Class Metrics

java.lang.Object

com.google.adk.telemetry.Metrics

public final class Metrics
extends Object

Utility class for recording OpenTelemetry metrics within the ADK.

Method Summary

Modifier and Type	Method	Description
static void	recordAgentInvocationDuration(String agentName, Duration duration, @Nullable Throwable error)	Records the duration of the agent invocation.
static void	recordAgentRequestSize(String agentName, @Nullable com.google.genai.types.Content userContent)	Records the size of the agent request.
static void	recordAgentResponseSize(String agentName, @Nullable List<Event> events)	Records the size of the agent response by extracting content from events.
static void	recordAgentWorkflowSteps(String agentName, List<Event> events)	Records the number of steps in the agent workflow by counting the number of events.
static void	recordToolExecutionDuration(String toolName, String agentName, Duration duration, @Nullable Throwable error)	Records the duration of the tool execution.
static void	recordToolRequestSize(String toolName, String agentName, Map<String,Object> functionArgs)	Records the size of the tool request.
static void	recordToolResponseSize(String toolName, String agentName, @Nullable Event responseEvent)	Records the size of the tool response.
static void	setMeterForTesting(io.opentelemetry.api.metrics.Meter meter)	Sets the OpenTelemetry Meter to be used for metrics.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

setMeterForTesting

public static void setMeterForTesting(io.opentelemetry.api.metrics.Meter meter)

Sets the OpenTelemetry Meter to be used for metrics. This is for testing purposes only.

recordAgentInvocationDuration

public static void recordAgentInvocationDuration(String agentName,
 Duration duration,
 @Nullable Throwable error)

Records the duration of the agent invocation.

recordAgentRequestSize

public static void recordAgentRequestSize(String agentName,
 @Nullable com.google.genai.types.Content userContent)

Records the size of the agent request.

recordAgentResponseSize

public static void recordAgentResponseSize(String agentName,
 @Nullable List<Event> events)

Records the size of the agent response by extracting content from events.

recordAgentWorkflowSteps

public static void recordAgentWorkflowSteps(String agentName,
 List<Event> events)

Records the number of steps in the agent workflow by counting the number of events.

recordToolExecutionDuration

public static void recordToolExecutionDuration(String toolName,
 String agentName,
 Duration duration,
 @Nullable Throwable error)

Records the duration of the tool execution.

recordToolRequestSize

public static void recordToolRequestSize(String toolName,
 String agentName,
 Map<String,Object> functionArgs)

Records the size of the tool request.

recordToolResponseSize

public static void recordToolResponseSize(String toolName,
 String agentName,
 @Nullable Event responseEvent)

Records the size of the tool response.