Enum ErrorScope 

#[non_exhaustive]
pub enum ErrorScope {
    Read,
    Reclaim,
    AckFlush,
    Drop,
    HandlerPanic,
}

Where in the bus runtime an error was raised.

#[non_exhaustive] lets us add new sources without breaking observers.

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.

Read

XREADGROUP (or backend equivalent) failed; the consume loop will back off and retry.

Reclaim

The reclaim task failed to fetch idle pending entries; the task will back off and retry.

AckFlush

A batched ack flush to the backend failed. The waiters got the error via their oneshot channels; this hook fires once for the whole batch.

Drop

Subscription was dropped without close() having been called. Fired at most once from the Drop impl on StreamSubscription.

HandlerPanic

A delivery task panicked. The panic message is delivered to ErrorObserver::on_panic; this scope tags any associated on_error invocation.

Trait Implementations

impl Clone for ErrorScope

fn clone(&self) -> ErrorScope

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ErrorScope

impl Debug for ErrorScope

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

Formats the value using the given formatter.

impl Eq for ErrorScope

impl Hash for ErrorScope

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 ErrorScope

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ErrorScope