Struct RequestExtensions 

pub struct RequestExtensions(/* private fields */);

Type-safe, request-scoped extension container.

Keyed by TypeId, so only one value per concrete type is stored. Use private newtypes to avoid collisions between independent filters.

Implementations

impl RequestExtensions

pub fn new() -> Self

Create an empty extension container.

pub fn insert<T: Send + Sync + 'static>(&mut self, val: T)

Insert a typed value, replacing any previous value of the same type.

pub fn get<T: Send + Sync + 'static>(&self) -> Option<&T>

Get a shared reference to a stored value by type.

pub fn get_mut<T: Send + Sync + 'static>(&mut self) -> Option<&mut T>

Get an exclusive reference to a stored value by type.

pub fn get_or_insert_with<T: Send + Sync + 'static>( &mut self, f: impl FnOnce() -> T, ) -> &mut T

Get an exclusive reference to a stored value, inserting a default computed by f if absent.

Panics

Cannot panic in practice: the value was just inserted with the correct type. The expect guards against impossible TypeId collisions in the standard library.

pub fn remove<T: Send + Sync + 'static>(&mut self) -> Option<T>

Remove a stored value by type, returning it if present.

Trait Implementations

impl Default for RequestExtensions

fn default() -> RequestExtensions

Returns the “default value” for a type.