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Async.MQTT5 -> Boost.MQTT5
Summary: related to T15996 folder structure include/async_mqtt5 -> include/boost/mqtt5 namespace async_mqtt5 -> namespace boost::mqtt5 all tabs replaced with 4 spaces (because tabs are banned) boost-like order of includes TODO: fix all docs Reviewers: ivica Reviewed By: ivica Subscribers: iljazovic, miljen Differential Revision: https://repo.mireo.local/D33152
This commit is contained in:
Korina Šimičević
+83
-84
@@ -9,131 +9,130 @@
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#ifdef BOOST_ASIO_HAS_CO_AWAIT
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//[publisher
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#include <chrono>
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#include <cstdlib>
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#include <iostream>
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#include <string>
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#include <boost/mqtt5/logger.hpp>
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#include <boost/mqtt5/mqtt_client.hpp>
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#include <boost/mqtt5/reason_codes.hpp>
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#include <boost/mqtt5/types.hpp>
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#include <boost/asio/as_tuple.hpp>
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#include <boost/asio/co_spawn.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/asio/io_context.hpp>
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#include <boost/asio/ip/tcp.hpp>
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#include <boost/asio/signal_set.hpp>
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#include <boost/asio/steady_timer.hpp>
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#include <boost/asio/ip/tcp.hpp>
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#include <async_mqtt5/logger.hpp>
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#include <async_mqtt5/mqtt_client.hpp>
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#include <async_mqtt5/reason_codes.hpp>
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#include <async_mqtt5/types.hpp>
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#include <chrono>
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#include <cstdlib>
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#include <iostream>
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#include <string>
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struct config {
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std::string brokers = "broker.hivemq.com";
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uint16_t port = 1883;
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std::string client_id = "async_mqtt5_tester";
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std::string brokers = "broker.hivemq.com";
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uint16_t port = 1883;
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std::string client_id = "async_mqtt5_tester";
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};
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// Modified completion token that will prevent co_await from throwing exceptions.
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constexpr auto use_nothrow_awaitable = boost::asio::as_tuple(boost::asio::deferred);
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// client_type with logging enabled
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using client_type = async_mqtt5::mqtt_client<
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boost::asio::ip::tcp::socket, std::monostate /* TlsContext */, async_mqtt5::logger
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using client_type = boost::mqtt5::mqtt_client<
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boost::asio::ip::tcp::socket, std::monostate /* TlsContext */, boost::mqtt5::logger
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>;
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// client_type without logging
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//using client_type = async_mqtt5::mqtt_client<boost::asio::ip::tcp::socket>;
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//using client_type = boost::mqtt5::mqtt_client<boost::asio::ip::tcp::socket>;
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int next_sensor_reading() {
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srand(static_cast<unsigned int>(std::time(0)));
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return rand() % 100;
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srand(static_cast<unsigned int>(std::time(0)));
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return rand() % 100;
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}
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boost::asio::awaitable<void> publish_sensor_readings(
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const config& cfg, client_type& client, boost::asio::steady_timer& timer
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const config& cfg, client_type& client, boost::asio::steady_timer& timer
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) {
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// Configure the Client.
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// It is mandatory to call brokers() and async_run() to configure the Brokers to connect to and start the Client.
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client.brokers(cfg.brokers, cfg.port) // Broker that we want to connect to.
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.credentials(cfg.client_id) // Set the Client Identifier. (optional)
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.async_run(boost::asio::detached); // Start the Client.
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// Configure the Client.
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// It is mandatory to call brokers() and async_run() to configure the Brokers to connect to and start the Client.
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client.brokers(cfg.brokers, cfg.port) // Broker that we want to connect to.
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.credentials(cfg.client_id) // Set the Client Identifier. (optional)
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.async_run(boost::asio::detached); // Start the Client.
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for (;;) {
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// Get the next sensor reading.
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auto reading = std::to_string(next_sensor_reading());
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for (;;) {
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// Get the next sensor reading.
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auto reading = std::to_string(next_sensor_reading());
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// Publish the sensor reading with QoS 1.
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auto&& [ec, rc, props] = co_await client.async_publish<async_mqtt5::qos_e::at_least_once>(
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"async-mqtt5/test" /* topic */, reading /* payload */,
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async_mqtt5::retain_e::no, async_mqtt5::publish_props {}, use_nothrow_awaitable
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);
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// An error can occur as a result of:
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// a) wrong publish parameters
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// b) mqtt_client::cancel is called while the Client is publishing the message
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// resulting in cancellation.
