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redis/examples/pubsub.cpp
2021-10-23 15:08:38 +02:00

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2.0 KiB
C++

/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot 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 <chrono>
#include <aedis/aedis.hpp>
#include "utils.ipp"
using namespace aedis;
net::awaitable<void> publisher()
{
auto ex = net::this_coro::executor;
auto socket = co_await make_connection();
std::queue<resp3::request> requests;
requests.push({});
requests.back().push(command::hello, "3");
resp3::connection conn;
for (;;) {
resp3::response resp;
co_await conn.async_consume(socket, requests, resp);
if (requests.front().elements.front().cmd == command::hello) {
prepare_next(requests);
requests.back().push(command::publish, "channel1", "Message to channel1");
requests.back().push(command::publish, "channel2", "Message to channel2");
requests.back().push(command::quit);
}
}
}
net::awaitable<void> subscriber()
{
auto ex = net::this_coro::executor;
auto socket = co_await make_connection();
std::string id;
std::queue<resp3::request> requests;
requests.push({});
requests.back().push(command::hello, "3");
resp3::connection conn;
for (;;) {
resp3::response resp;
co_await conn.async_consume(socket, requests, resp);
if (resp.get_type() == resp3::type::push) {
std::cout << "Subscriber " << id << ":\n" << resp << std::endl;
continue;
}
if (requests.front().elements.front().cmd == command::hello) {
id = resp.raw().at(8).data;
prepare_next(requests);
requests.back().subscribe({"channel1", "channel2"});
}
}
}
int main()
{
net::io_context ioc;
co_spawn(ioc, subscriber(), net::detached);
co_spawn(ioc, subscriber(), net::detached);
co_spawn(ioc, subscriber(), net::detached);
co_spawn(ioc, publisher(), net::detached);
ioc.run();
}