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83 lines
2.5 KiB
C++
83 lines
2.5 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/run.hpp>
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#include <boost/asio/use_awaitable.hpp>
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#include <boost/asio/detached.hpp>
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#include <boost/asio/co_spawn.hpp>
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#include <boost/describe.hpp>
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#include <string>
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#include <iostream>
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#include "json.hpp"
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#if defined(BOOST_ASIO_HAS_CO_AWAIT)
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// Include this in no more than one .cpp file.
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#define BOOST_JSON_NO_LIB
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#define BOOST_CONTAINER_NO_LIB
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#include <boost/json/src.hpp>
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namespace net = boost::asio;
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namespace redis = boost::redis;
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using namespace boost::describe;
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using boost::redis::request;
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using boost::redis::response;
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using boost::redis::operation;
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using boost::redis::ignore_t;
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using boost::redis::async_run;
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using connection = boost::asio::use_awaitable_t<>::as_default_on_t<boost::redis::connection>;
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// Struct that will be stored in Redis using json serialization.
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struct user {
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std::string name;
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std::string age;
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std::string country;
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};
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// The type must be described for serialization to work.
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BOOST_DESCRIBE_STRUCT(user, (), (name, age, country))
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// Boost.Redis customization points (examples/json.hpp)
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void boost_redis_to_bulk(std::string& to, user const& u)
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{ boost::redis::json::to_bulk(to, u); }
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void boost_redis_from_bulk(user& u, std::string_view sv, boost::system::error_code& ec)
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{ boost::redis::json::from_bulk(u, sv, ec); }
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auto run(std::shared_ptr<connection> conn, std::string host, std::string port) -> net::awaitable<void>
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{
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co_await async_run(*conn, host, port);
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}
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net::awaitable<void> co_main(std::string host, std::string port)
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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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net::co_spawn(ex, run(conn, host, port), net::detached);
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// user object that will be stored in Redis in json format.
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user const u{"Joao", "58", "Brazil"};
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// Stores and retrieves in the same request.
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request req;
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req.push("HELLO", 3);
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req.push("SET", "json-key", u); // Stores in Redis.
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req.push("GET", "json-key"); // Retrieves from Redis.
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response<ignore_t, ignore_t, user> resp;
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co_await conn->async_exec(req, resp);
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// Prints the first ping
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std::cout
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<< "Name: " << std::get<2>(resp).value().name << "\n"
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<< "Age: " << std::get<2>(resp).value().age << "\n"
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<< "Country: " << std::get<2>(resp).value().country << "\n";
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conn->cancel(operation::run);
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}
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#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)
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