[][src]Struct tracing::level_filters::LevelFilter

#[repr(transparent)]pub struct LevelFilter(_);

A filter comparable to a verbosity Level.

If a Level is considered less than a LevelFilter, it should be considered disabled; if greater than or equal to the LevelFilter, that level is enabled.

Note that this is essentially identical to the Level type, but with the addition of an OFF level that completely disables all trace instrumentation.

Implementations

impl LevelFilter[src]

pub const OFF: LevelFilter[src]

The "off" level.

Designates that trace instrumentation should be completely disabled.

pub const ERROR: LevelFilter[src]

The "error" level.

Designates very serious errors.

pub const WARN: LevelFilter[src]

The "warn" level.

Designates hazardous situations.

pub const INFO: LevelFilter[src]

The "info" level.

Designates useful information.

pub const DEBUG: LevelFilter[src]

The "debug" level.

Designates lower priority information.

pub const TRACE: LevelFilter[src]

The "trace" level.

Designates very low priority, often extremely verbose, information.

pub const fn from_level(level: Level) -> LevelFilter[src]

Returns a LevelFilter that enables spans and events with verbosity up to and including level.

pub const fn into_level(self) -> Option<Level>[src]

Returns the most verbose Level that this filter accepts, or None if it is OFF.

pub fn current() -> LevelFilter[src]

Returns a LevelFilter that matches the most verbose Level that any currently active Subscriber will enable.

User code should treat this as a hint. If a given span or event has a level higher than the returned LevelFilter, it will not be enabled. However, if the level is less than or equal to this value, the span or event is not guaranteed to be enabled; the subscriber will still filter each callsite individually.

Therefore, comparing a given span or event's level to the returned LevelFilter can be used for determining if something is disabled, but should not be used for determining if something is enabled.`

Trait Implementations

impl Clone for LevelFilter[src]

impl Debug for LevelFilter[src]

impl Display for LevelFilter[src]

impl Eq for LevelFilter[src]

impl From<Level> for LevelFilter[src]

impl FromStr for LevelFilter[src]

type Err = ParseLevelFilterError

The associated error which can be returned from parsing.

impl Into<Option<Level>> for LevelFilter[src]

impl Ord for LevelFilter[src]

impl PartialEq<Level> for LevelFilter[src]

impl PartialEq<LevelFilter> for LevelFilter[src]

impl PartialEq<LevelFilter> for Level[src]

impl PartialOrd<Level> for LevelFilter[src]

impl PartialOrd<LevelFilter> for LevelFilter[src]

impl PartialOrd<LevelFilter> for Level[src]

Auto Trait Implementations

impl RefUnwindSafe for LevelFilter

impl Send for LevelFilter

impl Sync for LevelFilter

impl Unpin for LevelFilter

impl UnwindSafe for LevelFilter

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
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impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.