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README.md |
README.md
retry-error
An error attempt to represent multiple failures.
This crate implements [RetryError
], a type to use when you
retry something a few times, and all those attempts can fail differently
each time. Instead of returning only a single error, it records
all of the errors received, in case they are different.
This crate is developed as part of Arti, a project to implement Tor in Rust. It's used by higher-level crates that retry operations.
Example
use retry_error::RetryError;
fn some_operation() -> anyhow::Result<bool> {
unimplemented!(); // example
}
fn example() -> Result<(), RetryError<anyhow::Error>> {
const N_ATTEMPTS: usize = 10;
let mut err = RetryError::in_attempt_to("perform an example operation");
for _ in 0..N_ATTEMPTS {
match some_operation() {
Ok(val) => return Ok(()),
Err(e) => err.push(e),
}
}
// All attempts failed; return all the errors.
return Err(err);
}
License: MIT OR Apache-2.0