Trait SpanExt

pub trait SpanExt {
    // Required methods
    fn rec_str<T>(&self, field: &'static str, value: &T)
       where T: ToString;
    fn rec_opt<T>(&self, field: &'static str, value: &Option<T>)
       where T: ToString;

    // Provided method
    fn with<F>(fill: F)
       where F: Fn(Span) { ... }
}

Extensions for tracing::Span.

Required Methods

fn rec_str<T>(&self, field: &'static str, value: &T)

where T: ToString,

Records a value using ToString implementation.

fn rec_opt<T>(&self, field: &'static str, value: &Option<T>)

where T: ToString,

Records a value using ToString implementation if the option value is present.

Provided Methods

fn with<F>(fill: F)

where F: Fn(Span),

Applies the provided function to the current span.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl SpanExt for Span

fn rec_str<T>(&self, field: &'static str, value: &T)

where T: ToString,

fn rec_opt<T>(&self, field: &'static str, value: &Option<T>)

where T: ToString,

Implementors