ConfigurationFileLoader.h

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#pragma once
#include "PeersConfiguration.h"
#include "catapult/utils/ConfigurationBag.h"
#include <boost/filesystem.hpp>
#include <iostream>
 
namespace catapult { namespace config {
 
    template<
            typename TConfigurationLoader,
            typename TConfiguration = std::invoke_result_t<TConfigurationLoader, const std::string&>
    >
    TConfiguration LoadConfiguration(const boost::filesystem::path& path, TConfigurationLoader loader) {
        if (!boost::filesystem::exists(path)) {
            auto message = "aborting load due to missing configuration file";
            CATAPULT_LOG(fatal) << message << ": " << path;
            CATAPULT_THROW_EXCEPTION(catapult_runtime_error(message));
        }
 
        std::cout << "loading configuration from " << path << std::endl;
        return loader(path.generic_string());
    }
 
    template<typename TConfiguration>
    TConfiguration LoadIniConfiguration(const boost::filesystem::path& path) {
        return LoadConfiguration(path, [](const auto& filePath) {
            return TConfiguration::LoadFromBag(utils::ConfigurationBag::FromPath(filePath));
        });
    }
 
    inline std::vector<ionet::Node> LoadPeersConfiguration(
            const boost::filesystem::path& path,
            model::NetworkIdentifier networkIdentifier) {
        return LoadConfiguration(path, [networkIdentifier](const auto& filePath) {
            return LoadPeersFromPath(filePath, networkIdentifier);
        });
    }
}}