google-adk-kotlin-webserver/com.google.adk.kt.webserver.telemetry/ApiServerSpanExporter

ApiServerSpanExporter

class ApiServerSpanExporter : SpanExporter

A custom SpanExporter that stores relevant span data. It handles two types of trace data storage:

Event-ID based: Stores attributes of specific spans (call_llm, send_data, tool_response) keyed by gcp.vertex.agent.event_id. This is used for debugging individual events.
Session-ID based: Stores all exported spans and maintains a mapping from session_id (extracted from call_llm spans) to a list of trace_ids. This is used for retrieving all spans related to a session.

Constructors

ApiServerSpanExporter

constructor()

Types

object Companion

Functions

open override fun close()

open override fun export(spans: Collection<SpanData>): CompletableResultCode

open override fun flush(): CompletableResultCode

getAllExportedSpans

fun getAllExportedSpans(): List<SpanData>

getEventTraceAttributes

fun getEventTraceAttributes(eventId: String): Map<String, Any>?

getSessionToTraceIdsMap

fun getSessionToTraceIdsMap(): Map<String, List<String>>

open override fun shutdown(): CompletableResultCode