Enum BackendError 

pub enum BackendError {
    UnsupportedKeyType(KeyType),
    KeyNotFound(String),
    Unsupported(&'static str),
    DecryptFailed,
    UnsupportedAlgorithm(AeadAlgorithm),
    Transport(String),
    Backend(String),
    Protocol(String),
}

Errors a backend may return. Service adapters map these to canonical gRPC statuses.

Variants

UnsupportedKeyType(KeyType)

KeyNotFound(String)

Unsupported(&'static str)

The op (e.g. import/list/key_metadata) is not supported by this backend kind. Distinct from BackendError::UnsupportedKeyType: the operation itself has no implementation here.

DecryptFailed

AEAD authentication failed on decrypt: a wrong tag, a wrong key version, or mismatched AAD. Deliberately opaque: it carries no detail distinguishing the cause (no padding/AAD oracle), and the handler maps it to the single decrypt_failed wire code.

UnsupportedAlgorithm(AeadAlgorithm)

The request’s algorithm does not match the key’s catalog keyType (e.g. a chacha20-poly1305 request against an aes-256-gcm key), or the AEAD suite is otherwise not usable for this key. Maps to the wire unsupported_algorithm / invalid_request per the call site.

Transport(String)

Transport / HTTP failure talking to the backend.

Backend(String)

The backend was reachable but rejected or failed the operation.

Protocol(String)

A response from the backend could not be understood.

Trait Implementations

impl Debug for BackendError

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

Formats the value using the given formatter.

impl Display for BackendError

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

Formats the value using the given formatter.

impl Error for BackendError

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<BackendError> for ProviderError

fn from(source: BackendError) -> Self

Converts to this type from the input type.

impl From<BackendError> for ManagerError

fn from(source: BackendError) -> Self

Converts to this type from the input type.

impl From<BackendError> for GenericMintError

fn from(e: BackendError) -> Self

Converts to this type from the input type.