Interface LifecycleHandler

src/lifecycle.rs:14–28

#[async_trait]
pub trait LifecycleHandler: Send {
    /// Called after the child process has been spawned, allowing the current process to send state
    /// to the child process. The child process can receive this data by calling
    /// `receive_from_old_process`.
    async fn send_to_new_process(&mut self, _write_pipe: PipeWriter) -> io::Result<()> {
        Ok(())
    }

    /// Called before the child process has been spawned.
    async fn pre_new_process(&mut self) {}

    /// Called after `send_to_new_process` if the child process fails to start successfully.
    /// This gives you an opportunity to undo any state changes made in `send_to_new_process`.
    async fn new_process_failed(&mut self) {}
}

/// A default implementation of LifecycleHandler that does nothing in response to lifecycle events.
pub struct NullLifecycleHandler;