gistfile1.txt

logger.info(`enableGracefulShutdown ${config.enableGracefulShutdown}`);
// Setup use of the `@godaddy/terminus` module for graceful shutdown
if (config.enableGracefulShutdown) {
  let shuttingDown = false;
  // const shutdownLogger = newStyleLogger.child({
  //   component: 'graceful-shutdown'
  // });
  const check = () => {
    logger.info(`healthCheck ${shuttingDown ? 'down' : 'up'}`);
    shuttingDown ? Promise.reject('shutting down') : Promise.resolve('up');
  };
  const onSignal = () => {
    logger.info(`delay shutdown by ${config.gracefulShutdownDelay}`);
    shuttingDown = true;
  };
  const beforeShutdown = () => {
    logger.info('beforeShutdown invoked');
    // shutdownLogger.info('shutting down');
  };
  const errorLogger = message => {
    logger.info(`error ${message}`);
    // shutdownLogger.error(message);
  };
  const onShutdown = () => {
    logger.info('onShutdown');
    return new Promise(resolve => {
      setTimeout(resolve, config.gracefulShutdownDelay);
    });
    // shutdownLogger.info('shutdown complete');
  };

  const terminusOptions = {
    healthChecks: {
      '/health': check
    },
    logger: errorLogger,
    timeout: config.gracefulShutdownTimeout,
    signals: ['SIGTERM', 'SIGINT'],
    onSignal,
    onShutdown,
    beforeShutdown
  };
  createTerminus(httpServer, terminusOptions);