Struct FlapDetector 

pub struct FlapDetector<T: PartialEq> { /* private fields */ }

Flapping detector: decaying-penalty counter (BGP-damping style) over an observed value. record counts a transition whenever the value differs from the last observed one; the penalty decays with half_life_us and crossing threshold means flapping. Timestamps are raw microseconds (veilid-tools has no Timestamp type).

Implementations

impl<T: PartialEq> FlapDetector<T>

pub fn new(threshold: f64, half_life_us: u64) -> Self

Creates a detector that trips at threshold accumulated penalty, decaying by half every half_life_us.

pub fn new_secs(threshold: f64, half_life_secs: u64) -> Self

Convenience: half-life in whole seconds.

pub fn record(&mut self, now_us: u64, value: T) -> Option<f64>

Observe a value; counts a transition when it differs from the last. Returns Some(penalty) only on the transition that tips into flapping (re-arms after decay).

pub fn record_event(&mut self, now_us: u64) -> Option<f64>

Count a discrete flap event (e.g. a connection drop). Returns Some(penalty) only on the event that tips into flapping (re-arms after decay).

pub fn reset(&mut self)

Clear accumulated penalty and history. Use after a deliberate offline period (e.g. detach) so it isn’t counted as flapping; threshold/half-life are kept.

Trait Implementations

impl<T: Clone + PartialEq> Clone for FlapDetector<T>

fn clone(&self) -> FlapDetector<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + PartialEq> Debug for FlapDetector<T>

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

Formats the value using the given formatter.