Struct CatchUnwind

pub struct CatchUnwind;

middleware for catching panic inside Service::call and return a 500 error response.

Examples:

// handler function that cause panic.
async fn handler(_: &WebContext<'_>) -> &'static str {
    panic!("");
}

App::new()
    // request to "/" would always panic due to handler function.
    .at("/", handler_service(handler))
    // enclosed application with CatchUnwind middleware.
    // panic in handler function would be caught and converted to 500 internal server error response to client.
    .enclosed(CatchUnwind);

// CatchUnwind can also be used on individual route service for scoped panic catching:
App::new()
    .at("/", handler_service(handler))
    // only catch panic on "/scope" path.
    .at("/scope", handler_service(handler).enclosed(CatchUnwind));

Trait Implementations

impl Clone for CatchUnwind

fn clone(&self) -> CatchUnwind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Arg> Service<Arg> for CatchUnwind

where CatchUnwind: Service<Arg>,

type Response = CatchUnwindService<<CatchUnwind as Service<Arg>>::Response>

The Ok part of output future.

type Error = <CatchUnwind as Service<Arg>>::Error

The Err part of output future.

async fn call(&self, arg: Arg) -> Result<Self::Response, Self::Error>