Struct SlotMap 

pub struct SlotMap { /* private fields */ }

Maps each of the 16384 slots to a node ID.

When a slot is None, it means the slot is not assigned to any node, which indicates an incomplete cluster configuration.

Implementations

impl SlotMap

pub fn new() -> Self

Creates an empty slot map with no assignments.

pub fn single_node(node: NodeId) -> Self

Creates a slot map with all slots assigned to a single node.

Useful for single-node clusters.

pub fn owner(&self, slot: u16) -> Option<NodeId>

Returns the node that owns the given slot, if assigned.

pub fn assign(&mut self, slot: u16, node: NodeId)

Assigns a slot to a node.

pub fn assign_range(&mut self, range: SlotRange, node: NodeId)

Assigns a range of slots to a node.

pub fn unassign(&mut self, slot: u16)

Clears the assignment for a slot.

pub fn is_complete(&self) -> bool

Returns true if all slots are assigned to some node.

pub fn unassigned_count(&self) -> usize

Returns the number of unassigned slots.

pub fn slots_for_node(&self, node: NodeId) -> Vec<SlotRange>

Returns all slots owned by a specific node as a list of ranges.

Consecutive slots are merged into ranges for compact representation.

pub fn slot_counts(&self) -> HashMap<NodeId, usize>

Returns a count of slots per node.

Trait Implementations

impl Clone for SlotMap

fn clone(&self) -> SlotMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SlotMap

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

Formats the value using the given formatter.

impl Default for SlotMap

fn default() -> Self

Returns the “default value” for a type.