Enum ValidationError

pub enum ValidationError {
    Preparation(PrepareError),
    Invalid(InvalidCandidate),
    PossiblyInvalid(PossiblyInvalidError),
    Internal(InternalValidationError),
    ExecutionDeadline,
}

A error raised during validation of the candidate.

Variants

Preparation(PrepareError)

Deterministic preparation issue. In practice, most of the problems should be caught by prechecking, so this may be a sign of internal conditions.

In principle if preparation of the WASM fails, the current candidate cannot be the reason for that. So we can’t say whether it is invalid or not. In addition, with pre-checking enabled only valid runtimes should ever get enacted, so we can be reasonably sure that this is some local problem on the current node. However, as this particular error seems to indicate a deterministic error, we raise a warning.

Invalid(InvalidCandidate)

The error was raised because the candidate is invalid. Should vote against.

PossiblyInvalid(PossiblyInvalidError)

Possibly transient issue that may resolve after retries. Should vote against when retries fail.

Internal(InternalValidationError)

Preparation or execution issue caused by an internal condition. Should not vote against.

ExecutionDeadline

The execution deadline of allowed_ancestry_len + 1 has been reached. Jobs like backing have a limited time to execute. Once the deadline is reached, the current candidate cannot be backed, regardless of its validity.

Trait Implementations

impl Clone for ValidationError

fn clone(&self) -> ValidationError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ValidationError

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

Formats the value using the given formatter.

impl Display for ValidationError

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

Formats the value using the given formatter.

impl Error for ValidationError

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<InternalValidationError> for ValidationError

fn from(source: InternalValidationError) -> Self

Converts to this type from the input type.

impl From<InvalidCandidate> for ValidationError

fn from(source: InvalidCandidate) -> Self

Converts to this type from the input type.

impl From<PossiblyInvalidError> for ValidationError

fn from(source: PossiblyInvalidError) -> Self

Converts to this type from the input type.

impl From<PrepareError> for ValidationError

fn from(error: PrepareError) -> Self

Converts to this type from the input type.