Class which reads a root file containing "commissioning histograms", analyzes the histograms to extract "monitorables", and creates summary histograms. More...

#include <SiStripCommissioningOfflineClient.h>

Inheritance diagram for SiStripCommissioningOfflineClient:

Public Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &)

virtual void	beginRun (const edm::Run &, const edm::EventSetup &)

virtual void	endJob ()

	SiStripCommissioningOfflineClient (const edm::ParameterSet &)

virtual	~SiStripCommissioningOfflineClient ()

Public Member Functions inherited from edm::EDAnalyzer
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

	EDAnalyzer ()

ModuleDescription const &	moduleDescription () const

std::string	workerType () const

virtual	~EDAnalyzer ()

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

	EDConsumerBase ()

ProductHolderIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductHolderIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductHolderIndexAndSkipBit > &) const

std::vector < ProductHolderIndexAndSkipBit > const &	itemsToGetFromEvent () const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesDependentUpon (const std::string &iProcessName, std::vector< const char * > &oModuleLabels) const

void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const

bool	registeredToConsume (ProductHolderIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

void	updateLookup (BranchType iBranchType, ProductHolderIndexHelper const &)

virtual	~EDConsumerBase ()

Protected Types
typedef std::vector< TH1 * >	Histos

typedef std::map< uint32_t, Histos >	HistosMap

Protected Member Functions
virtual void	createHistos (const edm::ParameterSet &, const edm::EventSetup &)

virtual void	setInputFiles (std::vector< std::string > &, const std::string, uint32_t, bool)

virtual void	uploadToConfigDb ()

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Protected Attributes
bool	analyzeHistos_

DQMStore *	bei_

bool	clientHistos_

bool	collateHistos_

bool	createSummaryPlots_

CommissioningHistograms *	histos_

std::vector< std::string >	inputFiles_

HistosMap	map_

std::string	outputFileName_

edm::ParameterSet	parameters_

std::vector< SummaryPlot >	plots_

uint32_t	runNumber_

sistrip::RunType	runType_

bool	uploadToDb_

std::string	xmlFile_

Additional Inherited Members
Public Types inherited from edm::EDAnalyzer
typedef EDAnalyzer	ModuleType

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

Static Public Member Functions inherited from edm::EDAnalyzer
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &)

Detailed Description

Class which reads a root file containing "commissioning histograms", analyzes the histograms to extract "monitorables", and creates summary histograms.

Author: M.Wingham, R.Bainbridge

Definition at line 29 of file SiStripCommissioningOfflineClient.h.

Member Typedef Documentation

typedef std::vector<TH1*> SiStripCommissioningOfflineClient::Histos

protected

Definition at line 85 of file SiStripCommissioningOfflineClient.h.

typedef std::map<uint32_t,Histos> SiStripCommissioningOfflineClient::HistosMap

protected

Definition at line 88 of file SiStripCommissioningOfflineClient.h.

Constructor & Destructor Documentation

SiStripCommissioningOfflineClient::SiStripCommissioningOfflineClient ( const edm::ParameterSet & pset )

Definition at line 35 of file SiStripCommissioningOfflineClient.cc.

References collateHistos_, edm::ParameterSet::getUntrackedParameter(), inputFiles_, LogTrace, sistrip::mlDqmClient_, setInputFiles(), and AlCaHLTBitMon_QueryRunRegistry::string.

