Logging request/response in Nest.js

https://github.com/julien-sarazin/nest-playground/issues/1#issuecomment-682588094

You can use middleware for that.

import { Injectable, NestMiddleware, Logger } from '@nestjs/common';

import { Request, Response, NextFunction } from 'express';

@Injectable()
export class AppLoggerMiddleware implements NestMiddleware {
  private logger = new Logger('HTTP');

  use(request: Request, response: Response, next: NextFunction): void {
    const { ip, method, path: url } = request;
    const userAgent = request.get('user-agent') || '';

    response.on('close', () => {
      const { statusCode } = response;
      const contentLength = response.get('content-length');

      this.logger.log(
        `${method} ${url} ${statusCode} ${contentLength} - ${userAgent} ${ip}`
      );
    });

    next();
  }
}

and in the AppModule

export class AppModule implements NestModule {
  configure(consumer: MiddlewareConsumer): void {
    consumer.apply(AppLoggerMiddleware).forRoutes('*');
  }
}