[Feature Request] @nestjs/platform-fastify support Custom Log Level

[daimalou]

Is there an existing issue that is already proposing this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe it

I use fastify buildin logger, this logger is awesome, has builtin traceId feature and can access by request.log.info()

https://fastify.dev/docs/v4.28.x/Reference/Logging/

It works.

  const fastifyInstance = fastify({
    logger: true,
  });

  const app = await NestFactory.create<NestFastifyApplication>(
    AppModule,
    new FastifyAdapter(fastifyInstance),
    {
      logger: false,
    },
  );

But this logger log every request and response. I find a solution to close some route. But In Nest I can't find place to config.

solution:
fastify/fastify#2120
fastify/help#140
https://fastify.dev/docs/latest/Reference/Routes/#custom-log-level

Describe the solution you'd like

Give a config.

Teachability, documentation, adoption, migration strategy

None

What is the motivation / use case for changing the behavior?

None

[Tony133]

If I understand you correctly, you want to know how to use request.log.info(), with @nestjs/platform-fastify package ?

[daimalou]

@Tony133, I need a configuration in nest to close some route log.

like this fastify.register(require('./routes/your-route'), { logLevel: 'silent' })

[daimalou]

I found the key code. I'll try modifying it.
https://github.com/nestjs/nest/tree/master/packages/platform-fastify/decorators
https://github.com/nestjs/nest/blob/master/packages/platform-fastify/adapters/fastify-adapter.ts#L726