Module telemetry 

Available on crate feature telemetry only.

Telemetry (OpenTelemetry integration).

Production observability:

• Distributed tracing
• Metrics collection
• Log correlation

Available with feature: telemetry

Modules

global

Utilities for working with global telemetry primitives

init

Telemetry initialization and configuration

instrument

Attach a span to a std::future::Future.

span_exporter

spans

Span helpers for common ADK operations

Macros

debug

Constructs an event at the debug level.

error

Constructs an event at the error level.

info

Constructs an event at the info level.

trace

Constructs an event at the trace level.

warn

Constructs an event at the warn level.

Structs

AdkSpanExporter

ADK-Go style span exporter that stores spans by event_id Follows the pattern from APIServerSpanExporter in ADK-Go

AdkSpanLayer

Tracing layer that captures spans and exports them via AdkSpanExporter

LlmUsage

Token usage data for recording on tracing spans.

Meter

Provides the ability to create instruments for recording measurements or accepting callbacks to report measurements.

Span

A handle representing a span, with the capability to enter the span if it exists.

Enums

TelemetryError

Error returned by telemetry initialization functions.

Traits

MeterProvider

Provides access to named Meter instances, for instrumenting an application or crate.

Functions

add_context_attributes

Add common attributes to the current span

agent_run_span

Create a span for agent execution

build_otlp_layer

Build an OTLP tracing layer without initializing a global subscriber.

callback_span

Create a span for callback execution

init_telemetry

Initialize basic telemetry with console logging.

init_with_adk_exporter

Initialize telemetry with ADK span exporter.

init_with_otlp

Initialize telemetry with OpenTelemetry OTLP export.

llm_generate_span

Create a span for LLM generate_content calls with pre-declared token usage fields.

model_call_span

Create a span for model API calls

record_llm_usage

Record LLM token usage on the current span.

shutdown_telemetry

Shutdown telemetry and flush any pending spans.

tool_execute_span

Create a span for tool execution

Attribute Macros

instrument

Instruments a function to create and enter a tracing span every time the function is called.