Struct tracing_core::subscriber::Interest [−][src]
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.
Implementations
impl Interest
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pub fn never() -> Self
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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() -> Self
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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() -> Self
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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
Auto Trait Implementations
impl RefUnwindSafe for Interest
impl Send for Interest
impl Sync for Interest
impl Unpin for Interest
impl UnwindSafe for Interest
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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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.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut 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.
pub 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>,