Struct tracing_subscriber::fmt::writer::WithFilter
source · pub struct WithFilter<M, F> { /* private fields */ }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) -> Selfwhere
F: Fn(&Metadata<'_>) -> bool,
pub fn new(make: M, filter: F) -> Selfwhere F: Fn(&Metadata<'_>) -> bool,
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>where
M: MakeWriter<'a>,
F: Fn(&Metadata<'_>) -> bool,
impl<'a, M, F> MakeWriter<'a> for WithFilter<M, F>where M: MakeWriter<'a>, F: Fn(&Metadata<'_>) -> bool,
§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.source§impl<M: PartialEq, F: PartialEq> PartialEq for WithFilter<M, F>
impl<M: PartialEq, F: PartialEq> PartialEq for WithFilter<M, F>
source§fn eq(&self, other: &WithFilter<M, F>) -> bool
fn eq(&self, other: &WithFilter<M, F>) -> bool
This method tests for
self and other values to be equal, and is used
by ==.impl<M: Copy, F: Copy> Copy for WithFilter<M, F>
impl<M: Eq, F: Eq> Eq for WithFilter<M, F>
impl<M, F> StructuralEq for WithFilter<M, F>
impl<M, F> StructuralPartialEq for WithFilter<M, F>
Auto Trait Implementations§
impl<M, F> RefUnwindSafe for WithFilter<M, F>where F: RefUnwindSafe, M: RefUnwindSafe,
impl<M, F> Send for WithFilter<M, F>where F: Send, M: Send,
impl<M, F> Sync for WithFilter<M, F>where F: Sync, M: Sync,
impl<M, F> Unpin for WithFilter<M, F>where F: Unpin, M: Unpin,
impl<M, F> UnwindSafe for WithFilter<M, F>where F: UnwindSafe, M: 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<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key and return true if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
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,
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,
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>where
Self: Sized,
F: Fn(&Metadata<'_>) -> bool,
fn with_filter<F>(self, filter: F) -> WithFilter<Self, F>where Self: Sized, F: Fn(&Metadata<'_>) -> bool,
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> ⓘwhere
Self: Sized,
B: MakeWriter<'a> + Sized,
fn and<B>(self, other: B) -> Tee<Self, B> ⓘwhere Self: Sized, B: MakeWriter<'a> + Sized,
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,
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 more