Enum DeltaBackendError 

pub enum DeltaBackendError {
    NotFound(String),
    NotFoundGeneric(String),
    AlreadyExists(String),
    PermissionDenied(String),
    Unauthenticated(String),
    InvalidArgument(String),
    CommitVersionConflict(String),
    UpdateRequirementConflict(String),
    ResourceExhausted(String),
    NotImplemented(&'static str),
    Internal(String),
}

Error returned by a DeltaBackend operation.

Each variant has a fixed (StatusCode, DeltaErrorType) target, applied by DeltaApiError’s IntoResponse. A server adapter converts its internal error into one of these variants, preserving the response semantics without exposing its own error type to the crate.

Variants

NotFound(String)

The requested resource does not exist. → 404 NoSuchTableException.

NotFoundGeneric(String)

A backend failure with no recognized semantics, surfaced as a generic not-found. → 404 NotFoundException.

AlreadyExists(String)

A resource with the same identity already exists. → 409 AlreadyExistsException.

PermissionDenied(String)

The caller is authenticated but not permitted. → 403 PermissionDeniedException.

Unauthenticated(String)

The caller is not authenticated. → 401 NotAuthorizedException.

InvalidArgument(String)

The request is malformed or a parameter is invalid. → 400 InvalidParameterValueException.

CommitVersionConflict(String)

A commit lost the version race / was already accepted. → 409 CommitVersionConflictException.

UpdateRequirementConflict(String)

An assert-etag / assert-table-uuid requirement was not met. → 409 UpdateRequirementConflictException.

ResourceExhausted(String)

The request was throttled or hit a resource limit. → 429 ResourceExhaustedException.

NotImplemented(&'static str)

The requested functionality is not implemented. → 501 NotImplementedException.

Internal(String)

An unexpected backend failure. → 500 InternalServerErrorException.

Trait Implementations

impl Debug for DeltaBackendError

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

Formats the value using the given formatter.

impl Display for DeltaBackendError

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

Formats the value using the given formatter.

impl Error for DeltaBackendError

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<DeltaBackendError> for DeltaApiError

fn from(source: DeltaBackendError) -> Self

Converts to this type from the input type.