Enum ControllerError 

#[non_exhaustive]
pub enum ControllerError {
    NotConfigured,
    Full,
    Closed,
    AlreadyStarted,
}

Available on crate feature controller only.

Error returned by controller submission methods.

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.

NotConfigured

The supervisor was built without a controller.

Enable the controller feature and configure the supervisor with with_controller(...) before using controller submission methods.

Full

The controller intake queue is full.

Returned only by try_submit. Use async submit or submit_and_watch if the caller should wait for intake capacity instead of failing fast.

Closed

The controller intake channel is closed.

This usually means the controller loop has stopped or the supervisor is shutting down.

AlreadyStarted

The controller loop was started more than once.

This is an internal lifecycle guard. Normal submission APIs do not return this variant.

Implementations

impl ControllerError

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

Returns a short stable label for logs and metrics.

The label is not the same as Display. It is intended for machine-readable dimensions.

Trait Implementations

impl Clone for ControllerError

fn clone(&self) -> ControllerError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ControllerError

impl Debug for ControllerError

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

Formats the value using the given formatter.

impl Display for ControllerError

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

Formats the value using the given formatter.

impl Eq for ControllerError

impl Error for ControllerError

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<ControllerError> for Error

fn from(source: ControllerError) -> Self

Converts to this type from the input type.

impl PartialEq for ControllerError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ControllerError