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redis/examples/intro.cpp
2022-01-29 20:04:03 +01:00

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1.9 KiB
C++

/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
#include <iostream>
#include <aedis/aedis.hpp>
#include <aedis/src.hpp>
#include "lib/net_utils.hpp"
namespace resp3 = aedis::resp3;
using aedis::redis::command;
using aedis::redis::make_serializer;
using resp3::adapt;
namespace net = aedis::net;
using net::async_write;
using net::buffer;
using net::dynamic_buffer;
net::awaitable<void> ping()
{
try {
auto socket = co_await connect(); // See lib/net_utils.hpp
// Creates and sends the request.
std::string request;
auto sr = make_serializer(request);
sr.push(command::hello, 3);
sr.push(command::flushall);
sr.push(command::ping);
sr.push(command::incr, "key");
sr.push(command::quit);
co_await async_write(socket, buffer(request));
// Responses we are interested in.
int incr;
std::string ping;
// Reads the responses to ping and incr, ignore the others.
std::string buffer;
co_await resp3::async_read(socket, dynamic_buffer(buffer)); // hello
co_await resp3::async_read(socket, dynamic_buffer(buffer)); // flushall
co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(ping));
co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(incr));
co_await resp3::async_read(socket, dynamic_buffer(buffer)); // quit
// Print the responses.
std::cout
<< "ping: " << ping << "\n"
<< "incr: " << incr << "\n";
} catch (std::exception const& e) {
std::cerr << e.what() << std::endl;
exit(EXIT_FAILURE);
}
}
int main()
{
net::io_context ioc;
co_spawn(ioc, ping(), net::detached);
ioc.run();
}