Trait MetadataExt 

pub trait MetadataExt<T> {
    type Error;

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

Task metadata extension trait and implementations. This trait allows for injecting and extracting metadata associated with tasks.

Required Associated Types

type Error

The error type that can occur during extraction or injection.

Required Methods

fn extract(&self) -> Result<T, Self::Error>

Extract metadata of type T.

fn inject(&mut self, value: T) -> Result<(), Self::Error>

Inject metadata of type T.

Implementations on Foreign Types

impl<T> MetadataExt<T> for Map<String, Value>

where T: Serialize + DeserializeOwned,

Available on crate feature json only.

type Error = Error

fn extract(&self) -> Result<T, Error>

fn inject(&mut self, value: T) -> Result<(), Error>

Implementors

impl<T: Clone + Send + Sync + 'static> MetadataExt<T> for Extensions

type Error = MissingDataError