Struct WalReader 

pub struct WalReader { /* private fields */ }

Read the write-ahead-log file produced by Bf-Tree.

Allows users to iterate over the log entries in the file and decide what to do with them.

Example

let reader = WalReader::new(&file, 4096);
for segment in reader.segment_iter() {
    let seg_iter = segment.iter();
    for (header, buffer) in seg_iter {
        ...
    }
}

Implementations

impl WalReader

pub fn new(path: impl AsRef<Path>, segment_size: usize) -> Self

Create a new WalReader instance.

The `segment_size`` should be the same as the one used to create the WriteAheadLog instance.

Todo: we should include segment_size as a field in the wal file, so that we don’t need to pass it in.

pub fn segment_iter(&self) -> WalSegmentIter<'_>

Iterate through all the segments in the wal file.

Each segment contains multiple log entries, you can iterate through the log entries in each segment using the iter method on WalSegment.