OpenTelemetry Support

You can configure your OpenTelemetry SDK to send traces and spans to Sentry.

Install

npm install @sentry/node @sentry/opentelemetry-node

Usage

const Sentry = require("@sentry/node");
const {
  SentrySpanProcessor,
  SentryPropagator,
} = require("@sentry/opentelemetry-node");

const opentelemetry = require("@opentelemetry/sdk-node");
const otelApi = require("@opentelemetry/api");
const {
  getNodeAutoInstrumentations,
} = require("@opentelemetry/auto-instrumentations-node");
const {
  OTLPTraceExporter,
} = require("@opentelemetry/exporter-trace-otlp-grpc");

// Make sure to call `Sentry.init` BEFORE initializing the OpenTelemetry SDK
Sentry.init({
  dsn: "__DSN__",
  tracesSampleRate: 1.0,
  // set the instrumenter to use OpenTelemetry instead of Sentry
  instrumenter: "otel",
  // ...
});

const sdk = new opentelemetry.NodeSDK({
  // Existing config
  traceExporter: new OTLPTraceExporter(),
  instrumentations: [getNodeAutoInstrumentations()],

  // Sentry config
  spanProcessor: new SentrySpanProcessor(),
  textMapPropagator: new SentryPropagator(),
});

sdk.start();

OpenTelemetry and Sentry

With Sentry’s OpenTelemetry SDK, an OpenTelemetry Span becomes a Sentry Transaction or Span. The first Span sent through the Sentry SpanProcessor is a Transaction, and any child Span gets attached to the first Transaction upon checking the parent Span context. This is true for the OpenTelemetry root Span and any top level Span in the system. For example, a request sent from frontend to backend will create an OpenTelemetry root Span with a corresponding Sentry Transaction. The backend request will create a new Sentry Transaction for the OpenTelemetry Span. The Sentry Transaction and Span are linked as a trace for navigation and error tracking purposes.

Additional Configuration

If you need more fine grained control over Sentry, take a look at the Configuration page. In case you'd like to filter out transactions before sending them to Sentry (to get rid of health checks, for example), you may find the Filtering page helpful.