changes

package.json

@@ -22,6 +22,7 @@
     "typescript": "^2.3.1"
   },
   "dependencies": {
+    "chalk-console": "^1.0.1",
     "commander": "^2.9.0",
     "mongodb": "^2.2.26",
     "mqtt": "^2.6.2",

src/main.ts

@@ -3,6 +3,8 @@ import * as Mongo from 'mongodb'
 import * as Queue from './queue'
 import * as MqttMessage from './mqtt_message'
 
+var console = require('chalk-console')
+
 
 var MQTT_BROKER_URL : String = 'mqtt://localhost'
 var MONGO_DATABASE_URL : String = 'mongodb://localhost/test'
@@ -24,34 +26,34 @@ var dbHandle : Mongo.Db;
 var dbReady : boolean = false;
 
 Mongo.MongoClient.connect(options['database'], 
-  { 
+{
   'server': {
-      'reconnectTries': 10000,
+    'reconnectTries': 5,
      'reconnectInterval': 1000,
      'socketOptions': {
        'autoReconnect': false
      }
    }  
-  })
+})
   .then(
     (tmpDbHandle: Mongo.Db) => { 
       dbHandle = tmpDbHandle
       dbReady = true; 
-      console.log("Connected to database")
-      dbHandle.on('error', () => { console.log("error on database") })
+      console.info("Connected to database")
+      dbHandle.on('error', () => { console.warn("Error on database") })
       dbHandle.on('reconnect', () => { 
-        console.log("reconnect on database") 
+        console.info("Reconnect on database") 
         dbReady = true
         queue.knock()
       })
-      dbHandle.on('timeout', () => { console.log("timeout on database") })
+      dbHandle.on('timeout', () => { console.warn("Timeout on database") })
       dbHandle.on('close', () => { 
-        console.log("close on database") 
+        console.info("Close on database") 
         dbReady = false
       })
     },
     (err: String) => {
-      console.log("Unable to connect to database: %s", err)
+      console.error("Unable to connect to database: %s", err)
       process.exit(1)
     }
 )
@@ -59,35 +61,40 @@ Mongo.MongoClient.connect(options['database'],
 
 var queue = new Queue.Queue<MqttMessage.MqttMessage>()
 queue.on('data', () => {
-  if (dbReady) {
+  if (dbReady || true) {  // FIXME
     while (! queue.isEmpty()) {
       var msg : MqttMessage.MqttMessage = queue.deq()
-      console.log("Something in the queue: %s", JSON.stringify(msg))
+      console.info(`Something in the queue: ${JSON.stringify(msg)}`)
       var coll = dbHandle.collection(options['collection'])
       coll.insertOne(msg.getMessage())
         .then(
           (r) => { 
-            console.log("successfully inserted into database")
+            console.success(`Successfully inserted into database ${JSON.stringify(msg.getMessage())}`)
           },
           (err) => { 
-            console.log("error when trying to insert into database")
+            console.error(`Error when trying to insert into database ${err}`)
+            if (! dbReady) {
+              console.info("Error occured while database connection is lost, re-enqueue msg.")
               queue.reenq(msg)
+            } else {
+              console.error(`Message ${JSON.stringify(msg.getMessage())} is lost`)
+            }
           }
         )
     }
   } else {
-    console.log("database currently not available, not reading from stream")
+    // console.info("Database currently not available, not reading from stream")
   }
 })
 
 
 var mqttClient = Mqtt.connect(options['broker'])
-mqttClient.on('offline', () => { console.log("mqtt client is offline") })
-mqttClient.on('reconnect', () => { console.log("mqtt client is reconnecting") })
-mqttClient.on('close', () => { console.log("mqtt connection closed") })
+mqttClient.on('offline', () => { console.warn("MQTT client is offline") })
+mqttClient.on('reconnect', () => { console.warn("MQTT client is reconnecting") })
+mqttClient.on('close', () => { console.warn("MQTT connection closed") })
 
 mqttClient.on('connect', () => {
-  console.log("mqtt client connected to broker")
+  console.info("Connected to MQTT broker")
   mqttClient.subscribe(options['topic'])
   mqttClient.subscribe('MqttMongo/Command')
   mqttClient.publish('MqttMongo/Status', 'hello, started up')
@@ -96,15 +103,20 @@ mqttClient.on('connect', () => {
 var msgCnt : number = 0
 mqttClient.on('message', (topic : string, message : string) => {
   msgCnt++;
-  console.log(`message received ${msgCnt}, topic ${topic}, payload ${message}`)
+  console.info(`Message received ${msgCnt}, topic ${topic}, payload ${message}`)
 
   if (topic == "MqttMongo/Command" && message == "shutdown") {
+    console.info("Shutting down MqttMongo")
     clearInterval(uptimeInterval)
     mqttClient.end()
     dbHandle.close()
   } else {
+    try {
       var mqttMessage = new MqttMessage.MqttMessage(topic, message)
       queue.enq(mqttMessage)
+    } catch (e) {
+      console.error(`Error while parsing Mqtt message, topic '${topic}', message '${message}' , ${e.toString()}`)
+    }
   }
 })
 
@@ -117,4 +129,4 @@ var uptimeInterval = setInterval(() => {
 
 
 
-console.log("MqttMongo started")
+console.info("MqttMongo started")

src/mqtt_message.ts

@@ -1,10 +1,20 @@
+export class MqttMessageError extends Error {
+  constructor(msg : string) {
+    super(msg)
+  }
+}
+
 export class MqttMessage {
   private topic : string
   private message : object
 
   constructor(topic : string, inMessage : string) {
     this.topic = topic
+    try {
       this.message = JSON.parse(inMessage)
+    } catch (e) {
+      throw new MqttMessageError(`error while parsing message, ${e.toString()}`)
+    } 
   }
 
   getTopic() : string {

src/queue.ts

@@ -23,7 +23,7 @@ export class Queue<T> extends Events.EventEmitter {
 
   reenq(x : T) {
     this.q.unshift(x)
-    this.emit('data')
+    // this.emit('data')
   }
 
   deq() : T {

src/unide.ts

@@ -0,0 +1,59 @@
+/*
+* content-spec
+* device
+  * deviceID
+  * operationalStatus
+  * metaData
+* part
+  * partTypeID
+  * partID
+  * result
+  * code
+  * metaData
+* measurements
+  * ts
+  * result
+  * code
+  * series
+    * $_time
+    * <variable>
+  * limits
+    * <variable>
+      * upperError
+      * lowerError
+      * upperWarn
+      * lowerWarn
+*/
+
+class Device {
+  private deviceID : string
+  private operationalStatus: string
+  private metaData: object
+}
+
+enum Result {
+  NOK,
+  OK,
+  UNKNOWN
+}
+
+class Part {
+  private partTypeID : string
+  private partID : string
+  private result : Result 
+  private code : string
+  private metaData : object
+}
+
+class Measurement {
+  private ts : string
+  private result : Result
+  private code : string
+  
+}
+class MeasurementPayload {
+  private contentSpec : string = 'urn:spec://eclipse.org/unide/measurement-message#v2'
+  private device : Device
+  private part : Part
+  private measurements : Measurement[]
+}