Struct LlmSpan 

pub struct LlmSpan {

    pub span_id: SpanId,
    pub trace_id: TraceId,
    pub parent_span_id: Option<SpanId>,
    pub name: String,
    pub provider: Provider,
    pub model: String,
    pub input: LlmInput,
    pub output: Option<LlmOutput>,
    pub token_usage: Option<TokenUsage>,
    pub cost: Option<Cost>,
    pub latency: Latency,
    pub metadata: Metadata,
    pub status: SpanStatus,
    pub attributes: HashMap<String, Value>,
    pub events: Vec<SpanEvent>,
}

Represents a single LLM operation (request/response) as an OpenTelemetry span.

Fields

span_id: SpanId

Unique span identifier

trace_id: TraceId

Trace identifier this span belongs to

parent_span_id: Option<SpanId>

Parent span identifier (if part of a chain)

name: String

Span name/operation type

provider: Provider

LLM provider

model: String

Model name

input: LlmInput

Request input (prompt)

output: Option<LlmOutput>

Response output

token_usage: Option<TokenUsage>

Token usage statistics

cost: Option<Cost>

Cost information

latency: Latency

Latency metrics

metadata: Metadata

Metadata and tags

status: SpanStatus

Span status

attributes: HashMap<String, Value>

OpenTelemetry attributes

events: Vec<SpanEvent>

Events recorded during span

Implementations

impl LlmSpan

pub fn builder() -> LlmSpanBuilder

Create a new LLM span builder.

pub fn is_success(&self) -> bool

Check if the span represents a successful operation.

pub fn is_error(&self) -> bool

Check if the span represents a failed operation.

pub fn total_tokens(&self) -> Option<u32>

Get total tokens used (if available).

pub fn total_cost_usd(&self) -> Option<f64>

Get total cost in USD (if available).

pub fn duration_ms(&self) -> u64

Get duration in milliseconds.

Trait Implementations

impl Clone for LlmSpan

fn clone(&self) -> LlmSpan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LlmSpan

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for LlmSpan

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for LlmSpan

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

where __S: Serializer,

Serialize this value into the given Serde serializer.