/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/HLTrigger/HLTcore/plugins/HLTEventAnalyzerAOD.cc

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#include "FWCore/Common/interface/TriggerNames.h"
#include "FWCore/Common/interface/TriggerResultsByName.h"
#include "HLTrigger/HLTcore/interface/HLTEventAnalyzerAOD.h"
#include <cassert>

//
// constructors and destructor
//
HLTEventAnalyzerAOD::HLTEventAnalyzerAOD(const edm::ParameterSet& ps) : 
  processName_(ps.getParameter<std::string>("processName")),
  triggerName_(ps.getParameter<std::string>("triggerName")),
  triggerResultsTag_(ps.getParameter<edm::InputTag>("triggerResults")),
  triggerEventTag_(ps.getParameter<edm::InputTag>("triggerEvent"))
{
  using namespace std;
  using namespace edm;

  cout << "HLTEventAnalyzerAOD configuration: " << endl
       << "   ProcessName = " << processName_ << endl
       << "   TriggerName = " << triggerName_ << endl
       << "   TriggerResultsTag = " << triggerResultsTag_.encode() << endl
       << "   TriggerEventTag = " << triggerEventTag_.encode() << endl;

}

HLTEventAnalyzerAOD::~HLTEventAnalyzerAOD()
{
}

//
// member functions
//
void
HLTEventAnalyzerAOD::beginRun(edm::Run const & iRun, edm::EventSetup const& iSetup)
{
  using namespace std;
  using namespace edm;

  bool changed(true);
  if (hltConfig_.init(iRun,iSetup,processName_,changed)) {
    if (changed) {
      // check if trigger name in (new) config
      if (triggerName_!="@") { // "@" means: analyze all triggers in config
        const unsigned int n(hltConfig_.size());
        const unsigned int triggerIndex(hltConfig_.triggerIndex(triggerName_));
        if (triggerIndex>=n) {
          cout << "HLTEventAnalyzerAOD::analyze:"
               << " TriggerName " << triggerName_ 
               << " not available in (new) config!" << endl;
          cout << "Available TriggerNames are: " << endl;
          hltConfig_.dump("Triggers");
        }
      }
      hltConfig_.dump("ProcessName");
      hltConfig_.dump("GlobalTag");
      hltConfig_.dump("TableName");
      hltConfig_.dump("Streams");
      hltConfig_.dump("Datasets");
      hltConfig_.dump("PrescaleTable");
      hltConfig_.dump("ProcessPSet");
    }
  } else {
    cout << "HLTEventAnalyzerAOD::analyze:"
         << " config extraction failure with process name "
         << processName_ << endl;
  }
}

// ------------ method called to produce the data  ------------
void
HLTEventAnalyzerAOD::analyze(const edm::Event& iEvent, const edm::EventSetup& iSetup)
{
  using namespace std;
  using namespace edm;
  
  cout << endl;

  // get event products
  iEvent.getByLabel(triggerResultsTag_,triggerResultsHandle_);
  if (!triggerResultsHandle_.isValid()) {
    cout << "HLTEventAnalyzerAOD::analyze: Error in getting TriggerResults product from Event!" << endl;
    return;
  }
  iEvent.getByLabel(triggerEventTag_,triggerEventHandle_);
  if (!triggerEventHandle_.isValid()) {
    cout << "HLTEventAnalyzerAOD::analyze: Error in getting TriggerEvent product from Event!" << endl;
    return;
  }
  // sanity check
  assert(triggerResultsHandle_->size()==hltConfig_.size());
  
  // analyze this event for the triggers requested
  if (triggerName_=="@") {
    const unsigned int n(hltConfig_.size());
    for (unsigned int i=0; i!=n; ++i) {
      analyzeTrigger(iEvent,iSetup,hltConfig_.triggerName(i));
    }
  } else {
    analyzeTrigger(iEvent,iSetup,triggerName_);
  }

  return;

}

void HLTEventAnalyzerAOD::analyzeTrigger(const edm::Event& iEvent, const edm::EventSetup& iSetup, const std::string& triggerName) {
  
  using namespace std;
  using namespace edm;
  using namespace reco;
  using namespace trigger;

  cout << endl;

  const unsigned int n(hltConfig_.size());
  const unsigned int triggerIndex(hltConfig_.triggerIndex(triggerName));
  assert(triggerIndex==iEvent.triggerNames(*triggerResultsHandle_).triggerIndex(triggerName));

  // abort on invalid trigger name
  if (triggerIndex>=n) {
    cout << "HLTEventAnalyzerAOD::analyzeTrigger: path "
         << triggerName << " - not found!" << endl;
    return;
  }
  
  const std::pair<int,int> prescales(hltConfig_.prescaleValues(iEvent,iSetup,triggerName));
  cout << "HLTEventAnalyzerAOD::analyzeTrigger: path "
       << triggerName << " [" << triggerIndex << "] "
       << "prescales L1T,HLT: " << prescales.first << "," << prescales.second
       << endl;

  // modules on this trigger path
  const unsigned int m(hltConfig_.size(triggerIndex));
  const vector<string>& moduleLabels(hltConfig_.moduleLabels(triggerIndex));

  // Results from TriggerResults product
  cout << " Trigger path status:"
       << " WasRun=" << triggerResultsHandle_->wasrun(triggerIndex)
       << " Accept=" << triggerResultsHandle_->accept(triggerIndex)
       << " Error =" << triggerResultsHandle_->error(triggerIndex)
       << endl;
  const unsigned int moduleIndex(triggerResultsHandle_->index(triggerIndex));
  cout << " Last active module - label/type: "
       << moduleLabels[moduleIndex] << "/" << hltConfig_.moduleType(moduleLabels[moduleIndex])
       << " [" << moduleIndex << " out of 0-" << (m-1) << " on this path]"
       << endl;
  assert (moduleIndex<m);

  // Results from TriggerEvent product - Attention: must look only for
  // modules actually run in this path for this event!
  for (unsigned int j=0; j<=moduleIndex; ++j) {
    const string& moduleLabel(moduleLabels[j]);
    const string  moduleType(hltConfig_.moduleType(moduleLabel));
    // check whether the module is packed up in TriggerEvent product
    const unsigned int filterIndex(triggerEventHandle_->filterIndex(InputTag(moduleLabel,"",processName_)));
    if (filterIndex<triggerEventHandle_->sizeFilters()) {
      cout << " 'L3' filter in slot " << j << " - label/type " << moduleLabel << "/" << moduleType << endl;
      const Vids& VIDS (triggerEventHandle_->filterIds(filterIndex));
      const Keys& KEYS(triggerEventHandle_->filterKeys(filterIndex));
      const size_type nI(VIDS.size());
      const size_type nK(KEYS.size());
      assert(nI==nK);
      const size_type n(max(nI,nK));
      cout << "   " << n  << " accepted 'L3' objects found: " << endl;
      const TriggerObjectCollection& TOC(triggerEventHandle_->getObjects());
      for (size_type i=0; i!=n; ++i) {
        const TriggerObject& TO(TOC[KEYS[i]]);
        cout << "   " << i << " " << VIDS[i] << "/" << KEYS[i] << ": "
             << TO.id() << " " << TO.pt() << " " << TO.eta() << " " << TO.phi() << " " << TO.mass()
             << endl;
      }
    }
  }

   return;
}