Struct actix_web_lab::middleware::CatchPanic

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#[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())
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§

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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 CatchPanic
where 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

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Blanket Implementations§

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impl<T> Any for T
where 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 T
where 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 T
where 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> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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 T
where 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where 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 T
where 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 T
where 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 T
where 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