Trait MetaExtractor 

pub trait MetaExtractor<M: Metadata>:
    Send
    + Sync
    + 'static {
    // Required method
    fn extract(&self, _context: &RequestContext) -> M;
}

Metadata extractor from session data.

Required Methods

fn extract(&self, _context: &RequestContext) -> M

Extract metadata for given session

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl<M, F> MetaExtractor<M> for F

where M: Metadata, F: Fn(&RequestContext) -> M + Send + Sync + 'static,

impl<M: Metadata + Default> MetaExtractor<M> for NoopExtractor