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67 lines
1.8 KiB
C++
67 lines
1.8 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 <vector>
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#include <string>
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#include <vector>
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#include <iostream>
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#include <boost/asio.hpp>
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#include <aedis/aedis.hpp>
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#include <aedis/src.hpp>
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namespace net = boost::asio;
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namespace generic = aedis::generic;
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namespace adapter = aedis::adapter;
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using aedis::redis::command;
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using aedis::generic::request;
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using connection = generic::connection<command>;
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using response_type = std::vector<aedis::resp3::node<std::string>>;
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/* In this example we send a subscription to a channel and start
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* reading server side messages indefinitely.
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*
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* After starting the example you can test it by sending messages with
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* redis-cli like this
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*
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* $ redis-cli -3
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* 127.0.0.1:6379> PUBLISH channel1 some-message
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* (integer) 3
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* 127.0.0.1:6379>
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*
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* The messages will then appear on the terminal you are running the
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* example.
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*/
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net::awaitable<void> reader(std::shared_ptr<connection> db)
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{
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request<command> req;
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req.push(command::subscribe, "channel");
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co_await db->async_exec(req, generic::adapt(), net::use_awaitable);
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for (response_type resp;;) {
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auto n = co_await db->async_read_push(adapter::adapt(resp), net::use_awaitable);
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std::cout
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<< "Size: " << n << "\n"
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<< "Event: " << resp.at(1).value << "\n"
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<< "Channel: " << resp.at(2).value << "\n"
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<< "Message: " << resp.at(3).value << "\n"
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<< std::endl;
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resp.clear();
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}
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}
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auto handler = [](auto ec, auto...)
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{ std::cout << ec.message() << std::endl; };
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int main()
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{
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net::io_context ioc;
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auto db = std::make_shared<connection>(ioc);
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net::co_spawn(ioc, reader(db), net::detached);
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db->async_run(handler);
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ioc.run();
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}
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