Enum CacheLoadRejection 

pub enum CacheLoadRejection {
    LegacyUnframed,
    Truncated,
    BadCrc,
    UnsupportedVersion(u16),
    TableIdMismatch {
        expected: u64,
        found: u64,
    },
    SchemaIdMismatch {
        expected: u64,
        found: u64,
    },
    GenerationMismatch {
        expected: u64,
        found: u64,
    },
    KeyMismatch {
        expected: u64,
        found: u64,
    },
    MissingCipher,
    DecryptionFailed,
    PayloadInvalid,
}

Why a persisted frame was rejected by decode_persisted_entry. The caller maps each variant to a rejection metric / log line.

Variants

LegacyUnframed

File does not start with the MLCP magic — legacy unframed data.

Truncated

File is too small to contain a valid header / payload / trailer.

BadCrc

Stored CRC does not match the body bytes.

UnsupportedVersion(u16)

Format version is not one we can read.

TableIdMismatch

Table identity does not match the open table.

Fields

expected: u64

found: u64

SchemaIdMismatch

Schema identity does not match the open table.

Fields

expected: u64

found: u64

GenerationMismatch

Logical generation does not exactly match the open table’s current epoch (both older and future generations are rejected).

Fields

expected: u64

found: u64

KeyMismatch

The cache key embedded in the header does not match the on-disk file name (e.g. a file got renamed but its header still references the old key — the safest response is to reject the whole entry).

Fields

expected: u64

found: u64

MissingCipher

File claimed an encrypted payload but a cipher was not provided.

DecryptionFailed

Cipher was provided but the GCM tag check failed (wrong key, bit rot).

PayloadInvalid

Frame decoded cleanly but the inner payload did not deserialize.

Trait Implementations

impl Clone for CacheLoadRejection

fn clone(&self) -> CacheLoadRejection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheLoadRejection

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

Formats the value using the given formatter.

impl Display for CacheLoadRejection

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

Formats the value using the given formatter.

impl Eq for CacheLoadRejection

impl Error for CacheLoadRejection

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 CacheLoadRejection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CacheLoadRejection