Enum WALRecord

pub enum WALRecord<T: Types> {
    SaveVote(T::Vote),
    Append(T::LogId, T::LogPayload),
    Commit(T::LogId),
    TruncateAfter(Option<T::LogId>),
    PurgeUpto(T::LogId),
    State(RaftLogState<T>),
}

WALRecord represents different types of records that can be written to the Write-Ahead Log (WAL). Each variant corresponds to a specific operation in the Raft protocol.

Variants

SaveVote(T::Vote)

Save vote change.

Append(T::LogId, T::LogPayload)

Append new log entry.

Commit(T::LogId)

Save committed log id.

TruncateAfter(Option<T::LogId>)

Truncate log entries after the specified log id.

PurgeUpto(T::LogId)

Purge log entries up to (and including) the specified log id.

State(RaftLogState<T>)

Save a snapshot of the complete state of the Raft log.

Trait Implementations

impl<T: Clone + Types> Clone for WALRecord<T>

where T::Vote: Clone, T::LogId: Clone, T::LogPayload: Clone,

fn clone(&self) -> WALRecord<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Types> Debug for WALRecord<T>

where T::Vote: Debug, T::LogId: Debug, T::LogPayload: Debug,

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

Formats the value using the given formatter.

impl<T: Types> Decode for WALRecord<T>

Implements decoding for WALRecord Reads the record type, payload, and verifies the checksum

fn decode<R: Read>(r: R) -> Result<Self, Error>

impl<T: Types> Encode for WALRecord<T>

Implements encoding for WALRecord Each record is encoded as:

• 4 bytes: record type
• variable bytes: record payload
• 4 bytes: checksum

fn encode<W: Write>(&self, w: W) -> Result<usize, Error>

fn encode_to_vec(&self) -> Result<Vec<u8>, Error>

where Self: Sealed,

Encodes the value into a new Vec<u8>.

impl<T: PartialEq + Types> PartialEq for WALRecord<T>

where T::Vote: PartialEq, T::LogId: PartialEq, T::LogPayload: PartialEq,

fn eq(&self, other: &WALRecord<T>) -> 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<T: Eq + Types> Eq for WALRecord<T>

where T::Vote: Eq, T::LogId: Eq, T::LogPayload: Eq,

impl<T: Types> StructuralPartialEq for WALRecord<T>