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Struct slog::LevelFilter

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pub struct LevelFilter<D: Drain>(pub D, pub Level);
Expand description

Drain filtering records by Record logging level

Wraps a drain and passes records to it, only if their level is at least given level.

TODO: Remove this type. This drain is a special case of Filter, but because Filter can not use static dispatch ATM due to Rust limitations that will be lifted in the future, it is a standalone type. Reference: https://github.com/rust-lang/rust/issues/34511

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§0: D§1: Level

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impl<D: Drain> LevelFilter<D>

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pub fn new(drain: D, level: Level) -> Self

Create LevelFilter

Trait Implementations§

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impl<D: Clone + Drain> Clone for LevelFilter<D>

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fn clone(&self) -> LevelFilter<D>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<D: Debug + Drain> Debug for LevelFilter<D>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<D: Drain> Drain for LevelFilter<D>

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type Ok = Option<<D as Drain>::Ok>

Type returned by this drain Read more
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type Err = <D as Drain>::Err

Type of potential errors that can be returned by this Drain
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fn log( &self, record: &Record<'_>, logger_values: &OwnedKVList ) -> Result<Self::Ok, Self::Err>

Handle one logging statement (Record) Read more
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fn is_enabled(&self, level: Level) -> bool

Avoid: Check if messages at the specified log level are maybe enabled for this logger. Read more
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fn is_critical_enabled(&self) -> bool

Avoid: See is_enabled
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fn is_error_enabled(&self) -> bool

Avoid: See is_enabled
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fn is_warning_enabled(&self) -> bool

Avoid: See is_enabled
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fn is_info_enabled(&self) -> bool

Avoid: See is_enabled
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fn is_debug_enabled(&self) -> bool

Avoid: See is_enabled
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fn is_trace_enabled(&self) -> bool

Avoid: See is_enabled
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fn map<F, R>(self, f: F) -> Rwhere Self: Sized, F: FnOnce(Self) -> R,

Pass Drain through a closure, eg. to wrap into another Drain. Read more
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fn filter<F>(self, f: F) -> Filter<Self, F>where Self: Sized, F: FilterFn,

Filter logging records passed to Drain Read more
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fn filter_level(self, level: Level) -> LevelFilter<Self>where Self: Sized,

Filter logging records passed to Drain (by level) Read more
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fn map_err<F, E>(self, f: F) -> MapError<Self, E>where Self: Sized, F: MapErrFn<Self::Err, E>,

Map logging errors returned by this drain Read more
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fn ignore_res(self) -> IgnoreResult<Self>where Self: Sized,

Ignore results returned by this drain Read more

Auto Trait Implementations§

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impl<D> RefUnwindSafe for LevelFilter<D>where D: RefUnwindSafe,

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impl<D> Send for LevelFilter<D>where D: Send,

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impl<D> Sync for LevelFilter<D>where D: Sync,

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impl<D> Unpin for LevelFilter<D>where D: Unpin,

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impl<D> UnwindSafe for LevelFilter<D>where D: UnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> SendRefUnwindSafeDrain for Twhere T: Drain + Send + RefUnwindSafe + ?Sized,

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impl<T> SendSyncRefUnwindSafeDrain for Twhere T: Drain + Send + Sync + RefUnwindSafe + ?Sized,

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impl<T> SendSyncUnwindSafe for Twhere T: Send + Sync + UnwindSafe + ?Sized,

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impl<T> SendSyncUnwindSafeDrain for Twhere T: Drain + Send + Sync + UnwindSafe + ?Sized,