Function initializeOTEL

Initializes OpenTelemetry with LangSmith-specific configuration for tracing.

Call this once at the start of your application to enable tracing integration. Sets global OpenTelemetry components including the tracer provider and context manager.

Requires the following peer dependencies to be installed:

@opentelemetry/api
@opentelemetry/sdk-trace-base
@opentelemetry/exporter-trace-otlp-proto
@opentelemetry/context-async-hooks

Example

import { initializeOTEL } from "langsmith/experimental/otel/setup";
initializeOTEL();

Example: With custom tracer provider

import { initializeOTEL } from "langsmith/experimental/otel/setup";
import { BasicTracerProvider } from "@opentelemetry/sdk-trace-base";

const customProvider = new BasicTracerProvider();
initializeOTEL({ globalTracerProvider: customProvider });

initializeOTEL(
    config?: InitializeOTELConfig,
): {
    DEFAULT_LANGSMITH_SPAN_EXPORTER: LangSmithOTLPTraceExporter;
    DEFAULT_LANGSMITH_SPAN_PROCESSOR: BatchSpanProcessor;
    DEFAULT_LANGSMITH_TRACER_PROVIDER: TracerProvider;
}
Parameters
- config: InitializeOTELConfig = {}
Returns {
    DEFAULT_LANGSMITH_SPAN_EXPORTER: LangSmithOTLPTraceExporter;
    DEFAULT_LANGSMITH_SPAN_PROCESSOR: BatchSpanProcessor;
    DEFAULT_LANGSMITH_TRACER_PROVIDER: TracerProvider;
}
Object containing the initialized OTEL components (tracer provider, span processor, exporter)
- Defined in src/experimental/otel/setup.ts:76

Function initializeOTEL

Example

Example: With custom tracer provider

Parameters

Returns { DEFAULT_LANGSMITH_SPAN_EXPORTER: LangSmithOTLPTraceExporter; DEFAULT_LANGSMITH_SPAN_PROCESSOR: BatchSpanProcessor; DEFAULT_LANGSMITH_TRACER_PROVIDER: TracerProvider;}

Settings

Returns {
DEFAULT_LANGSMITH_SPAN_EXPORTER: LangSmithOTLPTraceExporter;
DEFAULT_LANGSMITH_SPAN_PROCESSOR: BatchSpanProcessor;
DEFAULT_LANGSMITH_TRACER_PROVIDER: TracerProvider;
}