Trait tracing_subscriber::registry::SpanData [−][src]
pub trait SpanData<'a> { fn id(&self) -> Id; fn metadata(&self) -> &'static Metadata<'static>; fn parent(&self) -> Option<&Id>; fn extensions(&self) -> Extensions<'_>; fn extensions_mut(&self) -> ExtensionsMut<'_>; }
Expand description
A stored representation of data associated with a span.
Required methods
fn extensions(&self) -> Extensions<'_>
fn extensions(&self) -> Extensions<'_>
Returns a reference to this span’s Extensions
.
The extensions may be used by Layer
s to store additional data
describing the span.
fn extensions_mut(&self) -> ExtensionsMut<'_>
fn extensions_mut(&self) -> ExtensionsMut<'_>
Returns a mutable reference to this span’s Extensions
.
The extensions may be used by Layer
s to store additional data
describing the span.