AbstractFactory.hpp

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/* @file: AbstractFactory.hpp
 *
 * This is part of the DUNE DAQ Application Framework, copyright 2023.
 * Licensing/copyright details are in the COPYING file that you should have
 * received with this code.
 */
 
#ifndef TRIGGERALGS_ABSTRACT_FACTORY_HPP_
#define TRIGGERALGS_ABSTRACT_FACTORY_HPP_
 
#include "logging/Logging.hpp"
 
#include <functional>
#include <memory>
#include <string>
#include <unordered_map>
 
namespace triggeralgs {
 
template <typename T>
class AbstractFactory
{
  using maker_creator = std::function<std::unique_ptr<T>()>;
  using creation_map = std::unordered_map<std::string, maker_creator>;
 
  public:
    AbstractFactory() {}
    AbstractFactory(const AbstractFactory&) = delete;
    AbstractFactory& operator=(const AbstractFactory&) = delete;
    virtual ~AbstractFactory() {}
 
    std::unique_ptr<T> build_maker(const std::string& alg_name);
 
    static void register_creator(const std::string alg_name, maker_creator creator);
 
    static std::shared_ptr<AbstractFactory<T>> get_instance();
 
  protected:
    static std::shared_ptr<AbstractFactory<T>> s_single_factory;
 
  private:
    static creation_map& get_makers();
};
 
} /* namespace triggeralgs */
 
#include "triggeralgs/AbstractFactory.hxx"
 
#endif // TRIGGERALGS_ABSTRACT_FACTORY_HPP_