90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
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/*------------------------------------------------------------------------------*
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* Architecture & Implementation of DBMS *
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*------------------------------------------------------------------------------*
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* Copyright 2022 Databases and Information Systems Group TU Dortmund *
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* Visit us at *
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* http://dbis.cs.tu-dortmund.de/cms/en/home/ *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
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* OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Authors: *
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* Maximilian Berens <maximilian.berens@tu-dortmund.de> *
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* Roland Kühn <roland.kuehn@cs.tu-dortmund.de> *
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* Jan Mühlig <jan.muehlig@tu-dortmund.de> *
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*------------------------------------------------------------------------------*
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*/
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#pragma once
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#include <array>
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#include <config.h>
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#include <cstddef>
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#include <cstdint>
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#include <optional>
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#include <string>
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namespace beedb::network
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{
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class Server;
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class ClientHandler
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{
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public:
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ClientHandler() noexcept = default;
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virtual ~ClientHandler() noexcept = default;
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virtual std::optional<std::string> handle_message(const std::uint32_t client_id, const std::string &message) = 0;
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virtual void on_client_connected(const std::uint32_t id) = 0;
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virtual void on_client_disconnected(const std::uint32_t id) = 0;
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virtual void server(Server *server)
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{
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_server = server;
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}
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protected:
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[[nodiscard]] Server *server() const
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{
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return _server;
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}
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private:
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Server *_server = nullptr;
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};
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class Server
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{
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public:
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Server(ClientHandler &message_handler, std::uint16_t port) noexcept;
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~Server() noexcept = default;
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[[nodiscard]] std::uint16_t port() const noexcept
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{
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return _port;
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}
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[[nodiscard]] bool is_running() const noexcept
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{
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return _is_running;
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}
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void stop() noexcept
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{
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_is_running = false;
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}
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void send(std::uint32_t client_id, std::string &&message);
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bool listen();
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private:
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const std::uint16_t _port;
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std::int32_t _socket;
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std::array<std::uint32_t, Config::max_clients> _client_sockets;
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std::array<char, 512> _buffer;
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ClientHandler &_handler;
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alignas(64) bool _is_running = true;
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std::uint16_t add_client(std::int32_t client_socket);
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};
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} // namespace beedb::network
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