Struct ChildBackoffFn 

pub struct ChildBackoffFn(pub Arc<dyn Fn(&str, usize, Instant, Option<Duration>) -> Option<Duration> + Send + Sync>);

A function pointer for computing child-level backoff delays before re-spawning a child.

This function is invoked each time a child fails:

(child_id, current_restart_count, last_fail_instant, reset_after)
   -> Option<Duration>

If you return Some(duration), the supervisor will wait that amount of time before actually re-spawning the child. If None, it restarts immediately.

Tuple Fields

0: Arc<dyn Fn(&str, usize, Instant, Option<Duration>) -> Option<Duration> + Send + Sync>

Implementations

impl ChildBackoffFn

pub fn new<F>(func: F) -> Self

where F: Fn(&str, usize, Instant, Option<Duration>) -> Option<Duration> + Send + Sync + 'static,

Create a new ChildBackoffFn from a closure.

Example

let backoff_fn = ChildBackoffFn::new(|child_id, restart_count, last_restart, reset_after| {
    // Your backoff logic here...
    Some(Duration::from_millis(100))
});

pub fn call( &self, child_id: &str, restart_count: usize, last_restart: Instant, reset_after: Option<Duration>, ) -> Option<Duration>

Calls the inner backoff function.

Trait Implementations

impl Clone for ChildBackoffFn

fn clone(&self) -> ChildBackoffFn

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.