Trait Captured 

pub trait Captured<'a>:
    Eq
    + PartialOrd
    + Sealed {
    // Required methods
    fn metadata(&self) -> &'static Metadata<'static>;
    fn value(&self, name: &str) -> Option<&'a TracedValue>;
    fn parent(&self) -> Option<CapturedSpan<'a>>;
}

Uniting trait for CapturedSpans and CapturedEvents that allows writing generic code in cases both should be supported.

Required Methods

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

Provides a reference to the span / event metadata.

fn value(&self, name: &str) -> Option<&'a TracedValue>

Returns a value for the specified field, or None if the value is not defined.

fn parent(&self) -> Option<CapturedSpan<'a>>

Returns the reference to the parent span, if any.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<'a> Captured<'a> for CapturedEvent<'a>

impl<'a> Captured<'a> for CapturedSpan<'a>