router.get('/dbchanges', function (req, res) {
 this.couchdbEvents = new CouchdbChangeEvents({
    lastEventId : seq,
    database: 'lookupfetchtest',
    host: '192.168.50.555',
    port:'5984',
    user: 'prabu',
    password: 'prabu',
    protocol : 'http',
    view: "listener_filter/listener_filter",
    limit: 1
 });

  this.couchdbEvents.on('data', (data) => {
    console.log('===========> data', data);
    seq = data['seq']
  })})