feat: fastapi integration added.

[lbukr]

Implementation of fastapi server based

[dapper91]

I think it worth to define a fastapi app variable like:

app = jsonrpc_app.http_app

to be able to start it with fastapi dev or fastapi run command.

[lbukr]

A more useful example is

jsonrpc_app = integration.Application('/api/v1')
jsonrpc_app.add_methods(methods)

app = fastapi.FastAPI()
app.mount("/rpc", jsonrpc_app.http_app)

The same example is described in openapi + fastapi docs

[dapper91]

fastapi request is a generic type so inspect.isclass always returns False. We must check the origin of the type not the type itself:

def is_fastapi_request(idx: int, name: str, annotation: Optional[type[Any]], default: Optional[Any]) -> bool:
    if annotation is None:
        return False

    annotation_origin = typing.get_origin(annotation)
    return inspect.isclass(annotation_origin) and issubclass(annotation_origin, fastapi.Request)

[dapper91]

http request is not passed. Let's pass it with to make the example more fulfilling:

@methods.add(
    pass_context=True,
    metadata=[
        openapi.metadata(
            summary="Creates a user",
            tags=['users'],
            errors=[AlreadyExistsError],
        ),
    ],
)
def add_user(request: fastapi.Request[Mapping[str, Any]], user: UserIn) -> UserOut:
    """
    Creates a user.

    :param request: http request
    :param object user: user data
    :return object: registered user
    :raise AlreadyExistsError: user already exists
    """

[dapper91]

aiohttp 3.14 and aioresponses compatibility is broken pnuckowski/aioresponses#289