Struct SegmentManager 

pub struct SegmentManager { /* private fields */ }

Manages WAL segment files

Implementations

impl SegmentManager

pub fn new(wal_dir: PathBuf) -> Self

Create a new segment manager for the given WAL directory

pub fn list_segments(&self) -> Result<Vec<SegmentInfo>>

List all segment files in order

pub fn total_size(&self) -> Result<u64>

Get the total size of all segments

pub fn segment_count(&self) -> Result<usize>

Get the number of segment files

pub fn cleanup_before(&self, sequence: u64) -> Result<usize>

Delete segments older than the given sequence number

This is useful after a checkpoint to reclaim disk space. Returns the number of segments deleted.

pub fn cleanup_all(&self) -> Result<usize>

Delete all segment files

Use with caution - this removes all WAL data!

pub fn latest_segment(&self) -> Result<Option<SegmentInfo>>

Get the latest (highest sequence) segment

pub fn oldest_segment(&self) -> Result<Option<SegmentInfo>>

Get the oldest (lowest sequence) segment

pub fn is_available(&self) -> bool

Check if the WAL directory exists and is accessible

pub fn ensure_dir(&self) -> Result<()>

Create the WAL directory if it doesn’t exist