/data/refman/pasoursint/CMSSW_6_1_2_SLHC2_patch1/src/CondTools/L1Trigger/src/DataWriter.cc

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#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "CondTools/L1Trigger/interface/DataWriter.h"
#include "CondTools/L1Trigger/interface/Exception.h"
#include "CondCore/MetaDataService/interface/MetaData.h"
#include "CondCore/IOVService/interface/IOVProxy.h"
#include "CondCore/DBCommon/interface/Exception.h"

#include <utility>

namespace l1t
{
  DataWriter::DataWriter(){}
  DataWriter::~DataWriter(){}



std::string
DataWriter::writePayload( const edm::EventSetup& setup,
                          const std::string& recordType )
{
  WriterFactory* factory = WriterFactory::get();
  std::auto_ptr<WriterProxy> writer(factory->create( recordType + "@Writer" )) ;
  if( writer.get() == 0 )
    {
      throw cond::Exception( "DataWriter: could not create WriterProxy with name "
                             + recordType + "@Writer" ) ;
    }

  edm::Service<cond::service::PoolDBOutputService> poolDb;
  if (!poolDb.isAvailable())
    {
      throw cond::Exception( "DataWriter: PoolDBOutputService not available."
                             ) ;
    }

  // 2010-02-16: Move session and transaction to WriterProxy::save().  Otherwise, if another transaction is
  // started while WriterProxy::save() is called (e.g. in a ESProducer like L1ConfigOnlineProdBase), the
  // transaction here will become read-only.
//   cond::DbSession session = poolDb->session();
//   cond::DbScopedTransaction tr(session);
//   // if throw transaction will unroll
//   tr.start(false);

  // update key to have new payload registered for record-type pair.
  //  std::string payloadToken = writer->save( setup, session ) ;
  std::string payloadToken = writer->save( setup ) ;

  edm::LogVerbatim( "L1-O2O" ) << recordType << " PAYLOAD TOKEN "
                               << payloadToken ;

//   tr.commit ();

  return payloadToken ;
}

void
DataWriter::writeKeyList( L1TriggerKeyList* keyList,
                          edm::RunNumber_t sinceRun,
                          bool logTransactions )
{
  edm::Service<cond::service::PoolDBOutputService> poolDb;
  if( !poolDb.isAvailable() )
    {
      throw cond::Exception( "DataWriter: PoolDBOutputService not available."
                             ) ;
    }

  cond::DbSession session = poolDb->session();
  cond::DbScopedTransaction tr(session);
  tr.start(false);

  // Write L1TriggerKeyList payload and save payload token before committing
  boost::shared_ptr<L1TriggerKeyList> pointer(keyList);
  std::string payloadToken = session.storeObject(pointer.get(),
                                                 cond::classNameForTypeId(typeid(L1TriggerKeyList))
                                                 );
                        
  // Commit before calling updateIOV(), otherwise PoolDBOutputService gets
  // confused.
  tr.commit ();
  
  // Set L1TriggerKeyList IOV
  updateIOV( "L1TriggerKeyListRcd",
             payloadToken,
             sinceRun,
             logTransactions ) ;
}

bool
DataWriter::updateIOV( const std::string& esRecordName,
                       const std::string& payloadToken,
                       edm::RunNumber_t sinceRun,
                       bool logTransactions )
{
  edm::LogVerbatim( "L1-O2O" ) << esRecordName
                               << " PAYLOAD TOKEN " << payloadToken ;

  edm::Service<cond::service::PoolDBOutputService> poolDb;
  if (!poolDb.isAvailable())
    {
      throw cond::Exception( "DataWriter: PoolDBOutputService not available."
                             ) ;
    }

  bool iovUpdated = true ;

  if( poolDb->isNewTagRequest( esRecordName ) )
    {
      sinceRun = poolDb->beginOfTime() ;
      poolDb->createNewIOV( payloadToken,
                            sinceRun,
                            poolDb->endOfTime(),
                            esRecordName,
                            logTransactions ) ;
    }
  else
    {   
      cond::TagInfo tagInfo ;
      poolDb->tagInfo( esRecordName, tagInfo ) ;

      if( sinceRun == 0 ) // find last since and add 1
        {
          sinceRun = tagInfo.lastInterval.first ;
          ++sinceRun ;
        }

      if( tagInfo.lastPayloadToken != payloadToken )
        {
          poolDb->appendSinceTime( payloadToken,
                                   sinceRun,
                                   esRecordName,
                                   logTransactions ) ;
        }
      else
        {
          iovUpdated = false ;
          edm::LogVerbatim( "L1-O2O" ) << "IOV already up to date." ;
        }
    }

  if( iovUpdated )
    {
      edm::LogVerbatim( "L1-O2O" ) << esRecordName << " "
                                   << poolDb->tag( esRecordName )
                                   << " SINCE " << sinceRun ;
    }

  return iovUpdated ;
}

std::string
DataWriter::payloadToken( const std::string& recordName,
                          edm::RunNumber_t runNumber )
{
  edm::Service<cond::service::PoolDBOutputService> poolDb;
  if( !poolDb.isAvailable() )
    {
      throw cond::Exception( "DataWriter: PoolDBOutputService not available."
                             ) ;
    }

  // Get tag corresponding to EventSetup record name.
  std::string iovTag = poolDb->tag( recordName ) ;

  // Get IOV token for tag.
  cond::DbSession session = poolDb->session();
  cond::DbScopedTransaction tr(session);
  tr.start(true);
  cond::MetaData metadata(session ) ;
  std::string iovToken ;
  if( metadata.hasTag( iovTag ) )
    {
      iovToken = metadata.getToken( iovTag ) ;
    }
  if( iovToken.empty() )
    {
      return std::string() ;
    }

  // Get payload token for run number.

  cond::IOVProxy iov( session );
  iov.load(iovToken ) ;
  std::string payloadToken("");
  cond::IOVProxy::const_iterator iP = iov.find( runNumber );
  if( iP != iov.end() ){
    payloadToken = iP->token(); 
  }
  tr.commit() ;
  return payloadToken ;
}

std::string
DataWriter::lastPayloadToken( const std::string& recordName )
{
  edm::Service<cond::service::PoolDBOutputService> poolDb;
  if( !poolDb.isAvailable() )
    {
      throw cond::Exception( "DataWriter: PoolDBOutputService not available."
                             ) ;
    }

  cond::TagInfo tagInfo ;
  poolDb->tagInfo( recordName, tagInfo ) ;
  return tagInfo.lastPayloadToken ;
}

bool
DataWriter::fillLastTriggerKeyList( L1TriggerKeyList& output )
{
  std::string keyListToken =
    lastPayloadToken( "L1TriggerKeyListRcd" ) ;
  if( keyListToken.empty() )
    {
      return false ;
    }
  else
    {
      readObject( keyListToken, output ) ;
      return true ;
    }
}

} // ns