MetaDataSvc.cxx

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

 
#include "MetaDataSvc.h"
 
#include "Gaudi/Interfaces/IOptionsSvc.h"
#include "GaudiKernel/IAlgTool.h"
#include "GaudiKernel/IEvtSelector.h"
#include "GaudiKernel/IIncidentSvc.h"
#include "GaudiKernel/IIoComponentMgr.h"
#include "GaudiKernel/IOpaqueAddress.h"
#include "GaudiKernel/FileIncident.h"
#include "GaudiKernel/System.h"
 
#include "AthenaBaseComps/AthCnvSvc.h"
#include "StoreGate/StoreGateSvc.h"
#include "PersistentDataModel/DataHeader.h"
#include "RootAuxDynIO/RootAuxDynDefs.h"
 
#include "OutputStreamSequencerSvc.h"
 
#include <vector>
#include <sstream>
#include <functional>
 
namespace {
  bool leftString(std::string& s, char sc) {
    if (const auto pos = s.find(sc); pos != std::string::npos) {
      s.resize(pos);
      return true;
    }
    return false;
  }
}
 
 
//________________________________________________________________________________
MetaDataSvc::MetaDataSvc( const std::string& name, ISvcLocator* pSvcLocator )
    : base_class( name, pSvcLocator )
    , m_inputDataStore( "StoreGateSvc/InputMetaDataStore", name )
    , m_outputDataStore( "StoreGateSvc/MetaDataStore", name )
    , m_fileMgr( "FileMgr", name )
    , m_incSvc( "IncidentSvc", name )
    , m_outSeqSvc( "OutputStreamSequencerSvc", name )
    , m_persToClid{ { "DataHeader_p5", 222376821 },
                    { "EventStreamInfo_p3", 167728019 },
                    { "ByteStreamMetadataContainer_p1", 1076128893 },
                    { "IOVMetaDataContainer_p1", 1316383046 },
                    { "xAOD::EventFormat_v1", 243004407 },
                    { "xAOD::CutBookkeeperContainer_v1", 1234982351 },
                    { "xAOD::CutBookkeeperAuxContainer_v1", 1147935274 },
                    { "xAOD::TriggerMenuContainer_v1", 1107011239 },
                    { "DataVector<xAOD::TriggerMenu_v1>", 1107011239 },
                    { "xAOD::TriggerMenuAuxContainer_v1", 1212409402 },
                    { "xAOD::TriggerMenuJsonContainer_v1", 1221262614 },
                    { "DataVector<xAOD::TriggerMenuJson_v1>", 1221262614 },
                    { "xAOD::TriggerMenuJsonAuxContainer_v1", 373045213 },
                    { "xAOD::LumiBlockRangeContainer_v1", 1115934851 },
                    { "DataVector<xAOD::LumiBlockRange_v1>", 1115934851 },
                    { "xAOD::LumiBlockRangeAuxContainer_v1", 1251061086 },
                    { "xAOD::FileMetaData_v1", 178309087 },
                    { "xAOD::FileMetaDataAuxInfo_v1", 73252552 },
                    { "xAOD::RingSetConfContainer_v1", 1157997427 },
                    { "DataVector<xAOD::RingSetConf_v1>", 1157997427 },
                    { "xAOD::RingSetConfAuxContainer_v1", 1307745126 },
                    { "xAOD::TruthMetaDataContainer_v1", 1188015687 },
                    { "DataVector<xAOD::TruthMetaData_v1>", 1188015687 },
                    { "xAOD::TruthMetaDataAuxContainer_v1", 1094306618 } } {}
 
//________________________________________________________________________________
MetaDataSvc::~MetaDataSvc() = default;
 
//__________________________________________________________________________
StatusCode MetaDataSvc::initialize() {
   ATH_MSG_INFO("Initializing {}", name());
 
