anaQA.C

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//---------------------------------------------------------------------------
enum anaModes
{
    mLocal  = 0, 
    mPROOF  = 1, 
    mPlugin = 2, 
    mGRID   = 3  
};

//---------------------------------------------------------------------------
// Settings to read locally several files, only for "mLocal" mode
// The different values are default, they can be set with environmental
// variables: INDIR, PATTERN, NFILES, respectivelly

char * kInDir   = "/user/data/files/";  
char * kPattern = ""; 
Int_t  kFile    = 2;  

//---------------------------------------------------------------------------
// Collection file for grid analysis

char * kXML = "collection.xml"; 

const Bool_t kMC = kFALSE; 
const TString kInputData = "ESD"; 
TString kTreeName = "esdTree";

//___________________________
//___________________________
void anaQA(Int_t mode=mLocal)
{
  // Main

  //--------------------------------------------------------------------
  // Load analysis libraries
  // Look at the method below, 
  // change whatever you need for your analysis case
  // ------------------------------------------------------------------
  LoadLibraries() ;
  
  //-------------------------------------------------------------------------------------------------
  // Create chain from ESD and from cross sections files, look below for options.
  //-------------------------------------------------------------------------------------------------
  if      (kInputData == "ESD") kTreeName = "esdTree" ;
  else if (kInputData == "AOD") kTreeName = "aodTree" ;
  else if (kInputData == "MC" ) kTreeName = "TE" ;
  else
  {
    cout<<"Wrong  data type "<<kInputData<<endl;
    break;
  }

  TChain *chain       = new TChain(kTreeName) ;
  CreateChain(mode, chain);  

  if(chain)
  {
    AliLog::SetGlobalLogLevel(AliLog::kError);//Minimum prints on screen
    
    //--------------------------------------
    // Make the analysis manager
    //-------------------------------------
    AliAnalysisManager *mgr  = new AliAnalysisManager("Manager", "Manager");
    // MC handler
    if((kMC || kInputData == "MC") && kInputData!="AOD"){
      AliMCEventHandler* mcHandler = new AliMCEventHandler();
      mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file
      mgr->SetMCtruthEventHandler(mcHandler);
      if( kInputData == "MC") mgr->SetInputEventHandler(NULL);
    }
    
    //input
    if(kInputData == "ESD")
    {
      // ESD handler
      AliESDInputHandler *esdHandler = new AliESDInputHandler();
      mgr->SetInputEventHandler(esdHandler);
      cout<<"ESD handler "<<mgr->GetInputEventHandler()<<endl;
    }
    if(kInputData == "AOD")
    {
      // AOD handler
      AliAODInputHandler *aodHandler = new AliAODInputHandler();
      mgr->SetInputEventHandler(aodHandler);
      cout<<"AOD handler "<<mgr->GetInputEventHandler()<<endl;
    }
    
     //mgr->SetDebugLevel(-1); // For debugging, do not uncomment if you want no messages.

    // AOD output handler, needed for physics selection
    cout<<"Init output handler"<<endl;
    AliAODHandler* aodoutHandler   = new AliAODHandler();
    aodoutHandler->SetOutputFileName("aod.root");
    mgr->SetOutputEventHandler(aodoutHandler);
    
    //-------------------------------------------------------------------------
    // Define task, put here any other task that you want to use.
    //-------------------------------------------------------------------------
    
    TString outputFile = AliAnalysisManager::GetCommonFileName(); 
    AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer();
    
    if(kInputData=="ESD" && !kMC)
    {
      gROOT->LoadMacro("$ALICE_PHYSICS/OADB/macros/AddTaskPhysicsSelection.C");
      AliPhysicsSelectionTask* physSelTask = AddTaskPhysicsSelection();
    }
    
    // Counting events tasks
    if(!kMC)
    {
      AliAnalysisTaskCounter * counterMB = new AliAnalysisTaskCounter("CounterMB");
      counterMB->SelectCollisionCandidates(AliVEvent::kMB);
      
      AliAnalysisDataContainer *coutputMB =
      mgr->CreateContainer("counterMB", TList::Class(), AliAnalysisManager::kOutputContainer, outputFile.Data());
      mgr->AddTask(counterMB);
      mgr->ConnectInput  (counterMB, 0, cinput1  );
      mgr->ConnectOutput (counterMB, 1, coutputMB);
      
      AliAnalysisTaskCounter * counterEMC = new AliAnalysisTaskCounter("CounterEMC");
      counterEMC->SelectCollisionCandidates(AliVEvent::kEMC7);
      
