Enum Outcome 

pub enum Outcome {
    Success,
    Transient {
        retry_after: Option<Duration>,
    },
    Permanent,
}

How the resilience layer should treat the result of a single attempt.

Callers implement the mapping from their own error type to this enum and pass it as a Fn(&E) -> Outcome closure. Outcome::Transient failures are retried and count toward the circuit breaker; Outcome::Permanent failures fail fast but still count toward the breaker (a steadily-misconfigured dependency is unhealthy regardless of whether retrying would help).

Variants

Success

The attempt succeeded — reset the breaker’s failure count.

Transient

The attempt failed transiently and may succeed if retried. retry_after carries a server-supplied hint (e.g. a parsed Retry-After header).

Fields

retry_after: Option<Duration>

Permanent

The attempt failed permanently — retrying cannot help (auth, validation).

Implementations

impl Outcome

pub const fn is_transient(self) -> bool

Whether this outcome should be retried.

Trait Implementations

impl Clone for Outcome

fn clone(&self) -> Outcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Outcome

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

Formats the value using the given formatter.

impl PartialEq for Outcome

fn eq(&self, other: &Outcome) -> 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 Copy for Outcome

impl Eq for Outcome

impl StructuralPartialEq for Outcome