use an async context manager factory for lifespan#1227
use an async context manager factory for lifespan#1227graingert merged 8 commits intoKludex:masterfrom
Conversation
starlette/routing.py
Outdated
| return gen_wrapper | ||
|
|
||
|
|
||
| def _wrap_lifespan_context( |
There was a problem hiding this comment.
this stuff is a bit of a huge mess I think it's better to just make this a breaking change and make people add contextlib.asynccontextmanager to their functions
There was a problem hiding this comment.
@tomchristie are you happy for this to be a breaking change?
There was a problem hiding this comment.
Could you explain what would be necessary for a user to convert their existing lifespan generator to an asynccontextmanager? i.e. an example?
There was a problem hiding this comment.
You just add the @contextlib.asynccontextmanager decorator
There was a problem hiding this comment.
@JayH5 thank you so much for this comment! Because of this I worked out I could get rid of all my ugly _wrap_lifespan_context stuff and just use asynccontextmanager(lifespan_context)
|
Kinda sorta related (at least involves some similar code): #1205 |
JayH5
left a comment
JayH5
left a comment
There was a problem hiding this comment.
Was going to suggest updating the documentation, but now I see that we don't have docs for the generator lifespan stuff. It therefore seems likely to me that most users are using on_startup/on_shutdown, so the deprecation shouldn't affect too many.
Am happy with this PR and it's a nice clean up.
| elif inspect.isasyncgenfunction(lifespan): | ||
| warnings.warn( | ||
| "async generator function lifespans are deprecated, " | ||
| "use an @contextlib.asynccontextmanager function instead", |
There was a problem hiding this comment.
I now read this like it should be "a contextlib..."
| "use an @contextlib.asynccontextmanager function instead", | |
| "use a @contextlib.asynccontextmanager function instead", |
There was a problem hiding this comment.
I read this as an at contextlib.asynccontextmanager
3 participants
fixes #1138
special thanks to @JayH5 for: https://github.com/encode/starlette/pull/1205/files#diff-aca25e5f16c4fd49338ccdf3631f72455309335fee1e27f3d3b6016fa94ecedfR531-R538