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.

Methods

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

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

Create Filter wrapping given drain

Trait Implementations

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

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 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: Fn(&Record) -> bool + 'static + Send + Sync

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: 'static + Sync + Send + Fn(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