Struct PruningState 

pub struct PruningState {
    pub markers: BTreeMap<String, PruningPhase>,
}

State carried alongside a CRDT entry — maps each removed node to its pruning phase. Per, the map’s keys are the addresses that have left the cluster.

Fields

markers: BTreeMap<String, PruningPhase>

Implementations

impl PruningState

pub fn new() -> Self

pub fn initialize(&mut self, removed_node: String, owner: String)

Announce that removed_node is being pruned, with owner taking over. No-op if a marker for removed_node already exists in any phase.

pub fn mark_performed(&mut self, removed_node: &str, obsolete_at: u64) -> bool

Mark that pruning of removed_node has been observed everywhere; the marker can be aged out at obsolete_at. Returns true if the phase advanced from Initialized → Performed.

pub fn is_pruned(&self, removed_node: &str) -> bool

True if removed_node is currently being pruned.

pub fn owner(&self, removed_node: &str) -> Option<&str>

Return the owner that has taken over removed_node, if any.

pub fn gc(&mut self, current_round: u64) -> usize

Discard pruning markers whose obsolete_at is ≤ current_round. Returns the number of markers removed.

pub fn merge(&mut self, other: &Self)

Merge other into self. Performed wins over Initialized when the same node is referenced; latest obsolete_at wins among two Performed entries.

Trait Implementations

impl Clone for PruningState

fn clone(&self) -> PruningState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PruningState

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

Formats the value using the given formatter.

impl Default for PruningState

fn default() -> PruningState

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PruningState

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PruningState

fn eq(&self, other: &PruningState) -> 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 Serialize for PruningState

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for PruningState

impl StructuralPartialEq for PruningState