   // Retrieve InputMetaDataStore
   ATH_CHECK( m_inputDataStore.retrieve() );
   // Retrieve OutputMetaDataStore
   ATH_CHECK( m_outputDataStore.retrieve() );
   // Retrieve AddressCreator
   ATH_CHECK( m_addrCrtr.retrieve() );
 
   AthCnvSvc* cnvSvc = dynamic_cast<AthCnvSvc*>(m_addrCrtr.operator->());
   if (cnvSvc) {
      m_storageType = cnvSvc->repSvcType();
   } else {
      ATH_MSG_WARNING("Cannot get ConversionSvc Interface.");
   }
   // Get FileMgr
   ATH_CHECK( m_fileMgr.retrieve() );
 
   // Set to be listener for end of event
   ATH_CHECK( m_incSvc.retrieve() );
 
   ATH_CHECK( m_metaDataTools.retrieve() );
   ATH_MSG_INFO("Found " << m_metaDataTools);
 
   m_incSvc->addListener(this, "FirstInputFile", 80, true);
   m_incSvc->addListener(this, "BeginInputFile", 80, true);
   m_incSvc->addListener(this, "EndInputFile", 10, true);
   m_incSvc->addListener(this, "BeginInputMemFile", 80, true);
   m_incSvc->addListener(this, "EndInputMemFile", 10, true);
 
   // Register this service for 'I/O' events
   ServiceHandle<IIoComponentMgr> iomgr("IoComponentMgr", this->name());
   ATH_CHECK( iomgr.retrieve() );
   ATH_CHECK( iomgr->io_register(this) );
 
   ServiceHandle<Gaudi::Interfaces::IOptionsSvc> joSvc("JobOptionsSvc", name());
   if (!joSvc.retrieve().isSuccess()) {
      ATH_MSG_WARNING("Cannot get JobOptionsSvc.");
   } else {
      if (joSvc->has("EventSelector.InputCollections")) {
         // Get EventSelector to force in-time initialization and FirstInputFile incident
         ServiceHandle<IEvtSelector> evtsel("EventSelector", this->name());
         if (!evtsel.retrieve().isSuccess()) {
            ATH_MSG_WARNING("Cannot get EventSelector.");
         }
      }
   }
   // retrieve the output sequences service (EventService) if available
   m_outSeqSvc.retrieve().ignore();
 
   return(StatusCode::SUCCESS);
}
//__________________________________________________________________________
StatusCode MetaDataSvc::finalize() {
   // Release IncidentService
   if (!m_incSvc.release().isSuccess()) {
      ATH_MSG_WARNING("Cannot release IncidentService.");
   }
   // Release FileMgr
   if (!m_fileMgr.release().isSuccess()) {
      ATH_MSG_WARNING("Cannot release FileMgr.");
   }
   // Release AddressCreator
   if (!m_addrCrtr.release().isSuccess()) {
      ATH_MSG_WARNING("Cannot release AddressCreator.");
   }
   // Release OutputMetaDataStore
   if (!m_outputDataStore.release().isSuccess()) {
      ATH_MSG_WARNING("Cannot release OutputMetaDataStore.");
   }
   // Release InputMetaDataStore
   if (!m_inputDataStore.release().isSuccess()) {
      ATH_MSG_WARNING("Cannot release InputMetaDataStore.");
   }
   if (m_beginInputFileSeen && !m_allowMetaDataStop) {
      ATH_MSG_WARNING("EndInputFile was not received before finalize");
   }
   return(StatusCode::SUCCESS);
}
 
//__________________________________________________________________________
StatusCode MetaDataSvc::stop() {
   ATH_MSG_DEBUG("MetaDataSvc::stop()");
   // Fire metaDataStopIncident
   Incident metaDataStopIncident(name(), "MetaDataStop");
   m_incSvc->fireIncident(metaDataStopIncident);
   return(StatusCode::SUCCESS);
}
 
