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