Description
Hello,
I am trying to bind an interface to an async provider.
In the script I pasted below you will notice it is not strictly necessary to have an async provider, however I am trying to evaluate this library for a project that requires some async functions to instantiate connections, and I'm doing a sort of proof of concept.
I initially tried using inject.attr(IService) on the class attributes but an error suggested me to use autoparams instead off attr for async contexts:
So I switched to a custom constructor for the class to use autoparams on, but I get the following error
It seems the provider does not return the instance I need but the _AsyncGeneratorContextManager itself
This is the current script, it should run as is
import asyncio
from contextlib import asynccontextmanager
from typing import Protocol, Self, runtime_checkable
import inject
from inject import Binder
from pydantic import BaseModel
@runtime_checkable
class IService(Protocol):
async def do_stuff(self) -> None: ...
class PrintService:
async def do_stuff(self) -> None:
print("PrintService is doing stuff")
class MyClass(BaseModel):
service: IService
model_config = {"arbitrary_types_allowed": True}
async def execute(self) -> None:
await self.service.do_stuff()
@classmethod
@inject.autoparams()
def new(cls, service: IService) -> Self:
return cls(service=service)
@asynccontextmanager
async def provide_print_service():
yield PrintService()
def bootstrapper(binder: Binder):
binder.bind_to_provider(IService, provide_print_service)
inject.configure(bootstrapper)
async def main():
my_class = MyClass.new()
await my_class.execute()
asyncio.run(main())This is the list of the dependencies you need to run this script
- pydantic 2.10.4
- inject 5.2.1
Maybe I'm doing something wrong on my side, can you help me out?
If i need to provide more information please ask.
Thanks in advance!