Hi, I'd like to use a custom logging formatter with Meltano. Is it possible to specify in the

logging.yml

a callable formatter that has been defined in a local python file? I'm not succeeding in doing so and have tried several different paths for the custom formatter. E.g i have a callable

factory

defined in a file

config_loader.py

which is in the same dir as the `logging.yml`:

version: 1
disable_existing_loggers: false

formatters:
  default:
    format: "%(message)s"
  custom:
   (): .config_loader.factory

handlers:
  console:
    class: logging.StreamHandler
    level: INFO
    formatter: custom
    stream: "<ext://sys.stderr>"

root:
  level: INFO
  propagate: yes
  handlers: [console]

According to the logging docs:

This is signalled by an absolute import path to the factory being made available under the special key

'()'

.

That means relative imports are not supported:

formatters:
  default:
    format: "%(message)s"
  custom:
   (): config_loader.factory

Also, you have to make your module available to the Python interpreter. You can do that with the

PYTHONPATH

variable. If

config_loader.py

and

logging.yml

are at the project root:

PYTYHONPATH=. meltano ...