Struct holochain::prelude::dependencies::kitsune_p2p_types::dependencies::ghost_actor::dependencies::observability::tracing::Event
source · pub struct Event<'a> { /* private fields */ }
Expand description
Event
s 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:
Event
s 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,
Event
s 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 structured.
Implementations
sourceimpl<'a> Event<'a>
impl<'a> Event<'a>
sourcepub fn dispatch(metadata: &'static Metadata<'static>, fields: &'a ValueSet<'_>)
pub fn dispatch(metadata: &'static Metadata<'static>, fields: &'a ValueSet<'_>)
Constructs a new Event
with the specified metadata and set of values,
and observes it with the current subscriber.
sourcepub fn new(
metadata: &'static Metadata<'static>,
fields: &'a ValueSet<'a>
) -> Event<'a>
pub fn new(
metadata: &'static Metadata<'static>,
fields: &'a ValueSet<'a>
) -> Event<'a>
Returns a new Event
in the current span, with the specified metadata
and set of values.
sourcepub fn new_child_of(
parent: impl Into<Option<Id>>,
metadata: &'static Metadata<'static>,
fields: &'a ValueSet<'a>
) -> Event<'a>
pub fn new_child_of(
parent: impl Into<Option<Id>>,
metadata: &'static Metadata<'static>,
fields: &'a ValueSet<'a>
) -> Event<'a>
Returns a new Event
as a child of the specified span, with the
provided metadata and set of values.
sourcepub fn child_of(
parent: impl Into<Option<Id>>,
metadata: &'static Metadata<'static>,
fields: &'a ValueSet<'_>
)
pub fn child_of(
parent: impl Into<Option<Id>>,
metadata: &'static Metadata<'static>,
fields: &'a ValueSet<'_>
)
Constructs a new Event
with the specified metadata and set of values,
and observes it with the current subscriber and an explicit parent.
sourcepub fn record(&self, visitor: &mut dyn Visit)
pub fn record(&self, visitor: &mut dyn Visit)
Visits all the fields on this Event
with the specified visitor.
sourcepub fn is_contextual(&self) -> bool
pub fn is_contextual(&self) -> bool
Returns true if the new event’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 event’s parent. Otherwise, if the current thread is not inside a span, then the new event will be the root of its own trace tree.
Trait Implementations
sourceimpl<'a> AsSerde<'a> for Event<'a>
impl<'a> AsSerde<'a> for Event<'a>
type Serializable = SerializeEvent<'a>
sourcefn as_serde(&'a self) -> <Event<'a> as AsSerde<'a>>::Serializable
fn as_serde(&'a self) -> <Event<'a> as AsSerde<'a>>::Serializable
as_serde
borrows a tracing
value and returns the serialized value.sourceimpl<'a> NormalizeEvent<'a> for Event<'a>
impl<'a> NormalizeEvent<'a> for Event<'a>
sourcefn normalized_metadata(&'a self) -> Option<Metadata<'a>>
fn normalized_metadata(&'a self) -> Option<Metadata<'a>>
Event
comes from a log
, this method provides a new
normalized Metadata
which has all available attributes
from the original log, including file
, line
, module_path
and target
.
Returns None
is the Event
is not issued from a log
. Read moresourceimpl<'a> RecordFields for Event<'a>
impl<'a> RecordFields for Event<'a>
Auto Trait Implementations
impl<'a> !RefUnwindSafe for Event<'a>
impl<'a> !Send for Event<'a>
impl<'a> !Sync for Event<'a>
impl<'a> Unpin for Event<'a>
impl<'a> !UnwindSafe for Event<'a>
Blanket Implementations
impl<T> Any for Twhere
T: Any + ?Sized,
impl<T> Any for Twhere
T: Any + ?Sized,
fn type_id_compat(&self) -> TypeId
fn type_id_compat(&self) -> TypeId
impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
type ArchivedMetadata = ()
type ArchivedMetadata = ()
fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
impl<T> FutureExt for T
impl<T> FutureExt for T
fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
fn with_current_context(self) -> WithContext<Self> ⓘ
fn with_current_context(self) -> WithContext<Self> ⓘ
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
sourcefn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
sourcefn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
impl<T> Pointable for T
impl<T> Pointable for T
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
self
from the equivalent element of its
superset. Read morefn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
self
is actually part of its subset T
(and can be converted to it).fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
self.to_subset
but without any property checks. Always succeeds.fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
self
to the equivalent element of its superset.