Struct Span 

pub struct Span { /* private fields */ }

Available on crate feature tracing only.

An entered span which will exit on drop.

Implementations

impl Span

pub fn disabled() -> Self

Create a disabled span.

pub fn from_entered(span: EnteredSpan) -> Self

Wrap an entered span from the tracing crate.

pub fn record<V>(&self, field: &str, value: V) -> &Self

where V: Value,

Record a single field to take value.

Panics

If the field name wasn’t mentioned when the span was created.

impl Span

pub fn into_scope<T>(self, f: impl FnOnce() -> T) -> T

Execute f in with this span active, consuming it.

Trait Implementations

impl Clone for Span

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.