[FEATURE REQUEST] Multiple Services in single ASGI app

[jeffsawatzky]

With gRPC you can add multiple servicers to the gRPC server. With the python connectrpc implementation, it seems like there is a 1-to-1 mapping of service-to-asgi app. How do we run multiple services in the same asgi server?

[jeffsawatzky]

Are we expected to use something like this:
https://github.com/graingert/asgi-dispatcher-middleware
And if so, is it possible to include an app dispatcher class as part of connect-python?

[anuraaga]

Hi @jeffsawatzky - there are already excellent routers such as starlette and we don't feel there's a good reason to reinvent the wheel (likely worse than them). We have an example here but probably need to get it into the docs since it is a common question.

#101

[jeffsawatzky]

The problem with relying on others is that I don't want to install all of starlette, or hypercorn, for one small middleware. Especially when I'm not going to use startlette or hypercorn. There is that one middleware above, but I'm hesitant on using something from a single person that hasn't been updated in 6 years.

[anuraaga]

If an extra dependency doesn't work, the no-dependencies approach from that discussion is also a good option.

Given how prominent Starlette is in the ASGI ecosystem, I think we will still recommend it for this use case. A nice feature is also opening up serving normal HTTP handlers along with the service, such as text metrics, health check, or I like hosting a debug page.

I don't think this precludes a small built-in router for the long term, but we would want to get back to it post a 1.0 release as it's not a core feature of RPC and there are some great alternatives.

[jeffsawatzky]

fair enough.