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63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
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*
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* Distributed under the Boost Software License, Version 1.0. (See
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* accompanying file LICENSE.txt)
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*/
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#include <boost/asio.hpp>
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#if defined(BOOST_ASIO_HAS_CO_AWAIT)
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#include <boost/asio/experimental/awaitable_operators.hpp>
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#include <aedis.hpp>
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#include "common/common.hpp"
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namespace net = boost::asio;
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namespace resp3 = aedis::resp3;
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using namespace net::experimental::awaitable_operators;
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using tcp_socket = net::use_awaitable_t<>::as_default_on_t<net::ip::tcp::socket>;
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using tcp_acceptor = net::use_awaitable_t<>::as_default_on_t<net::ip::tcp::acceptor>;
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using signal_set = net::use_awaitable_t<>::as_default_on_t<net::signal_set>;
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using aedis::adapt;
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auto echo_server_session(tcp_socket socket, std::shared_ptr<connection> conn) -> net::awaitable<void>
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{
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resp3::request req;
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std::string resp;
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for (std::string buffer;;) {
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auto n = co_await net::async_read_until(socket, net::dynamic_buffer(buffer, 1024), "\n");
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req.push("PING", buffer);
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auto tmp = std::tie(resp);
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co_await conn->async_exec(req, adapt(tmp));
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co_await net::async_write(socket, net::buffer(resp));
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resp.clear();
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req.clear();
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buffer.erase(0, n);
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}
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}
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// Listens for tcp connections.
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auto listener(std::shared_ptr<connection> conn) -> net::awaitable<void>
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{
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auto ex = co_await net::this_coro::executor;
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tcp_acceptor acc(ex, {net::ip::tcp::v4(), 55555});
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for (;;)
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net::co_spawn(ex, echo_server_session(co_await acc.async_accept(), conn), net::detached);
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}
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// Called from the main function (see main.cpp)
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auto async_main() -> net::awaitable<void>
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{
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auto ex = co_await net::this_coro::executor;
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auto conn = std::make_shared<connection>(ex);
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signal_set sig{ex, SIGINT, SIGTERM};
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resp3::request req;
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req.push("HELLO", 3);
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co_await connect(conn, "127.0.0.1", "6379");
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co_await ((conn->async_run() || listener(conn) || healthy_checker(conn) ||
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sig.async_wait()) && conn->async_exec(req));
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}
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#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)
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