//________________________________________________________________________________
StatusCode MetaDataSvc::loadAddresses(StoreID::type storeID, IAddressProvider::tadList& tads) {
   if (storeID != StoreID::METADATA_STORE) { // should this (also) run in the INPUT_METADATA_STORE?
      return(StatusCode::SUCCESS);
   }
   if (!m_inputDataStore->contains<DataHeader>( name()) ) {
      return(StatusCode::SUCCESS);
   }
   const DataHeader* dataHeader = nullptr;
   ATH_CHECK( m_inputDataStore->retrieve( dataHeader, name()) );
   for (const DataHeaderElement& dhe : *dataHeader) {
      const CLID clid = dhe.getPrimaryClassID();
      if (clid != ClassID_traits<DataHeader>::ID()) {
         tads.push_back(dhe.getAddress(m_storageType, dhe.getKey()));
      }
   }
   return(StatusCode::SUCCESS);
}
//________________________________________________________________________________
StatusCode MetaDataSvc::newMetadataSource(const Incident& inc)
{
   const FileIncident* fileInc = dynamic_cast<const FileIncident*>(&inc);
   if (fileInc == nullptr) {
      ATH_MSG_ERROR("Unable to get FileName from EndInputFile incident");
      return StatusCode::FAILURE;
   }
   const std::string guid = fileInc->fileGuid();
   const std::string fileName = fileInc->fileName();
   m_allowMetaDataStop = false;
   m_beginInputFileSeen = true;
   if (!fileName.starts_with( "BSF:")) {
      // the input file is _not_ bytestream
      if (!m_clearedInputDataStore) {
         if (!m_inputDataStore->clearStore().isSuccess()) {
            ATH_MSG_WARNING("Unable to clear input MetaData Proxies");
         }
         m_clearedInputDataStore = true;
      }
      ATH_CHECK(initInputMetaDataStore(fileName));
   }
   StatusCode rc{StatusCode::SUCCESS};
   for (auto& tool : m_metaDataTools) {
      ATH_MSG_DEBUG(" calling beginInputFile on {} for GUID \"{}\"",
                    tool->name(), guid);
      if (tool->beginInputFile(guid).isFailure()) {
         ATH_MSG_ERROR("Unable to call beginInputFile for {}", tool->name());
         rc = StatusCode::FAILURE;
      }
   }
   return rc;
}
 
StatusCode MetaDataSvc::retireMetadataSource(const Incident& inc)
{
   const FileIncident* fileInc  = dynamic_cast<const FileIncident*>(&inc);
   if (fileInc == nullptr) {
      ATH_MSG_ERROR("Unable to get FileName from EndInputFile incident");
      return StatusCode::FAILURE;
   }
   const std::string guid = fileInc->fileGuid();
   ATH_MSG_DEBUG("retireMetadataSource: {}", fileInc->fileName());
   for (auto& tool : m_metaDataTools) {
      ATH_MSG_DEBUG(" calling endInputFile on {} for GUID \"{}\"",
                    tool->name(), guid);
      ATH_CHECK(tool->endInputFile(guid));
   }
   m_allowMetaDataStop = true;
   return StatusCode::SUCCESS;
}
 
StatusCode MetaDataSvc::prepareOutput()
{
   if (m_outputPrepared) {
      return StatusCode::SUCCESS;
   }
 
   StatusCode rc{StatusCode::SUCCESS};
   for (auto& tool : m_metaDataTools) {
      ATH_MSG_DEBUG(" calling metaDataStop for {}", tool->name());
      if (tool->metaDataStop().isFailure()) {
         ATH_MSG_ERROR("Unable to call metaDataStop for {}", tool->name());
         rc = StatusCode::FAILURE;
      }
   }
   if (!m_metaDataTools.release().isSuccess()) {
      ATH_MSG_WARNING("Cannot release " << m_metaDataTools);
   }
 
   m_outputPrepared = true;
   return rc;
}
 
// like prepareOutput() but for parallel streams
StatusCode MetaDataSvc::prepareOutput(const std::string& outputName)
{
   // default to the serial implementation if no output name given
   if( outputName.empty() ) {
       return prepareOutput();
   }
   ATH_MSG_DEBUG( "prepareOutput('{}')", outputName );
 
