Struct tracing_subscriber::layer::Layered
source · [−]pub struct Layered<L, I, S = I> { /* private fields */ }
Expand description
A Subscriber
composed of a Subscriber
wrapped by one or more
Layer
s.
Trait Implementations
sourceimpl<S, A, B> Layer<S> for Layered<A, B, S> where
A: Layer<S>,
B: Layer<S>,
S: Subscriber,
impl<S, A, B> Layer<S> for Layered<A, B, S> where
A: Layer<S>,
B: Layer<S>,
S: Subscriber,
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
sourceimpl<'a, L, S> LookupSpan<'a> for Layered<L, S> where
S: Subscriber + LookupSpan<'a>,
impl<'a, L, S> LookupSpan<'a> for Layered<L, S> where
S: Subscriber + LookupSpan<'a>,
sourceimpl<L, S> Subscriber for Layered<L, S> where
L: Layer<S>,
S: Subscriber,
impl<L, S> Subscriber for Layered<L, S> where
L: Layer<S>,
S: Subscriber,
sourcefn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest
fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest
sourcefn max_level_hint(&self) -> Option<LevelFilter>
fn max_level_hint(&self) -> Option<LevelFilter>
Returns the highest verbosity level that this Subscriber
will
enable, or None
, if the subscriber does not implement level-based
filtering or chooses not to implement this method. Read more
sourcefn new_span(&self, span: &Attributes<'_>) -> Id
fn new_span(&self, span: &Attributes<'_>) -> Id
sourcefn record_follows_from(&self, span: &Id, follows: &Id)
fn record_follows_from(&self, span: &Id, follows: &Id)
Adds an indication that span
follows from the span with the id
follows
. Read more
sourcefn clone_span(&self, old: &Id) -> Id
fn clone_span(&self, old: &Id) -> Id
sourcefn drop_span(&self, id: Id)
fn drop_span(&self, id: Id)
use Subscriber::try_close
instead
This method is deprecated. Read more
sourcefn current_span(&self) -> Current
fn current_span(&self) -> Current
Returns a type representing this subscriber’s view of the current span. Read more
sourcefn event_enabled(&self, event: &Event<'_>) -> bool
fn event_enabled(&self, event: &Event<'_>) -> bool
Auto Trait Implementations
impl<L, I, S> RefUnwindSafe for Layered<L, I, S> where
I: RefUnwindSafe,
L: RefUnwindSafe,
impl<L, I, S> Send for Layered<L, I, S> where
I: Send,
L: Send,
impl<L, I, S> Sync for Layered<L, I, S> where
I: Sync,
L: Sync,
impl<L, I, S> Unpin for Layered<L, I, S> where
I: Unpin,
L: Unpin,
impl<L, I, S> UnwindSafe for Layered<L, I, S> where
I: UnwindSafe,
L: UnwindSafe,
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<S> SubscriberExt for S where
S: Subscriber,
impl<S> SubscriberExt for S where
S: Subscriber,
sourceimpl<T> SubscriberInitExt for T where
T: Into<Dispatch>,
impl<T> SubscriberInitExt for T where
T: Into<Dispatch>,
sourcefn set_default(self) -> DefaultGuard
fn set_default(self) -> DefaultGuard
Sets self
as the default subscriber in the current scope, returning a
guard that will unset it when dropped. Read more
sourcefn try_init(self) -> Result<(), TryInitError>
fn try_init(self) -> Result<(), TryInitError>
Attempts to set self
as the global default subscriber in the current
scope, returning an error if one is already set. Read more
sourcefn init(self)
fn init(self)
Attempts to set self
as the global default subscriber in the current
scope, panicking if this fails. Read more
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