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Saga

Struct Saga 

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pub struct Saga<Input, Output, Ctx, Err> { /* private fields */ }
Expand description

A compiled saga ready for execution.

Sagas execute a sequence of steps, where each step’s output becomes the next step’s input. If any step fails, previously completed steps are compensated in reverse order (LIFO).

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impl<Input, Output, Ctx, Err> Saga<Input, Output, Ctx, Err>
where Input: Clone + Send + 'static, Output: Send + 'static, Err: Debug,

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pub fn execute(&self, ctx: &Ctx, input: Input) -> Result<Output, SagaError<Err>>

Execute the saga, returning the final output on success.

On failure, compensates all previously completed steps in reverse order.

§Errors

Returns SagaError::StepFailed if a step fails and all compensations succeed. Returns SagaError::CompensationFailed if a step fails and some compensations also fail.

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pub fn execute_with_audit( &self, ctx: &Ctx, input: Input, ) -> (Result<Output, SagaError<Err>>, SagaAuditLog)

Execute the saga and return both the result and an audit log.

The audit log tracks all step executions and compensations.

Auto Trait Implementations§

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impl<Input, Output, Ctx, Err> Freeze for Saga<Input, Output, Ctx, Err>

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impl<Input, Output, Ctx, Err> !RefUnwindSafe for Saga<Input, Output, Ctx, Err>

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impl<Input, Output, Ctx, Err> !Send for Saga<Input, Output, Ctx, Err>

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impl<Input, Output, Ctx, Err> !Sync for Saga<Input, Output, Ctx, Err>

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impl<Input, Output, Ctx, Err> Unpin for Saga<Input, Output, Ctx, Err>
where Input: Unpin, Output: Unpin,

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impl<Input, Output, Ctx, Err> UnsafeUnpin for Saga<Input, Output, Ctx, Err>

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impl<Input, Output, Ctx, Err> !UnwindSafe for Saga<Input, Output, Ctx, Err>

Blanket Implementations§

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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> 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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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

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.