Enum BackendError 

pub enum BackendError {
    NotConfigured,
    Timeout,
    Serialization(Error),
    Redis(RedisError),
    Pool(PoolError),
    PoolCreationError(String),
    TaskFailed(String),
}

Errors that can occur while storing or retrieving task results.

Variants

NotConfigured

Raised when a result backend was requested but not configured.

Timeout

Raised when waiting for a task exceeded the provided timeout.

Serialization(Error)

Raised when deserializing or serializing backend payloads failed.

Redis(RedisError)

Raised when a Redis command fails.

Pool(PoolError)

Raised when acquiring a connection from the Redis pool failed.

PoolCreationError(String)

Raised when constructing the Redis pool failed.

TaskFailed(String)

Raised when the task finished with a failure state.

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 CeleryError

fn from(source: BackendError) -> Self

Converts to this type from the input type.

impl From<Error> for BackendError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<PoolError<RedisError>> for BackendError

fn from(source: PoolError) -> Self

Converts to this type from the input type.

impl From<RedisError> for BackendError

fn from(source: RedisError) -> Self

Converts to this type from the input type.