rama::layer::limit::policy

Struct ConcurrentCounter

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

The default ConcurrentTracker that uses a counter to track the concurrent requests.

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impl ConcurrentCounter

pub fn new(max: usize) -> ConcurrentCounter

Create a new concurrent counter with the given maximum limit.

Trait Implementations§

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impl Clone for ConcurrentCounter

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fn clone(&self) -> ConcurrentCounter

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl ConcurrentTracker for ConcurrentCounter

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type Guard = ConcurrentCounterGuard

The guard that is used to consume a resource and that is expected to release the resource when dropped.
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type Error = LimitReached

The error that is returned when the concurrent request limit is reached, which is also returned in case a used backoff failed.
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fn try_access( &self, ) -> Result<<ConcurrentCounter as ConcurrentTracker>::Guard, <ConcurrentCounter as ConcurrentTracker>::Error>

Try to access the resource, returning a guard if successful, or an error if the limit is reached. Read more
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impl Debug for ConcurrentCounter

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

Formats the value using the given formatter. Read more

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impl<T> Any for T
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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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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
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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
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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

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where Self: UpperHex,

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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FutureExt 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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Calls U::from(self).

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

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

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where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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const ALIGN: usize = _

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type Init = T

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unsafe fn drop(ptr: usize)

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

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fn and<S, P, B, E>(self, other: P) -> And<T, P>
where T: Policy<S, B, E>, P: Policy<S, B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<S, P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<S, B, E>, P: Policy<S, B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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type Output = T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

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Mutable access to a value. Read more
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where Self: Borrow<B>, B: ?Sized,

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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
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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)

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type Error = Infallible

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Performs the conversion.
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