Struct Stack

pub struct Stack<Inner, Outer> { /* private fields */ }

Two Layers chained together.

Examples

use tower_layer::{Stack, layer_fn, Layer};

let inner = layer_fn(|service| service+2);
let outer = layer_fn(|service| service*2);

let inner_outer_stack = Stack::new(inner, outer);

// (4 + 2) * 2 = 12
// (4 * 2) + 2 = 10
assert_eq!(inner_outer_stack.layer(4), 12);

Implementations

impl<Inner, Outer> Stack<Inner, Outer>

pub const fn new(inner: Inner, outer: Outer) -> Self

Creates a new Stack.

Examples

use tower_layer::{Stack, Identity};

let stack = Stack::new(Identity::new(), Identity::new());

Trait Implementations

impl<Inner: Clone, Outer: Clone> Clone for Stack<Inner, Outer>

fn clone(&self) -> Stack<Inner, Outer>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Inner, Outer> Debug for Stack<Inner, Outer>

where Inner: Debug, Outer: Debug,

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

Formats the value using the given formatter.

impl<S, Inner, Outer> Layer<S> for Stack<Inner, Outer>

where Inner: Layer<S>, Outer: Layer<Inner::Service>,

type Service = <Outer as Layer<<Inner as Layer<S>>::Service>>::Service

The wrapped service

fn layer(&self, service: S) -> Self::Service

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