[−][src]Struct tracing_core::span::Attributes
Attributes provided to a Subscriber
describing a new span when it is
created.
Implementations
impl<'a> Attributes<'a>
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pub fn new(
metadata: &'static Metadata<'static>,
values: &'a ValueSet<'a>
) -> Self
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metadata: &'static Metadata<'static>,
values: &'a ValueSet<'a>
) -> Self
Returns Attributes
describing a new child span of the current span,
with the provided metadata and values.
pub fn new_root(
metadata: &'static Metadata<'static>,
values: &'a ValueSet<'a>
) -> Self
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metadata: &'static Metadata<'static>,
values: &'a ValueSet<'a>
) -> Self
Returns Attributes
describing a new span at the root of its own trace
tree, with the provided metadata and values.
pub fn child_of(
parent: Id,
metadata: &'static Metadata<'static>,
values: &'a ValueSet<'a>
) -> Self
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parent: Id,
metadata: &'static Metadata<'static>,
values: &'a ValueSet<'a>
) -> Self
Returns Attributes
describing a new child span of the specified
parent span, with the provided metadata and values.
pub fn metadata(&self) -> &'static Metadata<'static>
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Returns a reference to the new span's metadata.
pub fn values(&self) -> &ValueSet<'a>
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Returns a reference to a ValueSet
containing any values the new span
was created with.
pub fn is_root(&self) -> bool
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Returns true if the new span should be a root.
pub fn is_contextual(&self) -> bool
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Returns true if the new span's parent should be determined based on the current context.
If this is true and the current thread is currently inside a span, then that span should be the new span's parent. Otherwise, if the current thread is not inside a span, then the new span will be the root of its own trace tree.
pub fn parent(&self) -> Option<&Id>
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Returns the new span's explicitly-specified parent, if there is one.
Otherwise (if the new span is a root or is a child of the current span), returns false.
pub fn record(&self, visitor: &mut dyn Visit)
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Records all the fields in this set of Attributes
with the provided
Visitor.
pub fn contains(&self, field: &Field) -> bool
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Returns true
if this set of Attributes
contains a value for the
given Field
.
pub fn is_empty(&self) -> bool
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Returns true if this set of Attributes
contains no values.
Trait Implementations
impl<'a> Debug for Attributes<'a>
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Auto Trait Implementations
impl<'a> !RefUnwindSafe for Attributes<'a>
impl<'a> !Send for Attributes<'a>
impl<'a> !Sync for Attributes<'a>
impl<'a> Unpin for Attributes<'a>
impl<'a> !UnwindSafe for Attributes<'a>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,