var fUrl = event.fUrl + event.pid;
  if(event.fsUrl.indexOf('product') >-1){
    fUrl = fUrl + '.' + event.format
  }
  request({
    url: fUrl,
  }, function(error, response, body) {
      if(error){
        return callback(error);
      }else{
            return callback(null, response.body);
      }
  });