Struct tracing_subscriber::fmt::Subscriber
source · [−]pub struct Subscriber<N = DefaultFields, E = Format<Full>, F = LevelFilter, W = fn() -> Stdout> { /* private fields */ }
Expand description
A Subscriber
that logs formatted representations of tracing
events.
This consists of an inner Formatter
wrapped in a layer that performs filtering.
Implementations
sourceimpl Subscriber
impl Subscriber
sourcepub const DEFAULT_MAX_LEVEL: LevelFilter = LevelFilter::INFO
pub const DEFAULT_MAX_LEVEL: LevelFilter = LevelFilter::INFO
The maximum verbosity level that is enabled by a Subscriber
by
default.
This can be overridden with the SubscriberBuilder::with_max_level
method.
sourcepub fn builder() -> SubscriberBuilder
pub fn builder() -> SubscriberBuilder
Returns a new SubscriberBuilder
for configuring a format subscriber.
Trait Implementations
sourceimpl Default for Subscriber
impl Default for Subscriber
sourceimpl<'a, N, E, F, W> LookupSpan<'a> for Subscriber<N, E, F, W> where
Layered<F, Formatter<N, E, W>>: LookupSpan<'a>,
impl<'a, N, E, F, W> LookupSpan<'a> for Subscriber<N, E, F, W> where
Layered<F, Formatter<N, E, W>>: LookupSpan<'a>,
sourceimpl<N, E, F, W> Subscriber for Subscriber<N, E, F, W> where
N: for<'writer> FormatFields<'writer> + 'static,
E: FormatEvent<Registry, N> + 'static,
F: Layer<Formatter<N, E, W>> + 'static,
W: MakeWriter + 'static,
Layered<F, Formatter<N, E, W>>: Subscriber,
Layer<Registry, N, E, W>: Layer<Registry>,
impl<N, E, F, W> Subscriber for Subscriber<N, E, F, W> where
N: for<'writer> FormatFields<'writer> + 'static,
E: FormatEvent<Registry, N> + 'static,
F: Layer<Formatter<N, E, W>> + 'static,
W: MakeWriter + 'static,
Layered<F, Formatter<N, E, W>>: Subscriber,
Layer<Registry, N, E, W>: Layer<Registry>,
sourcefn register_callsite(&self, meta: &'static Metadata<'static>) -> Interest
fn register_callsite(&self, meta: &'static Metadata<'static>) -> Interest
sourcefn new_span(&self, attrs: &Attributes<'_>) -> Id
fn new_span(&self, attrs: &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 current_span(&self) -> Current
fn current_span(&self) -> Current
Returns a type representing this subscriber’s view of the current span. Read more
sourcefn clone_span(&self, id: &Id) -> Id
fn clone_span(&self, id: &Id) -> Id
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
sourceunsafe fn downcast_raw(&self, id: TypeId) -> Option<*const ()>
unsafe fn downcast_raw(&self, id: TypeId) -> Option<*const ()>
If self
is the same type as the provided TypeId
, returns an untyped
*const
pointer to that type. Otherwise, returns None
. Read more
sourcefn event_enabled(&self, event: &Event<'_>) -> bool
fn event_enabled(&self, event: &Event<'_>) -> bool
Auto Trait Implementations
impl<N, E, F, W> RefUnwindSafe for Subscriber<N, E, F, W> where
E: RefUnwindSafe,
F: RefUnwindSafe,
N: RefUnwindSafe,
W: RefUnwindSafe,
impl<N, E, F, W> Send for Subscriber<N, E, F, W> where
E: Send,
F: Send,
N: Send,
W: Send,
impl<N, E, F, W> Sync for Subscriber<N, E, F, W> where
E: Sync,
F: Sync,
N: Sync,
W: Sync,
impl<N, E, F, W> Unpin for Subscriber<N, E, F, W> where
E: Unpin,
F: Unpin,
N: Unpin,
W: Unpin,
impl<N = DefaultFields, E = Format<Full, SystemTime>, F = LevelFilter, W = fn() -> Stdout> !UnwindSafe for Subscriber<N, E, F, W>
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