Enum ScopeField 

pub enum ScopeField {
    TraceId(String),
    SpanId(String),
    ParentSpanId(String),
    Label(&'static str, String),
}

A field declared on obs::scope! / obs::context!. Field types match the envelope projection contract: trace ids land on the typed envelope slots, labels go into env.labels. Spec 13 § 2.1.

Variants

TraceId(String)

Pushes onto env.trace_id when missing.

SpanId(String)

Pushes onto env.span_id when missing.

ParentSpanId(String)

Pushes onto env.parent_span_id when missing.

Label(&'static str, String)

Pushes onto env.labels[name] when the key is absent.

Implementations

impl ScopeField

pub fn name(&self) -> &'static str

Field name as it would appear on a schema (for diagnostics).

pub fn value(&self) -> &str

Borrow the value’s bytes for diagnostics or SpanCtx rendering.

Trait Implementations

impl Clone for ScopeField

fn clone(&self) -> ScopeField

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScopeField

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

Formats the value using the given formatter.