detinfo::DetectorClocksServiceStandard Class Reference

art service managing detinfo::DetectorClocksStandard. More...

#include <DetectorClocksServiceStandard.h>

Inheritance diagram for detinfo::DetectorClocksServiceStandard:

Public Member Functions
	DetectorClocksServiceStandard (fhicl::ParameterSet const &pset, art::ActivityRegistry &reg)
Public Member Functions inherited from detinfo::DetectorClocksService
virtual	~DetectorClocksService ()=default

Private Member Functions
void	preBeginRun (art::Run const &run)
void	postOpenFile (std::string const &filename)
DetectorClocksData	DataForJob () const override
DetectorClocksData	DataFor (art::Event const &e) const override

Private Attributes
DetectorClocksStandard	fClocks
bool	fInheritClockConfig

Additional Inherited Members
Public Types inherited from detinfo::DetectorClocksService
using	provider_type = detinfo::DetectorClocks

Detailed Description

art service managing detinfo::DetectorClocksStandard.

See also

detinfo::DetectorClocksStandard, detinfo::DetectorClocks

This art service manages LArSoft's service provider detinfo::DetectorClocksStandard, which implements detinfo::DetectorClocks interface.

For information about functionality of the service, see the documentation of its interface, detinfo::DetectorClocks. For information of the configuration, see also detinfo::DetectorClocksStandard.

Configuration

The configuration parameters are documented in the service provider implementation: detinfo::DetectorClocksStandard.

Consistency check

This service manager honors the InheritClockConfig configuration option in the following way:

1. if the past jobs (explicitly excluding the current job) had inconsistent configuration, an exception is thrown claiming an "historical disagreement"
2. after the verification that the past configuration is consistent, the values from that configurations override the ones in the configuration of the current job; a value from the configuration of the current job is retained only if it was not present in the past (i.e. it is a new configuration parameter added since the input file was produced).

The "past jobs" are the jobs that have produced the input file, and whose configuration is stored by art in the input file itself. The check and reconfiguration is performed on each new input file.

Timing specifics

The trigger and beam gate times are set by this service before each event is processed. The logic is the following:

1. if the event contains a raw trigger (raw::Trigger) data product with input tag TriggerName() (from the configuration), that data product is read and the trigger and beam gate times stored in it are imported in the current service provider configuration; if there are more than one raw::Trigger objects in the data product, an exception is thrown
2. if no raw trigger is found with the specified label, the configuration of the service provider is updated using the default values of trigger and beam times specified in the service configuration

The first set up happens on opening the first run in the first input file. Accessing this service before (e.g. during beginJob() phase) yields undefined behaviour.

Definition at line 84 of file DetectorClocksServiceStandard.h.

Constructor & Destructor Documentation

detinfo::DetectorClocksServiceStandard::DetectorClocksServiceStandard	(	fhicl::ParameterSet const &	pset,
		art::ActivityRegistry &	reg
	)

Definition at line 34 of file DetectorClocksServiceStandard_service.cc.

    : fClocks{pset}, fInheritClockConfig{pset.get<bool>("InheritClockConfig")}
  {
    reg.sPostOpenFile.watch(this, &DetectorClocksServiceStandard::postOpenFile);
    reg.sPreBeginRun.watch(this, &DetectorClocksServiceStandard::preBeginRun);
  }

Member Function Documentation

DetectorClocksData detinfo::DetectorClocksServiceStandard::DataFor ( art::Event const &  e ) const

overrideprivatevirtual

Implements detinfo::DetectorClocksService.

Definition at line 128 of file DetectorClocksServiceStandard_service.cc.

    { return detinfo::detectorClocksStandardDataFor(fClocks, e); }

DetectorClocksData detinfo::DetectorClocksServiceStandard::DataForJob ( ) const

inlineoverrideprivatevirtual

Implements detinfo::DetectorClocksService.

Definition at line 93 of file DetectorClocksServiceStandard.h.

    {
      return fClocks.DataForJob();
    }

void detinfo::DetectorClocksServiceStandard::postOpenFile ( std::string const &  filename )

private

Definition at line 50 of file DetectorClocksServiceStandard_service.cc.

