Struct SpanGuard 

pub struct SpanGuard { /* private fields */ }

RAII guard for an in-flight span; finalizes and records the span on drop.

Implementations

impl SpanGuard

pub fn context(&self) -> &SpanContext

Borrowed span context (trace, span, and parent ids).

pub fn trace_id(&self) -> TraceId

Trace id this span belongs to.

pub fn span_id(&self) -> SpanId

Unique id of this span.

pub fn set_attribute(&mut self, key: &str, value: Value)

Attach a key/value attribute to the span.

pub fn add_event(&mut self, name: &str)

Record a named, timestamped event on the span.

pub fn set_error(&mut self, message: &str)

Mark the span as failed with the given error message.

Trait Implementations

impl Drop for SpanGuard

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.