mqtt added

package.json

@@ -12,6 +12,7 @@
   "license": "ISC",
   "devDependencies": {
     "@types/commander": "^2.9.0",
+    "@types/mqtt": "0.0.34",
     "@types/node": "^7.0.14",
     "typescript": "^2.3.1"
   },

src/main.ts

@@ -1,18 +1,40 @@
+import * as Mqtt from 'mqtt'
 
 class MqttMongo {
+  private mqttClient : Mqtt.Client
+
   constructor() {
   }
 
   exec(): void {
-    console.log("Hello, %s", program['name'])
+    this.mqttClient = Mqtt.connect(options['broker'])
+    this.mqttClient.on('connect', () => {
+      console.log("connected to broker")
+      this.mqttClient.subscribe('MqttMongo/Command')
+      this.mqttClient.publish('MqttMongo/Status', 'hello, started up')
+    })
+    this.mqttClient.on('message', (topic : string, message : string) => {
+      console.log("message received")
+      console.log("topic %s", topic)
+      console.log("message %s", message)
+
+      if (topic == "MqttMongo/Command" && message == "shutdown") {
+        this.mqttClient.end()
+      }
+    })
+    this.mqttClient.on('close', () => {
+      console.log("bye bye")
+    })
+
+    console.log("Hello world")
   }
 }
 
 
-import program = require('commander')
-program
+import options = require('commander')
+options
   .version('0.0.1')
-  .option('-n, --name [name]', 'Name to greet', 'Wolfgang')
+  .option('-b, --broker [broker url]', 'Broker URL', 'mqtt://mqttbroker')
   .parse(process.argv)
 
 const mqttMongo = new MqttMongo()