Struct WalFrameHeader 

pub struct WalFrameHeader {
    pub page_number: u32,
    pub db_size: u32,
    pub salts: WalSalts,
    pub checksum: SqliteWalChecksum,
}

Parsed 24-byte WAL frame header.

Layout:

Offset  Size  Description
  0       4   Page number
  4       4   For commit frames: db size in pages. Otherwise 0.
  8       4   Salt-1 (must match WAL header)
 12       4   Salt-2 (must match WAL header)
 16       4   Cumulative checksum-1
 20       4   Cumulative checksum-2

Fields

page_number: u32

Page number this frame writes to.

db_size: u32

For commit frames: database size in pages after this commit. Otherwise 0.

salts: WalSalts

Salt pair (must match WAL header salts).

checksum: SqliteWalChecksum

Cumulative checksum (covers this frame and all prior frames).

Implementations

impl WalFrameHeader

pub const fn is_commit(&self) -> bool

Whether this frame is a commit frame (non-zero db_size).

pub fn from_bytes(buf: &[u8]) -> Result<Self>

Parse a 24-byte WAL frame header from raw bytes.

pub fn to_bytes(&self) -> [u8; 24]

Serialize this frame header into a 24-byte buffer.

Note: The checksum field is written as-is. To compute the correct checksum, use compute_wal_frame_checksum on the complete frame.

Trait Implementations

impl Clone for WalFrameHeader

fn clone(&self) -> WalFrameHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WalFrameHeader

impl Debug for WalFrameHeader

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

Formats the value using the given formatter.

impl Eq for WalFrameHeader

impl PartialEq for WalFrameHeader

fn eq(&self, other: &WalFrameHeader) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for WalFrameHeader