Struct FileHeader 

pub struct FileHeader {
    pub magic: u32,
    pub version: u32,
    pub wal_region: Region,
    pub manifest_region: Region,
    pub sst_region: Region,
}

File layout header

Format (big-endian for magic, little-endian for rest):

[magic(4)] [version(4)]
[wal_offset(8)] [wal_size(8)]
[manifest_offset(8)] [manifest_size(8)]
[sst_offset(8)] [sst_size(8)]
[reserved(3968)]
[crc32c(4)]

Fields

magic: u32

version: u32

wal_region: Region

manifest_region: Region

sst_region: Region

Implementations

impl FileHeader

pub fn new() -> Self

Create a new file header with default sizes

pub fn with_sizes(wal_size: u64, manifest_size: u64) -> Self

Create with custom region sizes

pub fn encode(&self) -> Bytes

Serialize header to bytes

pub fn decode(data: &[u8]) -> Result<Self>

Deserialize header from bytes

Trait Implementations

impl Clone for FileHeader

fn clone(&self) -> FileHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FileHeader

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

Formats the value using the given formatter.

impl Default for FileHeader

fn default() -> Self

Returns the “default value” for a type.