On modularity & reusable ASGI components about responder HOT 2 CLOSED

I don't think we need to put too much focus on it, early on.

Sure. To me it's super important, because it's potentially the difference between "let's design monolithic frameworks that have to completely own the space to succeed" vs. "let's build a better ecosystem, throughout".

I think ASGI has a tremendous opportunity here to build a more collaborative ecosystem, and establish patterns whereby high-level frameworks are composed of nicely isolated units.

For example, if responder designs it's request and response models like so...

class Request:
    def __init__(self, scope, receive):
        ...

class Response
    def __init__(self, scope):
        ...

    async def __call__(self, receive, send):
        ...

Then they become nicely reusable in any ASGI app. You can drop all the way down to writing a simple "hello, world" ASGI application, without any of the rest of responder, but using a Responder request and/or response classes, and automatically getting it's content negotiated behavior etc.. as a result.

from responder.models import Request, Response

# I'm a standard ASGI app, you can run me directly with `daphne`, `uvicorn`, or `hypercorn`.
# You can test me with any standard ASGI TestClient.
# You can wrap me in middleware, or dispatch to me from any ASGI framework's routing.
class HelloWorld:
    def __init__(self, scope):
        self.scope = scope

    async def __call__(self, receive, send):
        request = Request(self.scope, receive)
        response = Response(self.scope)
        ...  # Do stuff
        await response(receive, send)

Working at those lower levels of abstraction isn't necessarily what most of us would be doing day-to-day, most of the time, but being able to is super important, and breaks down the "I need to understand how the complete framework functions in order to understand one of it's components"

I think it's important to start thinking about at least reasonably early on, otherwise you start introducing points of coupling that later become entrenched.

(I'll park these thoughts for now)

from responder.

I like this as a goal, but I don't think we need to put too much focus on it, early on.

from responder.