Enum ErrorKind 

#[non_exhaustive]
pub enum ErrorKind {
    Invalid,
    Http,
    Rejected,
    Timeout,
    Backend,
    Worker,
    Dataset,
    Frontier,
    Cancelled,
}

Classification of a failure, so callers can branch without matching on messages.

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.

Invalid

The input was invalid: a malformed URL, request or configuration.

Http

The transfer failed, or the remote answered with a status worth retrying, such as 429 or 503.

Rejected

The remote refused the request in a way retrying won’t fix, such as 404 or 403.

Timeout

The operation timed out.

Backend

A backend failed, e.g. while connecting or driving a browser.

Worker

A worker or handler failed.

Dataset

Reading from or writing to a dataset failed.

Frontier

Reading from or writing to the frontier failed.

Cancelled

The operation was cancelled.

Implementations

impl ErrorKind

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

Returns the kind as a lowercase string.

pub const fn is_retryable(self) -> bool

Whether an operation failing with this kind is worth retrying. Only transient failures are retryable.

Trait Implementations

impl Clone for ErrorKind

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 ErrorKind

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Display for ErrorKind

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

Formats the value using the given formatter.

impl Eq for ErrorKind

impl Hash for ErrorKind

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

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 ErrorKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ErrorKind