      AliAnalysisDataContainer *coutputEMC =
      mgr->CreateContainer("counterEMC", TList::Class(), AliAnalysisManager::kOutputContainer,  outputFile.Data());
      mgr->AddTask(counterEMC);
      mgr->ConnectInput  (counterEMC, 0, cinput1   );
      mgr->ConnectOutput (counterEMC, 1, coutputEMC);
      
      AliAnalysisTaskCounter * counterINT = new AliAnalysisTaskCounter("CounterINT");
      counterINT->SelectCollisionCandidates(AliVEvent::kINT7);
      
      AliAnalysisDataContainer *coutputINT =
      mgr->CreateContainer("counterINT7", TList::Class(), AliAnalysisManager::kOutputContainer,  outputFile.Data());
      mgr->AddTask(counterINT);
      mgr->ConnectInput  (counterINT, 0, cinput1   );
      mgr->ConnectOutput (counterINT, 1, coutputINT);
    }
    else
    {
      AliAnalysisDataContainer *coutput =
      mgr->CreateContainer("counter", TList::Class(), AliAnalysisManager::kOutputContainer,  outputFile.Data());
      mgr->AddTask(counter);
      mgr->ConnectInput  (counter, 0, cinput1);
      mgr->ConnectOutput (counter, 1, coutput);
    }
    
    // QA task
    
    gROOT->LoadMacro("$ALICE_PHYSICS/PWGGA/CaloTrackCorrelations/macros/QA/AddTaskCalorimeterQA.C");
    if(!kMC)
    {
      AliAnalysisTaskCaloTrackCorrelation *taskQAEMC = AddTaskCalorimeterQA("EMC",kMC,"",2012);
      taskQAEMC->SelectCollisionCandidates(AliVEvent::kEMC7);
      AliAnalysisTaskCaloTrackCorrelation *taskQAINT = AddTaskCalorimeterQA("default",kMC,"",2012);
      taskQAINT->SelectCollisionCandidates(AliVEvent::kINT7);
    }
    else
    {
      AliAnalysisTaskCaloTrackCorrelation *taskQA = AddTaskCalorimeterQA("default",kMC,"",2012);
    }
    
    //-----------------------
    // Run the analysis
    //-----------------------    
    TString smode = "";
    if (mode==mLocal || mode == mLocalCAF) 
      smode = "local";
    else if (mode==mPROOF) 
      smode = "proof";
    else if (mode==mGRID) 
      smode = "local";
    
    mgr->InitAnalysis();
    mgr->PrintStatus();
    mgr->StartAnalysis(smode.Data(),chain);

    cout <<" Analysis ended sucessfully "<< endl ;

  }
  else cout << "Chain was not produced ! "<<endl;
  
}

//_____________________________
//_____________________________
void  LoadLibraries()
{    
//    gSystem->Load("libPWGCaloTrackCorrBase");
//    gSystem->Load("libPWGGACaloTrackCorrelations");

//    SetupPar("PWGCaloTrackCorrBase");
//    SetupPar("PWGGACaloTrackCorrelations");
}

//_________________________________
//_________________________________
void SetupPar(char* pararchivename)
{
  TString cdir(Form("%s", gSystem->WorkingDirectory() )) ;
    
  TString parpar(Form("%s.par", pararchivename)) ;
    
  if ( gSystem->AccessPathName(parpar.Data()) )
  {
    gSystem->ChangeDirectory(gSystem->Getenv("ALICE_PHYSICS")) ;
    TString processline(Form(".! make %s", parpar.Data())) ; 
    gROOT->ProcessLine(processline.Data()) ;
    gSystem->ChangeDirectory(cdir) ; 
    processline = Form(".! mv $ALICE_PHYSICS/%s .", parpar.Data()) ;
    gROOT->ProcessLine(processline.Data()) ;
  }
    
  if ( gSystem->AccessPathName(pararchivename) )
  {
    TString processline = Form(".! tar xvzf %s",parpar.Data()) ;
    gROOT->ProcessLine(processline.Data());
  }
  
  TString ocwd = gSystem->WorkingDirectory();
  gSystem->ChangeDirectory(pararchivename);
  
  // check for BUILD.sh and execute
  if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh"))
  {
    printf("*******************************\n");
    printf("*** Building PAR archive    ***\n");
    cout<<pararchivename<<endl;
    printf("*******************************\n");
    
    if (gSystem->Exec("PROOF-INF/BUILD.sh"))
    {
      Error("runProcess","Cannot Build the PAR Archive! - Abort!");
      return -1;
    }
  }
  // check for SETUP.C and execute
  if (!gSystem->AccessPathName("PROOF-INF/SETUP.C"))
  {
    printf("*******************************\n");
    printf("*** Setup PAR archive       ***\n");
    cout<<pararchivename<<endl;
    printf("*******************************\n");
    gROOT->Macro("PROOF-INF/SETUP.C");
  }
  
  gSystem->ChangeDirectory(ocwd.Data());
  printf("Current dir: %s\n", ocwd.Data());
}