   : bei_( edm::Service<DQMStore>().operator->() ),
     histos_(0),
     //inputFiles_( pset.getUntrackedParameter< std::vector<std::string> >( "InputRootFiles", std::vector<std::string>() ) ),
     outputFileName_( pset.getUntrackedParameter<std::string>( "OutputRootFile", "" ) ),
     collateHistos_( !pset.getUntrackedParameter<bool>( "UseClientFile", false ) ),
     analyzeHistos_( pset.getUntrackedParameter<bool>( "AnalyzeHistos", true ) ),
     xmlFile_( (pset.getUntrackedParameter<edm::FileInPath>( "SummaryXmlFile", edm::FileInPath() )).fullPath() ),
     createSummaryPlots_( false ),
     clientHistos_( false ), 
     uploadToDb_( false ), 
     runType_(sistrip::UNKNOWN_RUN_TYPE),
     runNumber_(0),
     map_(),
     plots_(),
     parameters_(pset)
 {
   LogTrace(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Constructing object...";
   setInputFiles( inputFiles_,
          pset.getUntrackedParameter<std::string>( "FilePath" ),
          pset.getUntrackedParameter<uint32_t>("RunNumber"), 
          collateHistos_ );
 }

SiStripCommissioningOfflineClient::~SiStripCommissioningOfflineClient ( )

virtual

Definition at line 63 of file SiStripCommissioningOfflineClient.cc.

References LogTrace, and sistrip::mlDqmClient_.

                                                                       {
   LogTrace(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Destructing object...";
 }

Member Function Documentation

void SiStripCommissioningOfflineClient::analyze	(	const edm::Event &	event,
		const edm::EventSetup &	setup
	)

virtual

Implements edm::EDAnalyzer.

Definition at line 363 of file SiStripCommissioningOfflineClient.cc.

References edm::EventID::event(), edm::EventBase::id(), LogTrace, and sistrip::mlDqmClient_.

                                                       {
   if ( !(event.id().event()%10) ) {
     LogTrace(mlDqmClient_) 
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Empty event loop! User can kill job...";
   }
 }

void SiStripCommissioningOfflineClient::beginRun	(	const edm::Run &	run,
		const edm::EventSetup &	setup
	)

virtual

Reimplemented from edm::EDAnalyzer.

Definition at line 71 of file SiStripCommissioningOfflineClient.cc.

                                                                                                 {
   LogTrace(mlDqmClient_) 
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Analyzing root file(s)...";
 
   // Check for null pointer
   if ( !bei_ ) {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " NULL pointer to DQMStore!"
       << " Aborting...";
     return;
   }
   bei_->setVerbose(0);
 
   // Check if .root file can be opened
   std::vector<std::string>::const_iterator ifile = inputFiles_.begin();
   for ( ; ifile != inputFiles_.end(); ifile++ ) {
     std::ifstream root_file;
     root_file.open( ifile->c_str() );
     if( !root_file.is_open() ) {
       edm::LogError(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " The input root file \"" << *ifile
     << "\" could not be opened!"
     << " Please check the path and filename!";
     } else { 
       root_file.close(); 
       std::string::size_type found = ifile->find(sistrip::dqmClientFileName_);
       if ( found != std::string::npos && clientHistos_ ) {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " The input root files appear to be a mixture"
       << " of \"Source\" and \"Client\" files!"
       << " Aborting...";
     return;
       }
       if ( found != std::string::npos && inputFiles_.size() != 1 ) {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " There appear to be multiple input \"Client\" root files!"
       << " Aborting...";
     return;
       }
       if ( found != std::string::npos ) { clientHistos_ = true; }
     }
   }
   if ( clientHistos_ && inputFiles_.size() == 1 ) {
     edm::LogVerbatim(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Collated histograms found in input root file \""
       << inputFiles_[0] << "\"";
   }
   
   // Check if .xml file can be opened
   if ( !xmlFile_.empty() ) {
     std::ifstream xml_file;
     xml_file.open( xmlFile_.c_str() );
     if( !xml_file.is_open() ) {
       edm::LogError(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " The SummaryPlot XML file \"" << xmlFile_
     << "\" could not be opened!"
     << " Please check the path and filename!"
     << " Aborting...";
       return;
     } else { 
       createSummaryPlots_ = true;
       xml_file.close(); 
     }
   }
 
