Enum UnknownModelPolicy 

pub enum UnknownModelPolicy {
    Allow,
    FailClosed,
    Alert,
}

The unknown-model pricing policy (DW-AI-03 ai.unknown_model_policy): what the gateway does when a provider model has no entry in the ai.pricing table. The default (allow) preserves the original fail-open behavior (cost 0, never a crash); fail_closed rejects the response with 403 ai_unknown_model_pricing so an unpriced model cannot serve traffic silently; alert proceeds with cost 0 but logs a WARN and increments dwara_ai_unknown_pricing_total{model} for observability without blocking the call.

Variants

Allow

Proceed with cost 0 (the original fail-open behavior). A misconfigured price table must not 500 a request.

FailClosed

Reject the response with 403 ai_unknown_model_pricing when the model has no pricing entry. The provider call has already been made (cost is computed from the response usage), but the response is not returned to the client — the unpriced model cannot serve traffic silently.

Alert

Proceed with cost 0 but log a WARN and increment the dwara_ai_unknown_pricing_total{model} metric. The call succeeds; the metric and log surface the gap for operators.

Trait Implementations

impl Clone for UnknownModelPolicy

fn clone(&self) -> UnknownModelPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnknownModelPolicy

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

Formats the value using the given formatter.

impl Default for UnknownModelPolicy

fn default() -> UnknownModelPolicy

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for UnknownModelPolicy

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for UnknownModelPolicy

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for UnknownModelPolicy

fn eq(&self, other: &UnknownModelPolicy) -> 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 Serialize for UnknownModelPolicy

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for UnknownModelPolicy

impl Eq for UnknownModelPolicy

impl StructuralPartialEq for UnknownModelPolicy