Module telemetry 

Available on crate feature telemetry only.

Telemetry (OpenTelemetry integration).

Production observability:

• Distributed tracing
• Metrics collection
• Log correlation

Available with feature: telemetry

Modules

configgenai-semconv

Runtime configuration for semantic convention emission.

eventsgenai-semconv

Content event emitter for opt-in prompt/completion capture.

init

Telemetry initialization and configuration

instrument

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

semconvgenai-semconv

OpenTelemetry GenAI Semantic Convention attribute constants and helpers.

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

GenAiResponseRecorder

Records response-time attributes on the current span.

GenAiSpanBuilder

Builder for creating model call spans with full OTel GenAI semconv attributes.

LlmUsage

Token usage data for recording on tracing spans.

Span

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

Enums

GenAiOperation

Well-known GenAI operation names per OTel semconv.

GenAiProvider

Well-known GenAI provider identifiers per OTel semconv registry.

TelemetryError

Error returned by telemetry initialization functions.

Functions

add_context_attributes

Add common attributes to the current span

agent_run_span

Create a span for agent execution

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.

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.