Enum polkadot_overseer::SubsystemError

pub enum SubsystemError {
    NotifyCancellation(Canceled),
    QueueError(SendError),
    Io(Error),
    Infallible(Infallible),
    Prometheus(Error),
    Context(String),
    SubsystemStalled(&'static str),
    Generated(OrchestraError),
    FromOrigin {
        origin: &'static str,
        source: Box<dyn Error + Send + Sync>,
    },
}

An error type that describes faults that may happen

These are:

• Channels being closed
• Subsystems dying when they are not expected to
• Subsystems not dying when they are told to die
• etc.

Variants

NotifyCancellation(Canceled)

QueueError(SendError)

Io(Error)

Infallible(Infallible)

Prometheus(Error)

Context(String)

SubsystemStalled(&'static str)

Generated(OrchestraError)

Generated by the #[overseer(..)] proc-macro

FromOrigin

Per origin (or subsystem) annotations to wrap an error.

Fields

origin: &'static str

An additional annotation tag for the origin of source.

source: Box<dyn Error + Send + Sync>

The wrapped error. Marked as source for tracking the error chain.

Implementations

impl SubsystemError

pub fn with_origin<E>(origin: &'static str, err: E) -> SubsystemError

where E: 'static + Send + Sync + Error,

Adds a str as origin to the given error err.

Trait Implementations

impl Debug for SubsystemError

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

Formats the value using the given formatter.

impl Display for SubsystemError

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

Formats the value using the given formatter.

impl Error for SubsystemError

fn source(&self) -> Option<&(dyn Error + 'static)>

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<Canceled> for SubsystemError

fn from(source: Canceled) -> SubsystemError

Converts to this type from the input type.

impl From<Error> for SubsystemError

fn from(source: Error) -> SubsystemError

Converts to this type from the input type.

impl From<Infallible> for SubsystemError

fn from(source: Infallible) -> SubsystemError

Converts to this type from the input type.

impl From<OrchestraError> for SubsystemError

fn from(source: OrchestraError) -> SubsystemError

Converts to this type from the input type.

impl From<Error> for SubsystemError

fn from(source: Error) -> SubsystemError

Converts to this type from the input type.

impl From<SendError> for SubsystemError

fn from(source: SendError) -> SubsystemError

Converts to this type from the input type.

impl<Context> Subsystem<Context, SubsystemError> for DummySubsystem

where Context: SubsystemContext<Signal = OverseerSignal, Error = SubsystemError>,

fn start(self, ctx: Context) -> SpawnedSubsystem<SubsystemError>

Start this Subsystem and return SpawnedSubsystem.