Struct Data

pub struct Data<'a> { /* private fields */ }

Available on crate features registry and std only.

Span data stored in a Registry.

The registry stores well-known data defined by tracing: span relationships, metadata and reference counts. Additional user-defined data provided by Layers, such as formatted fields, metrics, or distributed traces should be stored in the extensions typemap.

Trait Implementations

impl<'a> Debug for Data<'a>

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

Formats the value using the given formatter.

impl<'a> SpanData<'a> for Data<'a>

fn id(&self) -> Id

Returns this span’s ID.

fn metadata(&self) -> &'static Metadata<'static>

Returns a reference to the span’s Metadata.

fn parent(&self) -> Option<&Id>

Returns a reference to the ID

fn extensions(&self) -> Extensions<'_>

Returns a reference to this span’s Extensions.

fn extensions_mut(&self) -> ExtensionsMut<'_>

Returns a mutable reference to this span’s Extensions.

fn is_enabled_for(&self, filter: FilterId) -> bool

Returns true if this span is enabled for the per-layer filter corresponding to the provided FilterId.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes