Struct EnvironmentLogWriter 

pub struct EnvironmentLogWriter { /* private fields */ }

LogWriter implementation backed by the live LogManager.

Each write_entry call:

1. Resolves the entry_type byte to a LogEntryType.
2. Writes the payload to the local log via LogManager::log().
3. Registers the returned LSN in the provided vlsn_index so that the VLSN→LSN mapping is kept up-to-date on the replica.

Implementations

impl EnvironmentLogWriter

pub fn new(log_manager: Arc<LogManager>, vlsn_index: Arc<VlsnIndex>) -> Self

Create a new EnvironmentLogWriter.

Arguments

• log_manager — The live LogManager for this replica environment.
• vlsn_index — The VLSN index to update after each written entry.

pub fn with_replay( log_manager: Arc<LogManager>, vlsn_index: Arc<VlsnIndex>, replay: ReplicaReplay, ) -> Self

REP-7 (B): create a writer that ALSO live-applies each entry to the replica’s in-memory tree via replay, so reads on the replica see replicated data without a restart.

pub fn last_applied_vlsn_handle(&self) -> Option<Arc<AtomicU64>>

REP-10 seam: shared handle to the replica’s last-applied VLSN, when a live replay driver is installed. A future consistency policy gates reads on this; this method only exposes it.

Trait Implementations

impl LogWriter for EnvironmentLogWriter

fn write_entry( &mut self, vlsn: u64, entry_type: u8, payload: &[u8], ) -> Result<()>

Write one replicated entry to the local log.

Resolves entry_type → LogEntryType, appends the payload to the WAL, and records the assigned LSN in the VLSN index. Returns an error if the entry type is unknown or the write fails.