Struct tracing_subscriber::reload::Layer

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

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

Methods

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 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 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].