Right now we have

local_file_manager

, which basically returns an instance of

LocalFileManager

How could I merge the usage of

ConfigurableResource

and

LocalFileManager

? I've tried:

from typing import Any
from dagster import ConfigurableResource
from dagster._core.storage.file_manager import (
    LocalFileManager as DagsterLocalFileManager,
)

class LocalFileManager(ConfigurableResource, DagsterLocalFileManager):
    base_dir: str

    def __init__(self, **data: Any):
        ConfigurableResource.__init__(self, **data)
        DagsterLocalFileManager.__init__(self, self.base_dir)

But I get the following error:

TypeError: "LocalFileManager" is immutable and does not support item assignment

Hi Eduardo! Let me reach out to the team to see if they have an answer

hi @Eduardo Muñoz! In this case, you want a

ConfigurableResourceFactory

instead of a

ConfigurableResource

. The

ConfigurableResource

class is used when you're defining your own resource from scratch (so you can combine the configuration and the implementation) but when you want to use the config system to configure a pre-defined class, then you'll want the factory. That would look like

class LocalFileManagerResource(ConfiugrableResourceFactory[LocalFileManager]):
    base_dir: str
    
    def create_resource(self, _init_context) -> LocalFileManager:
        return LocalFileManager(self.base_dir)

Hey, Thanks! Looks great, I'll try that 🙂

Hey Eduardo - ran into the same issue today. I think the ConfigurableResourceFactory they're referring to is located here.

from dagster._config.pythonic_config import ConfigurableResourceFactory

thanks, ill give it a go!