   StatusCode rc{StatusCode::SUCCESS};
   for (auto& tool : m_metaDataTools) {
      ATH_MSG_DEBUG("  calling metaDataStop for {}", tool->name());
      // planning to replace the call below with  (*it)->prepareOutput(outputName)
      if (tool->metaDataStop().isFailure()) {
         ATH_MSG_ERROR("Unable to call metaDataStop for {}", tool->name());
         rc = StatusCode::FAILURE;
      }
   }
   // MN: not releasing tools here - revisit when clear what happens on new file open
   return rc;
}
 
 
StatusCode MetaDataSvc::shmProxy(const std::string& tokenStr)
{
   if (m_addrCrtr.name() != "AthenaPoolSharedIOCnvSvc") {
      ATH_MSG_ERROR("shmProxy failed: unsupported AddressCreator " << m_addrCrtr.name());
      return StatusCode::FAILURE;
   }
 
   if (!m_clearedInputDataStore) {
      ATH_CHECK(m_inputDataStore->clearStore(true));
      m_clearedInputDataStore = true;
   }
   if (!m_clearedOutputDataStore) {
      ATH_CHECK(m_outputDataStore->clearStore(true));
      m_clearedOutputDataStore = true;
   }
 
   ATH_CHECK(addProxyToInputMetaDataStore(tokenStr));
   return StatusCode::SUCCESS;
}
 
//__________________________________________________________________________
void MetaDataSvc::handle(const Incident& inc) {
   const FileIncident* fileInc  = dynamic_cast<const FileIncident*>(&inc);
   if (fileInc == nullptr) {
      ATH_MSG_ERROR("Unable to get FileName from EndInputFile incident");
      return;
   }
   const std::string fileName = fileInc->fileName();
   ATH_MSG_DEBUG("handle() {} for {}", inc.type(), fileName);
 
   if (inc.type() == "FirstInputFile") {
      // Register open/close callback actions
      using namespace std::placeholders;
      Io::bfcn_action_t boa = std::bind(&MetaDataSvc::rootOpenAction, this, _1, _2);
      if (m_fileMgr->regAction(std::move(boa), Io::OPEN).isFailure()) {
         ATH_MSG_FATAL("Cannot register ROOT file open action with FileMgr.");
      }
      if (!initInputMetaDataStore(fileName).isSuccess()) {
         ATH_MSG_WARNING("Unable to initialize InputMetaDataStore");
      }
   } else if (inc.type() == "BeginInputFile" || inc.type() == "BeginInputMemFile") {
      if(newMetadataSource(inc).isFailure()) {
         ATH_MSG_ERROR("Could not process new metadata source {}", fileName);
      }
   } else if (inc.type() == "EndInputFile" || inc.type() == "EndInputMemFile") {
      if(retireMetadataSource(inc).isFailure()) {
         ATH_MSG_ERROR("Could not retire metadata source {}", fileName);
      }
   }
}
 
//__________________________________________________________________________
// This method is currently called only from OutputStreamSequencerSvc
StatusCode MetaDataSvc::transitionMetaDataFile(const std::string& outputConn, bool disconnect)
{
   ATH_MSG_DEBUG("transitionMetaDataFile: {}", outputConn );
 
   // this is normally called through EndInputFile inc, simulate it for EvSvc
   FileIncident inc("transitionMetaDataFile", "EndInputFile", "dummyMetaInputFileName", "");
   ATH_CHECK(retireMetadataSource(inc));
 
   // Reset flag to allow calling prepareOutput again at next transition
   m_outputPrepared = false;
 
