Trait Metadata 

pub trait Metadata: Sized {
    type Error;

    // Required methods
    fn extract(store: &MetadataStore) -> Result<Self, Self::Error>;
    fn inject(&self, map: &mut MetadataStore) -> Result<(), Self::Error>;
}

Implemented by types that can be stored as metadata. Provides a stable key and string-based serialization.

Required Associated Types

type Error

The error produced when extracting the Metadata

Required Methods

fn extract(store: &MetadataStore) -> Result<Self, Self::Error>

Extract Metadata from the store

fn inject(&self, map: &mut MetadataStore) -> Result<(), Self::Error>

Inject Self into the store

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Metadata for Queue

type Error = QueueError

impl Metadata for TracingContext

Available on crate feature tracing only.

type Error = TracingContextParseError