Trait ExtractFrom 

pub trait ExtractFrom<Req: ?Sized>: Sized {
    type Error;
    type Future: Future<Output = Result<Self, Self::Error>>;

    // Required method
    fn extract_from(req: Req) -> Self::Future;
}

Required Associated Types

type Error

type Future: Future<Output = Result<Self, Self::Error>>

Required Methods

fn extract_from(req: Req) -> Self::Future

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<'a, B> ExtractFrom<Request<B>> for Bytes

where B: HttpBody + Send + 'static, B::Data: Send,

type Error = <B as Body>::Error

type Future = Pin<Box<dyn Future<Output = Result<Bytes, <Bytes as ExtractFrom<Request<B>>>::Error>> + Send>>

fn extract_from(req: Request<B>) -> Self::Future

Implementors

impl<'a, T> ExtractFrom<&'a Bytes> for Json<T>

where T: Deserialize<'a>,

type Error = Error

type Future = Ready<Result<Json<T>, <Json<T> as ExtractFrom<&'a Bytes>>::Error>>

impl<T, B> ExtractFrom<Request<B>> for Json<T>

where T: DeserializeOwned, B: HttpBody + Send + 'static, B::Data: Send,

type Error = Error<B>

type Future = Pin<Box<dyn Future<Output = Result<Json<T>, <Json<T> as ExtractFrom<Request<B>>>::Error>> + Send>>