Enum tracing_tunnel::TracingEvent

#[non_exhaustive]
pub enum TracingEvent {
    NewCallSite {
        id: MetadataId,
        data: CallSiteData,
    },
    NewSpan {
        id: RawSpanId,
        parent_id: Option<RawSpanId>,
        metadata_id: MetadataId,
        values: TracedValues<String>,
    },
    FollowsFrom {
        id: RawSpanId,
        follows_from: RawSpanId,
    },
    SpanEntered {
        id: RawSpanId,
    },
    SpanExited {
        id: RawSpanId,
    },
    SpanCloned {
        id: RawSpanId,
    },
    SpanDropped {
        id: RawSpanId,
    },
    ValuesRecorded {
        id: RawSpanId,
        values: TracedValues<String>,
    },
    NewEvent {
        metadata_id: MetadataId,
        parent: Option<RawSpanId>,
        values: TracedValues<String>,
    },
}

Event produced during tracing.

These events are emitted by a TracingEventSender and then consumed by a TracingEventReceiver to pass tracing info across an API boundary.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NewCallSite

New call site.

Fields

id: MetadataId

Unique ID of the call site that will be used to refer to it in the following events.

data: CallSiteData

Information about the call site.

NewSpan

New tracing span.

Fields

id: RawSpanId

Unique ID of the span that will be used to refer to it in the following events.

parent_id: Option<RawSpanId>

Parent span ID. None means using the contextual parent (i.e., the current span).

metadata_id: MetadataId

ID of the span metadata.

values: TracedValues<String>

Values associated with the span.

FollowsFrom

New “follows from” relation between spans.

Fields

id: RawSpanId

ID of the follower span.

follows_from: RawSpanId

ID of the source span.

SpanEntered

Span was entered.

Fields

id: RawSpanId

ID of the span.

SpanExited

Span was exited.

Fields

id: RawSpanId

ID of the span.

SpanCloned

Span was cloned.

Fields

id: RawSpanId

ID of the span.

SpanDropped

Span was dropped (aka closed).

Fields

id: RawSpanId

ID of the span.

ValuesRecorded

New values recorded for a span.

Fields

id: RawSpanId

ID of the span.

values: TracedValues<String>

Recorded values.

NewEvent

New event.

Fields

metadata_id: MetadataId

ID of the event metadata.

parent: Option<RawSpanId>

Parent span ID. None means using the contextual parent (i.e., the current span).

values: TracedValues<String>

Values associated with the event.

Trait Implementations

impl Clone for TracingEvent

fn clone(&self) -> TracingEvent

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TracingEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TracingEvent

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TracingEvent

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.