   // Open root file(s) and create ME's
   if ( inputFiles_.empty() ) {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " No input root files specified!";
     return;
   }
 
   edm::LogVerbatim(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Opening root files. This may take some time!...";
   std::vector<std::string>::const_iterator jfile = inputFiles_.begin();
   for ( ; jfile != inputFiles_.end(); jfile++ ) {
     LogTrace(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Opening root file \"" << *jfile
       << "\"... (This may take some time.)";
     if ( clientHistos_ ) {
       bei_->open( *jfile, false, sistrip::collate_, "" );
     } else { 
       bei_->open( *jfile, false, "SiStrip", sistrip::collate_ );
     }
     LogTrace(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Opened root file \"" << *jfile << "\"!";
   }
   edm::LogVerbatim(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Opened " << inputFiles_.size() << " root files!";
   
   // Retrieve list of histograms
   std::vector<std::string> contents;
   bei_->getContents( contents ); 
   
   // If using client file, remove "source" histograms from list
   if ( clientHistos_ ) {
     std::vector<std::string> temp;
     std::vector<std::string>::iterator istr = contents.begin();
     for ( ; istr != contents.end(); istr++ ) {
       if ( istr->find(sistrip::collate_) != std::string::npos ) { 
     temp.push_back( *istr );
       }
     }
     contents.clear();
     contents = temp;
   }
   
   // Some debug
   LogTrace(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Found " << contents.size() 
     << " directories containing MonitorElements";
   
   // Some more debug
   if (0) {
     std::stringstream ss;
     ss << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
        << " Directories found: " << std::endl;
     std::vector<std::string>::iterator istr = contents.begin();
     for ( ; istr != contents.end(); istr++ ) { ss << " " << *istr << std::endl; }
     LogTrace(mlDqmClient_) << ss.str();
   }
   
   // Extract run type from contents
   runType_ = CommissioningHistograms::runType( bei_, contents ); 
   
   // Extract run number from contents
   runNumber_ = CommissioningHistograms::runNumber( bei_, contents ); 
 
   // Copy custom information to the collated structure
   CommissioningHistograms::copyCustomInformation( bei_, contents );
 
   // Check runType
   if ( runType_ == sistrip::UNKNOWN_RUN_TYPE ) { 
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Unknown commissioning runType: " 
       << SiStripEnumsAndStrings::runType( runType_ )
       << " and run number is " << runNumber_;
     return;
   } else {
     edm::LogVerbatim(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Run type is " 
       << SiStripEnumsAndStrings::runType( runType_ )
       << " and run number is " << runNumber_;
   }
   
   // Open and parse "summary plot" xml file
   if ( createSummaryPlots_ ) {
     edm::LogVerbatim(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Parsing summary plot XML file...";
     SummaryPlotXmlParser xml_file;
     xml_file.parseXML(xmlFile_);
     plots_ = xml_file.summaryPlots(runType_);
     edm::LogVerbatim(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Parsed summary plot XML file and found " 
       << plots_.size() << " plots defined!";
   } else {
     edm::LogWarning(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Null string for SummaryPlotXmlFile!"
       << " No summary plots will be created!";
   }
   
   // Some debug
   std::stringstream ss;
   ss << "[SiStripCommissioningOfflineClient::" << __func__ << "]" << std::endl
      << " Input root files      : ";
   if ( inputFiles_.empty() ) { ss << "(none)"; }
   else {
     std::vector<std::string>::const_iterator ifile = inputFiles_.begin();
     for ( ; ifile != inputFiles_.end(); ifile++ ) {
       if ( ifile != inputFiles_.begin() ) { 
     ss << std::setw(25) << std::setfill(' ') << ": ";
       }
       ss << "\"" << *ifile << "\"" << std::endl; 
     }
   }
   ss << " Run type              : \"" 
      << SiStripEnumsAndStrings::runType( runType_ ) << "\"" << std::endl
      << " Run number            :  " << runNumber_ << std::endl
      << " Summary plot XML file : ";
   if ( xmlFile_.empty() ) { ss << "(none)"; }
   else { ss << "\"" << xmlFile_ << "\""; }
   edm::LogVerbatim(mlDqmClient_) << ss.str();
 
