validateS3Account.js

const AWS = require('aws-sdk');
const {
  S3_REGION: region,
  S3_BUCKET_NAME: Bucket,
  S3_ACCESS_KEY_ID: accessKeyId,
  S3_SECRET_ACCESS_KEY: secretAccessKey,
} = process.env;

AWS.config.update({
  region,
  accessKeyId,
  secretAccessKey,
});

const s3 = new AWS.S3();

const s3Wrapper = {
  upload: ({ name, buffer }) => {
    return new Promise((resolve, reject) => {
      const params = {
        Bucket,
        Key: name,
        Body: buffer,
        ContentType: 'image/png',
        ACL: 'public-read',
      };

      s3.upload(params, (err) => {
        if (err) {
          reject(err);
          return;
        }
        resolve();
      });
    });
  },

  remove: ({ name, buffer }) => {
    return new Promise((resolve, reject) => {
      const params = {
        Bucket,
        Key: name,
      };

      s3.deleteObject(params, (err) => {
        if (err) {
          reject(err);
          return;
        }
        resolve();
      });
    });
  },
};

async function validateS3Bucket() {
  try {
    console.log('Validating S3 account...')
    const rnd = Math.random().toString(36).slice(2);
    const name = `tmp-${rnd}`;
    const buffer = Buffer.from('', 'utf8');
    await s3Wrapper.upload({ name, buffer });
    await s3Wrapper.remove({ name });
    console.log('✓ S3 account okay');
  } catch (e) {
    console.log('Failed to upload test image to S3');
    throw e;
  }
}

validateS3Bucket();