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78 lines
2.4 KiB
C++
78 lines
2.4 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/deferred.hpp>
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#include <boost/asio/detached.hpp>
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#include <boost/describe.hpp>
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#include <boost/asio/consign.hpp>
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#include <boost/asio/use_awaitable.hpp>
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#include <string>
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#include <iostream>
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#if defined(BOOST_ASIO_HAS_CO_AWAIT)
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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/serialize.hpp>
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#include <boost/json/parse.hpp>
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#include <boost/json/value_from.hpp>
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#include <boost/redis/resp3/serialization.hpp>
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#include <boost/json/src.hpp>
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namespace net = boost::asio;
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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::ignore_t;
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using boost::redis::config;
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using connection = net::deferred_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::resp3::boost_redis_to_bulk(to, boost::json::serialize(boost::json::value_from(u))); }
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void boost_redis_from_bulk(user& u, std::string_view sv, boost::system::error_code&)
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{ u = boost::json::value_to<user>(boost::json::parse(sv)); }
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auto co_main(config cfg) -> net::awaitable<void>
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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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conn->async_run(cfg, {}, net::consign(net::detached, conn));
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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("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, user> resp;
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co_await conn->async_exec(req, resp);
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conn->cancel();
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// Prints the first ping
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std::cout
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<< "Name: " << std::get<1>(resp).value().name << "\n"
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<< "Age: " << std::get<1>(resp).value().age << "\n"
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<< "Country: " << std::get<1>(resp).value().country << "\n";
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}
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#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)
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