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RetrySchedule

Struct RetrySchedule 

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pub struct RetrySchedule { /* private fields */ }
Expand description

A validated retry schedule for retrying fallible user code locally.

Unlike named retry policies installed through super::set_retry_policy, this schedule is interpreted entirely by the component. It does not install a named policy or create a host-managed retry sequence. The loop is ordinary guest execution, so its host calls retain their normal durable replay and suspension behavior.

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impl RetrySchedule

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pub async fn retry<T, E, Operation>(&self, operation: Operation) -> Result<T, E>
where Operation: AsyncFnMut() -> Result<T, E>,

Runs an async operation until it succeeds or this schedule gives up.

Use Self::retry_with_properties when the schedule contains filtered predicates.

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pub async fn retry_with_properties<T, E, Operation, Properties, PropertyItems>( &self, operation: Operation, properties: Properties, ) -> Result<T, E>
where Operation: AsyncFnMut() -> Result<T, E>, Properties: FnMut(&E) -> PropertyItems, PropertyItems: IntoIterator<Item = (String, PredicateValue)>,

Runs an async operation with retry properties projected from each failure.

properties is evaluated after every failure, so predicates can react to the current error. When the schedule gives up, the most recent operation error is returned unchanged.

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impl Clone for RetrySchedule

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for RetrySchedule

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

Formats the value using the given formatter. Read more
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impl TryFrom<&RetryPolicy> for RetrySchedule

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type Error = RetryPolicyError

The type returned in the event of a conversion error.
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fn try_from(policy: &RetryPolicy) -> Result<Self, Self::Error>

Performs the conversion.

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Resource for T
where T: 'static,

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type Rep = Option<T>

The type which is actually stored in-memory for this resource. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> TupleOrUnit<()> for T

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fn into(self)