Enum BackendErrorKind 

pub enum BackendErrorKind {
    Timeout,
    RateLimit {
        retry_after: Option<Duration>,
    },
    ServerError {
        status: u16,
    },
    AuthError,
    NetworkError,
    StreamDropped,
    InvalidResponse,
    ProviderUnavailable,
    CircuitOpen,
    Unknown,
}

Classification of backend API errors.

Variants

Timeout

Request timed out (connect or read timeout).

RateLimit

Provider returned 429 Too Many Requests.

Fields

retry_after: Option<Duration>

Hint from the provider’s Retry-After header, if present.

ServerError

Provider returned a server error (5xx).

Fields

status: u16

AuthError

Authentication failed (401/403) — API key invalid or expired.

NetworkError

Network-level error (DNS, connection refused, TLS, etc.).

StreamDropped

SSE stream dropped mid-response.

InvalidResponse

Provider response could not be parsed.

ProviderUnavailable

Provider is unknown or not registered.

CircuitOpen

Circuit breaker is open — calls are being rejected.

Unknown

Unclassified error.

Implementations

impl BackendErrorKind

pub fn is_retryable(&self) -> bool

Whether this error type is worth retrying.

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

Human-readable error category for logging.

pub fn from_status(status: u16) -> Self

Classify an HTTP status code into an error kind.

pub fn from_reqwest_error(e: &Error) -> Self

Classify a reqwest error into an error kind.

Trait Implementations

impl Clone for BackendErrorKind

fn clone(&self) -> BackendErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BackendErrorKind

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

Formats the value using the given formatter.

impl Display for BackendErrorKind

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

Formats the value using the given formatter.