webpagetest script

const WebPageTest = require('webpagetest');
const http = require('http');
const SDC = require('statsd-client'),
    sdc = new SDC({
        prefix: '<NOM_DU_SITE_OU_DE_LA_PAGE>.webpagetest',
        host: '<VOTRE_HOST_GRAPHITE>',
        port: 8125
    });

const wpt = new WebPageTest('www.webpagetest.org', '<VOTRE_API_KEY>');

wpt.runTest('<VOTRE_URL>', {location: 'ec2-eu-west-1:Chrome'}, (err, data) => {
    if (err) {
        console.error(err);
        return;
    }

    let jsonUrl = data.data.jsonUrl;
    let iterationNumber = 0;
    let stop = setInterval(function () {

        // 20 mins max
        if (iterationNumber > 600) {
            clearInterval(stop);

            return;
        }
        iterationNumber ++;

        http.get(jsonUrl, (resp) => {
            let rawData = '';

            // A chunk of data has been recieved.
            resp.on('data', (chunk) => {
                rawData += chunk;
            });

            // The whole response has been received. Print out the result.
            resp.on('end', () => {
                let response = JSON.parse(rawData);

                if (response.statusCode === 200) {
                    clearInterval(stop);

                    ['firstView', 'repeatView'].forEach((key) => {
                        sdc.gauge(key + '.first_paint', response.data.median[key].firstPaint);
                        sdc.gauge(key + '.fully_loaded', response.data.median[key].fullyLoaded);
                        sdc.gauge(key + '.bytes_out', response.data.median[key].bytesOut);
                        sdc.gauge(key + '.image_total', response.data.median[key].image_total);
                        sdc.gauge(key + '.load_time', response.data.median[key].loadTime);
                        sdc.gauge(key + '.speed_index', response.data.median[key].SpeedIndex);
                        sdc.gauge(key + '.cached', response.data.median[key].cached);
                        sdc.gauge(key + '.dom_interactive', response.data.median[key].domInteractive);
                        sdc.gauge(key + '.nb_domains', Object.keys(response.data.median[key].domains).length);
                        sdc.gauge(key + '.resources.html.size', response.data.median[key].breakdown.html.bytes);
                        sdc.gauge(key + '.resources.html.nb', response.data.median[key].breakdown.html.requests);
                        sdc.gauge(key + '.resources.css.size', response.data.median[key].breakdown.css.bytes);
                        sdc.gauge(key + '.resources.css.nb', response.data.median[key].breakdown.css.requests);
                        sdc.gauge(key + '.resources.js.size', response.data.median[key].breakdown.js.bytes);
                        sdc.gauge(key + '.resources.js.nb', response.data.median[key].breakdown.js.requests);
                        sdc.gauge(key + '.resources.image.size', response.data.median[key].breakdown.image.bytes);
                        sdc.gauge(key + '.resources.image.nb', response.data.median[key].breakdown.image.requests);
                    });
                }
            });

        }).on("error", (err) => {
            console.log("Error: " + err.message);
        });
    }, 2000);
});