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-rw-r--r--dgbuilder/core_nodes/io/lib/mqttConnectionPool.js128
1 files changed, 0 insertions, 128 deletions
diff --git a/dgbuilder/core_nodes/io/lib/mqttConnectionPool.js b/dgbuilder/core_nodes/io/lib/mqttConnectionPool.js
deleted file mode 100644
index d15f0fc7..00000000
--- a/dgbuilder/core_nodes/io/lib/mqttConnectionPool.js
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@@ -1,128 +0,0 @@
-/**
- * Copyright 2013 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.
- **/
-var util = require("util");
-var mqtt = require("./mqtt");
-var settings = require(process.env.NODE_RED_HOME+"/red/red").settings;
-
-var connections = {};
-
-function matchTopic(ts,t) {
- if (ts == "#") {
- return true;
- }
- var re = new RegExp("^"+ts.replace(/([\[\]\?\(\)\\\\$\^\*\.|])/g,"\\$1").replace(/\+/g,"[^/]+").replace(/\/#$/,"(\/.*)?")+"$");
- return re.test(t);
-}
-
-module.exports = {
- get: function(broker,port,clientid,username,password,will) {
- var id = "["+(username||"")+":"+(password||"")+"]["+(clientid||"")+"]@"+broker+":"+port;
- if (!connections[id]) {
- connections[id] = function() {
- var uid = (1+Math.random()*4294967295).toString(16);
- var client = mqtt.createClient(port,broker);
- client.uid = uid;
- client.setMaxListeners(0);
- var options = {keepalive:15};
- options.clientId = clientid || 'mqtt_' + (1+Math.random()*4294967295).toString(16);
- options.username = username;
- options.password = password;
- options.will = will;
- var queue = [];
- var subscriptions = [];
- var connecting = false;
- var obj = {
- _instances: 0,
- publish: function(msg) {
- if (client.isConnected()) {
- client.publish(msg.topic,msg.payload,msg.qos,msg.retain);
- } else {
- if (!connecting) {
- connecting = true;
- client.connect(options);
- }
- queue.push(msg);
- }
- },
- subscribe: function(topic,qos,callback) {
- subscriptions.push({topic:topic,qos:qos,callback:callback});
- client.on('message',function(mtopic,mpayload,mqos,mretain) {
- if (matchTopic(topic,mtopic)) {
- callback(mtopic,mpayload,mqos,mretain);
- }
- });
- if (client.isConnected()) {
- client.subscribe(topic,qos);
- }
- },
- on: function(a,b){
- client.on(a,b);
- },
- once: function(a,b){
- client.once(a,b);
- },
- connect: function() {
- if (client && !client.isConnected() && !connecting) {
- connecting = true;
- client.connect(options);
- }
- },
- disconnect: function() {
- this._instances -= 1;
- if (this._instances == 0) {
- client.disconnect();
- client = null;
- delete connections[id];
- }
- }
- };
- client.on('connect',function() {
- if (client) {
- util.log('[mqtt] ['+uid+'] connected to broker tcp://'+broker+':'+port);
- connecting = false;
- for (var s in subscriptions) {
- var topic = subscriptions[s].topic;
- var qos = subscriptions[s].qos;
- var callback = subscriptions[s].callback;
- client.subscribe(topic,qos);
- }
- //console.log("connected - publishing",queue.length,"messages");
- while(queue.length) {
- var msg = queue.shift();
- //console.log(msg);
- client.publish(msg.topic,msg.payload,msg.qos,msg.retain);
- }
- }
- });
- client.on('connectionlost', function(err) {
- util.log('[mqtt] ['+uid+'] connection lost to broker tcp://'+broker+':'+port);
- connecting = false;
- setTimeout(function() {
- obj.connect();
- }, settings.mqttReconnectTime||5000);
- });
- client.on('disconnect', function() {
- connecting = false;
- util.log('[mqtt] ['+uid+'] disconnected from broker tcp://'+broker+':'+port);
- });
-
- return obj
- }();
- }
- connections[id]._instances += 1;
- return connections[id];
- }
-};