Struct Error 

pub struct Error { /* private fields */ }

Load-side error.

Carries an inner anyhow::Error for rich diagnostics (chained context, backtraces) along with a single recoverable bit. Recoverable errors are the contract for probing APIs: a caller that tries multiple load strategies (e.g. current version, then legacy) can distinguish “this attempt didn’t match, try another” from “the data is broken, stop now”.

Most constructors produce critical (non-recoverable) errors. Probing call sites use the explicit *_recoverable constructors, or rely on the From<Kind> impl which classifies each Kind variant according to Kind::is_recoverable.

Implementations

impl Error

pub fn new<E>(err: E) -> Self

where E: Error + Send + Sync + 'static,

Construct a critical error from an underlying source error.

pub fn message<D>(message: D) -> Self

where D: Display + Debug + Send + Sync + 'static,

Construct a critical error from a display message.

pub fn new_recoverable<E>(err: E) -> Self

where E: Error + Send + Sync + 'static,

Construct a recoverable error from an underlying source. Suitable for probing APIs that may attempt an alternative load strategy.

pub fn message_recoverable<D>(message: D) -> Self

where D: Display + Debug + Send + Sync + 'static,

Construct a recoverable error from a display message. Suitable for probing APIs that may attempt an alternative load strategy.

pub fn context<D>(self, message: D) -> Self

where D: Display + Send + Sync + 'static,

Attach additional context. The recoverable flag is preserved.

pub fn is_recoverable(&self) -> bool

Returns true if this error is recoverable. Probing call sites should only fall back to alternative load strategies when this is true.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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

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

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<Kind> for Error

fn from(kind: Kind) -> Self

Converts to this type from the input type.