Struct lambda_runtime::tracing::subscriber::fmt::writer::WithFilter

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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.

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impl<M, F> WithFilter<M, F>

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pub fn new(make: M, filter: F) -> WithFilter<M, F>
where 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§

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impl<M, F> Clone for WithFilter<M, F>
where M: Clone, F: Clone,

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fn clone(&self) -> WithFilter<M, F>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<M, F> Debug for WithFilter<M, F>
where M: Debug, F: Debug,

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

Formats the value using the given formatter. Read more
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impl<'a, M, F> MakeWriter<'a> for WithFilter<M, F>
where M: MakeWriter<'a>, F: Fn(&Metadata<'_>) -> bool,

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type Writer = EitherWriter<<M as MakeWriter<'a>>::Writer, Sink>

The concrete io::Write implementation returned by make_writer.
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fn make_writer(&'a self) -> <WithFilter<M, F> as MakeWriter<'a>>::Writer

Returns an instance of Writer. Read more
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fn make_writer_for( &'a self, meta: &Metadata<'_> ) -> <WithFilter<M, F> as MakeWriter<'a>>::Writer

Returns a Writer for writing data from the span or event described by the provided Metadata. Read more
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impl<M, F> PartialEq for WithFilter<M, F>
where M: PartialEq, F: PartialEq,

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fn eq(&self, other: &WithFilter<M, F>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<M, F> Copy for WithFilter<M, F>
where M: Copy, F: Copy,

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impl<M, F> Eq for WithFilter<M, F>
where M: Eq, F: Eq,

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impl<M, F> StructuralPartialEq for WithFilter<M, F>

Auto Trait Implementations§

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impl<M, F> Freeze for WithFilter<M, F>
where F: Freeze, M: Freeze,

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impl<M, F> RefUnwindSafe for WithFilter<M, F>
where F: RefUnwindSafe, M: RefUnwindSafe,

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impl<M, F> Send for WithFilter<M, F>
where F: Send, M: Send,

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impl<M, F> Sync for WithFilter<M, F>
where F: Sync, M: Sync,

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impl<M, F> Unpin for WithFilter<M, F>
where F: Unpin, M: Unpin,

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impl<M, F> UnwindSafe for WithFilter<M, F>
where F: UnwindSafe, M: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<'a, M> MakeWriterExt<'a> for M
where M: MakeWriter<'a>,

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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 more
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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 more
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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 more
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fn and<B>(self, other: B) -> Tee<Self, B> ⓘ
where Self: Sized, B: MakeWriter<'a>,

Combines self with another type implementing MakeWriter, returning a new MakeWriter that produces writers that write to both outputs. Read more
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fn or_else<W, B>(self, other: B) -> OrElse<Self, B>
where Self: MakeWriter<'a, Writer = EitherWriter<W, Sink>> + Sized, B: MakeWriter<'a>, 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
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more