   Incident metaDataStopIncident(name(), "MetaDataStop");
   m_incSvc->fireIncident(metaDataStopIncident);
 
   if( disconnect ) {
      AthCnvSvc* cnvSvc = dynamic_cast<AthCnvSvc*>(m_addrCrtr.operator->());
      if (cnvSvc) {
         if (!cnvSvc->disconnectOutput(outputConn).isSuccess()) {
            ATH_MSG_WARNING("Cannot get disconnect Output Files");
         }
      }
   }
 
   return(StatusCode::SUCCESS);
}
 
//__________________________________________________________________________
StatusCode MetaDataSvc::io_reinit() {
   ATH_MSG_INFO("I/O reinitialization...");
   ATH_MSG_DEBUG("Dumping InputMetaDataStore: {}", m_inputDataStore->dump());
   ATH_MSG_DEBUG("Dumping OutputMetaDataStore: {}", m_outputDataStore->dump());
   for (const auto& tool : m_metaDataTools) {
      ATH_MSG_INFO("Attached MetaDataTool: {}", tool->name());
   }
   m_outputPrepared = false;
   return(StatusCode::SUCCESS);
}
//__________________________________________________________________________
StatusCode MetaDataSvc::rootOpenAction(FILEMGR_CALLBACK_ARGS) {
   return(StatusCode::SUCCESS);
}
//__________________________________________________________________________
// check if the metadata object key contains Stream name (added by SharedWriter in MetaDataSvc)
// remove stream part from the key (i.e. modify the parameter) and return it
std::string MetaDataSvc::removeStreamFromKey(std::string& key) {
   size_t pos = key.find(m_streamInKeyMark);
   if( pos==std::string::npos ) return "";
   size_t epos = key.find(']', pos);
   size_t spos = pos + m_streamInKeyMark.size();
   std::string stream = key.substr( spos, epos - spos );
   //cppcheck-suppress uselessCallsSubstr
   key = key.substr(0, pos) + key.substr(epos+1);
   return stream;
}
 
//__________________________________________________________________________
[[nodiscard]] std::set<std::string> MetaDataSvc::getPerStreamKeysFor(const std::string& key) const {
    if (!m_streamKeys.contains(key)) {
        return {key};
    }
    return m_streamKeys.at(key);
}
 
//__________________________________________________________________________
StatusCode MetaDataSvc::addProxyToInputMetaDataStore(const std::string& tokenStr) {
   std::string fileName = tokenStr.substr(tokenStr.find("[FILE=") + 6);
   leftString(fileName, ']');
   std::string className = tokenStr.substr(tokenStr.find("[PNAME=") + 7);
   leftString(className, ']');
   std::string contName = tokenStr.substr(tokenStr.find("[CONT=") + 6);
   leftString(contName,']');
   std::size_t pos1 = contName.find('(');
   std::string keyName = contName.substr(pos1 + 1, contName.size() - pos1 - 2);
   std::size_t pos2 = keyName.find('/');
   if (pos2 != std::string::npos) keyName = keyName.substr(pos2 + 1);
   std::string numName = tokenStr.substr(tokenStr.find("[NUM=") + 5);
   leftString(numName,']');
   unsigned long num = 0;
   std::istringstream iss(numName);
   iss >> num;
   CLID clid = m_persToClid[className];
 
