Hands-On Microservices with Node.js by Diogo Resende

Author:Diogo Resende
Language: eng
Format: epub
Tags: COM051260 - COMPUTERS / Programming Languages / JavaScript, COM060160 - COMPUTERS / Web / Web Programming, COM060080 - COMPUTERS / Web / General
Publisher: Packt Publishing
Published: 2018-07-04T06:03:32+00:00

rethinkdb.table("images").filter({

name : image

}).limit(1).run(db, (err, images) => {

if (err) return res.status(404).end();

images.toArray((err, images) => {

if (err) return res.status(500).end();

if (!images.length) return res.status(404).end();

req.image = images[0];

return next();

});

});

});

With this change, we can now restart our service and see whether our image exists:

We need to change the download just a little bit. We need to remove the previous query to update our usage date and replace it with a new one:

app.get("/uploads/:image", (req, res) => {

let image = sharp(req.image.data);

let width = +req.query.width;

let height = +req.query.height;

let blur = +req.query.blur;

let sharpen = +req.query.sharpen;

let greyscale = [ "y", "yes", "true", "1",

"on"].includes(req.query.greyscale);

let flip = [ "y", "yes", "true", "1",

"on"].includes(req.query.flip);

let flop = [ "y", "yes", "true", "1",

"on"].includes(req.query.flop);

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