Enum LockError 

#[non_exhaustive]
pub enum LockError {
    Poisoned(String),
    AcquireFailed(String),
    ReleaseFailed(String),
    Expired(String),
    Busy(String),
    Other(String),
}

Error type for lock operations.

Each variant carries a retry classification via LockError::kind: contention and lease loss are transient (retry the acquire), whereas a poisoned primitive is a process-fatal invariant violation that retrying cannot clear.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Poisoned(String)

The underlying lock primitive was poisoned (e.g. a thread panicked while holding it).

AcquireFailed(String)

Failed to acquire the lock.

ReleaseFailed(String)

Failed to release the lock.

Expired(String)

The lock expired (e.g. a distributed lock TTL elapsed).

Busy(String)

A transient backend condition (e.g. SQLite SQLITE_BUSY/SQLITE_LOCKED or a pool-acquire timeout) prevented the operation. Retrying may succeed.

Other(String)

Any other lock error.

Implementations

impl LockError

pub fn kind(&self) -> RetryClass

Classify this error for retry purposes.

Poisoned is permanent — a poisoned primitive signals a broken invariant that a retry cannot clear. Contention (AcquireFailed, Busy), lease loss (Expired), and transient release failures are retryable. Other is conservatively retryable: an unclassified lock failure is more often transient infrastructure than a deterministic bug, and at-least-once semantics make a redundant retry safe.

pub fn is_retryable(&self) -> bool

Whether this error is retryable.

Trait Implementations

impl Clone for LockError

fn clone(&self) -> LockError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LockError

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

Formats the value using the given formatter.

impl Display for LockError

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

Formats the value using the given formatter.

impl Eq for LockError

impl Error for LockError

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<LockError> for RepositoryError

fn from(err: LockError) -> Self

Converts to this type from the input type.

impl From<LockError> for TableStoreError

fn from(err: LockError) -> Self

Converts to this type from the input type.

impl PartialEq for LockError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LockError