   // make stream-unique keys for infile metadata objects
   // AthenaOutputStream will use this to distribute objects to the right stream (and restore the original key)
   if( clid == 178309087 ) {  // FileMetaData
      std::string newName = std::format("{}{}{}{}", keyName, m_streamInKeyMark, fileName, "]");
      ATH_MSG_DEBUG("Recording {} as {}", keyName, newName);
      m_streamKeys[keyName].insert(newName);
      keyName = std::move(newName);
   }
   if( clid == 73252552 ) {  // FileMetaDataAuxInfo
      std::string newName = std::format("{}{}{}]{}",
                                       keyName.substr(0, keyName.find(RootAuxDynIO::AUX_POSTFIX)),
                                       m_streamInKeyMark,
                                       fileName,
                                       RootAuxDynIO::AUX_POSTFIX);
      ATH_MSG_DEBUG("Recording {} as {}", keyName, newName);
      m_streamKeys[keyName].insert(newName);
      keyName = std::move(newName);
   }
   const std::string par[3] = { "SHM" , keyName , std::move(className) };
   const unsigned long ipar[2] = { num , 0 };
   IOpaqueAddress* opqAddr = nullptr;
   SG::DataProxy* dp = m_inputDataStore->proxy(clid, keyName);
   if (dp != nullptr) {
      ATH_MSG_DEBUG("Resetting duplicate proxy for: {}#{} from file: {}",
                    clid, keyName, fileName);
      dp->reset();
   }
   if (!m_addrCrtr->createAddress(m_storageType, clid, par, ipar, opqAddr).isSuccess()) {
      ATH_MSG_FATAL("addProxyToInputMetaDataStore: Cannot create address for {}", tokenStr);
      return(StatusCode::FAILURE);
   }
   if (m_inputDataStore->recordAddress(keyName, opqAddr).isFailure()) {
      ATH_MSG_FATAL("addProxyToInputMetaDataStore: Cannot create proxy for {}", tokenStr);
      return(StatusCode::FAILURE);
   }
   if (m_inputDataStore->accessData(clid, keyName) == nullptr) {
      ATH_MSG_FATAL("addProxyToInputMetaDataStore: Cannot access data for {}", tokenStr);
      return(StatusCode::FAILURE);
   }
   if (keyName.find(RootAuxDynIO::AUX_POSTFIX) != std::string::npos
       && m_inputDataStore->symLink(clid, keyName, 187169987).isFailure()) {
      ATH_MSG_WARNING("addProxyToInputMetaDataStore: Cannot symlink to AuxStore for {}", tokenStr);
   }
   return(StatusCode::SUCCESS);
}
//__________________________________________________________________________
StatusCode MetaDataSvc::initInputMetaDataStore(const std::string& fileName) {
   ATH_MSG_DEBUG("initInputMetaDataStore: file name {}", fileName);
   m_clearedInputDataStore = false;
   // Load proxies for InputMetaDataStore
   if (m_metaDataCont.value().empty()) {
      ATH_MSG_DEBUG("MetaDataSvc called without MetaDataContainer set.");
      return(StatusCode::SUCCESS);
   }
   if (fileName.starts_with( "BSF:")) {
      ATH_MSG_DEBUG("MetaDataSvc called for non ROOT file.");
   } else if (fileName.compare(0, 3, "SHM")==0) {
      ATH_MSG_DEBUG("MetaDataSvc called for shared memory.");
   } else {
      const std::string par[2] = {
         fileName,
         std::format("{}(DataHeader)", m_metaDataCont.value())
      };
      const std::string parOld[2] = {
         fileName,
         std::format("{}{}", m_metaDataCont.value(), "DataHeader")
      };
      if (m_inputDataStore->contains<DataHeader>(name())) {
         ATH_MSG_DEBUG("initInputMetaDataStore: MetaData Store already contains DataHeader, key = {}", name());
      } else {
         const unsigned long ipar[2] = { 0 , 0 };
         IOpaqueAddress* opqAddr = nullptr;
         if (m_addrCrtr->createAddress(m_storageType, ClassID_traits<DataHeader>::ID(), par, ipar, opqAddr).isSuccess()
          || m_addrCrtr->createAddress(m_storageType, ClassID_traits<DataHeader>::ID(), parOld, ipar, opqAddr).isSuccess()) {
            if (m_inputDataStore->recordAddress(name(), opqAddr).isFailure()) {
               ATH_MSG_WARNING("initInputMetaDataStore: Cannot create proxy for DataHeader, key = {}", name());
            }
         }
      }
      std::list<SG::TransientAddress*> tList;
      ATH_CHECK(loadAddresses(StoreID::METADATA_STORE, tList));
      for (SG::TransientAddress* tad : tList) {
         CLID clid = tad->clID();
         ATH_MSG_VERBOSE("initInputMetaDataStore: add proxy for clid = {}, key = {}",
                         clid, tad->name());
         if (m_inputDataStore->contains(tad->clID(), tad->name())) {
            ATH_MSG_DEBUG("initInputMetaDataStore: MetaData Store already contains clid = {}, key = {}",
                          clid, tad->name());
         } else {
            if (!m_inputDataStore->recordAddress(tad->name(), tad->address())) {
               ATH_MSG_ERROR("initInputMetaDataStore: Cannot create proxy for clid = {}, key = {}",
                             clid, tad->name());
               return StatusCode::FAILURE;
            }
         }
 
