How to upload an image to Google Cloud Storage from an image url in Node?

Question

Given an image url, how can I upload that image to Google Cloud Storage for image processing using Node.js?

Answer 1

To add onto Yevgen Safronov's answer, we can pipe the request into the write stream without explicitly downloading the image into the local file system.

const request = require('request');
const storage = require('@google-cloud/storage')();

function saveToStorage(attachmentUrl, bucketName, objectName) {
  const req = request(attachmentUrl);
  req.pause();
  req.on('response', res => {

    // Don't set up the pipe to the write stream unless the status is ok.
    // See https://stackoverflow.com/a/26163128/2669960 for details.
    if (res.statusCode !== 200) {
      return;
    }

    const writeStream = storage.bucket(bucketName).file(objectName)
      .createWriteStream({

        // Tweak the config options as desired.
        gzip: true,
        public: true,
        metadata: {
          contentType: res.headers['content-type']
        }
      });
    req.pipe(writeStream)
      .on('finish', () => console.log('saved'))
      .on('error', err => {
        writeStream.end();
        console.error(err);
      });

    // Resume only when the pipe is set up.
    req.resume();
  });
  req.on('error', err => console.error(err));
}