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Choice

Enum Choice 

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pub enum Choice<L, R> {
    Left(L),
    Right(R),
}
Expand description

One of two hook implementations, chosen when the server is configured: a local default or a remote adapter. It implements each stage trait both sides do and forwards Authorizer::is_open and Admission::is_default, which the pipeline reads (an authority role refuses an open authorizer, and only the default admission carries the built-in quota).

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Left(L)

The first implementation.

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Right(R)

The second implementation.

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impl<L: Admission, R: Admission> Admission for Choice<L, R>

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fn is_default(&self) -> bool

Whether this is the default quota-only admission (D27).
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async fn admit( &self, input: &AdmissionInput<'_>, ) -> Result<AdmissionDecision, ServerError>

Decide whether a new write may proceed. Read more
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impl<L: Authorizer, R: Authorizer> Authorizer for Choice<L, R>

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fn is_open(&self) -> bool

Whether this is the open default, unsuitable as an authority source.
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async fn authorize(&self, op: &Operation) -> Result<AuthzFacts, ServerError>

Allow op with the facts established, or return the error to answer with.
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impl<L: Clone, R: Clone> Clone for Choice<L, R>

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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<L: Debug, R: Debug> Debug for Choice<L, R>

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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<L: OutcomeSink, R: OutcomeSink> OutcomeSink for Choice<L, R>

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async fn deliver(&self, outcome: &Outcome) -> Result<(), DeliveryError>

Deliver one terminal outcome. Every error leaves it queued for retry.
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async fn deliver_batch( &self, outcomes: &[Outcome], ) -> Vec<Result<(), DeliveryError>>

Deliver a batch sequentially by default; each result is independent.

Auto Trait Implementations§

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impl<L, R> Freeze for Choice<L, R>
where L: Freeze, R: Freeze,

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impl<L, R> RefUnwindSafe for Choice<L, R>

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impl<L, R> Send for Choice<L, R>
where L: Send, R: Send,

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impl<L, R> Sync for Choice<L, R>
where L: Sync, R: Sync,

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impl<L, R> Unpin for Choice<L, R>
where L: Unpin, R: Unpin,

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impl<L, R> UnsafeUnpin for Choice<L, R>
where L: UnsafeUnpin, R: UnsafeUnpin,

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impl<L, R> UnwindSafe for Choice<L, R>
where L: UnwindSafe, R: UnwindSafe,

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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> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> MaybeSend for T
where T: Send + ?Sized,

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impl<T> MaybeSync for T
where T: Sync + ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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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> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more