Enum SpanKind 

pub enum SpanKind {
    Span,
    Generation,
    Event,
    Agent,
    Tool,
    Chain,
    Retriever,
    Embedding,
    Guardrail,
}

Type of an observation. Aligned with Langfuse’s ObservationType enum so values cross-walk directly. See spec §4.1.

Variants

Span

Generic span (chains, custom blocks).

Generation

LLM generation. Has a Some(generation) payload.

Event

Discrete event (no duration semantics).

Agent

Agent-loop span.

Tool

Tool execution.

Chain

Logical chain block.

Retriever

Retriever step.

Embedding

Embedding step.

Guardrail

Guardrail / safety check.

Trait Implementations

impl Clone for SpanKind

fn clone(&self) -> SpanKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpanKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SpanKind

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for SpanKind

fn eq(&self, other: &SpanKind) -> 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 SpanKind

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 SpanKind

impl Eq for SpanKind

impl StructuralPartialEq for SpanKind