Struct Subscription 

pub struct Subscription { /* private fields */ }

RAII handle for a registered change-notification handler.

Returned by HotReloadConfig::on_change / HotReloadHandle::on_change. Drop the Subscription to unregister the handler. The watcher itself outlives any individual subscription — multiple subscriptions can come and go without touching the underlying HotReloadConfig.

Example

use config_lib::hot_reload::{HotReloadConfig, ConfigChangeEvent};

let hot = HotReloadConfig::from_file("app.conf")?;
let _subscription = hot.on_change(|event: &ConfigChangeEvent| {
    println!("config changed: {event:?}");
});
// Drop `_subscription` (e.g. at end of scope) to unregister.

Implementations

impl Subscription

pub fn forget(self)

Detach the subscription from its drop-based unregistration hook. The handler stays registered for the lifetime of the underlying watcher (until the HotReloadConfig or HotReloadHandle that produced it is dropped).

Useful for global / process-lifetime handlers where the caller has no convenient owning scope to hold the Subscription.

Trait Implementations

impl Debug for Subscription

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

Formats the value using the given formatter.

impl Drop for Subscription

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.