   // Virtual method that creates CommissioningHistogram object
   LogTrace(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Creating CommissioningHistogram object...";
   createHistos(parameters_, setup); 
   if ( histos_ ) {
     LogTrace(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Created CommissioningHistogram object!";
   } else {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " NULL pointer to CommissioningHistogram object!"
       << " Aborting...";
     return;
   }
   
   // Perform collation
   if ( histos_ ) { 
     histos_->extractHistograms( contents ); 
   }
   
   // Perform analysis
   if ( analyzeHistos_ ) { 
     LogTrace(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Analyzing histograms...";
     if ( histos_ ) { histos_->histoAnalysis( true ); }
     LogTrace(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Analyzed histograms!";
   } else {
     edm::LogWarning(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " No histogram analysis performed!";
   }
   
   // Create summary plots
   if ( createSummaryPlots_ ) { 
     edm::LogVerbatim(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Generating summary plots...";
     std::vector<SummaryPlot>::const_iterator iplot =  plots_.begin();
     for ( ; iplot != plots_.end(); iplot++ ) {
       if ( histos_ ) { 
     histos_->createSummaryHisto( iplot->monitorable(),
                      iplot->presentation(),
                      iplot->level(),
                      iplot->granularity() );
       }
     }
     edm::LogVerbatim(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Generated summary plots!";
   } else {
     edm::LogWarning(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " No summary plots generated!";
   }
   
   // Save client root file
   if ( histos_ ) {
     bool save = parameters_.getUntrackedParameter<bool>( "SaveClientFile", true );
     if ( save ) { histos_->save( outputFileName_, runNumber_ ); }
     else {
       edm::LogVerbatim(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Client file not saved!";
     }
   }
   
   // Virtual method to trigger the database upload
   uploadToConfigDb();
   
   // Print analyses
   if ( histos_ ) { 
     histos_->printAnalyses(); 
     histos_->printSummary(); 
   }
   
   // Remove all ME/CME objects
   if ( histos_ ) { histos_->remove(); } 
   
   edm::LogVerbatim(mlDqmClient_)
     << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
     << " Finished analyzing root file(s)...";
   
 }

void SiStripCommissioningOfflineClient::createHistos	(	const edm::ParameterSet &	pset,
		const edm::EventSetup &	setup
	)

protectedvirtual

Reimplemented in SiStripCommissioningOfflineDbClient.

Definition at line 378 of file SiStripCommissioningOfflineClient.cc.

References sistrip::APV_LATENCY, sistrip::APV_TIMING, bei_, sistrip::CALIBRATION, sistrip::CALIBRATION_DECO, sistrip::CALIBRATION_SCAN, sistrip::CALIBRATION_SCAN_DECO, CommissioningHistograms::configure(), sistrip::FAST_CABLING, sistrip::FED_CABLING, sistrip::FINE_DELAY, histos_, sistrip::mlDqmClient_, sistrip::NOISE, sistrip::OPTO_SCAN, sistrip::PEDESTALS, sistrip::PEDS_ONLY, runType_, sistrip::UNDEFINED_RUN_TYPE, sistrip::UNKNOWN_RUN_TYPE, and sistrip::VPSP_SCAN.

Referenced by beginRun().

                                                                                                               {
   
   // Check pointer
   if ( histos_ ) {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " CommissioningHistogram object already exists!"
       << " Aborting...";
     return;
   } 
   
   // Check pointer to BEI
   if ( !bei_ ) {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " NULL pointer to DQMStore!";
     return;
   }
 
