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@tiangolo can you take a look here, please? It's a minor bugfix, but it's important for my project.

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@tiangolo can you take a look here, please? It's a minor bugfix, but it's important for my project.

This is not minor, and ideally we'd like this to live in Starlette.

@Kludex maybe, but how we can move it to Starlette ifinclude_router is theFastAPI-level method? Do you suggest move the method to Starlette?

This will require a lot of work in bothFastAPI andStarlette, since none of theFastAPI methods usessuper().add_route() fromStarlette. Therefore, it is necessary to rewrite all the methodsadd_api_route,add_websocket_route,add_api_websocket_route to use the parent methods of Starlette. It will also require a consistent update of these two packages. It seems to me that this is too difficult way, but I will do it. Perhaps it makes sense to merge the current PR for now before we can make a more elegant solution.

@Kludex, so can you check aStarlettePR?

This is not minor, and ideally we'd like this to live in Starlette.

@Kludex this bug doesn't onStarlette side and not connected with thisIssue or thisStarlettePR orIssue.

It should be fixed inFastAPI cuz we have noStarlette calls insideinclude_router method. It doesn't useStarletteHost orMount that can be nested atStarlette side, but copies all included router attributes toapp.router directly. So, we should merge the incuded lifespan here too.

So can you review and approve this PR?

Starlette should support running the lifespan of other routers... It shouldn't be here.

Starlette should support running the lifespan of other routers... It shouldn't be here.

But there noother routers. We have the originalapp.router and copy all routes of included router to it. What do you want to do with it?

@Kludex just take a look atFastAPI original codehere

AFastAPI application works with an only one original router (if we didn't useapp.mount to mount another FastAPI application). So how we can useStarlette lifespan resolving logic here?

+1

+1)

+1

Wait for fix

+1

@tiangolo can we have a minute of your time here?

I am sorry to annoy you, but it is 14 months since PR is opened. Can we, as a community, have a decision or plan?

@svlandeg@estebanx64@alejsdev Hello, team! Sorry for such annoyiment, but we are still waiting for any decision about this PR.

FastAPI now has an obvious bug / weaknesses. And we have the PR fixing it.

I know, that this thing should be fixed in the future according to Roadmap, but we are waiting year already for it. Have we any reason to not merge 10 lines of code if they fixing the problem already and we can remove them in the future as a part of Roamap feature scope?

+1

+1

Thank you for your contribution@Lancetnik! 🍰

Thanks everyone for the input. ☕

Thanks a lot for the help, as always,@Kludex 🙏 🙇

This will be available in FastAPI version0.112.2, released in the next few hours. 🎉

Thanks everyone for the patience. As this involved some internal changes, that means there's a bit of a higher chance it could break something else elsewhere (something we didn't expect and didn't account for), so I wanted to handle some other lower-impact issues and releases first.

Now I was finally able to sit a few hours dedicated just to this, read several parts of the ASGI spec again, ensure this would be the right way to handle things (e.g. what nested lifespan states should override which), etc.

Now, time to enjoy your new nested lifespans. 😎 ☕