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e414b3941a
Modifies the health checker to use asio::cancel_after rather than a separate parallel group task
72 lines
2.1 KiB
C++
72 lines
2.1 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/redis/connection.hpp>
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#include <boost/asio/co_spawn.hpp>
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#include <boost/asio/consign.hpp>
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#include <boost/asio/detached.hpp>
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#include <boost/asio/redirect_error.hpp>
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#include <boost/asio/signal_set.hpp>
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#include <iostream>
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#if defined(BOOST_ASIO_HAS_CO_AWAIT)
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namespace asio = boost::asio;
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using boost::asio::signal_set;
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using boost::redis::request;
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using boost::redis::response;
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using boost::redis::config;
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using boost::system::error_code;
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using boost::redis::connection;
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using namespace std::chrono_literals;
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auto echo_server_session(asio::ip::tcp::socket socket, std::shared_ptr<connection> conn)
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-> asio::awaitable<void>
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{
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request req;
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response<std::string> resp;
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for (std::string buffer;;) {
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auto n = co_await asio::async_read_until(socket, asio::dynamic_buffer(buffer, 1024), "\n");
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req.push("PING", buffer);
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co_await conn->async_exec(req, resp);
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co_await asio::async_write(socket, asio::buffer(std::get<0>(resp).value()));
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std::get<0>(resp).value().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) -> asio::awaitable<void>
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{
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try {
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auto ex = co_await asio::this_coro::executor;
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asio::ip::tcp::acceptor acc(ex, {asio::ip::tcp::v4(), 55555});
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for (;;)
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asio::co_spawn(ex, echo_server_session(co_await acc.async_accept(), conn), asio::detached);
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} catch (std::exception const& e) {
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std::clog << "Listener: " << e.what() << std::endl;
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}
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}
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// Called from the main function (see main.cpp)
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auto co_main(config cfg) -> asio::awaitable<void>
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{
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auto ex = co_await asio::this_coro::executor;
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auto conn = std::make_shared<connection>(ex);
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asio::co_spawn(ex, listener(conn), asio::detached);
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conn->async_run(cfg, asio::consign(asio::detached, conn));
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signal_set sig_set(ex, SIGINT, SIGTERM);
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co_await sig_set.async_wait();
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conn->cancel();
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}
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#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)
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