Struct StakeLanePolicy 

pub struct StakeLanePolicy { /* private fields */ }

Stake-lane probe-acceptance policy (#757, ADR 003 §Admission and Priority). Reserves probe-hold headroom for stake-lane requesters — registered operators issuing node-to-node cache-miss probes — so end-client probe load cannot starve them under hold-budget pressure.

“Stake lane” is the CapacityBond.isActive predicate (registered + bond ≥ minBond + not unbonding + not ejected), resolved from the same chain-followed StakerSet the DHT handler consumes — no per-probe chain read and no new chain wiring (the issue’s constraint). It is a faithful binary reading of ADR 003’s bondOf >= bond_required(...) prioritization; finer capacity-scaled bond tiering is out of scope.

Construction is gated by the operator: the runtime only builds this when cache.stake_lane_reserved_holds > 0, so a single-lane deployment passes None and the handler skips the stake-lane check entirely.

Implementations

impl StakeLanePolicy

pub fn new( staker_set: Arc<dyn StakerSet>, reserved_holds: NonZeroUsize, max_holds: usize, ) -> Self

Build a policy. reserved_holds is NonZeroUsize so the “off” case (a zero reservation) cannot be constructed — callers encode it as None. max_holds is the configured max_probe_holds.

Trait Implementations

impl Clone for StakeLanePolicy

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StakeLanePolicy

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

Formats the value using the given formatter.