[][src]Struct tokio_trace::event::Event

pub struct Event<'a> where
    'a: 'a, 
{ /* fields omitted */ }

Events represent single points in time where something occurred during the execution of a program.

An Event can be compared to a log record in unstructured logging, but with two key differences:

  • Events exist within the context of a span. Unlike log lines, they may be located within the trace tree, allowing visibility into the temporal context in which the event occurred, as well as the source code location.
  • Like spans, Events have structured key-value data known as fields, which may include textual message. In general, a majority of the data associated with an event should be in the event's fields rather than in the textual message, as the fields are more structed.

Methods

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

pub fn dispatch(metadata: &'a Metadata<'a>, fields: &'a ValueSet)[src]

Constructs a new Event with the specified metadata and set of values, and observes it with the current subscriber.

pub fn record(&self, visitor: &mut dyn Visit)[src]

Visits all the fields on this Event with the specified visitor.

Important traits for Iter
pub fn fields(&self) -> Iter[src]

Returns an iterator over the set of values on this Event.

pub fn metadata(&self) -> &Metadata[src]

Returns metadata describing this Event.

Trait Implementations

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

Auto Trait Implementations

impl<'a> !Send for Event<'a>

impl<'a> !Sync for Event<'a>

Blanket Implementations

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

impl<T> From for T[src]

impl<T, U> TryFrom for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
[src]

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

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

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

The type returned in the event of a conversion error.