Struct Handle 

pub struct Handle<L, S> { /* private fields */ }

Allows modifying the state of an associated reloadable layer.

Implementations

impl<L, S> Handle<L, S>

pub fn reload_with(&self, f: impl FnOnce(&L) -> L) -> Result<(), Error>

where L: Layer<ReloadSubscriber<S>>, S: Subscriber,

Replaces the active layer with a new one.

The closure provides a reference to the active layer so if the layer implements Clone, it can be constructed that way and then modified in place.

pub fn reload(&self, layer: impl Into<L>) -> Result<(), Error>

where L: Layer<ReloadSubscriber<S>>, S: Subscriber,

Replaces the active layer with a new one.

Depending on configuration, new spans and events may still be routed to the older layer.

pub fn with_current<T>(&self, f: impl FnOnce(&L) -> T) -> Result<T, Error>

Invokes a closure with a borrowed reference to the current layer slice, returning the result.

Trait Implementations

impl<L, S> Clone for Handle<L, S>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<L: Debug, S: Debug> Debug for Handle<L, S>

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

Formats the value using the given formatter.