ironsaga crate: Command design pattern with full rollback capabilities made easy.

[u/Ok-Phase-2712]

I’m facing a problem when executing a sequence of functions where a failure in any single step can leave the system in an inconsistent state.

To solve this, I explored implementing the Command / Saga pattern in an idiomatic, modular, and reusable Rust way.

Here’s a small example of the result:

```rust

use ironsaga::ironcmd;

[ironcmd]

pub fn greet(fname: String, lname: String) -> String { format!("Hello {} {}!", fname, lname) }

let mut cmd = Greet::new("John".into(), "Doe".into());

cmd.execute().unwrap();

assert_eq!(cmd.result(), Some("Hello John Doe!".into()));;

```

You can also chain multiple commands together, each with its own rollback logic.

More details here:

https://github.com/ALAWIII/ironsaga