  {
    if (!fInheritClockConfig) { return; }
    if (filename.empty()) { return; }
    std::unique_ptr<TFile> file{TFile::Open(filename.c_str(), "READ")};
    if (!file || file->IsZombie() || !file->IsOpen()) { return; }
    std::unique_ptr<TTree> metaDataTree{
      file->Get<TTree>(art::rootNames::metaDataTreeName().c_str())};
    if (metaDataTree == nullptr) {
      throw cet::exception("DetectorClocksServiceStandard",
                           "Input file does not contain a metadata tree!");
    }
    auto const fileFormatVersion =
      art::detail::readMetadata<art::FileFormatVersion>(metaDataTree.get());
    fhicl::ParameterSet ps;
    vector<string> const cfgName(fClocks.ConfigNames());
    vector<double> const cfgValue(fClocks.ConfigValues());
    bitset<kConfigTypeMax> config_set;
    vector<double> config_value(kConfigTypeMax, 0);

    auto count_configuration_changes =
      [&cfgName, &config_set, &config_value](fhicl::ParameterSet const& ps) {
        for (size_t i = 0; i < kConfigTypeMax; ++i) {
          auto const value_from_file = ps.get<double>(cfgName[i]);
          if (not config_set[i]) {
            config_value[i] = value_from_file;
            config_set[i] = true;
          }
          else if (config_value[i] != value_from_file) {
            throw cet::exception("DetectorClocksServiceStandard")
              << "Found historical value disagreement for " << cfgName[i] << " ... "
              << config_value[i] << " != " << value_from_file;
          }
        }
      };

    if (fileFormatVersion.value_ < 5) {
      art::ParameterSetMap psetMap;
      if (!art::detail::readMetadata(metaDataTree.get(), psetMap)) {
        throw cet::exception("DetectorClocksServiceStandard",
                             "Could not read ParameterSetMap from metadata tree!");
      }

      for (auto const& psEntry : psetMap) {
        fhicl::ParameterSet ps;
        ps = fhicl::ParameterSet::make(psEntry.second.pset_);
        if (!fClocks.IsRightConfig(ps)) { continue; }

        count_configuration_changes(ps);
      }
    }
    else {
      art::SQLite3Wrapper sqliteDB(file.get(), "RootFileDB");
      sqlite3_stmt* stmt{nullptr};
      sqlite3_prepare_v2(sqliteDB, "SELECT PSetBlob from ParameterSets;", -1, &stmt, nullptr);
      while (sqlite3_step(stmt) == SQLITE_ROW) {
        fhicl::ParameterSet ps;
        ps = fhicl::ParameterSet::make(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0)));
        if (!fClocks.IsRightConfig(ps)) { continue; }

        count_configuration_changes(ps);
      }
      sqlite3_finalize(stmt);
    }

    for (size_t i = 0; i < kConfigTypeMax; ++i) {
      if (not config_set[i]) continue;
      if (cfgValue[i] == config_value[i]) continue;

      cout << "Overriding configuration parameter " << cfgName[i] << " ... " << cfgValue[i]
           << " (fcl) => " << config_value[i] << " (data file)" << endl;
      fClocks.SetConfigValue(i, config_value[i]);
    }
    fClocks.ApplyParams();
  } // DetectorClocksServiceStandard::postOpenFile()

void detinfo::DetectorClocksServiceStandard::preBeginRun ( art::Run const &  run )

private

Definition at line 43 of file DetectorClocksServiceStandard_service.cc.

  {
    // This callback probably is not necessary.
    fClocks.ApplyParams();
  }

Member Data Documentation

DetectorClocksStandard detinfo::DetectorClocksServiceStandard::fClocks

private

Definition at line 101 of file DetectorClocksServiceStandard.h.

bool detinfo::DetectorClocksServiceStandard::fInheritClockConfig

private

Definition at line 102 of file DetectorClocksServiceStandard.h.

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The documentation for this class was generated from the following files:

• lardata/lardata/DetectorInfoServices/DetectorClocksServiceStandard.h
• lardata/lardata/DetectorInfoServices/DetectorClocksServiceStandard_service.cc