Struct slog::Fuse

[+] Show declaration

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

[−] Expand description

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 panic). It’s easy to create your own Fuse drain if this requirement can’t be fulfilled.

Implementations

impl<D: Drain> Fuse<D> where
    D::Err: Debug, [−]

pub fn new(drain: D) -> Self[−]

Create Fuse wrapping given drain

Trait Implementations

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

[+] Show hidden undocumented items

fn clone(&self) -> Fuse<D>[−]

Returns a copy of the value.

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

Performs copy-assignment from source.

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

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

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

[+] Show hidden undocumented items

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