mqttArchiver/lib/mqtt/mqttClient.js

var mqtt = require('mqtt');
var logger = require('log4js').getLogger();

var EventEmitter = require('events');

var busEmitter = new EventEmitter();

var requestify = require('requestify');

var db = require('../server/db-connector').dbConnection;

var dbSave = require('../server/db-save')(db);

//var nano = require('nano')('http://martind2000:1V3D4m526i@localhost:5984');
var nano = require('nano')('http://localhost:5984');
var db_name = 'mqttarchive';
var dbCouch = nano.use(db_name);


function dataBuilder(obj) {
  'use strict';
  var now = new Date();
  var newObj = {device_type: 'mDot', evt_type: 'update', timestamp: {}, evt: {}};

  newObj.device_id = obj.topic.split('/')[4];

  newObj.evt = obj;
  newObj.timestamp['$date'] = now.getTime();

  return newObj;
}


function saveToDB(data) {
//  logger.debug('Inserting into couch...');
  // Logger.info(util.inspect(obj));
  dbCouch.insert(data, function(err, body, header) {
    if (err) {
      logger.error('Error inserting into couch');
      logger.error(err);
      return;
    }
  });
}

var doSendMessage = (obj) => {
  'use strict';
  requestify.post('http://localhost:3011/apiv2/message', obj)
  //requestify.post('http://mdotserver.mybluemix.net/apiv2/message', obj)
      .then(function(response) {
          // Get the response body
          // logger.debug(response.getBody());
      })
    .catch(function(e) {
      logger.error('doSendMessage',e);
    });
};


var doInsertEntry = (obj) => {
  //   Logger.info('sendSocket: ' + JSON.stringify(obj));

 // insertEntry(obj);

  dbSave.addNewEvent(obj)
    .then(function(d) {
      'use strict';
      //logger.info('Finished - Raw',d);
      saveToDB(obj);
      if (obj.type === 'mDot') {
        busEmitter.emit('sendMessage', obj);
      }
    })
    .catch(function(e) {
      'use strict';
      logger.error(e);
    });


};


var mqttClient = function() {
var count=0;
    var subscribeTopic;
    var orgId = 'qz0da4';
    var userName = 'a-qz0da4-dfwwdkmkzr';
    var address = '.messaging.internetofthings.ibmcloud.com';
    var appKey = '9txJEf3Cjy7hkSOvkv';

    //Var subscribeTopic = prefix + deviceId + '/evt/+/fmt/json';


    this.connected = false;

    var options = {
        keepalive: 10,
        clientId: 'a:' + orgId + ':' + Date.now(),
        username: userName,
        password: new Buffer(appKey),
      reconnectPeriod:1000,
      connectTimeout:30 * 1000

      };

    this.client = mqtt.connect('mqtt://' + orgId + address, options);

    this.client.on('connect', function() {
        connected = true;
        logger.info('Connected to ', address);
      }.bind(this));

  this.client.on('connected', function() {
                logger.debug('mqttConnect - doConnection - Connected');

              });
  this.client.on('close', function() {
    logger.warn('mqttConnect - Connection closed');
  });

  this.client.on('offline', function() {
    logger.warn('mqttConnect - OFFLINE!');
  });


  this.client.on('error', function(e) {
    logger.error('mqttConnect - error');
    logger.error(e);
  });

  this.client.on('reconnect', function() {
      logger.warn('mqttConnect - Attempting to reconnect...');

    });

  subscribeTopic = 'iot-2/type/+/id/+/evt/+/fmt/json';
  logger.info('Subscribing:', subscribeTopic);
  this.client.subscribe(subscribeTopic);

    this.client.on('message', function(topic, message) {

      var json = JSON.parse(message.toString());

      var topicArray = topic.split('/');
      json.topic = topic;
      json.type = topicArray[2];
      json.device = topicArray[4];
      json.event = topicArray[6];

      busEmitter.emit('saveData', json);
      count++;

    }.bind(this));

    busEmitter.on('saveData', doInsertEntry);
    busEmitter.on('sendMessage', doSendMessage);

  this.getCount = function() {
    'use strict';
    return count;
  }

  };



module.exports.mqttClient = mqttClient;