Struct MapError

pub struct MapError<D: Drain, E> { /* private fields */ }

Drain mapping error returned by another Drain

See Drain::map_err for convenience function.

Implementations

impl<D: Drain, E> MapError<D, E>

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

where F: MapErrFn<<D as Drain>::Err, E>,

Create Filter wrapping given drain

Trait Implementations

impl<D: Drain, E> Drain for MapError<D, E>

type Ok = <D as Drain>::Ok

Type returned by this drain

type Err = E

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