Struct TransitionRequest 

pub struct TransitionRequest { /* private fields */ }

A request to move ownership of one range. Carries the three-part CAS (expected owner / epoch / catalog version), the target candidate, the range commit watermark the candidate must cover, and the candidate’s catch-up evidence. Built with TransitionRequest::new; the replica set the new owner will carry defaults to empty and is set with with_replicas.

Implementations

impl TransitionRequest

pub fn new( kind: TransitionKind, collection: CollectionId, range_id: RangeId, expected_owner: NodeIdentity, expected_epoch: OwnershipEpoch, expected_version: CatalogVersion, target: NodeIdentity, watermark: CommitWatermark, ) -> TransitionRequest

A transition request with no safety evidence yet and an empty post-cutover replica set. Evidence must be attached with with_evidence before the transition can be admitted — a request without it fails closed (MissingSafetyEvidence).

pub fn with_evidence(self, evidence: CatchUpEvidence) -> TransitionRequest

Attach the candidate’s catch-up evidence for the safety gate.

pub fn with_replicas( self, replicas: impl IntoIterator<Item = NodeIdentity>, ) -> TransitionRequest

Set the replica set the new owner will carry after cutover. Defaults to empty. A handoff that demotes the old owner to a replica passes it here.

pub fn kind(&self) -> TransitionKind

pub fn collection(&self) -> &CollectionId

pub fn range_id(&self) -> RangeId

pub fn target(&self) -> &NodeIdentity

Trait Implementations

impl Clone for TransitionRequest

fn clone(&self) -> TransitionRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransitionRequest

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

Formats the value using the given formatter.

impl Eq for TransitionRequest

impl PartialEq for TransitionRequest

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