Enum Error 

pub enum Error {
    IntConversion(TryFromIntError),
    TimerError(SystemTimeError),
    Message(String),
}

Low-level standard library errors wrapped into a common type for domain propagation.

This enum exists to bridge the gap between standard library error types (such as TryFromIntError) and the domain-specific error enums in api, storage, and model. Each domain error has an Internal(#[from] internal::Error) variant, and the crate::wrap_internal_err! macro generates the additional From implementations that allow the ? operator to chain through two conversions automatically.

Consumers should never match on this type directly; it is an implementation detail of the error propagation chain.

Variants

IntConversion(TryFromIntError)

An integer type conversion overflowed or underflowed.

Typically produced when converting between usize, u64, i64, and similar primitive integer types using TryFrom or TryInto.

TimerError(SystemTimeError)

A system time operation failed.

Produced when a SystemTime value is before the Unix epoch, which can occur when computing elapsed durations or converting to timestamp integers.

Message(String)

A freeform error message for cases not covered by the other variants.

Used when a custom string description is the most practical way to surface an internal condition without defining a new strongly-typed variant.

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, __formatter: &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 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 Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<SystemTimeError> for Error

fn from(source: SystemTimeError) -> Self

Converts to this type from the input type.

impl From<TryFromIntError> for Error

fn from(source: TryFromIntError) -> Self

Converts to this type from the input type.