Trait ExtractFromHttpHeader 

pub trait ExtractFromHttpHeader<'a, T>: Sized
where
    T: IterHttpHeaderFields<'a>,
{
    // Required method
    fn extract_from_http_header(
        carrier: &'a T,
    ) -> Result<Option<SpanContext<Self>>>;
}

This trait allows to extract SpanContext from HTTP header.

Required Methods

fn extract_from_http_header(carrier: &'a T) -> Result<Option<SpanContext<Self>>>

Extracts SpanContext from carrier.

If carrier contains no span context, it will return Ok(None).

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.

Implementors