Struct WorkerStats 

pub struct WorkerStats {
    pub worker_kind: Option<String>,
    pub model: Option<String>,
    pub usage: Option<TokenUsage>,
    pub num_turns: Option<u32>,
    pub adapter_data: Option<Value>,
}

Normalized per-attempt worker statistics, reported by a worker boundary (spawner fold site / result captor / POST /v1/worker/submit) into the engine and folded into the terminal crate::store::run::StepEntry by the dispatcher.

The three named fields are the closed schema the engine knows; everything worker-kind-specific rides in Self::adapter_data as raw JSON the engine never interprets (capped at TRACE_PAYLOAD_CAP_BYTES on fold). Every field is optional — absence must never block a dispatch.

Fields

worker_kind: Option<String>

Worker kind label ("agent_block" / "subprocess" / "operator" / …) — set by whichever boundary constructed the stats, since only that boundary knows its own kind.

model: Option<String>

The model that served the attempt, when the boundary knows it (subprocess: the rendered {model} placeholder; operator: self-report; agent-block: spec-declared model if any).

usage: Option<TokenUsage>

Normalized token usage, when the boundary can produce one.

num_turns: Option<u32>

Number of LLM turns the attempt ran (agent-block num_turns).

adapter_data: Option<Value>

Worker-kind-specific raw payload (exit code, stderr tail, cache token detail, …). Observational only — the engine stores it verbatim (size-capped) and never branches on it.

Implementations

impl WorkerStats

pub fn is_empty(&self) -> bool

true when no field carries information — callers skip recording an all-empty stats value.

Trait Implementations

impl Clone for WorkerStats

fn clone(&self) -> WorkerStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WorkerStats

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

Formats the value using the given formatter.

impl Default for WorkerStats

fn default() -> WorkerStats

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for WorkerStats

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for WorkerStats

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 WorkerStats

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WorkerStats

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 WorkerStats