ClusterReaderSpec.cxx

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
 
#include <vector>
 
#include "TTree.h"
 
#include "Framework/ControlService.h"
#include "Framework/ConfigParamRegistry.h"
#include "Framework/Logger.h"
#include "ITS3Workflow/ClusterReaderSpec.h"
#include <cassert>
#include "CommonUtils/NameConf.h"
 
using namespace o2::framework;
using namespace o2::itsmft;
 
namespace o2
{
namespace its3
{
 
ClusterReader::ClusterReader(bool useMC, bool usePatterns)
{
  mUseMC = useMC;
  mUsePatterns = usePatterns;
}
 
void ClusterReader::init(InitContext& ic)
{
  mFileName = o2::utils::concat_string(o2::base::NameConf::rectifyDirectory(ic.options().get<std::string>("input-dir")),
                                       ic.options().get<std::string>((mDetNameLC + "-cluster-infile").c_str()));
  connectTree(mFileName);
}
 
void ClusterReader::run(ProcessingContext& pc)
{
  auto ent = mTree->GetReadEntry() + 1;
  assert(ent < mTree->GetEntries()); // this should not happen
  mTree->GetEntry(ent);
  LOG(info) << mDetNameReal << "ClusterReader pushes " << mClusROFRec.size() << " ROFRecords,"
            << mClusterCompArray.size() << " compact clusters at entry " << ent;
 
  // This is a very ugly way of providing DataDescription, which anyway does not need to contain detector name.
  // To be fixed once the names-definition class is ready
  pc.outputs().snapshot(Output{mOrigin, "CLUSTERSROF", 0}, mClusROFRec);
  pc.outputs().snapshot(Output{mOrigin, "COMPCLUSTERS", 0}, mClusterCompArray);
  if (mUsePatterns) {
    pc.outputs().snapshot(Output{mOrigin, "PATTERNS", 0}, mPatternsArray);
  }
  if (mUseMC) {
    pc.outputs().snapshot(Output{mOrigin, "CLUSTERSMCTR", 0}, mClusterMCTruth);
    pc.outputs().snapshot(Output{mOrigin, "CLUSTERSMC2ROF", 0}, mClusMC2ROFs);
  }
 
  if (mTree->GetReadEntry() + 1 >= mTree->GetEntries()) {
    pc.services().get<ControlService>().endOfStream();
    pc.services().get<ControlService>().readyToQuit(QuitRequest::Me);
  }
}
 
void ClusterReader::connectTree(const std::string& filename)
{
  mTree.reset(nullptr); // in case it was already loaded
  mFile.reset(TFile::Open(filename.c_str()));
  assert(mFile && !mFile->IsZombie());
  mTree.reset((TTree*)mFile->Get(mClusTreeName.c_str()));
  assert(mTree);
 
  mTree->SetBranchAddress((mDetName + mClusROFBranchName).c_str(), &mClusROFRecPtr);
  mTree->SetBranchAddress((mDetName + mClusterCompBranchName).c_str(), &mClusterCompArrayPtr);
  if (mUsePatterns) {
    mTree->SetBranchAddress((mDetName + mClusterPattBranchName).c_str(), &mPatternsArrayPtr);
  }
  if (mUseMC) {
    if (mTree->GetBranch((mDetName + mClustMCTruthBranchName).c_str()) &&
        mTree->GetBranch((mDetName + mClustMC2ROFBranchName).c_str())) {
      mTree->SetBranchAddress((mDetName + mClustMCTruthBranchName).c_str(), &mClusterMCTruthPtr);
      mTree->SetBranchAddress((mDetName + mClustMC2ROFBranchName).c_str(), &mClusMC2ROFsPtr);
    } else {
      LOG(info) << "MC-truth is missing";
      mUseMC = false;
    }
  }
  LOG(info) << "Loaded tree from " << filename << " with " << mTree->GetEntries() << " entries";
}
 
DataProcessorSpec getITS3ClusterReaderSpec(bool useMC, bool usePatterns)
{
  std::vector<OutputSpec> outputSpec;
  outputSpec.emplace_back("IT3", "CLUSTERSROF", 0, Lifetime::Timeframe);
  outputSpec.emplace_back("IT3", "COMPCLUSTERS", 0, Lifetime::Timeframe);
  if (usePatterns) {
    outputSpec.emplace_back("IT3", "PATTERNS", 0, Lifetime::Timeframe);
  }
  if (useMC) {
    outputSpec.emplace_back("IT3", "CLUSTERSMCTR", 0, Lifetime::Timeframe);
    outputSpec.emplace_back("IT3", "CLUSTERSMC2ROF", 0, Lifetime::Timeframe);
  }
 
  return DataProcessorSpec{
    "its3-cluster-reader",
    Inputs{},
    outputSpec,
    AlgorithmSpec{adaptFromTask<ClusterReader>(useMC, usePatterns)},
    Options{
      {"its-cluster-infile", VariantType::String, "o2clus_its.root", {"Name of the input cluster file"}},
      {"input-dir", VariantType::String, "none", {"Input directory"}}}};
}
 
} // namespace its3
} // namespace o2