Using rich with dictConfig for file logging

[astrochun]

I have a FastAPI application where I previously configured stdout and file logging using the python logging standard library. Here, I'm using YAML for configuration for both the application and uvicorn log. I'm now working on migrating this to use Rich.

I'm able to configure the console logs to use Rich. The YAML config looks something like this:

version: 1
disable_existing_loggers: false
formatters:
  precise:
    datefmt: "[%x %X]"
    (): 'uvicorn.logging.DefaultFormatter'
    fmt: '%(asctime)s %(name)-14s - %(levelprefix)s [%(module)s.%(funcName)s] %(message)s'
handlers:
  console:
    level: INFO
    class: rich.logging.RichHandler
    log_time_format: "[%x %X]"
    markup: True
    show_path: True
  file:
    level: DEBUG
    formatter: precise
    class: logging.handlers.TimedRotatingFileHandler
    when: 'W0'
    backupCount: 4
    filename: app.log
loggers:
  my-app:
    level: DEBUG
    handlers: [console, file]
    propagate: no

However, I wonder if there's a way to pass a Rich Formatter with TimedRotatingFileHandler as I do like rich text and would like for my log.*() to appear as it would be in the log (albeit rich color would not be available but at least emoji will be handled).

I know there's a way to specify a Console with file=open(...), but don't think rotating file is supported within Rich. Thus, I think replacing the formatter used in precise may be the best solution. Has anyone done this or know how?

[scorpion35]

Hi @astrochun , I just started using Rich, and looking for exactly this. Can you share the solution if you were able to figure it out. TIA