Struct InMemoryWalWriter 

pub struct InMemoryWalWriter { /* private fields */ }

In-memory WAL writer for deterministic testing and instrumentation.

Implementations

impl InMemoryWalWriter

pub fn new() -> Self

Create an in-memory WAL writer with no simulated fsync delay.

pub fn with_fsync_delay(delay: Duration) -> Self

Create with simulated fsync delay for throughput model testing.

pub fn sync_count(&self) -> u64

Total number of sync() calls observed.

pub fn total_appended(&self) -> u64

Total requests appended across all batches.

Trait Implementations

impl Debug for InMemoryWalWriter

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

Formats the value using the given formatter.

impl Default for InMemoryWalWriter

fn default() -> Self

Returns the “default value” for a type.

impl WalBatchWriter for InMemoryWalWriter

fn append_batch(&self, requests: &[&CommitRequest]) -> Result<Vec<u64>>

Append commit frames for every request in the batch. Returns a WAL offset per request.

fn sync(&self) -> Result<()>

Issue a single fsync (or fdatasync) covering all appended frames.