Struct MiddlewareBackend 

pub struct MiddlewareBackend { /* private fields */ }

An HttpBackend that runs an ordered chain of Middleware around an inner backend.

The first middleware in the chain runs outermost (see the module docs for ordering and composability). Purely additive: it takes effect only when a caller wraps their backend in it and installs it via Client::with_backend.

Implementations

impl MiddlewareBackend

pub fn new(inner: Arc<dyn HttpBackend>) -> Self

Start a chain around inner with no middlewares; add them with Self::layer.

pub fn with_middlewares( inner: Arc<dyn HttpBackend>, middlewares: Vec<Arc<dyn Middleware>>, ) -> Self

Wrap inner with a pre-built ordered list of middlewares (index 0 runs outermost).

pub fn layer(self, middleware: Arc<dyn Middleware>) -> Self

Append a middleware to the chain and return self, for builder-style construction. Each appended middleware runs inside the ones added before it (the first added is outermost).

pub fn inner(&self) -> &Arc<dyn HttpBackend>

The wrapped inner backend.

pub fn middlewares(&self) -> &[Arc<dyn Middleware>]

The middleware chain, in run order (index 0 is outermost).

Trait Implementations

impl Clone for MiddlewareBackend

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MiddlewareBackend

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

Formats the value using the given formatter.

impl HttpBackend for MiddlewareBackend

fn execute(&self, request: Request) -> ExecuteFuture<'_>

Execute a prepared request, yielding the raw response or a transport failure. A backend that fails should wrap the originating reqwest::Error via TransportError::new so [super::send] can reclassify timeouts/redirects/protocol errors into the taxonomy.