Enum StorageError 

pub enum StorageError {
    Validation(String),
    NotFound(String),
    AlreadyExists(String),
    VersionConflict {
        expected: u64,
        actual: u64,
    },
    PendingSelectionConflict {
        expected_ids: Vec<String>,
        actual_ids: Vec<String>,
    },
    Io(String),
    CommitUnknown(String),
    Serialization(String),
}

Errors returned by storage operations.

Variants

Validation(String)

The provided input violates a storage-level invariant.

NotFound(String)

The requested entity was not found.

AlreadyExists(String)

An entity with the given key already exists.

VersionConflict

Optimistic concurrency conflict.

Fields

expected: u64

The version the caller expected.

actual: u64

The actual current version.

PendingSelectionConflict

Pending freeze selected a different set of pending ids than the caller prepared against.

Fields

expected_ids: Vec<String>

Pending ids selected by the caller before attempting freeze.

actual_ids: Vec<String>

Pending ids selected inside the backend transaction.

Io(String)

An I/O error occurred.

CommitUnknown(String)

The operation may have committed durably, but the caller cannot know whether follow-up promotion/cache work completed.

Serialization(String)

A serialization or deserialization error occurred.

Trait Implementations

impl Debug for StorageError

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

Formats the value using the given formatter.

impl Display for StorageError

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

Formats the value using the given formatter.

impl Error for StorageError

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<StorageError> for CommitError

fn from(source: StorageError) -> Self

Converts to this type from the input type.