Trait opentelemetry::labels::Encoder

pub trait Encoder: Debug {
    fn encode(&self, labels: &mut dyn Iterator<Item = (&Key, &Value)>) -> String;
    fn id(&self) -> EncoderId;
}

This is supported on crate feature metrics only.

Encoder is a mechanism for serializing a label set into a specific string representation that supports caching, to avoid repeated serialization. An example could be an exporter encoding the label set into a wire representation.

Required methods

fn encode(&self, labels: &mut dyn Iterator<Item = (&Key, &Value)>) -> String

Encode returns the serialized encoding of the label set using its Iterator. This result may be cached.

fn id(&self) -> EncoderId

A value that is unique for each class of label encoder. Label encoders allocate these using new_encoder_id.

Implementors

impl Encoder for DefaultLabelEncoder

fn encode(&self, labels: &mut dyn Iterator<Item = (&Key, &Value)>) -> String

fn id(&self) -> EncoderId