         for (CLID tclid : tad->transientID()) {
            if (tclid != clid) {
               if (m_inputDataStore->symLink (clid, tad->name(), tclid).isFailure()) {
                  ATH_MSG_WARNING("Cannot make autosymlink from {}/{} to {}",
                                  clid, tad->name(), tclid);
               }
            }
         }
         delete tad;
      }
      tList.clear();
   }
   ATH_MSG_DEBUG("Loaded input meta data store proxies");
   return(StatusCode::SUCCESS);
}
 
 
const std::string MetaDataSvc::currentRangeID() const
{
   const EventContext& ctx = Gaudi::Hive::currentContext();
   return m_outSeqSvc.isValid()? m_outSeqSvc->currentRangeID(ctx) : "";
}
 
 
CLID MetaDataSvc::remapMetaContCLID( const CLID& itemID ) const
{
   if (!m_handledClasses.contains(itemID)) {
      ATH_MSG_DEBUG("Not translating metadata item ID #{}", itemID);
      return itemID;
   }
 
   std::string itemName;
   CLID contID = 0;
   if (m_classIDSvc->getTypeNameOfID(itemID, itemName).isSuccess()) {
     const std::string contName = std::format("MetaCont<{}>", itemName);
     ATH_MSG_DEBUG("Transforming {} to {} for output",
                   contName, itemName);
     if (m_classIDSvc->getIDOfTypeName(contName, contID).isSuccess())
       return contID;
   }
 
   return itemID;
}
 
void MetaDataSvc::recordHook(const std::type_info& typeInfo) {
  const std::string& typeName = System::typeinfoName(typeInfo);
  ATH_MSG_VERBOSE("Handling record event of type {}", typeName);
 
  CLID itemID = 0;
  if (m_classIDSvc->getIDOfTypeInfoName(typeName, itemID).isSuccess()) {
    auto result = m_handledClasses.insert(itemID);
    if (result.second)
      ATH_MSG_DEBUG("MetaDataSvc will handle {} ClassID: {}", typeName, itemID);
  }
}
 
void MetaDataSvc::removeHook(const std::type_info& typeInfo) {
  const std::string& typeName = System::typeinfoName(typeInfo);
  ATH_MSG_VERBOSE("Handling removal event of type {}", typeName);
 
  CLID itemID = 0;
  if (m_classIDSvc->getIDOfTypeInfoName(typeName, itemID).isSuccess()) {
    if (0 < m_handledClasses.erase(itemID))
      ATH_MSG_DEBUG("MetaDataSvc will no longer handle {} ClassID: {}",
                    typeName, itemID);
  }
}
 
void MetaDataSvc::lockTools() const {
   ATH_MSG_DEBUG("Locking metadata tools");
   for(auto& tool : m_metaDataTools ) {
      const ILockableTool *lockable = dynamic_cast<const ILockableTool*>( tool.get() );
      if( lockable ) lockable->lock_shared();
   }
}
 
void MetaDataSvc::unlockTools() const {
   ATH_MSG_DEBUG("Unlocking metadata tools");
   for(auto& tool : m_metaDataTools ) {
      const ILockableTool *lockable = dynamic_cast<const ILockableTool*>( tool.get() );
      if( lockable ) lockable->unlock_shared();
   }
}