diff -r 7ef5ce9477c8 -r cb9577442d3b src/MQTT.h --- a/src/MQTT.h Fri May 06 21:54:32 2022 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,70 +0,0 @@ -/** - * Relational pipes - * Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info) - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, version 3 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ -#pragma once - -#include -#include -#include -#include - -namespace relpipe { -namespace out { -namespace mqtt { - -class MQTT { -private: - const static size_t MSG_SIZE = 8192; // TODO: configurable/dynamic - std::string queueName; - mqd_t handle = -2; - bool unlinkOnClose = false; - - MQTT(std::string queueName, mqd_t handle, bool unlinkOnClose) : queueName(queueName), handle(handle), unlinkOnClose(unlinkOnClose) { - } - -public: - - virtual ~MQTT() { - if (handle >= 0) mq_close(handle); - if (unlinkOnClose) mq_unlink(queueName.c_str()); - } - - static MQTT* open(std::string queueName, bool unlinkOnClose = false) { - mqd_t handle = mq_open(queueName.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); - if (handle >= 0) return new MQTT(queueName, handle, unlinkOnClose); - else throw std::logic_error("Unable to open MQTT: " + queueName + " error: " + strerror(errno)); - } - - void send(std::string message) { - int result = mq_send(handle, message.c_str(), message.size(), 0); - if (result) throw std::logic_error("Unable to send message to" + queueName + " error: " + strerror(errno)); - } - - std::string receive() { - char buffer[MSG_SIZE + 1]; - memset(buffer, 0, MSG_SIZE + 1); - ssize_t msgSize = mq_receive(handle, buffer, MSG_SIZE, nullptr); - - if (msgSize > sizeof (buffer))throw std::logic_error("Invalid MQTT message size."); - else if (msgSize >= 0) return std::string(buffer, msgSize); - else throw std::logic_error("Unable to receive MQTT message from " + queueName + " error: " + strerror(errno)); - } - -}; - -} -} -}