mirror of
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122 lines
4.7 KiB
JavaScript
122 lines
4.7 KiB
JavaScript
/**
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* Copyright 2013,2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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module.exports = function(RED) {
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"use strict";
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var connectionPool = require("./lib/mqttConnectionPool");
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function MQTTBrokerNode(n) {
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RED.nodes.createNode(this,n);
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this.broker = n.broker;
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this.port = n.port;
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this.clientid = n.clientid;
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if (this.credentials) {
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this.username = this.credentials.user;
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this.password = this.credentials.password;
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}
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}
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RED.nodes.registerType("mqtt-broker",MQTTBrokerNode,{
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credentials: {
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user: {type:"text"},
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password: {type: "password"}
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}
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});
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function MQTTInNode(n) {
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RED.nodes.createNode(this,n);
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this.topic = n.topic;
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this.broker = n.broker;
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this.brokerConfig = RED.nodes.getNode(this.broker);
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if (this.brokerConfig) {
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this.status({fill:"red",shape:"ring",text:"disconnected"});
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this.client = connectionPool.get(this.brokerConfig.broker,this.brokerConfig.port,this.brokerConfig.clientid,this.brokerConfig.username,this.brokerConfig.password);
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var node = this;
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this.client.subscribe(this.topic,2,function(topic,payload,qos,retain) {
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var msg = {topic:topic,payload:payload,qos:qos,retain:retain};
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if ((node.brokerConfig.broker == "localhost")||(node.brokerConfig.broker == "127.0.0.1")) {
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msg._topic = topic;
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}
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node.send(msg);
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});
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this.client.on("connectionlost",function() {
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node.status({fill:"red",shape:"ring",text:"disconnected"});
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});
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this.client.on("connect",function() {
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node.status({fill:"green",shape:"dot",text:"connected"});
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});
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this.client.connect();
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} else {
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this.error("missing broker configuration");
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}
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this.on('close', function() {
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if (this.client) {
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this.client.disconnect();
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}
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});
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}
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RED.nodes.registerType("mqtt in",MQTTInNode);
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function MQTTOutNode(n) {
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RED.nodes.createNode(this,n);
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this.topic = n.topic;
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this.qos = n.qos || null;
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this.retain = n.retain;
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this.broker = n.broker;
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this.brokerConfig = RED.nodes.getNode(this.broker);
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if (this.brokerConfig) {
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this.status({fill:"red",shape:"ring",text:"disconnected"},true);
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this.client = connectionPool.get(this.brokerConfig.broker,this.brokerConfig.port,this.brokerConfig.clientid,this.brokerConfig.username,this.brokerConfig.password);
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var node = this;
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this.on("input",function(msg) {
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if (msg != null) {
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if (msg.qos) {
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msg.qos = parseInt(msg.qos);
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if ((msg.qos !== 0) && (msg.qos !== 1) && (msg.qos !== 2)) {
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msg.qos = null;
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}
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}
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msg.qos = Number(node.qos || msg.qos || 0);
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msg.retain = node.retain || msg.retain || false;
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msg.retain = ((msg.retain === true) || (msg.retain === "true")) || false;
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if (node.topic) {
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msg.topic = node.topic;
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}
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if (typeof msg.topic === "string") { // topic must be a string
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this.client.publish(msg); // send the message
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}
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else { node.warn("Invalid topic specified"); }
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}
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});
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this.client.on("connectionlost",function() {
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node.status({fill:"red",shape:"ring",text:"disconnected"});
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});
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this.client.on("connect",function() {
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node.status({fill:"green",shape:"dot",text:"connected"});
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});
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this.client.connect();
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} else {
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this.error("missing broker configuration");
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}
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this.on('close', function() {
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if (this.client) {
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this.client.disconnect();
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}
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});
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}
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RED.nodes.registerType("mqtt out",MQTTOutNode);
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}
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