fabric-test.js

var fabric = require('fabric').fabric;
var fs = require('fs');

// A set of images that will be added on the canvas
var urls = [
    'https://processr-test.s3.amazonaws.com/uploads/309/1294/1038x.jpeg?AWSAccessKeyId=AKIAJFLYD6BOWFRPGKTQ&Expires=1753582685&Signature=zBtU4LRqYud%2Fu9XTwC%2FGNrZRFK0%3D',
    'https://processr-test.s3.amazonaws.com/uploads/307/1290/1038x.jpeg?AWSAccessKeyId=AKIAJFLYD6BOWFRPGKTQ&Expires=1753582663&Signature=jbEh5fyt0sd3mFXfi6eu66YdTvA%3D',
    'https://processr-test.s3.amazonaws.com/uploads/308/1292/1038x.jpeg?AWSAccessKeyId=AKIAJFLYD6BOWFRPGKTQ&Expires=1753582666&Signature=wppCeraGe9%2BS7Iykot%2F5GYhLSAY%3D',
    'https://processr-test.s3.amazonaws.com/uploads/310/1296/1038x.jpeg?AWSAccessKeyId=AKIAJFLYD6BOWFRPGKTQ&Expires=1753582686&Signature=D%2BTU0opwt%2B7QJS4CF%2BUuGq7GxKI%3D',
    'https://processr-test.s3.amazonaws.com/uploads/313/1302/1038x.jpeg?AWSAccessKeyId=AKIAJFLYD6BOWFRPGKTQ&Expires=1753582674&Signature=gyN25ZnEzuNKIXArLsBwtPwWris%3D',
    'https://processr-test.s3.amazonaws.com/uploads/311/1298/1038x.jpeg?AWSAccessKeyId=AKIAJFLYD6BOWFRPGKTQ&Expires=1753582670&Signature=Z2Zd0k6fy5lRxGV3WzZt4YiRTcM%3D',
    'https://processr-test.s3.amazonaws.com/uploads/312/1300/1038x.jpeg?AWSAccessKeyId=AKIAJFLYD6BOWFRPGKTQ&Expires=1753582715&Signature=bhYaQZ3YUneeUxS0cYttPfwZn%2FE%3D'
];

var createCanvas = function() {
    console.log('Creating canvas');

    // Get a simple canvas
    var canvas = fabric.createCanvasForNode(1000, 1000);

    // Add each image to the canvas
    urls.forEach(function(url) {
        fabric.Image.fromURL(url, function(oImg) {
            canvas.add(oImg);
        });
    });
};

// Create a new canvas every 10 seconds
setTimeout(createCanvas, 10000);
setTimeout(createCanvas, 20000);
setTimeout(createCanvas, 30000);
setTimeout(createCanvas, 40000);
setTimeout(createCanvas, 50000);
setTimeout(createCanvas, 60000);

// Keep feeding stuff into Node's queue so the process doesn't close once all the screenshots have
// been generated. This is useful to take heapdumps
setInterval(function() {
    console.log('Ping')

    // Garbage collect when ran with the --expose-gc flag
    if (global.gc) {
        global.gc();
    }
}, 1000);