Enum SegmentError 

#[non_exhaustive]
pub enum SegmentError {
    Io(Error),
    Cbor {
        phase: &'static str,
        path: PathBuf,
        message: String,
    },
    Cipher {
        path: PathBuf,
        message: String,
    },
    Integrity {
        path: PathBuf,
        reason: &'static str,
    },
}

Errors produced by segment-buffer operations.

Every non-I/O variant carries the path of the segment file involved, so an operator can act on the failure without spelunking through logs.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Io(Error)

Filesystem I/O failure (directory creation, segment read/write, rename, etc.).

Kept as a tuple variant with #[from] so ? remains ergonomic at the many I/O call sites where per-site context would add noise without value.

Cbor

CBOR serialization or deserialization of a segment file failed.

Fields

phase: &'static str

Which direction failed: "serialize" (writing) or "deserialize" (reading).

path: PathBuf

Path to the offending segment file.

message: String

Underlying CBOR error message.

Cipher

Cipher encrypt or decrypt of a segment file failed (key mismatch, AEAD tag invalid, cipher misconfiguration).

Fields

path: PathBuf

Path to the offending segment file.

message: String

Underlying cipher error message.

Integrity

Segment file failed an integrity check: truncated, too small for the AEAD nonce, or unrecognized envelope.

Fields

path: PathBuf

Path to the offending segment file.

reason: &'static str

What failed, in one short phrase.

Trait Implementations

impl Debug for SegmentError

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

Formats the value using the given formatter.

impl Display for SegmentError

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

Formats the value using the given formatter.

impl Error for SegmentError

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 From<Error> for SegmentError

fn from(source: Error) -> Self

Converts to this type from the input type.