DetPedestalRetrievalAlg.cxx

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#ifndef WEBDB_DETPEDESTALRETRIEVALALG_CXX
#define WEBDB_DETPEDESTALRETRIEVALALG_CXX

#include "DetPedestalRetrievalAlg.h"
#include "WebError.h"
#include "larevt/CalibrationDBI/IOVData/IOVDataConstants.h"

// art/LArSoft libraries
#include "art/Framework/Services/Registry/ServiceHandle.h" 
#include "larcore/Geometry/Geometry.h"
#include "cetlib_except/exception.h"
#include "messagefacility/MessageLogger/MessageLogger.h"

//C/C++
#include <fstream>

namespace lariov {

  //constructors
  DetPedestalRetrievalAlg::DetPedestalRetrievalAlg(const std::string& foldername, 
                                                   const std::string& url, 
                                                   const std::string& tag /*=""*/) : 
    DatabaseRetrievalAlg(foldername, url, tag),
    fEventTimeStamp(0),
    fCurrentTimeStamp(0),
    fDataSource(DataSource::Database) {
    
    fData.Clear();
    IOVTimeStamp tmp = IOVTimeStamp::MaxTimeStamp();
    tmp.SetStamp(tmp.Stamp()-1, tmp.SubStamp());
    fData.SetIoV(tmp, IOVTimeStamp::MaxTimeStamp());
  }
        
      
  DetPedestalRetrievalAlg::DetPedestalRetrievalAlg(fhicl::ParameterSet const& p) :
    DatabaseRetrievalAlg(p.get<fhicl::ParameterSet>("DatabaseRetrievalAlg")) {  
    
    this->Reconfigure(p);
  }
      
  void DetPedestalRetrievalAlg::Reconfigure(fhicl::ParameterSet const& p) {
    
    this->DatabaseRetrievalAlg::Reconfigure(p.get<fhicl::ParameterSet>("DatabaseRetrievalAlg"));
    fData.Clear();
    IOVTimeStamp tmp = IOVTimeStamp::MaxTimeStamp();
    tmp.SetStamp(tmp.Stamp()-1, tmp.SubStamp());
    fData.SetIoV(tmp, IOVTimeStamp::MaxTimeStamp());

    bool UseDB      = p.get<bool>("UseDB", false);
    bool UseFile   = p.get<bool>("UseFile", false);
    std::string fileName = p.get<std::string>("FileName", "");

    //priority:  (1) use db, (2) use table, (3) use defaults
    //If none are specified, use defaults
    if ( UseDB )      fDataSource = DataSource::Database;
    else if (UseFile) fDataSource = DataSource::File;
    else              fDataSource = DataSource::Default;

    if (fDataSource == DataSource::Default) {
      std::cout << "Using default pedestal values\n";
      float default_collmean     = p.get<float>("DefaultCollMean", 400.0);
      float default_collrms      = p.get<float>("DefaultCollRms", 0.3);
      float default_mean_err     = p.get<float>("DefaultMeanErr", 0.0);
      float default_rms_err      = p.get<float>("DefaultRmsErr", 0.0);
      float default_indmean      = p.get<float>("DefaultIndMean", 2048.0);
      float default_indrms       = p.get<float>("DefaultIndRms", 0.3);
      
      DetPedestal DefaultColl(0);
      DetPedestal DefaultInd(0);
      
      DefaultColl.SetPedMean(default_collmean);
      DefaultColl.SetPedMeanErr(default_mean_err);
      DefaultColl.SetPedRms(default_collrms);
      DefaultColl.SetPedRmsErr(default_rms_err);
      
      DefaultInd.SetPedMean(default_indmean);
      DefaultInd.SetPedMeanErr(default_mean_err);
      DefaultInd.SetPedRms(default_indrms);
      DefaultInd.SetPedRmsErr(default_rms_err);
      
      art::ServiceHandle<geo::Geometry> geo;
      geo::wire_id_iterator itW = geo->begin_wire_id();
      for ( ; itW != geo->end_wire_id(); ++itW) {
        DBChannelID_t ch = geo->PlaneWireToChannel(*itW);
      
        if (geo->SignalType(ch) == geo::kCollection) {
          DefaultColl.SetChannel(ch);
          fData.AddOrReplaceRow(DefaultColl);
        }
        else if (geo->SignalType(ch) == geo::kInduction) {
          DefaultInd.SetChannel(ch);
          fData.AddOrReplaceRow(DefaultInd);
        }
        else throw IOVDataError("Wire type is not collection or induction!");
      }
    }
    else if (fDataSource == DataSource::File) {
      cet::search_path sp("FW_SEARCH_PATH");
      std::string abs_fp = sp.find_file(fileName);
      std::cout << "Using pedestals from local file: "<<abs_fp<<"\n";
      std::ifstream file(abs_fp);
      if (!file) {
        throw cet::exception("DetPedestalRetrievalAlg")
          << "File "<<abs_fp<<" is not found.";
      }
      
