Struct slog::MapError
[−]
[src]
pub struct MapError<D: Drain, E> { /* fields omitted */ }
Drain
mapping error returned by another Drain
See Drain::map_err
for convenience function.
Methods
impl<D: Drain, E> MapError<D, E>
[src]
fn new<F>(drain: D, map_fn: F) -> Self where F: MapErrFn<D::Err, E>
Create Filter
wrapping given drain
Trait Implementations
impl<D: Drain, E> Drain for MapError<D, E>
[src]
type Ok = D::Ok
Type returned by this drain Read more
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>
record: &Record,
logger_values: &OwnedKVList)
-> Result<Self::Ok, Self::Err>
Handle one logging statement (Record
) Read more
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
. Read more
fn filter<F>(self, f: F) -> Filter<Self, F> where Self: Sized, F: FilterFn
Filter logging records passed to Drain
Read more
fn filter_level(self, level: Level) -> LevelFilter<Self> where Self: Sized
Filter logging records passed to Drain
(by level) Read more
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
fn ignore_res(self) -> IgnoreResult<Self> where Self: Sized
Ignore results returned by this drain Read more
fn fuse(self) -> Fuse<Self> where Self::Err: Debug, Self: Sized
Make Self
panic when returning any errors Read more