Enum PreconditionError 

pub enum PreconditionError {
    Required,
    Invalid(InvalidIfMatch),
    Stale {
        current: Option<Revision>,
    },
}

A failed revision precondition.

Converts into ApiError as 428 precondition_required, 400 invalid_if_match, or 412 precondition_failed.

Variants

Required

A route that requires If-Match received none.

Invalid(InvalidIfMatch)

The If-Match value is not one strong ETag for the resource.

Stale

The expected revision is not the stored one.

Fields

current: Option<Revision>

The stored revision, when the product knows it.

Implementations

impl PreconditionError

pub const fn status(&self) -> StatusCode

Returns the HTTP status for this error.

pub const fn code(&self) -> &'static str

Returns the stable error code for this error.

Trait Implementations

impl Clone for PreconditionError

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for PreconditionError

impl Debug for PreconditionError

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

Formats the value using the given formatter.

impl Display for PreconditionError

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

Formats the value using the given formatter.

impl Eq for PreconditionError

impl Error for PreconditionError

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<InvalidIfMatch> for PreconditionError

fn from(error: InvalidIfMatch) -> Self

Converts to this type from the input type.

impl From<PreconditionError> for ApiError

fn from(error: PreconditionError) -> Self

Converts to this type from the input type.

impl PartialEq for PreconditionError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PreconditionError