在NestJS微服务中公开普通端点

我用NestJs编写了这个微服务:

async function bootstrap() {
  const port = parseInt(process.env.PORT || '5000', 10);

  const app = await NestFactory.createMicroservice(ApplicationModule, {
    transport: Transport.TCP,
    options: { host: '0.0.0.0', port }
  });
  app.listen(() => console.log(`Microservice is listening on port ${port}`));
}
bootstrap();

/metrics 为了普罗米修斯。所以问题是如何使用NestJs微服务

从 this 我觉得这是不可能的。这是真的吗?如果是的话,我有没有办法?

Module({
  imports: [],
  controllers: [AppController],
  providers: [AppService, DBService],
})
export class ApplicationModule {
  configure(consumer: MiddlewareConsumer) {
    consumer
      .apply(MetricsMiddleware)
      .forRoutes('/metrics') // Also tried '*'
  }
}

但当我这么做的时候 curl http://localhost:5000/metrics 什么也没发生,中间件不被调用

@Injectable()
export class MetricsMiddleware implements NestMiddleware {
    constructor() {}

    use(req, res, next) {
        console.log('yes');
        next();
    }
}

更新: This issue 也无助于:(