kernel.hpp

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/*
    Copyright (C) 2014-2016 Leosac
 
    This file is part of Leosac.
 
    Leosac is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    Leosac is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Affero General Public License for more details.
 
    You should have received a copy of the GNU Affero General Public License
    along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
 
#pragma once
 
#include "CoreUtils.hpp"
#include "MessageBus.hpp"
#include "RemoteControl.hpp"
#include "Scheduler.hpp"
#include "core/config/ConfigChecker.hpp"
#include "core/config/ConfigManager.hpp"
#include "core/netconfig/networkconfig.hpp"
#include "module_manager.hpp"
#include "tools/ToolsFwd.hpp"
#include "tools/XmlNodeNameEnforcer.hpp"
#include "tools/db/db_fwd.hpp"
#include "tools/runtimeoptions.hpp"
#include "tools/service/ServiceFwd.hpp"
#include "tools/service/ServiceFwd.hpp"
#include <boost/property_tree/ptree.hpp>
#include <zmqpp/context.hpp>
 
namespace Leosac
{
class Kernel
{
  public:
    explicit Kernel(const boost::property_tree::ptree &config,
                    bool strict_mode = false);
 
    Kernel(const Kernel &) = delete;
 
    Kernel &operator=(const Kernel &) = delete;
 
    Kernel &operator=(Kernel &&) = delete;
 
    Kernel(Kernel &&) = delete;
 
    ~Kernel();
 
    static boost::property_tree::ptree
    make_config(const Leosac::Tools::RuntimeOptions &opt);
 
    bool run();
 
    std::string script_directory() const;
 
    std::string factory_config_directory() const;
 
    const ModuleManager &module_manager() const;
 
    ModuleManager &module_manager();
 
    zmqpp::context &zmqpp_context();
 
    CoreUtilsPtr core_utils();
 
    ConfigManager &config_manager();
 
    bool save_config();
 
    void restart_later();
 
    const std::chrono::steady_clock::time_point start_time() const;
 
    DBPtr database();
 
    ServiceRegistry &service_registry();
 
  private:
    void module_manager_init();
 
    void handle_control_request();
 
    void factory_reset();
 
    void get_netconfig();
 
    void set_netconfig(zmqpp::message *msg);
 
    void extract_environ();
 
    void configure_database();
 
    void populate_default_db();
 
    void create_update_schema();
 
    void connect_to_db(const boost::property_tree::ptree &db_cfg_node);
 
    void configure_logger();
 
    void configure_signal_handler();
 
    void register_core_services();
 
    void unregister_core_services();
 
    void shutdown();
 
    std::string config_file_path() const;
 
    CoreUtilsPtr utils_;
 
    ConfigManager config_manager_;
 
    zmqpp::context ctx_;
 
    MessageBus bus_;
 
    zmqpp::socket control_;
 
    zmqpp::socket bus_push_;
 
    zmqpp::reactor reactor_;
 
    bool is_running_;
 
    bool want_restart_;
 
    ModuleManager module_manager_;
 
    std::unique_ptr<NetworkConfig> network_config_;
 
    std::unique_ptr<RemoteControl> remote_controller_;
 
    enum class EnvironVar
    {
        FACTORY_CONFIG_DIR,
        SCRIPTS_DIR,
    };
 
    std::map<EnvironVar, std::string> environ_;
 
    bool send_sighup_;
 
    bool autosave_;
 
    const std::chrono::steady_clock::time_point start_time_;
 
    DBPtr database_;
 
    Tools::XmlNodeNameEnforcer xmlnne_;
 
    ServiceRegistryUPtr service_registry_;
 
    static Kernel *instance_;
    friend ServiceRegistry &get_service_registry();
};
}