[][src]Struct tracing::span::Attributes

pub struct Attributes<'a> { /* fields omitted */ }

Attributes provided to a Subscriber describing a new span when it is created.

Implementations

impl<'a> Attributes<'a>[src]

pub fn new(
    metadata: &'static Metadata<'static>,
    values: &'a ValueSet<'a>
) -> Attributes<'a>
[src]

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>
) -> Attributes<'a>
[src]

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>
) -> Attributes<'a>
[src]

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>[src]

Returns a reference to the new span's metadata.

pub fn values(&self) -> &ValueSet<'a>[src]

Returns a reference to a ValueSet containing any values the new span was created with.

pub fn is_root(&self) -> bool[src]

Returns true if the new span should be a root.

pub fn is_contextual(&self) -> bool[src]

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>[src]

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)[src]

Records all the fields in this set of Attributes with the provided Visitor.

pub fn contains(&self, field: &Field) -> bool[src]

Returns true if this set of Attributes contains a value for the given Field.

pub fn is_empty(&self) -> bool[src]

Returns true if this set of Attributes contains no values.

Trait Implementations

impl<'a> Debug for Attributes<'a>[src]

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
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T> Instrument for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.