ConnectSocketMgr.hpp

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/***************************************************
 *       _   _            _                        *
 *      | | | |          (_)                       *
 *      | |_| | ___  _ __ _ _______  _ __          *
 *      |  _  |/ _ \| '__| |_  / _ \| '_  \        *
 *      | | | | (_) | |  | |/ / (_) | | | |        *
 *      \_| |_/\___/|_|  |_/___\___/|_| |_|        *
 ***************************************************
 * This file is part of Horizon (c).
 *
 * Copyright (c) 2019 Sagun K. (sagunxp@gmail.com).
 * Copyright (c) 2019 Horizon Dev Team.
 *
 * Base Author - Sagun K. (sagunxp@gmail.com)
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 * This library 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 **************************************************/
 
#ifndef HORIZON_NETWORKING_CONNECTSOCKETMGR_HPP
#define HORIZON_NETWORKING_CONNECTSOCKETMGR_HPP
 
#include "Libraries/Networking/SocketMgr.hpp"
 
namespace Horizon
{
namespace Networking
{
class Connector;
template <class SocketType, class NetworkThreadType>
class ConnectSocketMgr : public SocketMgr<SocketType, NetworkThreadType>
{
    typedef std::map<std::string, std::shared_ptr<SocketType>> ConnectionMap;
    typedef SocketMgr<SocketType, NetworkThreadType> BaseSocketMgr;
public:
    virtual std::shared_ptr<Connector> start(std::string const &connection_name, Server *server, std::string const &connect_ip, uint16_t port, uint32_t connections = 1, bool minimal = false)
    {
        std::shared_ptr<Connector> connector;
 
        if (!(connector = std::make_shared<Horizon::Networking::Connector>(connection_name, server, connect_ip, port))) {
            HLog(error) << "ConnectSocketMgr::Start: " << connection_name << " failed to connect to tcp::" << connect_ip << "@" << port;
            return nullptr;
        }
 
        if (!BaseSocketMgr::StartNetworkThreads(1)) {
            HLog(error) << "ConnectSocketMgr::Start failed to start network threads.";
            return nullptr;
        }
 
        // Set the socket factory. & Start attempting to connect.
        connector->set_socket_factory(std::bind(&BaseSocketMgr::get_new_socket, this));
        
        if (minimal == false)
            connector->connect_with_callback(
                        std::bind(&ConnectSocketMgr<SocketType, NetworkThreadType>::on_socket_open,
                            this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), connections);
 
        return connector;
    }
 
    virtual bool stop_network() override
    {
        if (!SocketMgr<SocketType, NetworkThreadType>::stop_network())
            return false;
 
        return true;
    }
 
    void on_socket_open(std::string const &conn_name, std::shared_ptr<tcp::socket> const &tcp_socket, uint32_t thread_index)
    {
        std::shared_ptr<SocketType> socket = SocketMgr<SocketType, NetworkThreadType>::on_socket_open(std::move(tcp_socket), thread_index);
        add_socket_to_connections(conn_name, socket);
    }
 
    void add_socket_to_connections(std::string const &conn_name, std::shared_ptr<SocketType> sock)
    {
        std::unique_lock<std::shared_mutex> _connection_map_mtx;
 
        _connection_map.emplace(conn_name, sock);
    }
 
    std::shared_ptr<SocketType> get_socket_from_connections(std::string const &conn_name)
    {
        std::shared_lock<std::shared_mutex> _connection_map_mtx;
 
        try {
            return _connection_map.at(conn_name);
        } catch (std::out_of_range &/*e*/) {
            return std::shared_ptr<SocketType>();
        }
    }
 
    void remove_socket_from_connections(std::string const &conn_name)
    {
        std::unique_lock<std::shared_mutex> _connection_map_mtx;
 
        auto socket = _connection_map.find(conn_name);
 
        if (socket != _connection_map.end())
            socket->second->delayed_close_socket();
 
        _connection_map.erase(conn_name);
    }
 
 
private:
    std::shared_mutex _connection_map_mtx;
    ConnectionMap _connection_map;
};
}
}
#endif /* HORIZON_NETWORKING_CONNECTSOCKETMGR_HPP */