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ObserverProgressTrackTransaction

Struct ObserverProgressTrackTransaction 

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

Ownership barrier between a validated registration and its durable append.

The aggregate is unreachable while the transaction is pending, so no recovery batch can plan an equal-epoch arm against a progress row whose durable append is not yet confirmed. Consuming Self::commit installs the new progress row — after the caller has confirmed the durable append — and consuming Self::abort returns the aggregate byte-for-byte unchanged, conversation still untracked, so a failed append never leaves a live progress row that durable state does not hold.

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impl ObserverProgressTrackTransaction

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pub const fn conversation_id(&self) -> ConversationId

Returns the conversation whose progress row the durable append writes.

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pub const fn observer_progress(&self) -> DeliverySeq

Returns the registered hard observer progress for the durable append.

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pub fn commit(self) -> ObserverRecoveryAggregate

Installs the registered progress row after a confirmed durable append.

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pub fn abort(self) -> ObserverRecoveryAggregate

Cancels a failed durable append; the conversation stays untracked.

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impl Debug for ObserverProgressTrackTransaction

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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 Eq for ObserverProgressTrackTransaction

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impl PartialEq for ObserverProgressTrackTransaction

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fn eq(&self, other: &ObserverProgressTrackTransaction) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for ObserverProgressTrackTransaction

Auto Trait 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.