Struct ChildSpec

pub struct ChildSpec {
    pub id: String,
    pub restart: Restart,
    pub spawn_fn: SpawnFn,
    pub backoff_fn: Option<ChildBackoffFn>,
    pub reset_after: Option<Duration>,
}

Defines how to spawn and manage a single child actor.

Fields

id: String

Unique child ID string that must be provided. This will be used as:

1. The actor’s global registry name
2. Key for failure tracking
3. Child specification identifier

Important

This ID must be unique within the supervisor’s child list and will be used to register the actor in the global registry via ractor::registry.

restart: Restart

Restart policy for this child. Restart::Permanent, Restart::Transient, Restart::Temporary.

spawn_fn: SpawnFn

The user-defined spawn closure. If this fails, meltdown is triggered if repeated too often.

backoff_fn: Option<ChildBackoffFn>

A child-level backoff function. If set, this can delay re-spawning the child after a crash.

reset_after: Option<Duration>

Optional child-level meltdown “reset.” If the child hasn’t failed in the reset_after duration, we reset this child’s failure count to 0 next time it fails.

Trait Implementations

impl Clone for ChildSpec

fn clone(&self) -> ChildSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChildSpec

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.