Enum WriteAdmission 

pub enum WriteAdmission {
    Admit,
    Reject,
}

Whether a write resolved at a past epoch may still commit (the migration write gate, docs/06 §2).

A write commits only if writes are currently allowed (Phase::Cutover blocks them) and the partition’s epoch is unchanged since the decision was resolved. Because a partition’s epoch advances only on its own transitions, epoch equality is a per-partition staleness check; the cutover gate covers the one window where an up-to-epoch write must still be held.

Variants

Admit

The write may commit: writes are open and the epoch is current.

Reject

The write must be rejected and retried: the partition advanced since the decision was resolved, or it is in the cutover window. Retryable.

Trait Implementations

impl Clone for WriteAdmission

fn clone(&self) -> WriteAdmission

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WriteAdmission

impl Debug for WriteAdmission

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

Formats the value using the given formatter.

impl Eq for WriteAdmission

impl PartialEq for WriteAdmission

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for WriteAdmission