Google Analytics Api--getting data in batches in Node (using express)

getBatch.js

exports.AnalyticsDataBatchRequest = function(profileId, startDate, endDate, callback){

    
    var r1 = gapi.mainclient.analytics.data.ga.get({
      'ids': 'ga:' + profileId,
      'start-date': startDate,
      'end-date': endDate,
      'metrics': 'ga:pageviews'
      ,'dimensions': 'ga:source, ga:keyword, ga:pagePath'
    });


    var r2 = gapi.mainclient.analytics.data.ga.get({
      'ids': 'ga:' + profileId,
      'start-date': startDate,
      'end-date':endDate,
      'metrics': 'ga:pageviews'
      ,'dimensions': 'ga:source, ga:searchKeyword, ga:pagePath'
    });

    var r3 = gapi.mainclient.analytics.data.ga.get({
      'ids': 'ga:' + profileId,
      'start-date': startDate,
      'end-date':endDate,
      'metrics': 'ga:pageviews'
      ,'dimensions': 'ga:keyword, ga:source, ga:pagePath'
    });

    var r4 = gapi.mainclient.analytics.data.ga.get({
      'ids': 'ga:' + profileId,
      'start-date': startDate,
      'end-date':endDate,
      'metrics': 'ga:pageviews'
      ,'dimensions': 'ga:searchKeyword, ga:source, ga:pagePath'
    });

    var r5 = gapi.mainclient.analytics.data.ga.get({
      'ids': 'ga:' + profileId,
      'start-date': startDate,
      'end-date': endDate,
      'metrics': 'ga:visitors, ga:visits, ga:pageviews'
      ,'dimensions': 'ga:visitorType'
    });

    gapi.mainclient.newBatchRequest()
    .add(r1)
    .add(r2)
    .add(r3)
    .add(r4)
    .add(r5).withAuthClient(gapi.client).execute(function(err, result){
        if(err){
          var error = "Error while making batch query in AnalyticsDataBatchSingle"+err.toString();
          //console.log("AnalyticsDataBatchSingle", err);
          callback(error, null);
        } 
        else{
          callback(null, result);
        }    
    });  
}