use std::time::Duration;
pub trait Backoff {
fn reset(&mut self) {}
fn next_backoff(&mut self) -> Option<Duration>;
}
#[derive(Debug)]
pub struct Zero {}
impl Backoff for Zero {
fn next_backoff(&mut self) -> Option<Duration> {
Some(Duration::default())
}
}
#[derive(Debug)]
pub struct Stop {}
impl Backoff for Stop {
fn next_backoff(&mut self) -> Option<Duration> {
None
}
}
#[derive(Debug)]
pub struct Constant {
interval: Duration,
}
impl Constant {
pub fn new(interval: Duration) -> Constant {
Constant { interval }
}
}
impl Backoff for Constant {
fn next_backoff(&mut self) -> Option<Duration> {
Some(self.interval)
}
}