Struct HeaderExtractor

pub struct HeaderExtractor<'a>(pub &'a HeaderMap);

HTTP header extractor for OpenTelemetry context propagation.

This struct implements the Extractor trait to extract OpenTelemetry trace context from HTTP headers. It wraps an HTTP header map and provides the necessary interface for propagators to extract trace context information from incoming requests.

Usage

Typically used internally by propagation functions, but can be used directly:

use http::HeaderMap;
use telemetry_rust::http::HeaderExtractor;

let headers = HeaderMap::new();
let extractor = HeaderExtractor(&headers);
// Use with OpenTelemetry propagators...

Tuple Fields

0: &'a HeaderMap

Trait Implementations

impl Extractor for HeaderExtractor<'_>

fn get(&self, key: &str) -> Option<&str>

Get a value for a key from the HeaderMap. If the value is not valid ASCII, returns None.

fn keys(&self) -> Vec<&str>

Collect all the keys from the HeaderMap.