log4k/io.github.smyrgeorge.log4k/TracingEvent/Span

Span

abstract class Span(val name: String, val level: Level, val context: TracingEvent.Span.Context, val parent: TracingEvent.Span?, var startAt: Instant?, var endAt: Instant?, val tags: MutableTags, val events: MutableList<TracingEvent.Span.Event>, var status: TracingEvent.Span.Status) : TracingEvent

Represents a span in a tracing system, which can either be a Local or Remote span.

A span is a unit of work within a trace and may contain child spans, tags, events, and a status. https://opentelemetry.io/docs/specs/otel/trace/api/#span

Inheritors

Constructors

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constructor(id: String, name: String, level: Level, tracer: Tracer, parent: TracingEvent.Span?, traceId: String)

Constructor for creating a Local Span.

constructor(id: String, traceId: String, name: String, level: Level, tracer: Tracer)

Constructor for creating a Remote span instance with the given parameters.

constructor(name: String, level: Level, context: TracingEvent.Span.Context, parent: TracingEvent.Span?, startAt: Instant?, endAt: Instant?, tags: MutableTags, events: MutableList<TracingEvent.Span.Event>, status: TracingEvent.Span.Status)

Types

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data class Context(val traceId: String, val spanId: String, val isRemote: Boolean, val tracer: Tracer)
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data class Event(val name: String, val timestamp: Instant, val tags: Tags)
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class Local(id: String, val name: String, val level: Level, tracer: Tracer, val parent: TracingEvent.Span? = null, traceId: String = parent?.context?.traceId ?: id) : TracingEvent.Span

Represents a local span in a tracing system. A span is a unit of work within a trace and can contain child spans.

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class Remote(id: String, traceId: String, val name: String = "remote-", val level: Level, tracer: Tracer) : TracingEvent.Span

Represents a remote span in a distributed tracing system.

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data class Status(val code: TracingEvent.Span.Status.Code = Code.UNSET, val error: Throwable? = null, val description: String? = null)

Properties

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val context: TracingEvent.Span.Context

The context of the span, providing trace and span identifiers.

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var endAt: Instant?

The end timestamp of the span, set when the span ends.

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val events: MutableList<TracingEvent.Span.Event>

A list of events associated with the span.

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open val level: Level

The logging level of the span.

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open val name: String

The name of the span.

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open val parent: TracingEvent.Span?

The parent span, if any; can be null.

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var startAt: Instant?

The start timestamp of the span, set when the span starts.

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var status: TracingEvent.Span.Status

The status of the span, containing the result of its execution.

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val tags: MutableTags

A map of tags associated with the span.

Functions

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fun span(name: String): TracingEvent.Span.Local

Creates and returns a new local span with the given name associated with the current context.

inline fun <T> span(name: String, f: TracingEvent.Span.Local.() -> T): T

Executes a function within the scope of a tracing span.

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open override fun toString(): String