Struct OwnershipLease 

pub struct OwnershipLease { /* private fields */ }

Time-bounded write authority for one range owner, issued under a Supervisor term and ownership epoch.

A lease is the owner’s positive permission to take durable writes. It is per-range (it names its CollectionId + RangeId), bound to the owner it was issued to, and valid only on the [granted_at_ms, expires_at_ms) window and only while the Supervisor term and ownership epoch it carries still match the live cluster. The owner re-validates it on every durable write through LeasedOwner::evaluate; once any binding no longer holds, the owner self-fences.

Implementations

impl OwnershipLease

pub fn grant( supervisor_term: SupervisorTerm, collection: CollectionId, range_id: RangeId, owner: NodeIdentity, epoch: OwnershipEpoch, granted_at_ms: u64, ttl_ms: u64, ) -> OwnershipLease

Grant a lease valid for ttl_ms from granted_at_ms, under supervisor_term and ownership epoch, for owner’s authority over (collection, range_id).

pub fn supervisor_term(&self) -> SupervisorTerm

pub fn collection(&self) -> &CollectionId

pub fn range_id(&self) -> RangeId

pub fn owner(&self) -> &NodeIdentity

pub fn epoch(&self) -> OwnershipEpoch

pub fn granted_at_ms(&self) -> u64

pub fn expires_at_ms(&self) -> u64

pub fn is_expired(&self, now_ms: u64) -> bool

Has the lease’s validity window closed at now_ms? The window is half-open: the instant now_ms == expires_at_ms is already expired, so a lease never grants authority at or past its stated end.

pub fn remaining_ms(&self, now_ms: u64) -> u64

Milliseconds of authority left at now_ms, saturating to zero once expired. The owner’s keep-alive uses this to decide when to renew.

Trait Implementations

impl Clone for OwnershipLease

fn clone(&self) -> OwnershipLease

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OwnershipLease

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

Formats the value using the given formatter.

impl Eq for OwnershipLease

impl PartialEq for OwnershipLease

fn eq(&self, other: &OwnershipLease) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for OwnershipLease