publishDigitized.cc

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// gstreamer
#include "gstreamerCSVFactory.h"
#include "gstreamerConventions.h"
 
// Implementation summary:
// Flatten run-level digitized detector data into one CSV row per hit.
 
bool GstreamerCsvFactory::publishRunDigitizedDataImpl(const std::string&                        detectorName,
                                                      const std::vector<const GDigitizedData*>& digitizedData) {
    if (!ofile_digitized.is_open()) {
        log->error(ERR_CANTOPENOUTPUT, SFUNCTION_NAME, "Error: can't access ", filename_digitized());
    }
 
    // Emit the header row from the first non-empty collection so column names match
    // the detector schema observed in the data.
    if (!is_first_event_with_digidata) {
        if (digitizedData.size() > 0) {
            ofile_digitized << "evn, timestamp, thread_id, detector, ";
            auto first_hit = digitizedData[0];
 
            const auto& imap = first_hit->getIntObservablesMap(0);
            const auto& dmap = first_hit->getDblObservablesMap(0);
 
            size_t total = dmap.size();
            size_t i     = 0;
 
            log->debug(NORMAL, SFUNCTION_NAME, "Writing header for event ", event_number, " with ", total,
                       " variables");
 
            for (const auto& [name, value] : imap) { ofile_digitized << name << ", "; }
 
            for (const auto& [name, value] : dmap) {
                ofile_digitized << name;
                if (++i < total) ofile_digitized << ", ";
            }
 
            ofile_digitized << "\n";
 
            is_first_event_with_digidata = true;
        }
    }
 
    // Once the header exists, every hit becomes one flattened row.
    if (is_first_event_with_digidata) {
        for (auto digi_hit : digitizedData) {
            const auto& imap = digi_hit->getIntObservablesMap(0);
            const auto& dmap = digi_hit->getDblObservablesMap(0);
 
            size_t total = dmap.size();
            size_t i     = 0;
 
            ofile_digitized << event_number << ", " << timestamp << ", " << thread_id << ", " << detectorName << ", ";
 
            for (const auto& [variableName, value] : imap) { ofile_digitized << value << ", "; }
            for (const auto& [variableName, value] : dmap) {
                ofile_digitized << value;
                if (++i < total) ofile_digitized << ", ";
                else ofile_digitized << "\n";
            }
        }
    }
 
    return true;
}