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RateLimitBySkipping

zebra_network::peer_set::candidate_set::rate_limit

Struct RateLimitBySkipping 

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pub struct RateLimitBySkipping<S> {
    inner: S,
    interval: Duration,
    next_allowed: Arc<Mutex<Option<Instant>>>,
}
Expand description

A middleware that limits how often the inner service is called.

While the rate limit applies, calls are skipped: they immediately return S::Response::default(), without calling the inner service or consuming any rate-limit budget.

The limit is claimed for as long as a call is running, so concurrent calls are skipped however long that call takes, and recharged when it finishes, so the interval runs from the end of one call to the start of the next.

Clones share one rate limit, so only clone this around clones of one inner service — around distinct services it would limit them as if they were one.

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§inner: S

The rate-limited inner service.

§interval: Duration

The minimum interval between inner calls.

§next_allowed: Arc<Mutex<Option<Instant>>>

The next time the inner service is allowed to be called, shared between clones of this middleware.

None while a call is in flight, so calls are skipped until it finishes, even if it runs for longer than interval.

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impl<S> RateLimitBySkipping<S>

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pub fn new(inner: S, interval: Duration) -> Self

Returns a new RateLimitBySkipping wrapping inner, limiting calls to one per interval.

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impl<S: Clone> Clone for RateLimitBySkipping<S>

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fn clone(&self) -> RateLimitBySkipping<S>

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<S: Debug> Debug for RateLimitBySkipping<S>

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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<S, Request> Service<Request> for RateLimitBySkipping<S>
where S: Service<Request>, S::Response: Default + Send + 'static, S::Future: Send + 'static, S::Error: Send + 'static,

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type Response = <S as Service<Request>>::Response

Responses given by the service.
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type Error = <S as Service<Request>>::Error

Errors produced by the service.
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type Future = Pin<Box<dyn Future<Output = Result<<S as Service<Request>>::Response, <S as Service<Request>>::Error>> + Send>>

The future response value.
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fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>

Returns Poll::Ready(Ok(())) when the service is able to process requests. Read more
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fn call(&mut self, request: Request) -> Self::Future

Process the request and return the response asynchronously. Read more

Auto Trait Implementations§

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impl<S> Freeze for RateLimitBySkipping<S>
where S: Freeze,

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impl<S> RefUnwindSafe for RateLimitBySkipping<S>
where S: RefUnwindSafe,

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impl<S> Send for RateLimitBySkipping<S>
where S: Send,

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impl<S> Sync for RateLimitBySkipping<S>
where S: Sync,

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impl<S> Unpin for RateLimitBySkipping<S>
where S: Unpin,

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impl<S> UnsafeUnpin for RateLimitBySkipping<S>
where S: UnsafeUnpin,

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impl<S> UnwindSafe for RateLimitBySkipping<S>
where S: UnwindSafe,

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🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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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
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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

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Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.