Enum SpanKindHint 

#[non_exhaustive]
pub enum SpanKindHint {
    Internal,
    Producer,
    Consumer,
    Client,
    Server,
}

Compile-time hint for the OpenTelemetry span kind of a step span.

Contract: this enum is a compile-time hint supplied by the DSL compiler when a TracingProcessor step span is built; the consumer converts it to opentelemetry::trace::SpanKind once at construction. The enum is #[non_exhaustive]: variants added in the future must degrade to SpanKindHint::Internal at the consumption site, never cause a compile failure downstream.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Internal

Internal span inside a route; the default for plain process steps.

Producer

Producer span for a step that sends a message to a destination.

Consumer

Consumer span for a step that consumes a message from a source.

Client

Client span for a synchronous outbound call.

Server

Server span for a synchronous inbound handler.

Trait Implementations

impl Clone for SpanKindHint

fn clone(&self) -> SpanKindHint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SpanKindHint

impl Debug for SpanKindHint

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

Formats the value using the given formatter.

impl Default for SpanKindHint

fn default() -> SpanKindHint

Returns the “default value” for a type.

impl Eq for SpanKindHint

impl PartialEq for SpanKindHint

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SpanKindHint