Struct Priority2 

pub struct Priority2<QHi, QLo>
where
    QHi: Edge,
    QLo: Edge,
{ /* private fields */ }

Two-lane priority queue. The lanes store MessageToken values and the priority decision is made using the provided HeaderStore.

Implementations

impl<QHi, QLo> Priority2<QHi, QLo>

where QHi: Edge, QLo: Edge,

pub fn new(hi: QHi, lo: QLo) -> Self

Build a two-lane priority queue from hi/lo queues.

Trait Implementations

impl<QHi, QLo> Edge for Priority2<QHi, QLo>

where QHi: Edge, QLo: Edge,

fn try_push<H: HeaderStore>( &mut self, token: MessageToken, policy: &EdgePolicy, headers: &H, ) -> EnqueueResult

Attempt to push a token onto the queue using the given edge policy.

fn try_pop<H: HeaderStore>( &mut self, headers: &H, ) -> Result<MessageToken, QueueError>

Attempt to pop the front token from the queue.

fn occupancy(&self, policy: &EdgePolicy) -> EdgeOccupancy

Return a snapshot of occupancy used for telemetry and admission.

fn is_empty(&self) -> bool

Return true if the queue is empty.

fn try_peek(&self) -> Result<MessageToken, QueueError>

Peek at the front token without removing it.

fn try_peek_at(&self, index: usize) -> Result<MessageToken, QueueError>

Peek at the token at logical position index from the front.

fn try_pop_batch<H: HeaderStore>( &mut self, policy: &BatchingPolicy, headers: &H, ) -> Result<BatchView<'_, MessageToken>, QueueError>

Pop a batch of tokens according to the provided batching policy.

fn peek_header<'h, H: HeaderStore>( &self, headers: &'h H, ) -> Result<<H as HeaderStore>::HeaderGuard<'h>, QueueError>

Peek the front message header via HeaderStore (convenience).

fn get_admission_decision<H: HeaderStore>( &self, policy: &EdgePolicy, token: MessageToken, headers: &H, ) -> AdmissionDecision

Return an AdmissionDecision for the given token according to policy and the current occupancy snapshot.

fn get_admission_decision_from_message<P: Payload>( &self, policy: &EdgePolicy, message: &Message<P>, ) -> AdmissionDecision

Return an AdmissionDecision for the given token according to policy and the current occupancy snapshot.