Struct FanOutPolicy

Source

pub struct FanOutPolicy {
    pub per_item_timeout: Option<Duration>,
    pub cancel: Option<CancellationToken>,
}

Available on crate features worker-batch or worker-pool or worker only.

Expand description

Policy for AdaptiveWorkerPool::fan_out_async_with_policy.

The plain fan_out_async helper has no timeout or cancellation, and a single hung future stalls its whole chunk. At fleet scale, user code eventually passes a future that ignores deadlines, so reusable external-I/O fan-out needs a deadline + cancellation contract (Codex review 2026-06-03).

Fields§

§per_item_timeout: Option<Duration>

Per-item timeout. None = no timeout (caller must bound the future).

§cancel: Option<CancellationToken>

Cancellation token. When cancelled, no NEW items are spawned; in-flight items are still awaited. Remaining unspawned items report Cancelled.

FanOutPolicy

Struct FanOutPolicy Copy item path

Fields§

Trait Implementations§

impl Clone for FanOutPolicy

fn clone(&self) -> FanOutPolicy

fn clone_from(&mut self, source: &Self)

impl Debug for FanOutPolicy

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl Default for FanOutPolicy

fn default() -> FanOutPolicy

Auto Trait Implementations§

impl Freeze for FanOutPolicy

impl RefUnwindSafe for FanOutPolicy

impl Send for FanOutPolicy

impl Sync for FanOutPolicy

impl Unpin for FanOutPolicy

impl UnsafeUnpin for FanOutPolicy

impl UnwindSafe for FanOutPolicy

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> AnyExt for Twhere T: Any + ?Sized,

fn downcast_ref<T>(this: &Self) -> Option<&T>where T: Any,

fn downcast_mut<T>(this: &mut Self) -> Option<&mut T>where T: Any,

fn downcast_rc<T>(this: Rc<Self>) -> Result<Rc<T>, Rc<Self>>where T: Any,

fn downcast_arc<T>(this: Arc<Self>) -> Result<Arc<T>, Arc<Self>>where T: Any,

fn downcast_box<T>(this: Box<Self>) -> Result<Box<T>, Box<Self>>where T: Any,

fn downcast_move<T>(this: Self) -> Option<T>where T: Any, Self: Sized,

impl<T> AsDebug for Twhere T: Debug,

fn as_debug(&self) -> &dyn Debug

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DTwhere ST: ?Sized, DT: ?Sized,

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DTwhere ST: ?Sized, DT: ?Sized,

impl<T> CloneToUninit for Twhere T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

impl<T, X> CoerceTo<T> for Xwhere T: CoerceFrom<X> + ?Sized,

fn coerce_rc_to(self: Rc<X>) -> Rc<T>

fn coerce_box_to(self: Box<X>) -> Box<T>

fn coerce_ref_to(&self) -> &T

fn coerce_mut_to(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> FromRef<T> for Twhere T: Clone,

fn from_ref(input: &T) -> T

impl<T> FutureExt for T

fn with_context(self, otel_cx: Context) -> WithContext<Self>

fn with_current_context(self) -> WithContext<Self>

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self>

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>where F: FnOnce(&Self) -> bool,

impl<T> IntoRequest<T> for T

fn into_request(self) -> Request<T>

impl<L> LayerExt<L> for L

fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>where L: Layer<S>,

impl<D> OwoColorize for D

fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>where C: Color,

fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>where C: Color,

fn black(&self) -> FgColorDisplay<'_, Black, Self>

fn on_black(&self) -> BgColorDisplay<'_, Black, Self>

fn red(&self) -> FgColorDisplay<'_, Red, Self>

fn on_red(&self) -> BgColorDisplay<'_, Red, Self>

fn green(&self) -> FgColorDisplay<'_, Green, Self>

fn on_green(&self) -> BgColorDisplay<'_, Green, Self>

fn yellow(&self) -> FgColorDisplay<'_, Yellow, Self>

fn on_yellow(&self) -> BgColorDisplay<'_, Yellow, Self>

fn blue(&self) -> FgColorDisplay<'_, Blue, Self>

fn on_blue(&self) -> BgColorDisplay<'_, Blue, Self>

fn magenta(&self) -> FgColorDisplay<'_, Magenta, Self>

fn on_magenta(&self) -> BgColorDisplay<'_, Magenta, Self>

fn purple(&self) -> FgColorDisplay<'_, Magenta, Self>

fn on_purple(&self) -> BgColorDisplay<'_, Magenta, Self>

Struct FanOutPolicy

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> AnyExt for T
where T: Any + ?Sized,

fn downcast_ref<T>(this: &Self) -> Option<&T>
where T: Any,

fn downcast_mut<T>(this: &mut Self) -> Option<&mut T>
where T: Any,

fn downcast_rc<T>(this: Rc<Self>) -> Result<Rc<T>, Rc<Self>>
where T: Any,

fn downcast_arc<T>(this: Arc<Self>) -> Result<Arc<T>, Arc<Self>>
where T: Any,

fn downcast_box<T>(this: Box<Self>) -> Result<Box<T>, Box<Self>>
where T: Any,

fn downcast_move<T>(this: Self) -> Option<T>
where T: Any, Self: Sized,

impl<T> AsDebug for T
where T: Debug,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

impl<T, X> CoerceTo<T> for X
where T: CoerceFrom<X> + ?Sized,

impl<T> FromRef<T> for T
where T: Clone,

impl<T, U> Into<U> for T
where U: From<T>,

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>
where L: Layer<S>,

fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>
where C: Color,

fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>
where C: Color,

fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

fn on_color<Color>(&self, color: Color) -> BgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

impl<T> Paint for T
where T: ?Sized,