Struct actix_web_lab::extract::SwapData

pub struct SwapData<T> { /* private fields */ }

A wrapper around ArcSwap that can be used as an extractor.

Can serve as a replacement for Data<RwLock<T>> in certain situations.

Currently exposes some internals of arc-swap and may change in the future.

Implementations

impl<T: Send + Sync> SwapData<T>

pub fn new(item: T) -> Self

Constructs new swappable data item.

pub fn load(&self) -> Guard<Arc<T>>

Returns a temporary access guard to the wrapped data item.

Implements Deref for read access to the inner data item.

pub fn store(&self, item: T)

Replaces the value inside this instance.

Further loads will yield the new value.

Trait Implementations

impl<T> Clone for SwapData<T>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for SwapData<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: 'static> FromRequest for SwapData<T>

type Error = Error

The associated error which can be returned.

type Future = Ready<Result<SwapData<T>, <SwapData<T> as FromRequest>::Error>>

Future that resolves to a Self.

fn from_request(req: &HttpRequest, _pl: &mut Payload) -> Self::Future

Create a Self from request parts asynchronously.

fn extract(req: &HttpRequest) -> Self::Future

Create a Self from request head asynchronously.