   // Create "commissioning histograms" object 
   if      ( runType_ == sistrip::FAST_CABLING )         { histos_ = new FastFedCablingHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::FED_CABLING )          { histos_ = new FedCablingHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::APV_TIMING )           { histos_ = new ApvTimingHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::OPTO_SCAN )            { histos_ = new OptoScanHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::VPSP_SCAN )            { histos_ = new VpspScanHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::PEDESTALS )            { histos_ = new PedestalsHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::PEDS_ONLY )            { histos_ = new PedsOnlyHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::NOISE )                { histos_ = new NoiseHistograms( pset, bei_ ); }
   else if ( runType_ == sistrip::APV_LATENCY      ||
             runType_ == sistrip::FINE_DELAY           ) { histos_ = new SamplingHistograms( pset, bei_,runType_ ); }
   else if ( runType_ == sistrip::CALIBRATION      ||
         runType_ == sistrip::CALIBRATION_DECO ||
         runType_ == sistrip::CALIBRATION_SCAN ||
         runType_ == sistrip::CALIBRATION_SCAN_DECO) { histos_ = new CalibrationHistograms( pset, bei_,runType_ ); }
   else if ( runType_ == sistrip::UNDEFINED_RUN_TYPE   ) { 
     histos_ = 0; 
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Undefined run type!";
     return;
   } else if ( runType_ == sistrip::UNKNOWN_RUN_TYPE )   { 
     histos_ = 0;
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Unknown run type!";
     return;
   }
   histos_->configure(pset,setup);
 }

void SiStripCommissioningOfflineClient::endJob ( void )

virtual

Reimplemented from edm::EDAnalyzer.

Definition at line 374 of file SiStripCommissioningOfflineClient.cc.

374 {}

void SiStripCommissioningOfflineClient::setInputFiles	(	std::vector< std::string > &	files,
		const std::string	path,
		uint32_t	run_number,
		bool	collate_histos
	)

protectedvirtual

Definition at line 430 of file SiStripCommissioningOfflineClient.cc.

References dqmPostProcessing_online::DIR, convertXMLtoSQLite_cfg::fileName, compare_using_db::ifile, LogTrace, sistrip::mlDqmClient_, NULL, cmsHarvester::path, cmsHarvester::run_number, contentValuesCheck::ss, and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by SiStripCommissioningOfflineClient().

                                                      {
 
   std::string runStr;
   std::stringstream ss;
   ss << std::setfill('0') << std::setw(8) << run_number;
   runStr = ss.str();
   
   std::string nameStr = "";
   if ( !collate_histos ) { nameStr = "SiStripCommissioningClient_"; }
   else { nameStr = "SiStripCommissioningSource_"; }
 
   LogTrace("TEST") << " runStr " << runStr;
 
   // Open directory
   DIR* dp;
   struct dirent* dirp;
   if ( (dp = opendir(path.c_str())) == NULL ) {
     edm::LogError(mlDqmClient_) 
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " Error locating directory \"" << path
       << "\". No such directory!";
     return;
   }
 
   // Find compatible files
   while ( (dirp = readdir(dp)) != NULL ) {
     std::string fileName(dirp->d_name);
     bool goodName = ( fileName.find(nameStr) != std::string::npos );
     bool goodRun  = ( fileName.find(runStr) != std::string::npos );
     bool rootFile = ( fileName.find(".root") != std::string::npos );
     //bool rootFile = ( fileName.rfind(".root",5) == fileName.size()-5 );
     if ( goodName && goodRun && rootFile ) {
       std::string entry = path;
       entry += "/";
       entry += fileName;
       files.push_back(entry);
     }
   }
   closedir(dp);
 
   // Some debug  
   if ( !collate_histos && files.size() > 1 ) {
     std::stringstream ss;
     ss << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
        << " Found more than one client file!";
     std::vector<std::string>::const_iterator ifile = files.begin();
     std::vector<std::string>::const_iterator jfile = files.end();
     for ( ; ifile != jfile; ++ifile ) { ss << std::endl << *ifile; }
     edm::LogError(mlDqmClient_) << ss.str();
   } else if ( files.empty() ) {
     edm::LogError(mlDqmClient_)
       << "[SiStripCommissioningOfflineClient::" << __func__ << "]"
       << " No input files found!" ;
   }
 
 }