Enum StandardCode 

#[non_exhaustive]
pub enum StandardCode {
    MalformedRequest,
    UnsupportedType,
    UnsupportedVersion,
    Expired,
    ProofRequired,
    ProofInvalid,
    PermissionDenied,
    WrongRecipient,
    IdentityMismatch,
    IdConflict,
    Cancelled,
    TaskFailed,
    Unavailable,
    InternalError,
}

The framework-defined standard error codes (SPEC.md §8.3).

Marked #[non_exhaustive] as of 0.7.0: the framework adds a standard code from time to time (idConflict in 0.4), and without this every such addition would be a breaking change for any downstream match. Downstream code must carry a wildcard arm; in exchange, future codes arrive as a minor bump rather than a major one.

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.

MalformedRequest

The document did not validate against the framework schema or the task-specific payload schema.

UnsupportedType

The consumer does not recognize the type URI.

UnsupportedVersion

The type URI was recognized but its MAJOR.MINOR is not supported.

Expired

expiresAt was in the past at the time of evaluation.

ProofRequired

A proof was required and was missing.

ProofInvalid

A proof was present but failed verification.

PermissionDenied

The requesting party is not authorized to invoke this task.

WrongRecipient

The document’s recipient does not identify the receiving consumer.

IdentityMismatch

An in-band issuer or recipient is inconsistent with the transport- authenticated identity for the same party.

IdConflict

The document’s id matches one the consumer has already accepted, but its content differs (SPEC.md §7.2 item 11).

Cancelled

The consumer stopped the task on its own initiative — operator action, policy, capacity, or a compliance hold (SPEC.md §12). Distinct from a producer-requested cancellation, which is answered by a response to the trust-task-control document rather than by an error.

TaskFailed

The recipient party attempted the task and could not complete it.

Unavailable

The recipient party is temporarily unable to process the task.

InternalError

The recipient party encountered an unexpected internal failure.

Implementations

impl StandardCode

pub fn default_retryable(self) -> bool

The default retryable value an emitter SHOULD use per SPEC.md §8.3, unless task-specific knowledge dictates otherwise.

TaskFailed is varies in the spec; we treat its default as false.

pub fn as_str(self) -> &'static str

The wire-form string this code is emitted as.

As of framework 0.2 the standard codes are lowerCamelCase (SPEC.md §8.3 / Appendix B). parse_standard still accepts the framework 0.1 snake_case spellings so a 0.2 consumer can read a 0.1 peer.

Trait Implementations

impl Clone for StandardCode

fn clone(&self) -> StandardCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StandardCode

impl Debug for StandardCode

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

Formats the value using the given formatter.

impl Display for StandardCode

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

Formats the value using the given formatter.

impl Eq for StandardCode

impl From<StandardCode> for ErrorPayload

fn from(code: StandardCode) -> ErrorPayload

Converts to this type from the input type.

impl From<StandardCode> for TrustTaskCode

fn from(code: StandardCode) -> TrustTaskCode

Converts to this type from the input type.

impl Hash for StandardCode

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for StandardCode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for StandardCode