Trait opentelemetry::propagation::Extractor

pub trait Extractor {
    fn get(&self, key: &str) -> Option<&str>;
    fn keys(&self) -> Vec<&str>;
}

Extractor provides an interface for removing fields from an underlying struct like HashMap

Required Methods

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

Get a value from a key from the underlying data.

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

Collect all the keys from the underlying data.

Implementations on Foreign Types

impl<S: BuildHasher> Extractor for HashMap<String, String, S>

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

Get a value for a key from the HashMap.

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

Collect all the keys from the HashMap.

Implementors