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//
// Copyright (c) 2025 Marcelo Zimbres Silva (mzimbres@gmail.com),
// Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include <boost/redis/connection.hpp>
#include <boost/redis/logger.hpp>
#include <boost/asio/detached.hpp>
#include <boost/system/error_code.hpp>
#include <cstddef>
#include <iostream>
#include <spdlog/spdlog.h>
#include <string_view>
namespace asio = boost::asio;
namespace redis = boost::redis;
// Maps a Boost.Redis log level to a spdlog log level
static spdlog::level::level_enum to_spdlog_level(redis::logger::level lvl)
{
switch (lvl) {
// spdlog doesn't include the emerg and alert syslog levels,
// so we convert them to the highest supported level.
// Similarly, notice is similar to info
case redis::logger::level::emerg:
case redis::logger::level::alert:
case redis::logger::level::crit: return spdlog::level::critical;
case redis::logger::level::err: return spdlog::level::err;
case redis::logger::level::warning: return spdlog::level::warn;
case redis::logger::level::notice:
case redis::logger::level::info: return spdlog::level::info;
case redis::logger::level::debug:
default: return spdlog::level::debug;
}
}
// This function glues Boost.Redis logging and spdlog.
// It should have the signature shown here. It will be invoked
// by Boost.Redis whenever a message is to be logged.
static void do_log(redis::logger::level level, std::string_view msg)
{
spdlog::log(to_spdlog_level(level), "(Boost.Redis) {}", msg);
}
auto main(int argc, char** argv) -> int
{
try {
// Create an execution context, required to create any I/O objects
asio::io_context ioc;
// Create a connection to connect to Redis, and pass it a custom logger.
// Boost.Redis will call do_log whenever it needs to log a message.
// Note that the function will only be called for messages with level >= info
// (i.e. filtering is done by Boost.Redis).
redis::connection conn{
ioc,
redis::logger{redis::logger::level::info, do_log}
};
// Configuration to connect to the server. Adjust as required
redis::config cfg;
if (argc == 3) {
cfg.addr.host = argv[1];
cfg.addr.port = argv[2];
}
// Run the connection with the specified configuration.
// This will establish the connection and keep it healthy
conn.async_run(cfg, asio::detached);
// Execute a request
redis::request req;
req.push("PING", "Hello world");
redis::response<std::string> resp;
conn.async_exec(req, resp, [&](boost::system::error_code ec, std::size_t /* bytes_read*/) {
if (ec) {
spdlog::error("Request failed: {}", ec.what());
exit(1);
} else {
spdlog::info("PING: {}", std::get<0>(resp).value());
}
conn.cancel();
});
// Actually run our example. Nothing will happen until we call run()
ioc.run();
} catch (std::exception const& e) {
spdlog::error("Error: {}", e.what());
return 1;
}
}
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