140 lines
4.9 KiB
JavaScript
140 lines
4.9 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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var mqlight = require('mqlight');
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var util = require("util");
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function MQLightServiceNode(n) {
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RED.nodes.createNode(this,n);
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var id = "mqlight_" + (n.clientid ? n.clientid : (1+Math.random()*4294967295).toString(16));
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var opts = {
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service: n.service,
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id: id
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};
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if (this.credentials) {
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opts.user = this.credentials.user;
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opts.password = this.credentials.password;
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}
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this.client = mqlight.createClient(opts, function(err) {
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if (err) {
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util.log('[mqlight] ['+id+'] not connected to service '+n.service);
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}
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else {
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util.log('[mqlight] ['+id+'] connected to service '+n.service);
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}
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});
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this.client.on("error", function(err) {
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if (err) { util.log('[mqlight] ['+id+'] '+ err.toString()); }
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});
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}
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RED.nodes.registerType("mqlight service",MQLightServiceNode,{
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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 MQLightIn(n) {
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RED.nodes.createNode(this, n);
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this.topic = n.topic || "";
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this.share = n.share || null;
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this.service = n.service;
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this.serviceConfig = RED.nodes.getNode(this.service);
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var node = this;
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if (node.serviceConfig) {
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if (node.serviceConfig.client) {
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var recvClient = node.serviceConfig.client;
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recvClient.on("error", function(err) {
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if (err) { node.error(err.toString()); }
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});
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recvClient.on("started", function() {
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recvClient.on("message", function(data, delivery) {
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if (node.topic === delivery.destination.topicPattern) {
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var msg = {
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topic: delivery.message.topic,
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payload: data,
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_session: {
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type: "mqlight",
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id: recvClient.id
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}
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};
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if (delivery.destination.share) {
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msg.share = delivery.destination.share;
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}
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node.send(msg);
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}
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});
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var subscribeCallback = function(err) {
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if (err) {
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node.error("Failed to subscribe: " + err);
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}
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else {
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node.log("Subscribed to "+node.topic+(node.share?" ["+node.share+"]":""));
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}
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};
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if (node.share) {
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recvClient.subscribe(node.topic, node.share, subscribeCallback);
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}
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else {
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recvClient.subscribe(node.topic, subscribeCallback);
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}
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});
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recvClient.start();
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node.on("close", function (done) {
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recvClient.stop(done);
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});
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}
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}
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}
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RED.nodes.registerType("mqlight in", MQLightIn);
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function MQLightOut(n) {
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RED.nodes.createNode(this, n);
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this.topic = n.topic || "";
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this.service = n.service;
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this.serviceConfig = RED.nodes.getNode(this.service);
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var node = this;
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if (node.serviceConfig) {
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if (node.serviceConfig.client) {
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var sendClient = node.serviceConfig.client;
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sendClient.on("error", function(err) {
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if (err) { node.error(err.toString()); }
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});
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sendClient.on("started", function () {
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node.on("input", function(msg) {
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var topic = node.topic;
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if (topic === "") {
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if (msg.topic) {
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topic = msg.topic;
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}
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else {
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node.warn("No topic set in MQ Light out node");
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return;
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}
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}
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sendClient.send(topic, msg.payload, function(err) {
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if (err) {
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node.error(err,msg);
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}
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});
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});
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});
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sendClient.start();
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node.on("close", function (done) {
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sendClient.stop(done);
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});
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}
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}
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}
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RED.nodes.registerType("mqlight out", MQLightOut);
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};
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