Enum DurabilityError 

pub enum DurabilityError {
    Store(StoreError),
    NonDeterminism(NonDeterminismError),
    HistoryShape {
        reason: String,
    },
    SearchAttribute(SearchAttributeError),
    EngineTaskEpochClosed {
        reason: String,
    },
    RunSuperseded {
        workflow_id: WorkflowId,
        run_id: RunId,
    },
}

Errors returned by durability recording, replay, and recovery operations.

Variants

Store(StoreError)

The backing event store rejected or failed a durability operation.

NonDeterminism(NonDeterminismError)

Replay detected that workflow code no longer matches recorded history.

HistoryShape

Recorded history is malformed or internally inconsistent.

Fields

reason: String

Human-readable description of the malformed recorded history.

SearchAttribute(SearchAttributeError)

A search attribute update did not satisfy the registered schema.

EngineTaskEpochClosed

A durable write was refused because this engine’s task epoch has closed.

🔴 DELIBERATELY NOT crate::EngineError::EngineTaskEpochClosed. That variant carries a documented single-construction-site invariant — aion-client’s map_engine_error gives it no arm on the stated ground that it is unreachable through any transport-exposed operation — and a second construction site would silently take that transport’s catch-all. This is a different layer with a different audience: it surfaces as {error, _} inside running workflow code, never over the wire.

Fields

reason: String

What was refused, and what it means for the run.

RunSuperseded

A durable write was refused because it was offered on behalf of a run whose generation the history has already moved past (aion#213).

Continue-as-new does not stop the predecessor’s process at the instant its terminal lands — the API path never touches the pid, and the NIF path’s cancel_pid follows the append — so a run that is durably over can still reach its recorder with work it had already begun. Sequencing that append would put a TimerStarted (or an activity record, or a signal) for a dead run inside the SUCCESSOR’s segment, where replay reads it as the successor’s own. Nothing is appended, and the run this names is over: the refusal is the correct outcome, not a fault to retry.

Fields

workflow_id: WorkflowId

Workflow whose history the append was offered into.

run_id: RunId

The superseded run the append was offered on behalf of.

Trait Implementations

impl Debug for DurabilityError

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

Formats the value using the given formatter.

impl Display for DurabilityError

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

Formats the value using the given formatter.

impl Error for DurabilityError

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<DurabilityError> for EngineError

fn from(source: DurabilityError) -> Self

Converts to this type from the input type.

impl From<DurabilityError> for NifContextError

fn from(source: DurabilityError) -> Self

Converts to this type from the input type.

impl From<DurabilityError> for WorkloopError

fn from(source: DurabilityError) -> Self

Converts to this type from the input type.

impl From<NonDeterminismError> for DurabilityError

fn from(source: NonDeterminismError) -> Self

Converts to this type from the input type.

impl From<SearchAttributeError> for DurabilityError

fn from(source: SearchAttributeError) -> Self

Converts to this type from the input type.

impl From<StoreError> for DurabilityError

fn from(source: StoreError) -> Self

Converts to this type from the input type.