Struct DbFecHeader 

pub struct DbFecHeader {
    pub magic: [u8; 8],
    pub version: u32,
    pub page_size: u32,
    pub default_group_size: u32,
    pub default_r_repair: u32,
    pub header_page_r_repair: u32,
    pub db_gen_digest: [u8; 16],
    pub checksum: u64,
}

Header of the .db-fec sidecar file (byte offset 0).

Fields

magic: [u8; 8]

version: u32

page_size: u32

default_group_size: u32

default_r_repair: u32

header_page_r_repair: u32

db_gen_digest: [u8; 16]

checksum: u64

Implementations

impl DbFecHeader

pub fn new( page_size: u32, change_counter: u32, page_count: u32, freelist_count: u32, schema_cookie: u32, ) -> Self

Create a new header for the given page size and db generation fields.

pub fn to_bytes(&self) -> [u8; 52]

Serialize to bytes.

pub fn from_bytes(buf: &[u8; 52]) -> Result<Self>

Deserialize from bytes.

pub fn is_current( &self, change_counter: u32, page_count: u32, freelist_count: u32, schema_cookie: u32, ) -> bool

Verify that this header’s db_gen_digest matches the current .db generation.

Trait Implementations

impl Clone for DbFecHeader

fn clone(&self) -> DbFecHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DbFecHeader

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

Formats the value using the given formatter.

impl PartialEq for DbFecHeader

fn eq(&self, other: &DbFecHeader) -> 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 Eq for DbFecHeader

impl StructuralPartialEq for DbFecHeader