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/**
* @file interface.hpp
* @author Felix Morgner (felix.morgner@gmail.com)
* @since 1.0.0
*/
#ifndef WANDA_CONTROL_INTERFACE_HPP
#define WANDA_CONTROL_INTERFACE_HPP
#include "wanda/control/connection.hpp"
#include "wanda/meta/keyed.hpp"
#include "wanda/proto/command.hpp"
#include <boost/asio/local/stream_protocol.hpp>
#include <boost/asio/io_context.hpp>
#include <spdlog/spdlog.h>
#include <cstddef>
#include <filesystem>
#include <istream>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <type_traits>
namespace wanda::control
{
/**
* @brief An RAII type to delete a socket file upon destruction
*/
struct socket_deleter
{
~socket_deleter();
std::filesystem::path path;
};
/**
* @brief The daemon control interface
*/
struct interface : connection::listener, meta::keyed<interface>, std::enable_shared_from_this<interface>
{
using protocol = boost::asio::local::stream_protocol;
using pointer = std::shared_ptr<interface>;
/**
* @brief The interface to be implemented by the control interface listener
*/
struct listener
{
virtual void on_received(interface & interface, proto::command command){};
};
/**
* @internal
* @brief Construct a new control interface object
*
* @note This constructor is keyed on a private key type so it can only be constructed using the #wanda::make_interface factory
*/
interface(key, boost::asio::io_context & service, protocol::endpoint endpoint, listener & listener);
/**
* @brief Start handling of controller connections
*/
std::error_code start();
/**
* @brief Stop the control interface
*/
std::error_code shutdown();
void on_close(connection::pointer connection) override;
void on_received(connection::pointer connection, proto::message message) override;
private:
void perform_accept();
friend pointer make_interface(boost::asio::io_context & service, std::filesystem::path file, interface::listener & listener);
boost::asio::io_context & m_service;
protocol::endpoint m_endpoint;
protocol::socket m_socket;
protocol::acceptor m_acceptor;
listener & m_listener;
socket_deleter m_deleter{m_endpoint.path()};
std::set<connection::pointer> m_connections;
};
/**
* @brief A factory to create new #interface instances
*/
interface::pointer make_interface(boost::asio::io_context & service, std::filesystem::path socket, interface::listener & listener);
} // namespace wanda::control
#endif
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