Generate a heapdump file for analysis

heapdump.js

router.post(
  '/heapdump-4E5AB3A6ECC24CD5B413A6D4DB5DB02FB4907018',
  auth(config.server.authToken),
  asyncHandler(async (req, res, next) => {
    const { logger } = dependencies;
    const hostname = os.hostname();
    const filepath = '/tmp/';
    const filename = `${Date.now()}.heapsnapshot`;
    try {
      heapdump.writeSnapshot(filepath + filename, err => {
        if (err) {
          throw err;
        }
        logger.info('Generated heapdump: ' + filename);

        const s3 = new S3();
        const upload = new S3.ManagedUpload({
          service: s3,
          params: {
            Bucket: 'engineering',
            Key: `heapdump/some-service/${hostname}/${filename}`,
            Body: fs.createReadStream(filepath + filename)
          }
        });
        upload.send(err => {
          if (err) {
            logger.error('Error uploading', { err });
            throw err;
          }
          logger.info(`Uploaded heapdump: ${filename}`);
          res.sendStatus(200);
        });
      });
    } catch (e) {
      logger.error(e);
      res.sendStatus(500);
    }
  })
);