changes, not yet working

package.json

@@ -24,6 +24,8 @@
   "dependencies": {
     "commander": "^2.9.0",
     "mongodb": "^2.2.26",
-    "mqtt": "^2.6.2"
+    "mqtt": "^2.6.2",
+    "queuejs": "^0.1.0",
+    "readable-stream": "^2.2.9"
   }
 }

src/main.ts

@@ -1,15 +1,24 @@
 import * as Mqtt from 'mqtt'
 import * as Mongo from 'mongodb'
-
+import * as Stream from 'stream'
 
 var MQTT_BROKER_URL : String = 'mqtt://localhost'
 var MONGO_DATABASE_URL : String = 'mongodb://localhost/test'
 
 
+class MqttStream extends Stream.Readable {
+  _read() {
+  }
+}
+
+
+
 class MqttMongo {
   private mqttClient : Mqtt.Client
   private dbHandle : Mongo.Db;
+  private dbReady : boolean = false;
   private msgCnt : number = 0;
+  private mqttStream : MqttStream
 
   constructor() {
     this.mqttClient = Mqtt.connect(options['broker'])
@@ -17,16 +26,59 @@ class MqttMongo {
     this.mqttClient.on('reconnect', () => { console.log("mqtt client is reconnecting") })
     this.mqttClient.on('close', () => { console.log("mqtt connection closed") })
 
-/*
+    Mongo.MongoClient.connect(options['database'], 
-    Mongo.MongoClient.connect(options['database'])
+      { 
+        'server': {
+          'reconnectTries': 10000,
+          'reconnectInterval': 1000,
+          'socketOptions': {
+            'autoReconnect': false
+          }
+        }  
+      })
       .then(
-        (dbHandle: Mongo.Db) => { this.dbHandle = dbHandle },
+        (dbHandle: Mongo.Db) => { 
+          this.dbHandle = dbHandle
+          this.dbReady = true; 
+          this.dbHandle.on('error', () => { console.log("error on database") })
+          this.dbHandle.on('reconnect', () => { 
+            console.log("reconnect on database") 
+            this.dbReady = true
+          })
+          this.dbHandle.on('timeout', () => { console.log("timeout on database") })
+          this.dbHandle.on('close', () => { 
+            console.log("close on database") 
+            this.dbReady = false
+          })
+        },
         (err: String) => {
           console.log("Unable to connect to database: %s", err)
           process.exit(1)
         }
     )
-*/
+
+    this.mqttStream = new MqttStream()
+    this.mqttStream.on('data', () => {
+      if (this.dbReady) {
+        var msg
+        while ((msg = this.mqttStream.read()) != null) {
+          console.log("Something on the stream: %s", msg)
+          var coll = this.dbHandle.collection('mqttMongo')
+          coll.insertOne({'a': msg})
+            .then(
+              (r) => { 
+                console.log("successfully inserted into database")
+              },
+              (err) => { 
+                console.log("error when trying to insert into database")
+              }
+            )
+        }
+      } else {
+        console.log("database currently not available, not reading from stream")
+      }
+    })
+
   }
 
   exec(): void {
@@ -43,8 +95,8 @@ class MqttMongo {
       if (topic == "MqttMongo/Command" && message == "shutdown") {
         this.mqttClient.end()
       } else {
-        // verify JSON format of message
+        this.mqttStream.push(`${topic}:${message}`)
-        // insert into database
+        this.mqttStream.emit('data')
       }
     })
   }