🛈 Note: This is pre-release documentation for the upcoming tracing 0.2.0 ecosystem.

For the release documentation, please see docs.rs, instead.

tracing_subscriber::fmt::format

Struct FmtSpan

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pub struct FmtSpan(/* private fields */);
Available on crate features fmt and std only.
Expand description

Configures what points in the span lifecycle are logged as events.

See also with_span_events.

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impl FmtSpan

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pub const NEW: FmtSpan = _

one event when span is created

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pub const ENTER: FmtSpan = _

one event per enter of a span

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pub const EXIT: FmtSpan = _

one event per exit of a span

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pub const CLOSE: FmtSpan = _

one event when the span is dropped

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pub const NONE: FmtSpan = _

spans are ignored (this is the default)

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pub const ACTIVE: FmtSpan = _

one event per enter/exit of a span

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pub const FULL: FmtSpan = _

events at all points (new, enter, exit, drop)

Trait Implementations§

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impl BitAnd for FmtSpan

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type Output = FmtSpan

The resulting type after applying the & operator.
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fn bitand(self, rhs: Self) -> Self::Output

Performs the & operation. Read more
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impl BitAndAssign for FmtSpan

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fn bitand_assign(&mut self, rhs: Self)

Performs the &= operation. Read more
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impl BitOr for FmtSpan

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type Output = FmtSpan

The resulting type after applying the | operator.
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fn bitor(self, rhs: Self) -> Self::Output

Performs the | operation. Read more
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impl BitOrAssign for FmtSpan

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fn bitor_assign(&mut self, rhs: Self)

Performs the |= operation. Read more
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impl BitXor for FmtSpan

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type Output = FmtSpan

The resulting type after applying the ^ operator.
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fn bitxor(self, rhs: Self) -> Self::Output

Performs the ^ operation. Read more
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impl BitXorAssign for FmtSpan

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fn bitxor_assign(&mut self, rhs: Self)

Performs the ^= operation. Read more
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impl Clone for FmtSpan

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fn clone(&self) -> FmtSpan

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 FmtSpan

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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 Ord for FmtSpan

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fn cmp(&self, other: &FmtSpan) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for FmtSpan

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fn eq(&self, other: &FmtSpan) -> bool

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for FmtSpan

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fn partial_cmp(&self, other: &FmtSpan) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Eq for FmtSpan

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impl StructuralPartialEq for FmtSpan

Auto Trait Implementations§

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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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> WithCollector for T

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fn with_collector<C>(self, collector: C) -> WithDispatch<Self>
where C: Into<Dispatch>,

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

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