SpanData class final
An immutable snapshot of a finished span.
Span is mutable while it is open — that is unavoidable, since attributes are discovered as the work proceeds. Exporters receive this frozen snapshot instead, so a slow exporter can never observe a torn or later-mutated span.
- Annotations
-
- @immutable
Constructors
-
SpanData({required String name, required TraceContext context, required SpanKind kind, required DateTime startTime, required DateTime endTime, required SpanStatus status, String? statusMessage, Map<
String, Object?> attributes = const <String, Object?>{}, List<SpanEvent> events = const <SpanEvent>[]}) - Creates a finished-span snapshot.
Properties
- attributes → JsonMap
-
Structured attributes describing the operation.
final
- context → TraceContext
-
Identity of this span within its trace.
final
- duration → Duration
-
How long the operation took.
no setter
- endTime → DateTime
-
When the span ended, in UTC.
final
-
events
→ List<
SpanEvent> -
Points of interest recorded during the span.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- kind → SpanKind
-
What kind of work this span represents.
final
- name → String
-
Operation name, such as
llm.generateortool.web_search.final - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- startTime → DateTime
-
When the span started, in UTC.
final
- status → SpanStatus
-
Recorded outcome.
final
- statusMessage → String?
-
Human-readable detail about a non-ok status.
final
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toJson(
) → JsonMap - Serialises the span.
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited