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100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres at gmail dot com)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include <iostream>
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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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using aedis::resp3::node;
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using aedis::sentinel::command;
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using aedis::generic::client;
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using aedis::adapter::adapt;
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using client_type = client<net::ip::tcp::socket, command>;
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using response_type = std::vector<node<std::string>>;
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using adapter_type = aedis::adapter::adapter_t<response_type>;
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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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class receiver {
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public:
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receiver(client_type& db)
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: adapter_{adapt(resp_)}
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, db_{&db} {}
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void on_resp3(command cmd, node<boost::string_view> const& nd, boost::system::error_code& ec)
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{
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adapter_(nd, ec);
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}
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void on_read(command cmd, std::size_t)
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{
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switch (cmd) {
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case command::hello:
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db_->send(command::subscribe, "channel1", "channel2");
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break;
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default:;
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}
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resp_.clear();
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}
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void on_write(std::size_t n)
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{
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std::cout << "Number of bytes written: " << n << std::endl;
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}
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void on_push(std::size_t)
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{
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std::cout
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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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private:
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response_type resp_;
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adapter_type adapter_;
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client_type* db_;
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};
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int main()
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{
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net::io_context ioc;
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client_type db{ioc.get_executor()};
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receiver recv{db};
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db.set_read_handler([&recv](command cmd, std::size_t n){recv.on_read(cmd, n);});
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db.set_write_handler([&recv](std::size_t n){recv.on_write(n);});
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db.set_push_handler([&recv](std::size_t n){recv.on_push(n);});
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db.set_resp3_handler([&recv](command cmd, auto const& nd, auto& ec){recv.on_resp3(cmd, nd, ec);});
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db.async_run(
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{net::ip::make_address("127.0.0.1"), 6379},
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[](auto ec){ std::cout << ec.message() << std::endl;});
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ioc.run();
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}
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