Struct slog::Filter

pub struct Filter<D: Drain, F>(pub D, pub F)
 where
    F: Fn(&Record<'_>) -> bool + 'static + Send + Sync;

Drain filtering records

Wraps another Drain and passes Records to it, only if they satisfy a given condition.

Implementations

impl<D: Drain, F> Filter<D, F> where
    F: FilterFn, 

pub fn new(drain: D, cond: F) -> Self

Create Filter wrapping given drain

Trait Implementations

impl<D: Clone + Drain, F: Clone> Clone for Filter<D, F> where
    F: Fn(&Record<'_>) -> bool + 'static + Send + Sync, 

fn clone(&self) -> Filter<D, F>

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<D: Debug + Drain, F: Debug> Debug for Filter<D, F> where
    F: Fn(&Record<'_>) -> bool + 'static + Send + Sync, 

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

Formats the value using the given formatter.

impl<D: Drain, F> Drain for Filter<D, F> where
    F: FilterFn, 

type Ok = Option<D::Ok>

Type returned by this drain

type Err = D::Err

Type of potential errors that can be returned by this Drain

fn log(
    &self,
    record: &Record<'_>,
    logger_values: &OwnedKVList
) -> Result<Self::Ok, Self::Err>

Handle one logging statement (Record)

fn is_enabled(&self, level: Level) -> bool

Avoid: Check if messages at the specified log level are maybe enabled for this logger.

fn is_critical_enabled(&self) -> bool

Avoid: See is_enabled

fn is_error_enabled(&self) -> bool

Avoid: See is_enabled

fn is_warning_enabled(&self) -> bool

Avoid: See is_enabled

fn is_info_enabled(&self) -> bool

Avoid: See is_enabled

fn is_debug_enabled(&self) -> bool

Avoid: See is_enabled

fn is_trace_enabled(&self) -> bool

Avoid: See is_enabled

fn map<F, R>(self, f: F) -> R where
    Self: Sized,
    F: FnOnce(Self) -> R, 

Pass Drain through a closure, eg. to wrap into another Drain.

fn filter<F>(self, f: F) -> Filter<Self, F> where
    Self: Sized,
    F: FilterFn, 

Filter logging records passed to Drain

fn filter_level(self, level: Level) -> LevelFilter<Self> where
    Self: Sized, 

Filter logging records passed to Drain (by level)

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

fn ignore_res(self) -> IgnoreResult<Self> where
    Self: Sized, 

Ignore results returned by this drain

fn fuse(self) -> Fuse<Self> where
    Self::Err: Debug,
    Self: Sized, 

Make Self panic when returning any errors