#[non_exhaustive]
pub struct CatchPanic;
Expand description

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

Trait Implementations§

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impl Clone for CatchPanic

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fn clone(&self) -> CatchPanic

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CatchPanic

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

Formats the value using the given formatter. Read more
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impl Default for CatchPanic

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fn default() -> CatchPanic

Returns the “default value” for a type. Read more
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impl<S, B> Transform<S, ServiceRequest> for CatchPanicwhere S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,

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type Response = ServiceResponse<B>

Responses produced by the service.
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type Error = Error

Errors produced by the service.
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type Transform = CatchPanicMiddleware<S>

The TransformService value created by this factory
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type InitError = ()

Errors produced while building a transform service.
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type Future = Ready<Result<<CatchPanic as Transform<S, ServiceRequest>>::Transform, <CatchPanic as Transform<S, ServiceRequest>>::InitError>>

The future response value.
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fn new_transform(&self, service: S) -> Self::Future

Creates and returns a new Transform component, asynchronously

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more