88 lines
3.3 KiB
JavaScript
88 lines
3.3 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const Mqtt = require("mqtt");
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const log = require("./log");
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const callchain = require("./callchain");
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const MQTT_BROKER_DEFAULT_URL = "mqtt://localhost";
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function passThrough(message) {
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return message;
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}
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exports.passThrough = passThrough;
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class MqttClient {
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constructor(mqttBrokerUrl) {
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this._mqttBrokerUrl = (mqttBrokerUrl) ? mqttBrokerUrl : MQTT_BROKER_DEFAULT_URL;
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this._topicHandlers = [];
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}
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registerCallbackFunc(topic, label, callbackFunc) {
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let newChainItem = new callchain.ChainItem(label);
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newChainItem.registerFunc(callbackFunc);
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this.registerCallbackClass(topic, label, newChainItem);
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}
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registerCallbackClass(topic, label, newChainItem) {
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let done = false;
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for (let topicHandler of this._topicHandlers) {
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if (topicHandler.topic === topic) {
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topicHandler.last.registerNext(newChainItem);
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topicHandler.last = newChainItem;
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done = true;
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log.info(`additional callback ${newChainItem.toString()} added for topic ${topic}`);
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}
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}
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if (!done) {
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this._topicHandlers.push({ topic: topic, root: newChainItem, last: newChainItem });
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log.info(`first callback ${newChainItem.toString()} added for topic ${topic}`);
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}
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}
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test() {
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this._mqttClient.emit("message", 'IoT/test', 'payload');
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}
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exec() {
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for (let topicHandler of this._topicHandlers) {
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topicHandler.root.begin();
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}
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this._mqttClient = Mqtt.connect(this._mqttBrokerUrl);
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this._mqttClient.on('error', log.error);
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this._mqttClient.on('connect', () => {
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log.info("connected to mqtt broker");
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for (let topicHandler of this._topicHandlers) {
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this._mqttClient.subscribe(topicHandler.topic);
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}
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});
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this._mqttClient.on('message', (topic, payload) => {
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log.info(`message received, topic ${topic}, payload ${payload}`);
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for (let topicHandler of this._topicHandlers) {
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if (this.topicMatch(topicHandler.topic, topic)) {
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log.info(`received topic ${topic} matches registered topic ${topicHandler.topic}`);
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topicHandler.root.send(payload);
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}
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}
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});
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}
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topicMatch(registeredTopic, receivedTopic) {
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let registeredTopicFields = registeredTopic.split('/');
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let receivedTopicFields = receivedTopic.split('/');
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for (let field in registeredTopicFields) {
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let regField = registeredTopicFields[field];
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let recvField = receivedTopicFields[field];
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log.info(`recv: ${recvField}, reg: ${regField}`);
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if (regField === "#") {
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log.info('true');
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return true;
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}
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if (regField != recvField && regField != "+") {
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log.info('false');
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return false;
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}
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}
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if (registeredTopicFields.length == receivedTopicFields.length) {
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log.info('true');
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return true;
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}
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else {
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log.info('false');
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return false;
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}
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}
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}
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exports.MqttClient = MqttClient;
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//# sourceMappingURL=mqttclient.js.map
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