pub struct WithFilter<M, F> { /* private fields */ }Available on crate features
fmt and std only.Expand description
A MakeWriter combinator that wraps a MakeWriter with a predicate for
span and event Metadata, so that the MakeWriter::make_writer_for
method returns OptionalWriter::some when the predicate returns true,
and OptionalWriter::none when the predicate returns false.
This is returned by the MakeWriterExt::with_filter method. See the
method documentation for details.
Implementations§
Source§impl<M, F> WithFilter<M, F>
impl<M, F> WithFilter<M, F>
Sourcepub fn new(make: M, filter: F) -> Self
pub fn new(make: M, filter: F) -> Self
Wraps make with the provided filter, returning a MakeWriter that
will call make.make_writer_for() when filter returns true for a
span or event’s Metadata, and returns a sink otherwise.
See MakeWriterExt::with_filter for details.
Trait Implementations§
Source§impl<M: Clone, F: Clone> Clone for WithFilter<M, F>
impl<M: Clone, F: Clone> Clone for WithFilter<M, F>
Source§fn clone(&self) -> WithFilter<M, F>
fn clone(&self) -> WithFilter<M, F>
Returns a copy of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreSource§impl<'a, M, F> MakeWriter<'a> for WithFilter<M, F>
impl<'a, M, F> MakeWriter<'a> for WithFilter<M, F>
Source§type Writer = EitherWriter<<M as MakeWriter<'a>>::Writer, Sink>
type Writer = EitherWriter<<M as MakeWriter<'a>>::Writer, Sink>
The concrete
io::Write implementation returned by make_writer.impl<M: Copy, F: Copy> Copy for WithFilter<M, F>
impl<M: Eq, F: Eq> Eq for WithFilter<M, F>
impl<M, F> StructuralPartialEq for WithFilter<M, F>
Auto Trait Implementations§
impl<M, F> Freeze for WithFilter<M, F>
impl<M, F> RefUnwindSafe for WithFilter<M, F>where
M: RefUnwindSafe,
F: RefUnwindSafe,
impl<M, F> Send for WithFilter<M, F>
impl<M, F> Sync for WithFilter<M, F>
impl<M, F> Unpin for WithFilter<M, F>
impl<M, F> UnwindSafe for WithFilter<M, F>where
M: UnwindSafe,
F: UnwindSafe,
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<'a, M> MakeWriterExt<'a> for Mwhere
M: MakeWriter<'a>,
impl<'a, M> MakeWriterExt<'a> for Mwhere
M: MakeWriter<'a>,
Source§fn with_max_level(self, level: Level) -> WithMaxLevel<Self>where
Self: Sized,
fn with_max_level(self, level: Level) -> WithMaxLevel<Self>where
Self: Sized,
Available on crate features
fmt and std only.Wraps
self and returns a MakeWriter that will only write output
for events at or below the provided verbosity Level. For instance,
Level::TRACE is considered to be _more verbosethanLevel::INFO`. Read moreSource§fn with_min_level(self, level: Level) -> WithMinLevel<Self>where
Self: Sized,
fn with_min_level(self, level: Level) -> WithMinLevel<Self>where
Self: Sized,
Available on crate features
fmt and std only.Wraps
self and returns a MakeWriter that will only write output
for events at or above the provided verbosity Level. Read moreSource§fn with_filter<F>(self, filter: F) -> WithFilter<Self, F>
fn with_filter<F>(self, filter: F) -> WithFilter<Self, F>
Available on crate features
fmt and std only.Wraps
self with a predicate that takes a span or event’s Metadata
and returns a bool. The returned MakeWriter’s
MakeWriter::make_writer_for method will check the predicate to
determine if a writer should be produced for a given span or event. Read moreSource§fn and<B>(self, other: B) -> Tee<Self, B> ⓘ
fn and<B>(self, other: B) -> Tee<Self, B> ⓘ
Available on crate features
fmt and std only.Combines
self with another type implementing MakeWriter, returning
a new MakeWriter that produces writers that write to both
outputs. Read moreSource§fn or_else<W, B>(self, other: B) -> OrElse<Self, B>where
Self: MakeWriter<'a, Writer = OptionalWriter<W>> + Sized,
B: MakeWriter<'a> + Sized,
W: Write,
fn or_else<W, B>(self, other: B) -> OrElse<Self, B>where
Self: MakeWriter<'a, Writer = OptionalWriter<W>> + Sized,
B: MakeWriter<'a> + Sized,
W: Write,
Available on crate features
fmt and std only.Combines
self with another type implementing MakeWriter, returning
a new MakeWriter that calls other’s make_writer if self’s
make_writer returns OptionalWriter::none. Read moreLayout§
Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.