Struct LogcatMakeWriter

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pub struct LogcatMakeWriter { /* private fields */ }
Expand description

A MakeWriter type that creates LogcatWriter instances that output to Android’s logcat.

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impl LogcatMakeWriter

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pub fn new(tag: LogcatTag) -> Result<Self>

Return a new instance with the specified tag source.

Examples found in repository?
examples/fixed_tag.rs (line 9)
7fn main() {
8    let tag = LogcatTag::Fixed(env!("CARGO_PKG_NAME").to_owned());
9    let writer = LogcatMakeWriter::new(tag).expect("Failed to initialize logcat writer");
10
11    tracing_subscriber::fmt()
12        .event_format(Format::default().with_level(false).without_time())
13        .with_writer(writer)
14        .with_ansi(false)
15        .with_max_level(Level::TRACE)
16        .init();
17
18    let _span = info_span!("span", foo = "bar").entered();
19
20    trace!("trace!");
21    debug!("debug!");
22    info!("info!");
23    warn!("warn!");
24    error!("error!");
25}
More examples
Hide additional examples
examples/target_tag.rs (line 9)
7fn main() {
8    let writer =
9        LogcatMakeWriter::new(LogcatTag::Target).expect("Failed to initialize logcat writer");
10
11    tracing_subscriber::fmt()
12        .event_format(
13            Format::default()
14                .with_level(false)
15                .with_target(false)
16                .without_time(),
17        )
18        .with_writer(writer)
19        .with_ansi(false)
20        .with_max_level(Level::TRACE)
21        .init();
22
23    let _span = info_span!("span", foo = "bar").entered();
24
25    trace!("trace!");
26    debug!("debug!");
27    info!("info!");
28    warn!("warn!");
29    error!("error!");
30}

Trait Implementations§

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impl Debug for LogcatMakeWriter

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

Formats the value using the given formatter. Read more
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impl<'a> MakeWriter<'a> for LogcatMakeWriter

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type Writer = LogcatWriter<'a>

The concrete io::Write implementation returned by make_writer.
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fn make_writer(&'a self) -> Self::Writer

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

Returns a Writer for writing data from the span or event described by the provided Metadata. Read more

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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: Sized + MakeWriter<'a, Writer = EitherWriter<W, Sink>>, 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, 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