Struct VersionStamp 

pub struct VersionStamp {
    pub version: ValueVersion,
    pub epoch: ClusterEpoch,
    pub hlc: HybridLogicalClock,
}

Version stamp used by session watermarks.

Fields

version: ValueVersion

Monotonic value version.

epoch: ClusterEpoch

Authority epoch.

hlc: HybridLogicalClock

Hybrid logical timestamp.

Implementations

impl VersionStamp

pub const fn new( version: ValueVersion, epoch: ClusterEpoch, hlc: HybridLogicalClock, ) -> Self

Create a stamp.

pub fn covers(self, required: Self) -> bool

Return whether this stamp covers required.

pub fn version_distance_from(self, candidate: Self) -> u64

Conservative version-distance used by bounded staleness.

Trait Implementations

impl Clone for VersionStamp

fn clone(&self) -> VersionStamp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for VersionStamp

impl Debug for VersionStamp

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

Formats the value using the given formatter.

impl Default for VersionStamp

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for VersionStamp

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for VersionStamp

impl Hash for VersionStamp

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for VersionStamp

fn cmp(&self, other: &VersionStamp) -> 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 VersionStamp

fn eq(&self, other: &VersionStamp) -> 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 VersionStamp

fn partial_cmp(&self, other: &VersionStamp) -> 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 Serialize for VersionStamp

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for VersionStamp