Lib.rs

Jabba

Async dependency injection for Rust [WIP]

Example

trait TestTrait: Injectable<Error = Infallible> + Send {
  fn value(&self) -> usize;
}

struct TestStruct {
  value: usize,
}

impl TestTrait for TestStruct {
  fn value(&self) -> usize {
    self.value
  }
}

impl Injectable for TestStruct {
  type Error = Infallible;

  async fn create(_: Injector) -> Result<Self, Self::Error> {
    static COUNTER: AtomicUsize = AtomicUsize::new(42);

    tokio::time::sleep(std::time::Duration::from_secs(1)).await;

    Ok(TestStruct {
      value: COUNTER.fetch_add(1, Ordering::SeqCst),
    })
  }
}

#[tokio::main]
async fn main() {
  let injector = Injector::new();
  
  injector.bind::<dyn TestTrait, TestStruct>().await;

  let instance = injector.get::<dyn TestTrait>().await.unwrap();
  println!("instance value: {}", instance1.value());
}