Trait opentelemetry::propagation::Extractor

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

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

Required Methods§

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

Get a value from a key from the underlying data.

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

Collect all the keys from the underlying data.

Implementations on Foreign Types§

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

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

Get a value for a key from the HashMap.

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

Collect all the keys from the HashMap.

Implementors§