ibc-relayer 0.32.2

Implementation of an IBC Relayer in Rust, as a library 
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use crate::util::retry::{clamp_total, ConstantGrowth};
use core::time::Duration;

/// A basic worker retry strategy.
///
/// The backoff delay is initially 200ms and grows
/// by 100ms at each step. The backoff delay is
/// capped at 500ms.
/// The overall amount of time spent backing off
/// is capped to 2 seconds.
/// See the `default_strategy` test below.
pub fn worker_default_strategy() -> impl Iterator<Item = Duration> {
    let strategy = ConstantGrowth::new(Duration::from_millis(200), Duration::from_millis(100));
    clamp_total(strategy, Duration::from_millis(500), Duration::from_secs(2))
}

#[cfg(test)]
mod tests {
    use std::time::Duration;

    use crate::worker::retry_strategy::worker_default_strategy;

    #[test]
    fn default_strategy() {
        let strategy = worker_default_strategy();
        let delays = strategy.take(10).collect::<Vec<_>>();
        // This strategy has exactly 6 retry steps
        assert_eq!(
            delays,
            vec![
                Duration::from_millis(200),
                Duration::from_millis(300),
                Duration::from_millis(400),
                Duration::from_millis(500),
                Duration::from_millis(500),
                Duration::from_millis(100),
            ]
        );
    }
}