Struct StableShardRouter 

pub struct StableShardRouter { /* private fields */ }

Router over a fixed virtual space with a tunable active prefix (Tier 2).

Implementations

impl StableShardRouter

pub fn new(active_count: u32) -> Self

Active virtual shard count in [1, MAX_VIRTUAL_SHARDS].

pub fn active_count(&self) -> u32

Number of virtual shards currently accepting keyed traffic.

pub fn shard_for(&self, key: &[u8]) -> Option<ShardId>

Virtual shard for key, or None when the key lands outside the active prefix.

pub fn activate_shards( &mut self, new_active: u32, ) -> Result<StableShardActivationPlan, StableShardActivationError>

Grow the active prefix without remapping keys already in [0, from).

Errors

Same rules as plan_stable_shard_activation.

Trait Implementations

impl Clone for StableShardRouter

fn clone(&self) -> StableShardRouter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StableShardRouter

impl Debug for StableShardRouter

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

Formats the value using the given formatter.

impl Eq for StableShardRouter

impl PartialEq for StableShardRouter

fn eq(&self, other: &StableShardRouter) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for StableShardRouter