[−][src]Struct tracing::subscriber::Interest
Indicates a Subscriber
's interest in a particular callsite.
Subscriber
s return an Interest
from their [register_callsite
] methods
in order to determine whether that span should be enabled or disabled.
Subscriber
trait.Subscriber.html
[clone_span]: trait.Subscriber.html#method.register_callsite
Methods
impl Interest
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pub fn never() -> Interest
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Returns an Interest
indicating that the subscriber is never interested
in being notified about a callsite.
If all active subscribers are never()
interested in a callsite, it will
be completely disabled unless a new subscriber becomes active.
pub fn sometimes() -> Interest
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Returns an Interest
indicating the subscriber is sometimes interested
in being notified about a callsite.
If all active subscribers are sometimes
or never
interested in a
callsite, the currently active subscriber will be asked to filter that
callsite every time it creates a span. This will be the case until a new
subscriber expresses that it is always
interested in the callsite.
pub fn always() -> Interest
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Returns an Interest
indicating the subscriber is always interested in
being notified about a callsite.
If any subscriber expresses that it is always()
interested in a given
callsite, then the callsite will always be enabled.
pub fn is_never(&self) -> bool
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Returns true
if the subscriber is never interested in being notified
about this callsite.
pub fn is_sometimes(&self) -> bool
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Returns true
if the subscriber is sometimes interested in being notified
about this callsite.
pub fn is_always(&self) -> bool
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Returns true
if the subscriber is always interested in being notified
about this callsite.
Trait Implementations
impl Clone for Interest
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fn clone(&self) -> Interest
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Debug for Interest
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Auto Trait Implementations
impl Sync for Interest
impl Send for Interest
impl Unpin for Interest
impl RefUnwindSafe for Interest
impl UnwindSafe for Interest
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,