//_____________________________________________________________________
//_____________________________________________________________________
void CreateChain(const anaModes mode, TChain * chain)
{
  TString ocwd = gSystem->WorkingDirectory();
  
  //-----------------------------------------------------------
  // Analysis of CAF data locally and with PROOF
  //-----------------------------------------------------------
  if(mode ==mPROOF || mode ==mLocalCAF)
  {
    // Chain from CAF
    gROOT->LoadMacro("$ALICE_PHYSICS/PWG/EMCAL/CreateESDChain.C");
    // The second parameter is the number of input files in the chain
    chain = CreateESDChain("ESD12001.txt", 5);  
  }
  
  //---------------------------------------
  // Local files analysis
  //---------------------------------------
  else if(mode == mLocal)
  {
    //If you want to add several ESD files sitting in a common directory INDIR
    //Specify as environmental variables the directory (INDIR), the number of files 
    //to analyze (NFILES) and the pattern name of the directories with files (PATTERN)

    if(gSystem->Getenv("INDIR"))  
      kInDir = gSystem->Getenv("INDIR") ; 
    else cout<<"INDIR not set, use default: "<<kInDir<<endl;  
    
    if(gSystem->Getenv("PATTERN"))   
      kPattern = gSystem->Getenv("PATTERN") ; 
    else  cout<<"PATTERN not set, use default: "<<kPattern<<endl;
    
    if(gSystem->Getenv("NFILES"))
      kFile = atoi(gSystem->Getenv("NFILES")) ;
    else cout<<"NFILES not set, use default: "<<kFile<<endl;
    
    //Check if env variables are set and are correct
    if ( kInDir  && kFile) {
      printf("Get %d files from directory %s\n",kFile,kInDir);
      if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist
  printf("%s does not exist\n", kInDir) ;
  return ;
      }

      cout<<"INDIR   : "<<kInDir<<endl;
      cout<<"NFILES  : "<<kFile<<endl;
      cout<<"PATTERN : " <<kPattern<<endl;

      TString datafile="";
      if(kInputData == "ESD") datafile = "AliESDs.root" ;
      else if(kInputData == "AOD") datafile = "AliAOD.root" ;
      
      //Loop on ESD files, add them to chain
      Int_t event =0;
      Int_t skipped=0 ; 
      char file[120] ;
      
      for (event = 0 ; event < kFile ; event++) {
  sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ; 
  TFile * fESD = 0 ; 
  //Check if file exists and add it, if not skip it
  if ( fESD = TFile::Open(file)) {
    if ( fESD->Get(kTreeName) ) { 
      printf("++++ Adding %s\n", file) ;
      chain->AddFile(file);
    }
  }
  else { 
    printf("---- Skipping %s\n", file) ;
    skipped++ ;
  }
      }
      printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ;  
    }
    else {
      TString input = "AliESDs.root" ;
      cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl;
      chain->AddFile(input);
    }
    
  }// local files analysis
  
  //------------------------------
  //GRID xml files
  //-----------------------------
  else if(mode == mGRID){
    //Get colection file. It is specified by the environmental
    //variable XML

    if(gSystem->Getenv("XML") )
      kXML = gSystem->Getenv("XML");
    else
      sprintf(kXML, "collection.xml") ; 
    
    if (!TFile::Open(kXML)) {
      printf("No collection file with name -- %s -- was found\n",kXML);
      return ;
    }
    else cout<<"XML file "<<kXML<<endl;

    //Load necessary libraries and connect to the GRID
    gSystem->Load("libNetx") ; 
    gSystem->Load("libRAliEn"); 
    TGrid::Connect("alien://") ;

    //Feed Grid with collection file
    TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML);
    if (! collection) {
      AliError(Form("%s not found", kXML)) ; 
      return kFALSE ; 
    }
    TGridResult* result = collection->GetGridResult("",0 ,0);
   
    // Makes the ESD chain 
    printf("*** Getting the Chain       ***\n");
    for (Int_t index = 0; index < result->GetEntries(); index++) {
      TString alienURL = result->GetKey(index, "turl") ; 
      cout << "================== " << alienURL << endl ; 
      chain->Add(alienURL) ; 
    }
  }// xml analysis
  
  gSystem->ChangeDirectory(ocwd.Data());
}