Struct tracing_subscriber::layer::Identity
source · [−]pub struct Identity { /* private fields */ }
Expand description
A layer that does nothing.
Implementations
Trait Implementations
sourceimpl<S: Subscriber> Layer<S> for Identity
impl<S: Subscriber> Layer<S> for Identity
sourcefn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest
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
. Read more
sourcefn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool
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
. Read more
sourcefn new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)
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
. Read more
sourcefn on_record(&self, _span: &Id, _values: &Record<'_>, _ctx: Context<'_, S>)
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
. Read more
sourcefn on_follows_from(&self, _span: &Id, _follows: &Id, _ctx: Context<'_, S>)
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
. Read more
sourcefn on_event(&self, _event: &Event<'_>, _ctx: Context<'_, S>)
fn on_event(&self, _event: &Event<'_>, _ctx: Context<'_, S>)
Notifies this layer that an event has occurred.
sourcefn on_enter(&self, _id: &Id, _ctx: Context<'_, S>)
fn on_enter(&self, _id: &Id, _ctx: Context<'_, S>)
Notifies this layer that a span with the given ID was entered.
sourcefn on_exit(&self, _id: &Id, _ctx: Context<'_, S>)
fn on_exit(&self, _id: &Id, _ctx: Context<'_, S>)
Notifies this layer that the span with the given ID was exited.
sourcefn on_close(&self, _id: Id, _ctx: Context<'_, S>)
fn on_close(&self, _id: Id, _ctx: Context<'_, S>)
Notifies this layer that the span with the given ID has been closed.
sourcefn on_id_change(&self, _old: &Id, _new: &Id, _ctx: Context<'_, S>)
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. Read more
sourcefn and_then<L>(self, layer: L) -> Layered<L, Self, S> where
L: Layer<S>,
Self: Sized,
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
. Read more
sourcefn with_subscriber(self, inner: S) -> Layered<Self, S> where
Self: Sized,
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
. Read more
Auto Trait Implementations
impl RefUnwindSafe for Identity
impl Send for Identity
impl Sync for Identity
impl Unpin for Identity
impl UnwindSafe for Identity
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more