Struct OwnershipEpoch 

pub struct OwnershipEpoch(/* private fields */);

Fencing epoch for a range’s write authority.

Distinct from CatalogVersion: the version advances on any catalog edit, but the epoch advances only when write authority moves (a new owner). A WAL/logical record stamped with an epoch older than the catalog’s current epoch is from a fenced old owner and must be rejected (ADR 0037, “fencing is enforced below routing”).

Implementations

impl OwnershipEpoch

pub fn initial() -> OwnershipEpoch

The epoch a range is created at.

pub fn value(self) -> u64

Trait Implementations

impl Clone for OwnershipEpoch

fn clone(&self) -> OwnershipEpoch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for OwnershipEpoch

impl Debug for OwnershipEpoch

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

Formats the value using the given formatter.

impl Display for OwnershipEpoch

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

Formats the value using the given formatter.

impl Eq for OwnershipEpoch

impl Ord for OwnershipEpoch

fn cmp(&self, other: &OwnershipEpoch) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for OwnershipEpoch

fn eq(&self, other: &OwnershipEpoch) -> 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 PartialOrd for OwnershipEpoch

fn partial_cmp(&self, other: &OwnershipEpoch) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for OwnershipEpoch