Trait MaybeError

Source

pub trait MaybeError {
    // Required methods
    fn from_err(err: impl Error + 'static) -> Self;
    fn err(&self) -> Option<DynamoError>;

    // Provided methods
    fn is_ok(&self) -> bool { ... }
    fn is_err(&self) -> bool { ... }
}

Expand description

A trait for types that may contain error information.

This trait allows a type to represent either a successful value or an error state. It integrates with DynamoError for structured error information.

§Example

use dynamo_runtime::protocols::maybe_error::MaybeError;
use dynamo_runtime::error::DynamoError;

struct MyResponse {
    data: Option<String>,
    error: Option<DynamoError>,
}

impl MaybeError for MyResponse {
    fn from_err(err: impl std::error::Error + 'static) -> Self {
        MyResponse {
            data: None,
            error: Some(DynamoError::from(
                Box::new(err) as Box<dyn std::error::Error + 'static>
            )),
        }
    }

    fn err(&self) -> Option<DynamoError> {
        self.error.clone()
    }
}