Enum RunStoreError 

pub enum RunStoreError {
    NotFound(RunId),
    Duplicate(RunId),
    AssigneeDescRequired,
    AssigneeGenerationAhead {
        slot: String,
        gen: u64,
        next_generation: u64,
    },
    AssigneeSlotRequired,
    Other(String),
}

Errors surfaced by a RunStore implementation.

Variants

NotFound(RunId)

No Run exists for the given id.

Duplicate(RunId)

create was called with an id that is already stored.

AssigneeDescRequired

A9: RunStore::acquire_assignee was called without a desc. The record is mandatory, so the acquire is refused rather than stored with an empty one. The store deliberately does not name an HTTP status — the caller maps this to 400.

AssigneeGenerationAhead

A2: a record handed to RunStore::create carries a holder whose generation is above the Run’s counter G (current[slot].gen > next_generation), so it would be stored already violating current = Assigned(a) ⟹ a.gen ≤ G.

The acquire path cannot produce this — it stamps gen from the counter it just bumped — but create accepts a caller-built RunRecord with both fields public, and that is a published surface. Refused rather than stored: the violation is permanent (the next acquire stamps a lower generation than the incumbent’s, inverting the ordering G being Run-wide exists to provide) and invisible afterwards. Callers map this to 400, same as Self::AssigneeDescRequired.

Fields

slot: String

The seat whose holder is ahead of the counter.

gen: u64

That holder’s generation.

next_generation: u64

The Run counter G it was measured against.

AssigneeSlotRequired

An assignment event named no slot. Run.current is keyed by slot, so an Assign (or a Vacant) with an empty slot names no seat to write — it is refused rather than collapsed onto a "" key that no operator_ref can ever resolve to. Callers map this to 400, same as Self::AssigneeDescRequired.

Other(String)

Backend-specific failure not covered by the other variants.

Trait Implementations

impl Debug for RunStoreError

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

Formats the value using the given formatter.

impl Display for RunStoreError

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

Formats the value using the given formatter.

impl Error for RunStoreError

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.