code: function push(type, packet) {
      let msg = { 'type': type != null ? 'results' : 'other',
          'value': type,
          'data': packet.data()
      };
      // emit unique event once the constraints request is done from the couchDB. returning results to client
      if (type === 'found' || type === 'notFound' || type === 'errorConstraints')
          packet.socket.emit('resultsConstraints', msg);
      if (type === 'success' || type === 'errorAddJob' || type === 'curlError')
          packet.socket.emit('addingResponse', msg);
      if (type === 'indexSuccess' || type === 'indexFailed')
          packet.socket.emit('indexationResponse', msg);
  }
docs: /* function push that return a message inside the socket connection to the client.
  @type : define the type of the event that occured inside the warehouse microservice
  @packet : accept the packet as second argument and retriev only the data