Enum HostEffectFailureKind 

pub enum HostEffectFailureKind {
    TransportExhausted,
    ProtocolError,
    StorageUnavailable,
    PermissionDenied,
    ResourceExhausted,
    Unknown,
}

The stable, cross-effect executor failure classification (§7.9).

Six values, closed, and the same six for every effect kind. This is the whole of what a host may say about why an effect did not happen: a vendor’s own error taxonomy — rate_limited, overloaded, service_unavailable, context_length_exceeded, 429, 503 — has no representation here and must be folded into one of these before it reaches the kernel. That fold is the host’s job precisely because the alternative is core reading raw vendor strings, which is how one provider’s wording silently became another provider’s recovery policy (§22.8).

Deliberately not here:

• cancellation — that is HostControl::Cancel, never an effect failure;
• provider context overflow — that is ProviderOutcome::ContextOverflow, a semantic success outcome the kernel recovers from, not a transport failure;
• rate limiting and transient unavailability — the host retries those against its own ladder and reports Self::TransportExhausted only once the ladder is spent. A distinct rate_limited code would be an invitation for the kernel to run a back-off it cannot see the inputs to, which is the redispatch DEC-5 deletes.

Variants

TransportExhausted

The host exhausted its own transport retry ladder. The kernel never saw the backoff, and this is the only code a spent rate-limit or unavailable ladder may arrive as.

ProtocolError

The host cannot execute this effect at all — unknown kind included. DEC-7 makes answering with this code an obligation: dropping the effect or busy-waiting on it is a contract violation, and it is why an if/else-if chain without a final else is not a legal main loop.

StorageUnavailable

PermissionDenied

ResourceExhausted

Unknown

Implementations

impl HostEffectFailureKind

pub const ALL: [Self; 6]

pub fn as_str(self) -> &'static str

Trait Implementations

impl Clone for HostEffectFailureKind

fn clone(&self) -> HostEffectFailureKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HostEffectFailureKind

impl Debug for HostEffectFailureKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HostEffectFailureKind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for HostEffectFailureKind

impl Hash for HostEffectFailureKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for HostEffectFailureKind

fn cmp(&self, other: &HostEffectFailureKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for HostEffectFailureKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for HostEffectFailureKind

fn partial_cmp(&self, other: &HostEffectFailureKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for HostEffectFailureKind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for HostEffectFailureKind