Struct ClusterMember 

pub struct ClusterMember { /* private fields */ }

One authorized cluster member.

The NodeIdentity is the member’s stable cluster identity — the same validated X.509 subject it authenticates and votes under. owned_range_count is the per-range role count, kept deliberately separate: a member’s cluster identity does not change when ranges move on or off it, and a freshly joined data member starts at zero.

Implementations

impl ClusterMember

pub fn joined_empty(identity: NodeIdentity, kind: MemberKind) -> ClusterMember

A member as it exists immediately after a successful join: authorized, Active, of the granted kind, and holding no user ranges. Ranges are only assigned later by rebalancing or ownership transitions.

pub fn identity(&self) -> &NodeIdentity

pub fn kind(&self) -> MemberKind

pub fn state(&self) -> MemberState

This member’s lifecycle state (Active or Draining).

pub fn is_draining(&self) -> bool

Is this member draining (marked for planned removal)?

pub fn begin_drain(&mut self) -> bool

Mark this member draining. Idempotent: re-marking a draining member is a no-op. Returns whether the state changed (false if it was already draining), so a caller can tell a fresh drain from a repeated request.

pub fn is_placement_eligible(&self) -> bool

Whether this member may receive new range placements: only an active data member can. A witness never holds user data, and a draining member is being emptied, so neither is a placement target.

pub fn owned_range_count(&self) -> usize

How many user ranges this member currently owns. Distinct from cluster membership: a member with zero ranges is still a full member.

pub fn holds_user_ranges(&self) -> bool

Does this member currently hold any user ranges? A just-joined member answers false until the rebalancer assigns ownership.

pub fn assign_ranges(&mut self, count: usize)

Record that the rebalancer/ownership transitions have assigned this many user ranges to the member. This is the only path that gives a member ranges — join never does.

Trait Implementations

impl Clone for ClusterMember

fn clone(&self) -> ClusterMember

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ClusterMember

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

Formats the value using the given formatter.

impl Eq for ClusterMember

impl PartialEq for ClusterMember

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