Struct StackBuilder 

pub struct StackBuilder<T: Send + Sync + Clone + 'static> { /* private fields */ }

Fluent builder for composing messaging middleware into a handler pipeline.

Middleware is applied in the order added — the first middleware added becomes the outermost wrapper and runs first on each message.

Example

let stack = StackBuilder::new(base_handler)
    .with(retry_mw)
    .with(metrics_mw)
    .with(dedup_mw)
    .build();

Implementations

impl<T: Send + Sync + Clone + 'static> StackBuilder<T>

pub fn new(base: Arc<dyn MessageHandler<T>>) -> Self

Create a new builder wrapping the given base handler.

pub fn with<M: HandlerMiddleware<T> + 'static>(self, mw: M) -> Self

Add middleware to the stack.

Middleware is applied in the order added — the first middleware added becomes the outermost wrapper.

pub fn build(self) -> Arc<dyn MessageHandler<T>>

Build the fully-wrapped handler by applying all middleware.