https://stackoverflow.com/questions/22990276
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I have finally managed to find a solution to this problem!!! Here is the solution :)
This is assuming you already have a Google analytics account which has site data such as views and have the request and googleapis modules installed.
First you need to create a Google console account at console.developers.google.com.
At Google console:
- Create a project with a suitable name e.g. dashboard1.
- Open up API's & Auth from the left menu -> open up API's tab -> turn on the analytics API.
- Open up the credentials tab -> create new client id -> select service account
- A key should automatically download -> click on the key and follow the instructions -> the default password is "notasecret" -> it will then output a .pem file
- The service account will have an email address e.g. 123434234324f34f5fd4ww5f@developer.gserviceaccount.com
Now go to your Google analytics account at www.google.com/analytics:
- Follow the steps at https://support.google.com/analytics/answer/1009702?hl=en
- Then add the email address from your service account.
In the dashboard job (server side using nodejs):
Use this code:
var fs = require('fs'),
crypto = require('crypto'),
request = require('request'); // This is an external module (https://github.com/mikeal/request)
var authHeader = {
'alg': 'RS256',
'typ': 'JWT'
},
authClaimSet = {
'iss': '#######SERVICE ACCOUNT EMAIL GOES HERE#######', // Service account email
'scope': 'https://www.googleapis.com/auth/analytics.readonly', // We MUST tell them we just want to read data
'aud': 'https://accounts.google.com/o/oauth2/token'
},
SIGNATURE_ALGORITHM = 'RSA-SHA256',
SIGNATURE_ENCODE_METHOD = 'base64',
GA_KEY_PATH = '#######DIRECTORY TO YOUR .PEM KEY#######', //finds current directory then appends private key to the directory
gaKey;
function urlEscape(source) {
return source.replace(/\+/g, '-').replace(/\//g, '_').replace(/\=+$/, '');
}
function base64Encode(obj) {
var encoded = new Buffer(JSON.stringify(obj), 'utf8').toString('base64');
return urlEscape(encoded);
}
function readPrivateKey() {
if (!gaKey) {
gaKey = fs.readFileSync(GA_KEY_PATH, 'utf8');
}
return gaKey;
}
var authorize = function(callback) {
var self = this,
now = parseInt(Date.now() / 1000, 10), // Google wants us to use seconds
cipher,
signatureInput,
signatureKey = readPrivateKey(),
signature,
jwt;
// Setup time values
authClaimSet.iat = now;
authClaimSet.exp = now + 60; // Token valid for one minute
// Setup JWT source
signatureInput = base64Encode(authHeader) + '.' + base64Encode(authClaimSet);
// Generate JWT
cipher = crypto.createSign('RSA-SHA256');
cipher.update(signatureInput);
signature = cipher.sign(signatureKey, 'base64');
jwt = signatureInput + '.' + urlEscape(signature);
// Send request to authorize this application
request({
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
},
uri: 'https://accounts.google.com/o/oauth2/token',
body: 'grant_type=' + escape('urn:ietf:params:oauth:grant-type:jwt-bearer') +
'&assertion=' + jwt
}, function(error, response, body) {
if (error) {
console.log(error);
callback(new Error(error));
} else {
var gaResult = JSON.parse(body);
if (gaResult.error) {
callback(new Error(gaResult.error));
} else {
callback(null, gaResult.access_token);
console.log(gaResult);
console.log("Authorized");
###########IF IT REACHES THIS STAGE THE ACCOUNT HAS BEEN AUTHORIZED##############
}
}
});
};
var request = require('request'),
qs = require('querystring');
authorize(function(err, token) {
if (!err) {
// Query the number of total visits for a month
############requestConfig################
var requestConfig = {
'ids': 'ga:#######PROJECT ID GOES HERE#######',
'dimensions': 'ga:country',
'metrics': 'ga:users',
'sort': '-ga:users',
'start-date': '2014-04-08',
'end-date': '2014-04-22',
'max-results': '10'
};
request({
method: 'GET',
headers: {
'Authorization': 'Bearer ' + token // Here is where we use the auth token
},
uri: 'https://www.googleapis.com/analytics/v3/data/ga?' + qs.stringify(requestConfig)
}, function(error, resp, body) {
console.log(body);
var data = JSON.parse(body);
console.log(data);
});
}
});
REMEMBER TO INPUT YOU'RE OWN SERVICE EMAIL ACCOUNT, GA_KEY_PATH AND IDS
You can Google analytics data by changing the requestConfig. I used this Google Analytics Query tool to help me: http://ga-dev-tools.appspot.com/explorer/
The data should then be outputted in the console.
Hope this helps :)
