Struct tracing_subscriber::fmt::format::Pretty

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

An excessively pretty, human-readable event formatter.

Unlike the Full, Compact, and [Json] formatters, this is a multi-line output format. Each individual event may output multiple lines of text.

§Example Output

:; cargo run --example fmt-pretty
    Finished dev [unoptimized + debuginfo] target(s) in 0.08s
     Running `target/debug/examples/fmt-pretty`
  2022-02-15T18:44:24.535324Z  INFO fmt_pretty: preparing to shave yaks, number_of_yaks: 3
    at examples/examples/fmt-pretty.rs:16 on main

  2022-02-15T18:44:24.535403Z  INFO fmt_pretty::yak_shave: shaving yaks
    at examples/examples/fmt/yak_shave.rs:41 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535442Z TRACE fmt_pretty::yak_shave: hello! I'm gonna shave a yak, excitement: "yay!"
    at examples/examples/fmt/yak_shave.rs:16 on main
    in fmt_pretty::yak_shave::shave with yak: 1
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535469Z TRACE fmt_pretty::yak_shave: yak shaved successfully
    at examples/examples/fmt/yak_shave.rs:25 on main
    in fmt_pretty::yak_shave::shave with yak: 1
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535502Z DEBUG yak_events: yak: 1, shaved: true
    at examples/examples/fmt/yak_shave.rs:46 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535524Z TRACE fmt_pretty::yak_shave: yaks_shaved: 1
    at examples/examples/fmt/yak_shave.rs:55 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535551Z TRACE fmt_pretty::yak_shave: hello! I'm gonna shave a yak, excitement: "yay!"
    at examples/examples/fmt/yak_shave.rs:16 on main
    in fmt_pretty::yak_shave::shave with yak: 2
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535573Z TRACE fmt_pretty::yak_shave: yak shaved successfully
    at examples/examples/fmt/yak_shave.rs:25 on main
    in fmt_pretty::yak_shave::shave with yak: 2
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535600Z DEBUG yak_events: yak: 2, shaved: true
    at examples/examples/fmt/yak_shave.rs:46 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535618Z TRACE fmt_pretty::yak_shave: yaks_shaved: 2
    at examples/examples/fmt/yak_shave.rs:55 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535644Z TRACE fmt_pretty::yak_shave: hello! I'm gonna shave a yak, excitement: "yay!"
    at examples/examples/fmt/yak_shave.rs:16 on main
    in fmt_pretty::yak_shave::shave with yak: 3
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535670Z  WARN fmt_pretty::yak_shave: could not locate yak
    at examples/examples/fmt/yak_shave.rs:18 on main
    in fmt_pretty::yak_shave::shave with yak: 3
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535698Z DEBUG yak_events: yak: 3, shaved: false
    at examples/examples/fmt/yak_shave.rs:46 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535720Z ERROR fmt_pretty::yak_shave: failed to shave yak, yak: 3, error: missing yak, error.sources: [out of space, out of cash]
    at examples/examples/fmt/yak_shave.rs:51 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535742Z TRACE fmt_pretty::yak_shave: yaks_shaved: 2
    at examples/examples/fmt/yak_shave.rs:55 on main
    in fmt_pretty::yak_shave::shaving_yaks with yaks: 3

  2022-02-15T18:44:24.535765Z  INFO fmt_pretty: yak shaving completed, all_yaks_shaved: false
    at examples/examples/fmt-pretty.rs:19 on main

Implementations§

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impl Pretty

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pub fn with_source_location(self, display_location: bool) -> Self

👎Deprecated since 0.3.6: all formatters now support configurable source locations. Use Format::with_source_location instead.

Sets whether the event’s source code location is displayed.

This defaults to true.

Trait Implementations§

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impl Clone for Pretty

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fn clone(&self) -> Pretty

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 Debug for Pretty

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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 Default for Pretty

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<'writer> FormatFields<'writer> for Pretty

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fn format_fields<R: RecordFields>( &self, writer: Writer<'writer>, fields: R, ) -> Result

Format the provided fields to the provided Writer, returning a result.
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fn add_fields( &self, current: &'writer mut FormattedFields<Self>, fields: &Record<'_>, ) -> Result

Record additional field(s) on an existing span. Read more
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impl PartialEq for Pretty

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fn eq(&self, other: &Pretty) -> 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 Eq for Pretty

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impl StructuralPartialEq for Pretty

Auto Trait Implementations§

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impl Freeze for Pretty

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impl RefUnwindSafe for Pretty

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impl Send for Pretty

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impl Sync for Pretty

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impl Unpin for Pretty

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impl UnwindSafe for Pretty

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> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
Performs copy-assignment from self to dst. 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<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