Struct SpanHandle 

pub struct SpanHandle<T>(/* private fields */);

Immutable handle of Span.

Implementations

impl<T> SpanHandle<T>

pub fn is_sampled(&self) -> bool

Returns true if this span is sampled (i.e., being traced).

pub fn context(&self) -> Option<&SpanContext<T>>

Returns the context of this span.

pub fn get_baggage_item(&self, name: &str) -> Option<&BaggageItem>

Gets the baggage item that has the name name.

pub fn child<N, F>(&self, operation_name: N, f: F) -> Span<T>

where N: Into<Cow<'static, str>>, T: Clone, F: FnOnce(StartSpanOptions<'_, AllSampler, T>) -> Span<T>,

Starts a ChildOf span if this span is sampled.

pub fn follower<N, F>(&self, operation_name: N, f: F) -> Span<T>

where N: Into<Cow<'static, str>>, T: Clone, F: FnOnce(StartSpanOptions<'_, AllSampler, T>) -> Span<T>,

Starts a FollowsFrom span if this span is sampled.

Trait Implementations

impl<T: Clone> Clone for SpanHandle<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for SpanHandle<T>

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

Formats the value using the given formatter.