Just getting started with a question.
In my project, I am utilizing NodeJS to interact with the Google Analytics Reporting API. I have successfully obtained the necessary OAuth 2 token and even receive a 200 response when querying the API. However, instead of receiving the expected JSON formatted report response, I am getting back an empty object as the payload.
var https = require('https');
var google = require('googleapis');
var key = require('/path/to/key');
var jwtClient = new google.auth.JWT(key.client_email, null, key.private_key, 'https://www.googleapis.com/auth/analytics.readonly', null);
var getGoogleData = google.analyticsreporting('v4');
var googleTemplates = {"reportRequests":[{"viewId": "######","dateRanges": [{"startDate": "2014-11-01", "endDate": "2014-11-30"}],"metrics": [{"expression": "ga:users"},{"expression": "ga:newUsers"},{"expression": "ga:pageviews / ga:sessions"}]},{"viewId": "######","dateRanges": [{"startDate": "2014-11-01", "endDate": "2014-11-30"}],"metrics": [{"expression": "ga:transactionRevenue"},{"expression": "ga:transactions"},{"expression":"ga:transactions / ga:sessions"},{"expression":"ga:revenuePerTransaction"}]}]};
var googleToken={};
var requestReport = function(reportRequest,token){
reportRequest = JSON.stringify(reportRequest);
var requestObject = {
method:'POST',
hostname:'analyticsreporting.googleapis.com',
path:'/v4/reports:batchGet',
headers:{
Accept:'*/*',
Authorization:'Bearer '+token.access_token,
'Content-Type':'application/x-www-form-urlencoded'
}
};
var callbackGoogle = function(response){
console.log('\n-----------------------\n');
console.log('Requesting Report : Google Analytics\nStatus Code: [', response.statusCode +': '+ response.statusMessage+']');
console.log('-----------------------\n\n');
var data = [];
response.on('data',function(chunk){
data.push(chunk);
});
response.on('end',function(){
var buff = new Buffer(data.join('')).toString();
console.log('////////////////////////// Success //////////////////////////\n')
console.log(buff);
});
response.on('error',function(e){
console.log(e);
});
};
var req = https.request(requestObject,callbackGoogle);
req.on('error',function(e){
console.log('requestReport Error:\n',e);
});
req.write(reportRequest);
req.end();
};
(function googleAccess(){
jwtClient.authorize(function(err,tokens){
console.log('\n-----------------------\n');
console.log('Authenticate: Google \n');
if(err){
console.log('Google Error',err);
return;
}
googleToken = tokens;
requestReport(googleTemplates,tokens);
console.log('Success: true');
console.log('\n-----------------------\n\n');
})
})();
The output on the console looks like this:
-----------------------
Authenticate: Google
Success: true
-----------------------
-----------------------
Requesting Report : Google Analytics
Status Code: [ 200: OK]
-----------------------
////////////////////////// Success //////////////////////////
{}
I'm puzzled as to why I'm only getting an empty object as the payload instead of the expected JSON report file. Any ideas on what might be causing this issue?