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81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot com)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include <iostream>
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#include <aedis/aedis.hpp>
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#include "types.hpp"
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#include "utils.ipp"
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using namespace aedis;
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/* A more elaborate way sending requests where a new request is sent
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* only after the last one has arrived. This can be used as a starting
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* point for more complex applications.
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*
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* We also separate the application logic out out the coroutine for
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* clarity.
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*/
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// Adds a new element in the queue if necessary.
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void prepare_next(std::queue<resp3::request>& reqs)
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{
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if (std::empty(reqs) || std::size(reqs) == 1)
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reqs.push({});
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}
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void process_response(
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std::queue<resp3::request>& requests,
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resp3::response& resp)
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{
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std::cout
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<< requests.front().commands.front() << ":\n"
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<< resp << std::endl;
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switch (requests.front().commands.front()) {
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case command::hello:
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prepare_next(requests);
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requests.back().push(command::ping);
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break;
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case command::ping:
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prepare_next(requests);
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requests.back().push(command::quit);
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break;
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default: {};
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}
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}
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net::awaitable<void> ping()
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{
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auto socket = co_await make_connection();
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resp3::stream<tcp_socket> stream{std::move(socket)};
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std::queue<resp3::request> requests;
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requests.push({});
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requests.back().push(command::hello, 3);
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while (!std::empty(requests)) {
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co_await stream.async_write(requests.front());
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while (!std::empty(requests.front().commands)) {
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resp3::response resp;
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co_await stream.async_read(resp);
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process_response(requests, resp);
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requests.front().commands.pop();
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}
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requests.pop();
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}
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}
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int main()
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{
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net::io_context ioc;
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co_spawn(ioc, ping(), net::detached);
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ioc.run();
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}
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