Struct StepTrace 

pub struct StepTrace {
    pub step_id: String,
    pub index: usize,
    pub prompt: String,
    pub raw_response: String,
    pub parsed_output: StepOutput,
    pub confidence: f64,
    pub duration_ms: u64,
    pub tokens: TokenUsage,
    pub status: StepStatus,
    pub error: Option<String>,
    pub started_at: DateTime<Utc>,
    pub completed_at: Option<DateTime<Utc>>,
}

Trace of a single step execution

Fields

step_id: String

Step identifier

index: usize

Step index (0-based)

prompt: String

Actual prompt sent to LLM

raw_response: String

Raw LLM response

parsed_output: StepOutput

Parsed/structured output

confidence: f64

Step confidence score

duration_ms: u64

Step execution time in milliseconds

tokens: TokenUsage

Tokens used for this step

status: StepStatus

Step status

error: Option<String>

Error message (if failed)

started_at: DateTime<Utc>

Timestamp when step started

completed_at: Option<DateTime<Utc>>

Timestamp when step completed

Implementations

impl StepTrace

pub fn new(step_id: impl Into<String>, index: usize) -> Self

Create a new step trace

pub fn start(&mut self)

Mark step as running

pub fn complete(&mut self, output: StepOutput, confidence: f64)

Mark step as completed

pub fn fail(&mut self, error: impl Into<String>)

Mark step as failed

Trait Implementations

impl Clone for StepTrace

fn clone(&self) -> StepTrace

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StepTrace

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StepTrace

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for StepTrace

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

where __S: Serializer,

Serialize this value into the given Serde serializer.