG("AttributeList size " << attrList.size());
  std::unique_ptr<AthenaAttributeList> athAttrList{};
 
  // Decide what to do based on the type of secondary file
  if (m_secondaryByteStream) {
    // Create empty attribute list
    athAttrList = std::make_unique<AthenaAttributeList>();
    // Always add ByteStream as primary input
    ATH_CHECK(m_secondarySelector->fillAttributeList(athAttrList.get(), "", false));
 
    // Then fill the new attribute list from the primary file
    ATH_MSG_DEBUG("Append primary attribute list properties to the secondary one with a suffix: " << m_secondaryAttrListSuffix.value());
    ATH_CHECK(fillAttributeList(athAttrList.get(), "_" + m_secondaryAttrListSuffix.value(), true));
  } else {
    // Create a new attribute list from the primary input one
    athAttrList = std::make_unique<AthenaAttributeList>(attrList);
    // Fill the new attribute list from the primary file
    ATH_CHECK(fillAttributeList(athAttrList.get(), "", false));
 
    // Fill the new attribute list from the secondary file
    ATH_MSG_DEBUG("Append secondary attribute list properties to the primary one with a suffix: " << m_secondaryAttrListSuffix.value());
    ATH_CHECK(m_secondarySelector->fillAttributeList(athAttrList.get(), "_" + m_secondaryAttrListSuffix.value(), true));
  }
 
  // Add info about secondary input
  athAttrList->extend("hasSecondaryInput", "bool");
  (*athAttrList)["hasSecondaryInput"].data<bool>() = true;
 
  SG::WriteHandle<AthenaAttributeList> wh(m_attrListKey, eventStore()->name());
  ATH_CHECK(wh.record(std::move(athAttrList)));
 
  return StatusCode::SUCCESS;
}
 
 
void DoubleEventSelectorAthenaPool::handle(const Incident& inc)
{
  ATH_MSG_DEBUG("DoubleEventSelectorAthenaPool::handle");
 
   if (not Atlas::hasExtendedEventContext(inc.context()) ) {
    ATH_MSG_WARNING("No extended event context available.");
    return;
  }
 
   SG::SourceID fid1;
   if (inc.type() == IncidentType::BeginProcessing) {
     if ( Atlas::hasExtendedEventContext(inc.context()) ) {
       fid1 = Atlas::getExtendedEventContext(inc.context()).proxy()->sourceID();
     }
     *m_sourceID1.get(inc.context()) = fid1;
   }
   else {
     fid1 = *m_sourceID1.get(inc.context());
   }
 
  if( fid1.empty() ) {
    ATH_MSG_WARNING("could not read event source ID from incident event context with key EventSelector");
    return;
  }
 
  ATH_MSG_DEBUG("**  MN Incident handler " << inc.type() << " Event source ID=" << fid1 );
  if( inc.type() == IncidentType::BeginProcessing ) {
    // increment the events-per-file counter for FID
    m_activeEventsPerSource[fid1]++;
  } else if( inc.type() == IncidentType::EndProcessing ) {
    m_activeEventsPerSource[fid1]--;
    disconnectIfFinished( fid1 );
    *m_sourceID1.get(inc.context()) = "";
  }
  if( msgLvl(MSG::DEBUG) ) {
    for( auto& source: m_activeEventsPerSource )
      msg(MSG::DEBUG) << "SourceID: " << source.first << " active events: " << source.second << endmsg;
  }
 
  // Nothing to do if secondary event selector is ByteStream
  if (m_secondaryByteStream) {
    return;
  }
 
  // Secondary guid
  SG::SourceID fid2;
  if (inc.type() == IncidentType::BeginProcessing) {
    if ( Atlas::hasExtendedEventContext(inc.context()) ) {
      fid2 = Atlas::getExtendedEventContext(inc.context()).proxy()->sourceID("SecondaryEventSelector");
    }
    *m_sourceID2.get(inc.context()) = fid2;
  }
  else {
    fid2 = *m_sourceID2.get(inc.context());
  }
 
  if( fid2.empty() ) {
    ATH_MSG_WARNING("could not read event source ID from incident event context with key SecondaryEventSelector");
    return;
  }
 
  ATH_MSG_DEBUG("**  MN Incident handler " << inc.type() << " Event source ID=" << fid2 );
  if( inc.type() == IncidentType::BeginProcessing ) {
    // increment the events-per-file counter for FID
    m_activeEventsPerSource[fid2]++;
  } else if( inc.type() == IncidentType::EndProcessing ) {
    m_activeEventsPerSource[fid2]--;
    m_secondarySelector->disconnectIfFinished( fid2 );
    *m_sourceID2.get(inc.context()) = "";
  }
  if( msgLvl(MSG::DEBUG) ) {
    for( auto& source: m_activeEventsPerSource )
      msg(MSG::DEBUG) << "SourceID: " << source.first << " active events: " << source.second << endmsg;
  }
}