Enum AppError 

#[non_exhaustive]
pub enum AppError {
    InvalidInput(String),
    NotFound(String),
    Conflict(String),
    Busy(String),
    Closed(String),
    Timeout(String),
    Integration(String),
}

A safe caller-visible application error.

Operational messages are bounded and redact lower payloads and identities. Errors supplied by explicitly registered codecs or lifecycle hooks retain caller context at that opt-in boundary. Match variants (with a fallback for this non-exhaustive enum), rather than parsing Display text. An error from an observer does not by itself prove an accepted native operation rolled back.

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.

InvalidInput(String)

Caller-authored input is invalid.

NotFound(String)

Exact scoped evidence proves a resource absent.

Conflict(String)

A durable fact, fence, or transition conflicts.

Busy(String)

Finite capacity or an exclusive owner prevents progress.

Closed(String)

Revocation or terminal invalidation rejects new work.

Timeout(String)

An application-owned deadline elapsed.

Integration(String)

Caller behavior, a lower public operation, or a private durable record failed.

Trait Implementations

impl Debug for AppError

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

Formats the value using the given formatter.

impl Display for AppError

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

Formats the value using the given formatter.

impl Error for AppError

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<KitError> for AppError

fn from(error: KitError) -> Self

Converts to this type from the input type.

impl From<StateStoreError> for AppError

fn from(error: StateStoreError) -> Self

Converts to this type from the input type.