JSON file parser for CMS data quality in SFrame
This assumes that you have a variable called m_jsonName that contains the location of your JSON file and also a flag m_isData that tells whether you're running on data or not.
// External include(s):
#include "../../GoodRunsLists/include/TGoodRunsListReader.h"
...
void MyAnalysis::BeginCycle() throw( SError ) {
//
// Load the GRL:
//
if (m_isData) {
m_logger << INFO << "Loading GoodRunsList from file: " << m_jsonName << SLogger::endmsg;
Root::TGoodRunsListReader reader( TString( m_jsonName.c_str() ) );
if( ! reader.Interpret() ) {
m_logger << FATAL << "Couldn't read in the GRL!" << SLogger::endmsg;
throw SError( ( "Couldn't read in file: " + m_jsonName ).c_str(), SError::SkipCycle );
}
m_grl = reader.GetMergedGoodRunsList();
m_grl.Summary();
m_grl.SetName( "MyGoodRunsList" );
//
// Add it as a configuration object, so that the worker nodes will receive it:
//
AddConfigObject( &m_grl );
}
return;
}
...
void MyAnalysis::BeginInputData( const SInputData& ) throw( SError ) {
if (m_isData) {
TObject* grl;
if( ! ( grl = GetConfigObject( "MyGoodRunsList" ) ) ) {
m_logger << FATAL << "Can't access the GRL!" << SLogger::endmsg;
throw SError( "Can't access the GRL!", SError::SkipCycle );
}
m_grl = *( dynamic_cast< Root::TGoodRunsList* >( grl ) );
}
return;
}
...
void MyAnalysis::ExecuteEvent( const SInputData&, Double_t ) throw( SError ) {
// might be better in a separate function (e.g. bool MyAnalysis::isGoodEvent(runNumber, lumiSection))
if (m_isData) {
bool isGood = m_grl.HasRunLumiBlock( runNumber, lumiSection );
if( !isGood ) {
m_logger << DEBUG << "Bad event! Run: " << runNumber << " - Lumi Section: " << lumiSection << SLogger::endmsg;
throw SError( SError::SkipEvent );
}
else m_logger << DEBUG << "Good event! Run: " << runNumber << " - Lumi Section: " << lumiSection << SLogger::endmsg;
}
}
// External include(s):
#include "../../GoodRunsLists/include/TGoodRunsList.h"
...
class MyAnalysis : public SCycleBase {
public:
...
private:
//
// Further objects
//
Root::TGoodRunsList m_grl;
...
In the JobConfiguration part, add before the Library of your analysis code:
<Library Name="libGoodRunsLists" />
The JSON parser is taken from https://github.com/open-source-parsers/jsoncpp Most of the other code is taken from Max Baak and Attila Krasznahorkay, who developed this code for ATLAS analyses.