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
pub const DEFAULT_MAX_LEVEL: LevelFilter
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>,
type Data = <Layered<F, Formatter<N, E, W>> as LookupSpan<'a>>::Data
type Data = <Layered<F, Formatter<N, E, W>> as LookupSpan<'a>>::Data
The type of span data stored in this registry.
sourcefn register_filter(&mut self) -> FilterId
fn register_filter(&mut self) -> FilterId
Registers a Filter
for per-layer filtering with this
Subscriber
. Read more
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: for<'writer> MakeWriter<'writer> + '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: for<'writer> MakeWriter<'writer> + '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
Registers a new callsite with this subscriber, returning whether or not the subscriber is interested in being notified about the callsite. Read more
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
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<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