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redis/examples/cpp20_protobuf.cpp
2023-03-14 20:11:22 +01:00

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2.3 KiB
C++

/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
*
* Distributed under the Boost Software License, Version 1.0. (See
* accompanying file LICENSE.txt)
*/
#include <boost/redis/run.hpp>
#include <boost/asio/use_awaitable.hpp>
#include <boost/asio/co_spawn.hpp>
#include <boost/asio/detached.hpp>
#include <iostream>
#include "protobuf.hpp"
// See the definition in person.proto. This header is automatically
// generated by CMakeLists.txt.
#include "person.pb.h"
#if defined(BOOST_ASIO_HAS_CO_AWAIT)
namespace net = boost::asio;
namespace redis = boost::redis;
using boost::redis::request;
using boost::redis::response;
using boost::redis::operation;
using boost::redis::ignore_t;
using boost::redis::async_run;
using connection = net::use_awaitable_t<>::as_default_on_t<boost::redis::connection>;
// The protobuf type described in examples/person.proto
using tutorial::person;
// Boost.Redis customization points (examples/protobuf.hpp)
namespace tutorial
{
void boost_redis_to_bulk(std::string& to, person const& u)
{ boost::redis::protobuf::to_bulk(to, u); }
void boost_redis_from_bulk(person& u, std::string_view sv, boost::system::error_code& ec)
{ boost::redis::protobuf::from_bulk(u, sv, ec); }
} // tutorial
using tutorial::boost_redis_to_bulk;
using tutorial::boost_redis_from_bulk;
auto run(std::shared_ptr<connection> conn, std::string host, std::string port) -> net::awaitable<void>
{
co_await async_run(*conn, host, port);
}
net::awaitable<void> co_main(std::string host, std::string port)
{
auto ex = co_await net::this_coro::executor;
auto conn = std::make_shared<connection>(ex);
net::co_spawn(ex, run(conn, host, port), net::detached);
person p;
p.set_name("Louis");
p.set_id(3);
p.set_email("No email yet.");
request req;
req.push("HELLO", 3);
req.push("SET", "protobuf-key", p);
req.push("GET", "protobuf-key");
response<ignore_t, ignore_t, person> resp;
// Sends the request and receives the response.
co_await conn->async_exec(req, resp);
std::cout
<< "Name: " << std::get<2>(resp).value().name() << "\n"
<< "Age: " << std::get<2>(resp).value().id() << "\n"
<< "Email: " << std::get<2>(resp).value().email() << "\n";
conn->cancel(operation::run);
}
#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)