Enum WalHeaderError 

pub enum WalHeaderError {
    Missing,
    Truncated {
        needed: usize,
        available: usize,
    },
    WrongMagic {
        expected: [u8; 8],
        actual: [u8; 8],
    },
    WrongFamily {
        expected: u16,
        actual: u16,
    },
    UnsupportedVersion {
        family: u16,
        version: u16,
        minimum: u16,
        maximum: u16,
    },
    InvalidHeaderLength {
        expected: u64,
        actual: u64,
    },
    NonZeroFileLength {
        actual: u64,
    },
    InvalidSharedHeader {
        check: FormatCheck,
    },
}

Specific failure found before WAL record replay begins.

Variants

Missing

No file header bytes were present.

Truncated

Some, but not all, complete WAL header bytes were present.

Fields

needed: usize

Required complete WAL header width.

available: usize

Bytes available in the file.

WrongMagic

The permanent eight-byte magic did not match.

Fields

expected: [u8; 8]

Required repository file magic.

actual: [u8; 8]

Eight bytes found at the magic position.

WrongFamily

The file declares a persisted family other than WAL.

Fields

expected: u16

Permanent WAL family identifier.

actual: u16

Family identifier found in the file.

UnsupportedVersion

The WAL version is outside the registry’s accepted range.

Fields

family: u16

WAL family identifier.

version: u16

Version found in the file.

minimum: u16

Lowest accepted WAL version.

maximum: u16

Highest accepted WAL version.

InvalidHeaderLength

The shared header width is not exactly the v1 WAL header width.

Fields

expected: u64

Required v1 WAL header width.

actual: u64

Header width found in the file.

NonZeroFileLength

The append-only WAL declared a non-zero immutable file length.

Fields

actual: u64

Reserved value found in the shared file-length slot.

InvalidSharedHeader

The shared decoder rejected a check that WAL-specific mapping did not expect.

Fields

check: FormatCheck

Exact shared-format check that failed.

Trait Implementations

impl Clone for WalHeaderError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WalHeaderError

impl Debug for WalHeaderError

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

Formats the value using the given formatter.

impl Display for WalHeaderError

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

Formats the value using the given formatter.

impl Eq for WalHeaderError

impl Error for WalHeaderError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for WalHeaderError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for WalHeaderError