Struct actix_web_lab::middleware::CatchPanic

#[non_exhaustive]
pub struct CatchPanic;

A middleware to catch panics in wrapped handlers and middleware, returning empty 500 responses.

This middleware should never be used as replacement for proper error handling. See this thread for historical discussion on why Actix Web does not do this by default.

It is recommended that this middleware be registered last. That is, wraped after everything else except Logger.

Examples

use actix_web_lab::middleware::CatchPanic;

App::new().wrap(CatchPanic::default())

use actix_web::middleware::{Logger, NormalizePath};
use actix_web_lab::middleware::CatchPanic;

// recommended wrap order
App::new()
    .wrap(NormalizePath::default())
    .wrap(CatchPanic::default()) // <- after everything except logger
    .wrap(Logger::default())

Trait Implementations

impl Clone for CatchPanic

fn clone(&self) -> CatchPanic

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CatchPanic

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

Formats the value using the given formatter.

impl Default for CatchPanic

fn default() -> CatchPanic

Returns the “default value” for a type.

impl<S, B> Transform<S, ServiceRequest> for CatchPanic

where S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,

type Response = ServiceResponse<B>

Responses produced by the service.

type Error = Error

Errors produced by the service.

type Transform = CatchPanicMiddleware<S>

The TransformService value created by this factory

type InitError = ()

Errors produced while building a transform service.

type Future = Ready<Result<<CatchPanic as Transform<S, ServiceRequest>>::Transform, <CatchPanic as Transform<S, ServiceRequest>>::InitError>>

The future response value.

fn new_transform(&self, service: S) -> Self::Future

Creates and returns a new Transform component, asynchronously