Struct ChangeRecord 

pub struct ChangeRecord {
    pub term: u64,
    pub lsn: u64,
    pub timestamp: u64,
    pub operation: ChangeOperation,
    pub collection: String,
    pub entity_id: u64,
    pub entity_kind: String,
    pub entity_bytes: Option<Vec<u8>>,
    pub metadata: Option<Value>,
    pub refresh_records: Option<Vec<Vec<u8>>>,
    pub range_id: Option<u64>,
    pub ownership_epoch: Option<u64>,
}

Fields

term: u64

lsn: u64

timestamp: u64

operation: ChangeOperation

collection: String

entity_id: u64

entity_kind: String

entity_bytes: Option<Vec<u8>>

metadata: Option<Value>

refresh_records: Option<Vec<Vec<u8>>>

range_id: Option<u64>

Issue #991 — stable identity of the range this user-data change belongs to (RangeId, from the #989 ownership catalog), or None for records that predate range replication. Carried so replicas and recovery can route a change to its range and gate it against that range’s authority watermark.

ownership_epoch: Option<u64>

Issue #991 — the owning range’s OwnershipEpoch at the moment this change was produced. The epoch bumps only when write authority moves to a new owner, so a record whose epoch is behind the target range’s accepted epoch is a write from a deposed owner and is fenced. None for legacy records and non-range-replicated changes.

Implementations

impl ChangeRecord

pub fn for_refresh( lsn: u64, timestamp: u64, collection: impl Into<String>, records: Vec<Vec<u8>>, ) -> Self

pub fn with_range_authority(self, range_id: u64, ownership_epoch: u64) -> Self

Stamp this record with the authority metadata of the range that owns it (issue #991): the stable range identity and the owner’s current ownership epoch. The term is set independently via Self::with_term.

pub fn to_json_value(&self) -> JsonValue

pub fn encode(&self) -> Vec<u8>

pub fn with_term(self, term: u64) -> Self

pub fn decode(bytes: &[u8]) -> Result<Self, String>

Trait Implementations

impl Clone for ChangeRecord

fn clone(&self) -> ChangeRecord

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChangeRecord

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

Formats the value using the given formatter.