Enum DrandError 

pub enum DrandError {
    AllEndpointsFailed,
    Network(String),
    HttpError(u16),
    NoCachedKyn,
    Serde(Error),
    Storage(StorageError),
    Reqwest(Error),
    InvalidSignature,
    StaleKyn {
        expected: u64,
        got: u64,
    },
}

Error type for drand beacon fetches and cache operations.

Variants

AllEndpointsFailed

All configured endpoints returned errors or timed out.

Network(String)

A network-level error (e.g. DNS failure, connection refused).

HttpError(u16)

An endpoint returned a non-2xx HTTP status.

NoCachedKyn

No kyn was found in the local cache (and the network is also unavailable).

Serde(Error)

JSON (de)serialization failed.

Storage(StorageError)

A storage engine error occurred while reading or writing the cache.

Reqwest(Error)

An HTTP client error from the reqwest library.

InvalidSignature

The BLS threshold signature was mathematically invalid.

StaleKyn

The returned kyn is too old compared to the system clock.

Fields

expected: u64

The expected Drand kyn based on the local system clock.

got: u64

The actual kyn returned by the endpoint.

Implementations

impl DrandError

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

Stable protocol error code.

pub fn error_type_uri(&self) -> String

RFC 7807 type URI for this error.

pub fn severity(&self) -> Severity

Severity level for logging and monitoring.

pub fn is_retryable(&self) -> bool

Whether the client should offer a retry action.

pub fn user_message(&self) -> String

Returns the user-facing message.

Trait Implementations

impl Debug for DrandError

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

Formats the value using the given formatter.

impl Display for DrandError

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

Formats the value using the given formatter.

impl Eq for DrandError

impl Error for DrandError

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<DrandError> for ApiError

fn from(e: DrandError) -> Self

Converts to this type from the input type.

impl From<Error> for DrandError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for DrandError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<StorageError> for DrandError

fn from(source: StorageError) -> Self

Converts to this type from the input type.

impl PartialEq for DrandError

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

Equality operator ==.

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

Inequality operator !=.