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if (ec) {
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std::cout << "Publish error occurred: " << ec.message() << std::endl;
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break;
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}
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// Publish the sensor reading with QoS 1.
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auto&& [ec, rc, props] = co_await client.async_publish<boost::mqtt5::qos_e::at_least_once>(
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"async-mqtt5/test" /* topic */, reading /* payload */,
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boost::mqtt5::retain_e::no, boost::mqtt5::publish_props {}, use_nothrow_awaitable
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);
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// An error can occur as a result of:
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// a) wrong publish parameters
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// b) mqtt_client::cancel is called while the Client is publishing the message
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// resulting in cancellation.
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if (ec) {
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std::cout << "Publish error occurred: " << ec.message() << std::endl;
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break;
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}
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// Reason code is the reply from the server presenting the result of the publish operation.
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std::cout << "Result of publish request: " << rc.message() << std::endl;
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if (!rc)
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std::cout << "Published sensor reading: " << reading << std::endl;
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// Reason code is the reply from the server presenting the result of the publish operation.
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std::cout << "Result of publish request: " << rc.message() << std::endl;
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if (!rc)
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std::cout << "Published sensor reading: " << reading << std::endl;
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// Wait 5 seconds before publishing the next reading.
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timer.expires_after(std::chrono::seconds(5));
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auto&& [tec] = co_await timer.async_wait(use_nothrow_awaitable);
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// Wait 5 seconds before publishing the next reading.
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timer.expires_after(std::chrono::seconds(5));
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auto&& [tec] = co_await timer.async_wait(use_nothrow_awaitable);
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// An error occurred if we cancelled the timer.
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if (tec)
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break;
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}
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// An error occurred if we cancelled the timer.
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if (tec)
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break;
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}
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co_return;
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co_return;
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}
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int main(int argc, char** argv) {
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config cfg;
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config cfg;
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if (argc == 4) {
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cfg.brokers = argv[1];
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cfg.port = uint16_t(std::stoi(argv[2]));
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cfg.client_id = argv[3];
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}
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if (argc == 4) {
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cfg.brokers = argv[1];
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cfg.port = uint16_t(std::stoi(argv[2]));
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cfg.client_id = argv[3];
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}
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// Initialise execution context.
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boost::asio::io_context ioc;
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// Initialise execution context.
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boost::asio::io_context ioc;
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// Initialise the Client to connect to the Broker over TCP.
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client_type client(ioc, {} /* tls_context */, async_mqtt5::logger(async_mqtt5::log_level::info));
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// Initialise the Client to connect to the Broker over TCP.
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client_type client(ioc, {} /* tls_context */, boost::mqtt5::logger(boost::mqtt5::log_level::info));
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// Initialise the timer.
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boost::asio::steady_timer timer(ioc);
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// Initialise the timer.
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boost::asio::steady_timer timer(ioc);
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// Set up signals to stop the program on demand.
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boost::asio::signal_set signals(ioc, SIGINT, SIGTERM);
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signals.async_wait([&client, &timer](async_mqtt5::error_code /* ec */, int /* signal */) {
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// After we are done with publishing all the messages, cancel the timer and the Client.
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// Alternatively, use mqtt_client::async_disconnect.
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timer.cancel();
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client.cancel();
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});
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// Set up signals to stop the program on demand.
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boost::asio::signal_set signals(ioc, SIGINT, SIGTERM);
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signals.async_wait([&client, &timer](boost::mqtt5::error_code /* ec */, int /* signal */) {
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// After we are done with publishing all the messages, cancel the timer and the Client.
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// Alternatively, use mqtt_client::async_disconnect.
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timer.cancel();
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client.cancel();
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});
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// Spawn the coroutine.
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co_spawn(
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ioc.get_executor(),
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publish_sensor_readings(cfg, client, timer),
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[](std::exception_ptr e) {
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if (e)
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std::rethrow_exception(e);
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}
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);
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// Spawn the coroutine.
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co_spawn(
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ioc.get_executor(),
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publish_sensor_readings(cfg, client, timer),
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[](std::exception_ptr e) {
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if (e)
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std::rethrow_exception(e);
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}
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);
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// Start the execution.
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ioc.run();
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// Start the execution.
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ioc.run();
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}
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//]
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@@ -143,7 +142,7 @@ int main(int argc, char** argv) {
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#include <iostream>
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int main() {
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std::cout << "This example requires C++20 standard to compile and run" << std::endl;
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std::cout << "This example requires C++20 standard to compile and run" << std::endl;
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}
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#endif
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