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dist/mqttclient.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const Mqtt = require("mqtt");
+const log = require("./log");
+const MQTT_BROKER_DEFAULT_URL = "mqtt://localhost";
+class MqttClient {
+    constructor(mqttBrokerUrl) {
+        this._mqttBrokerUrl = (mqttBrokerUrl) ? mqttBrokerUrl : MQTT_BROKER_DEFAULT_URL;
+        this._topicHandlers = [];
+    }
+    register(topic, callback) {
+        this._topicHandlers.push({ topic, callback });
+        log.info(`handler registered for topic ${topic}`);
+    }
+    exec() {
+        this._mqttClient = Mqtt.connect(this._mqttBrokerUrl);
+        this._mqttClient.on('error', log.error);
+        this._mqttClient.on('connect', () => {
+            log.info("connected to mqtt broker");
+            for (let topicHandler of this._topicHandlers) {
+                this._mqttClient.subscribe(topicHandler.topic);
+            }
+        });
+        this._mqttClient.on('message', (topic, payload) => {
+            log.info(`message received, topic ${topic}, payload ${payload}`);
+            for (let topicHandler of this._topicHandlers) {
+                if (this.topicMatch(topicHandler.topic, topic)) {
+                    log.info(`received topic ${topic} matches registered topic ${topicHandler.topic}`);
+                }
+            }
+        });
+    }
+    topicMatch(registeredTopic, receivedTopic) {
+        let registeredTopicFields = registeredTopic.split('/');
+        let receivedTopicFields = receivedTopic.split('/');
+        for (let field in registeredTopicFields) {
+            let regField = registeredTopicFields[field];
+            let recvField = receivedTopicFields[field];
+            log.info(`recv: ${recvField}, reg: ${regField}`);
+            if (regField === "#") {
+                log.info('true');
+                return true;
+            }
+            if (regField != recvField && regField != "+") {
+                log.info('false');
+                return false;
+            }
+        }
+        if (registeredTopicFields.length == receivedTopicFields.length) {
+            log.info('true');
+            return true;
+        }
+        else {
+            log.info('false');
+            return false;
+        }
+    }
+}
+exports.MqttClient = MqttClient;
+//# sourceMappingURL=mqttclient.js.map