Enum DispatchRefusal 

pub enum DispatchRefusal {
    CompositionMismatch {
        expected: CompositionId,
        actual: CompositionId,
    },
    UnresolvedRoute {
        composition: CompositionId,
        instance: MachineInstanceId,
        variant: EffectVariantId,
    },
    MissingProducerField {
        route: RouteId,
        variant: EffectVariantId,
        field: FieldId,
    },
    UnwiredConsumer {
        composition: CompositionId,
        instance: MachineInstanceId,
    },
    ConsumerRefused {
        instance: MachineInstanceId,
        variant: InputVariantId,
        reason: String,
    },
}

Reasons the dispatcher refuses a routed effect.

Unlike the deleted helper path, there is no “silently drop unknown effects” arm. Every failure is a typed variant so callers and RMAT audits can enumerate them without parsing error strings.

Variants

CompositionMismatch

The producer is not registered for this dispatcher’s composition.

Fields

expected: CompositionId

actual: CompositionId

UnresolvedRoute

No input-kind route is declared for (producer.instance_id, variant).

Fields

composition: CompositionId

instance: MachineInstanceId

variant: EffectVariantId

MissingProducerField

A route-binding references a producer field that the effect body did not supply (via ProducerEffect::field).

Fields

route: RouteId

variant: EffectVariantId

field: FieldId

UnwiredConsumer

No ConsumerSurface is registered for the resolved target instance. This is a wiring bug at construction time, not a runtime signal — the dispatcher refuses rather than queueing forever.

Fields

composition: CompositionId

instance: MachineInstanceId

ConsumerRefused

The consumer surface rejected the typed input (e.g. because the consumer machine is no longer accepting inputs). The inner message is the consumer-side rejection reason and is opaque to the dispatcher — typed by the consumer’s own error.

Fields

instance: MachineInstanceId

variant: InputVariantId

reason: String

Trait Implementations

impl Clone for DispatchRefusal

fn clone(&self) -> DispatchRefusal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DispatchRefusal

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

Formats the value using the given formatter.

impl Display for DispatchRefusal

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

Formats the value using the given formatter.

impl Error for DispatchRefusal

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 DispatchRefusal

fn eq(&self, other: &DispatchRefusal) -> 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 Eq for DispatchRefusal

impl StructuralPartialEq for DispatchRefusal