Struct polkadot_node_subsystem::jaeger::PerLeafSpan

pub struct PerLeafSpan { /* private fields */ }

A special “per leaf span”.

Essentially this span wraps two spans:

1. The span that is created per leaf in the overseer.
2. Some child span of the per-leaf span.

This just works as auxiliary structure to easily store both.

Implementations

impl PerLeafSpan

pub fn new(leaf_span: Arc<Span>, name: &'static str) -> PerLeafSpan

Creates a new instance.

Takes the leaf_span that is created by the overseer per leaf and a name for a child span. Both will be stored in this object, while the child span is implicitly accessible by using the Deref implementation.

pub fn leaf_span(&self) -> &Arc<Span>

Returns the leaf span.

Methods from Deref<Target = Span>

pub fn child(&self, name: &'static str) -> Span

Derive a child span from self.

pub fn is_enabled(&self) -> bool

Check whether jaeger is enabled in order to avoid computational overhead.

pub fn trace_id(&self) -> Option<u128>

Obtain the trace identifier for this set of spans.

Trait Implementations

impl Debug for PerLeafSpan

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

Formats the value using the given formatter.

impl Deref for PerLeafSpan

Returns a reference to the child span.

type Target = Span

The resulting type after dereferencing.

fn deref(&self) -> &Span

Dereferences the value.