Struct ExternalSpan 

pub struct ExternalSpan {
    pub trace_id: String,
    pub span_id: String,
    pub parent_span_id: Option<String>,
    pub name: String,
    pub kind: Option<String>,
    pub model: Option<String>,
    pub started_at: String,
    pub ended_at: String,
    pub status: String,
    pub attributes: Map<String, Value>,
    pub input: Option<Value>,
    pub output: Option<Value>,
}

A finished span produced by another tracer: an OpenTelemetry exporter or a framework callback. IDs, timing and parent links come from that tracer, so Bench rebuilds the agent/model/tool tree the framework actually executed. This is the framework-agnostic path to SDK-first discovery.

Fields

trace_id: String

32 lowercase hex characters.

span_id: String

16 lowercase hex characters.

parent_span_id: Option<String>

name: String

kind: Option<String>

LLM | TOOL | CHAIN | RETRIEVER | AGENT | EMBEDDING; inferred from GenAI attributes when None.

model: Option<String>

started_at: String

RFC 3339 timestamps from the original tracer.

ended_at: String

status: String

“ok” (default) or “error”.

attributes: Map<String, Value>

input: Option<Value>

output: Option<Value>

Trait Implementations

impl Clone for ExternalSpan

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for ExternalSpan

fn default() -> Self

Returns the “default value” for a type.