geometry/dd4hep/DD4hep_service.h

0001 // SPDX-License-Identifier: LGPL-3.0-or-later
0002 // Copyright (C) 2022, 2023 Whitney Armstrong, Wouter Deconinck, David Lawrence
0003 //
0004
0005 #pragma once
0006
0007 #include <DD4hep/Detector.h>
0008 #include <DDRec/CellIDPositionConverter.h>
0009 #include <JANA/JApplication.h>
0010 #include <JANA/Services/JServiceLocator.h>
0011 #include <gsl/pointers>
0012 #include <spdlog/logger.h>
0013 #include <memory>
0014 #include <mutex>
0015 #include <string>
0016 #include <vector>
0017
0018 class DD4hep_service : public JService
0019 {
0020 public:
0021     DD4hep_service( JApplication *app ) : m_app(app) {}
0022     virtual ~DD4hep_service();
0023
0024     virtual gsl::not_null<const dd4hep::Detector*> detector();
0025     virtual gsl::not_null<const dd4hep::rec::CellIDPositionConverter*> converter();
0026
0027 protected:
0028     void Initialize();
0029
0030 private:
0031     DD4hep_service() = default;
0032     void acquire_services(JServiceLocator *) override;
0033
0034     std::once_flag init_flag;
0035     JApplication *m_app = nullptr;
0036     std::unique_ptr<const dd4hep::Detector> m_dd4hepGeo = nullptr;
0037     std::unique_ptr<const dd4hep::rec::CellIDPositionConverter> m_cellid_converter = nullptr;
0038     std::vector<std::string> m_xml_files;
0039
0040     /// Ensures there is a geometry file that should be opened
0041     std::string resolveFileName(const std::string &filename, char *detector_path_env);
0042
0043     std::shared_ptr<spdlog::logger> m_log;
0044 };