      std::string line;
      DetPedestal dp(0);
      while (std::getline(file, line)) {
        size_t current_comma = line.find(',');
        DBChannelID_t ch = (DBChannelID_t)std::stoi(line.substr(0, current_comma));     
        float ped     = std::stof( line.substr(current_comma+1, line.find(',',current_comma+1)-(current_comma+1)) );
        
        current_comma = line.find(',',current_comma+1);
        float rms     = std::stof( line.substr(current_comma+1, line.find(',',current_comma+1)-(current_comma+1)) );
        
        current_comma = line.find(',',current_comma+1);
        float ped_err = std::stof( line.substr(current_comma+1, line.find(',',current_comma+1)-(current_comma+1)) );
        
        current_comma = line.find(',',current_comma+1);
        float rms_err = std::stof( line.substr(current_comma+1) );

        dp.SetChannel(ch);
        dp.SetPedMean(ped);
        dp.SetPedMeanErr(ped_err);
        dp.SetPedRms(rms);
        dp.SetPedRmsErr(rms_err);
        fData.AddOrReplaceRow(dp);
      }
    } // if source from file
    else { 
      std::cout << "Using pedestals from conditions database\n";
    }
  }


  // This method saves the time stamp of the latest event.

  void DetPedestalRetrievalAlg::UpdateTimeStamp(DBTimeStamp_t ts) {
    mf::LogInfo("DetPedestalRetrievalAlg") << "DetPedestalRetrievalAlg::UpdateTimeStamp called.";
    fEventTimeStamp = ts;
  }

  // Maybe update method cached data (public non-const version).

  bool DetPedestalRetrievalAlg::Update(DBTimeStamp_t ts) {
    
    fEventTimeStamp = ts;
    return DBUpdate(ts);
  }

  // Maybe update method cached data (private const version using current event time).

  bool DetPedestalRetrievalAlg::DBUpdate() const {
    return DBUpdate(fEventTimeStamp);
  }

  // Maybe update method cached data (private const version).
  // This is the function that does the actual work of updating data from database.

  bool DetPedestalRetrievalAlg::DBUpdate(DBTimeStamp_t ts) const {

    bool result = false;
    if(fDataSource == DataSource::Database && ts != fCurrentTimeStamp) {
      
      mf::LogInfo("DetPedestalRetrievalAlg") << "DetPedestalRetrievalAlg::DBUpdate called with new timestamp.";
      fCurrentTimeStamp = ts;     

      // Call non-const base class method.

      result = const_cast<DetPedestalRetrievalAlg*>(this)->UpdateFolder(ts);
      if(result) {

        //DBFolder was updated, so now update the Snapshot
        fData.Clear();
        fData.SetIoV(this->Begin(), this->End());

        std::vector<DBChannelID_t> channels;
        fFolder->GetChannelList(channels);
        for (auto it = channels.begin(); it != channels.end(); ++it) {

          double mean, mean_err, rms, rms_err;
          fFolder->GetNamedChannelData(*it, "mean",     mean);
          fFolder->GetNamedChannelData(*it, "mean_err", mean_err);
          fFolder->GetNamedChannelData(*it, "rms",      rms);
          fFolder->GetNamedChannelData(*it, "rms_err",  rms_err);

          DetPedestal pd(*it);
          pd.SetPedMean( (float)mean );
          pd.SetPedMeanErr( (float)mean_err );
          pd.SetPedRms( (float)rms );
          pd.SetPedRmsErr( (float)rms_err );

          fData.AddOrReplaceRow(pd);
        }
      }
    }

    return result;

  }
  
  const DetPedestal& DetPedestalRetrievalAlg::Pedestal(DBChannelID_t ch) const {
    DBUpdate();
    return fData.GetRow(ch);
  }
      
  float DetPedestalRetrievalAlg::PedMean(DBChannelID_t ch) const {
    return this->Pedestal(ch).PedMean();
  }
  
  float DetPedestalRetrievalAlg::PedRms(DBChannelID_t ch) const {
    return this->Pedestal(ch).PedRms();
  }
  
  float DetPedestalRetrievalAlg::PedMeanErr(DBChannelID_t ch) const {
    return this->Pedestal(ch).PedMeanErr();
  }
  
  float DetPedestalRetrievalAlg::PedRmsErr(DBChannelID_t ch) const {
    return this->Pedestal(ch).PedRmsErr();
  }



}//end namespace lariov
        
#endif