actix-web-thiserror

A crate that extends the [thiserror] crate functionality to automatically return a proper [actix-web] response.

Documentation

• API Documentation

Error definition

```rust use actixwebthiserror::ResponseError; use log::error; use thiserror::Error;

[derive(Debug, Error, ResponseError)]

pub enum Base64ImageError { #[response(reason = "INVALIDIMAGEFORMAT")] #[error("invalid image format")] InvalidImageFormat, #[response(reason = "INVALID_STRING")] #[error("invalid string")] InvalidString, } ```

Error implementation

rust pub async fn error_test() -> Result<HttpResponse, Error> { Err(Base64ImageError::InvalidImageFormat)? }

Error response

The reason is a string that may be given to the client in some form to explain the error, if appropriate. Here it is as an enum that can be localized.

Note: This response has been formatted by a ResponseTransform.

{ "result": 0, "reason": "INVALID_IMAGE_FORMAT" }

Error logging

The error text automatically prints to the log when the error is returned out through a http response.

Apr 23 02:19:35.211 ERRO Response error: invalid image format Base64ImageError(InvalidImageFormat), place: example/src/handler.rs:5 example::handler