dmccloskey commented on PR #660:
URL:
https://github.com/apache/arrow-rs-object-store/pull/660#issuecomment-4068705468
> I don't usually work at the poll_next level; it's much too confusing for
90% of work that you can get done with higher level constructs.
I agree 💯😄
> That said, I think you might want your stream to itself have a 'static
lifetime
Sorry the `'a` lifetimes were a typo on my side.
```
pub struct MyStream {
pub store: Option<Arc<dyn ObjectStore>>,
pub path: Option<Path>,
pub state: Option<Pin<Box<dyn Future<Output = Result<GetResult,
object_store::Error>> + Send + 'static>>>
...
}
impl Stream for MyStream {
type Item = Result<Bytes>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) ->
Poll<Option<Self::Item>> {
...
let store = self.store.as_ref().unwrap().clone();
let path = self.path.clone();
let fut = Box::pin( store.get(&path));
^^^^"...cannot outlive `static...."
self.state.replace(fut);
self.poll_next(cx)
...
}
}
```
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