Struct slog::Fuse

pub struct Fuse<D: Drain>(pub D)
 where
    D::Err: Debug;

Drain panicking on error

Logger requires a root drain to handle all errors (Drain::Error == ()), Fuse will wrap a Drain and panic if it returns any errors.

Note: Drain::Err must implement Display (for displaying on panick). It's easy to create own Fuse drain if this requirement can't be fulfilled.

Methods

impl<D: Drain> Fuse<D> where     D::Err: Debug,

pub fn new(drain: D) -> Self

Create Fuse wrapping given drain

Trait Implementations

impl<D: Debug + Drain> Debug for Fuse<D> where     D::Err: Debug,

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

Formats the value using the given formatter.

impl<D: Clone + Drain> Clone for Fuse<D> where     D::Err: Debug,

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<D: Drain> Drain for Fuse<D> where     D::Err: Debug,

type Ok = ()

Type returned by this drain

type Err = Never

Type of potential errors that can be returned by this Drain

fn log(     &self,     record: &Record,     logger_values: &OwnedKVList ) -> Result<Self::Ok, Never>

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