Struct aws_smithy_client::erase::DynMiddleware

#[non_exhaustive]
pub struct DynMiddleware<C>(/* private fields */);

A Smithy middleware that uses dynamic dispatch.

This type allows you to pay a small runtime cost to avoid having to name the exact middleware you’re using anywhere you want to hold a Client. Specifically, this will use Box to enable dynamic dispatch for every request that goes through the middleware, which increases memory pressure and suffers an additional vtable indirection for each request, but is unlikely to matter in all but the highest-performance settings.

Implementations

impl<C> DynMiddleware<C>

pub fn new<M: SmithyMiddleware<C> + Send + Sync + 'static>( middleware: M ) -> Self

Construct a new dynamically-dispatched Smithy middleware.

Trait Implementations

impl<C> Clone for DynMiddleware<C>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<C> Debug for DynMiddleware<C>

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

Formats the value using the given formatter.

impl<C> Layer<DispatchService<C>> for DynMiddleware<C>

type Service = BoxCloneService<Request, Response, SendOperationError>

The wrapped service

fn layer(&self, inner: DispatchService<C>) -> Self::Service

Wrap the given service with the middleware, returning a new service that has been decorated with the middleware.