Struct SizeError 

pub struct SizeError {
    pub kind: SizeErrorKind,
    /* private fields */
}

An error from a CacheTier::len operation.

Use the kind field to distinguish between tiers that don’t support size reporting (Unsupported) and actual storage failures (Failed).

Fields

kind: SizeErrorKind

The kind of error that occurred.

Implementations

impl SizeError

pub fn unsupported() -> Self

Creates a new SizeError indicating that the tier does not support size reporting.

Trait Implementations

impl Debug for SizeError

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

Formats the value using the given formatter.

impl Display for SizeError

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

Formats the value using the given formatter.

impl Enrichable for SizeError

fn add_enrichment(&mut self, entry: EnrichmentEntry)

Adds enrichment information to the error.

impl Error for SizeError

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 ErrorExt for SizeError

fn message(&self) -> String

Returns the formatted error message without backtrace.

fn backtrace(&self) -> &Backtrace

Returns a reference to the captured backtrace.

fn has_backtrace(&self) -> bool

Returns true if the error has a captured backtrace.

fn find_source<T>(&self) -> Option<&T>

where T: Error + 'static,

Finds the first source error of the specified type in the error chain.

fn find_source_with<T>(&self, search: impl Fn(&T) -> bool) -> Option<&T>

where T: Error + 'static,

Finds the first source error of the specified type that matches the given predicate.

impl From<Error> for SizeError

fn from(error: Error) -> Self

Converts to this type from the input type.

impl From<Infallible> for SizeError

fn from(_: Infallible) -> Self

Converts to this type from the input type.

impl From<SizeError> for Error

fn from(err: SizeError) -> Self

Converts to this type from the input type.