Trait ExtractFromTextMap 

pub trait ExtractFromTextMap<T>: Sized
where
    T: TextMap,
{
    // Required method
    fn extract_from_text_map(carrier: &T) -> Result<Option<SpanContext<Self>>>;
}

This trait allows to extract SpanContext from TextMap.

Required Methods

fn extract_from_text_map(carrier: &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