Struct tracing_subscriber::reload::Layer

pub struct Layer<L, S> { /* fields omitted */ }

This is supported on crate feature std only.

Wraps a Layer, allowing it to be reloaded dynamically at runtime.

Implementations

impl<L, S> Layer<L, S> where
    L: Layer<S> + 'static,
    S: Subscriber, 

pub fn new(inner: L) -> (Self, Handle<L, S>)

Wraps the given Layer, returning a Layer and a Handle that allows the inner type to be modified at runtime.

pub fn handle(&self) -> Handle<L, S>

Returns a Handle that can be used to reload the wrapped Layer.

Trait Implementations

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

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

Formats the value using the given formatter.

impl<L, S> Layer<S> for Layer<L, S> where
    L: Layer<S> + 'static,
    S: Subscriber, 

fn on_layer(&mut self, subscriber: &mut S)

Performs late initialization when attaching a Layer to a Subscriber.

fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest

Registers a new callsite with this layer, returning whether or not the layer is interested in being notified about the callsite, similarly to Subscriber::register_callsite.

fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool

Returns true if this layer is interested in a span or event with the given metadata in the current Context, similarly to Subscriber::enabled.

fn on_new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)

Notifies this layer that a new span was constructed with the given Attributes and Id.

fn on_record(&self, span: &Id, values: &Record<'_>, ctx: Context<'_, S>)

Notifies this layer that a span with the given Id recorded the given values.

fn on_follows_from(&self, span: &Id, follows: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the ID span recorded that it follows from the span with the ID follows.

fn on_event(&self, event: &Event<'_>, ctx: Context<'_, S>)

Notifies this layer that an event has occurred.

fn on_enter(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the given ID was entered.

fn on_exit(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID was exited.

fn on_close(&self, id: Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID has been closed.

fn on_id_change(&self, old: &Id, new: &Id, ctx: Context<'_, S>)

Notifies this layer that a span ID has been cloned, and that the subscriber returned a different ID.

fn and_then<L>(self, layer: L) -> Layered<L, Self, S> where
    L: Layer<S>,
    Self: Sized, 

Composes this layer around the given Layer, returning a Layered struct implementing Layer.

fn with_subscriber(self, inner: S) -> Layered<Self, S> where
    Self: Sized, 

Composes this Layer with the given Subscriber, returning a Layered struct that implements Subscriber.

fn with_filter<F>(self, filter: F) -> Filtered<Self, F, S> where
    Self: Sized,
    F: Filter<S>, 

This is supported on crate feature registry only.

Combines self with a Filter, returning a Filtered layer.