Enum WalEntry 

pub enum WalEntry {
    Put {
        key: Vec<u8>,
        value: Vec<u8>,
    },
    Delete {
        key: Vec<u8>,
    },
    Checkpoint {
        id: u64,
    },
    Commit {
        offsets: HashMap<String, u64>,
        watermark: Option<i64>,
    },
}

WAL entry types representing different operations.

Variants

Put

Put a key-value pair.

Fields

key: Vec<u8>

The key to put.

value: Vec<u8>

The value to associate with the key.

Delete

Delete a key.

Fields

key: Vec<u8>

The key to delete.

Checkpoint

Checkpoint marker.

Fields

id: u64

Checkpoint identifier.

Commit

Commit offsets for exactly-once semantics.

Fields

offsets: HashMap<String, u64>

Map of topic/partition to offset.

watermark: Option<i64>

Current watermark at commit time (for recovery).

Trait Implementations

impl Archive for WalEntry

where Vec<u8>: Archive, u64: Archive, HashMap<String, u64>: Archive, Option<i64>: Archive,

type Archived = ArchivedWalEntry

The archived representation of this type.

type Resolver = WalEntryResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve( &self, resolver: <Self as Archive>::Resolver, out: Place<<Self as Archive>::Archived>, )

Creates the archived version of this value at the given position and writes it to the given output.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

impl Clone for WalEntry

fn clone(&self) -> WalEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WalEntry

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

Formats the value using the given formatter.

impl<__D: Fallible + ?Sized> Deserialize<WalEntry, __D> for Archived<WalEntry>

where Vec<u8>: Archive, <Vec<u8> as Archive>::Archived: Deserialize<Vec<u8>, __D>, u64: Archive, <u64 as Archive>::Archived: Deserialize<u64, __D>, HashMap<String, u64>: Archive, <HashMap<String, u64> as Archive>::Archived: Deserialize<HashMap<String, u64>, __D>, Option<i64>: Archive, <Option<i64> as Archive>::Archived: Deserialize<Option<i64>, __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<WalEntry, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl<__S: Fallible + ?Sized> Serialize<__S> for WalEntry

where Vec<u8>: Serialize<__S>, u64: Serialize<__S>, HashMap<String, u64>: Serialize<__S>, Option<i64>: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<Self as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.