Struct Observation

pub struct Observation { /* private fields */ }

An exact durable owner record adopted after a successful outer transaction.

This records the owner, revision, and persisted duration observed together, plus the caller-clock instant at which that result was adopted. It is valid for takeover timing only while a later poll finds the same durable record.

Implementations

impl Observation

pub fn owner(&self) -> &ParticipantId

Returns the owner in the exact durable record this caller observed.

pub fn rank(&self) -> Rank

Returns the exact observed durable revision as a fencing rank.

A changed rank makes this observation ineligible to authorize a takeover, even if the owner text is unchanged.

pub fn lease_duration(&self) -> Duration

Returns the lease duration persisted with the observed revision.

Followers use this value, rather than a handle’s configured duration, when deciding whether the unchanged record is old enough to challenge.

pub fn first_observed_at(&self) -> Duration

Returns the caller-clock time when this observation was adopted.

Compare it only with readings from the same caller’s monotonic clock. It is not a durable timestamp or a deadline for the observed owner.

Trait Implementations

impl Clone for Observation

fn clone(&self) -> Observation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Observation

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

Formats the value using the given formatter.

impl PartialEq for Observation

fn eq(&self, other: &Observation) -> 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 Eq for Observation

impl StructuralPartialEq for Observation