Enum TransitionError 

pub enum TransitionError {
    IllegalForState {
        from: HostState,
        event: &'static str,
        rollout_id: RolloutId,
        hostname: String,
    },
    SeqRegression {
        got: u64,
        last: u64,
        rollout_id: RolloutId,
        hostname: String,
    },
    Invariant(&'static str),
    Unimplemented {
        from: HostState,
        event: &'static str,
    },
}

Variants

IllegalForState

The event is not legal from the current HostState. The runtime layer should typically log + drop (lost-ordering noise) and rely on heartbeat drift-detection to recover via Replay-From (RFC-0005 §4.3).

Fields

from: HostState

event: &'static str

rollout_id: RolloutId

hostname: String

SeqRegression

Event seq is not strictly greater than last_event_seq. Could be a retransmit (idempotent, runtime dedupes on (host, rollout, seq)) or out-of-order arrival.

Fields

got: u64

last: u64

rollout_id: RolloutId

hostname: String

Invariant(&'static str)

Invariant from RFC-0005 §3 violated by the event’s payload (e.g. Converged claimed but current != target). CP rejects the event with 409 Conflict; agent retries after re-verifying.

Unimplemented

Reducer arm not yet implemented. Returned by the Phase 3a skeleton; every variant gets a real arm in Phase 3b. Should never be reached after Phase 3 closes — if it is, that’s a code defect.

Fields

from: HostState

event: &'static str

Trait Implementations

impl Clone for TransitionError

fn clone(&self) -> TransitionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransitionError

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

Formats the value using the given formatter.

impl Display for TransitionError

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

Formats the value using the given formatter.

impl Error for TransitionError

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 PartialEq for TransitionError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for TransitionError