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98 changes: 8 additions & 90 deletions packages/opentelemetry/README.md
Original file line number Diff line number Diff line change
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[![npm dm](https://img.shields.io/npm/dm/@sentry/opentelemetry.svg)](https://www.npmjs.com/package/@sentry/opentelemetry)
[![npm dt](https://img.shields.io/npm/dt/@sentry/opentelemetry.svg)](https://www.npmjs.com/package/@sentry/opentelemetry)

This package allows you to send your OpenTelemetry trace data to Sentry via OpenTelemetry SpanProcessors.
OpenTelemetry support for Sentry’s JavaScript SDKs.

If you are using `@sentry/node`, OpenTelemetry support is included out of the box. This package is only necessary if you
are setting up OpenTelemetry support for Sentry yourself.
## Documentation

## Installation
- [OpenTelemetry documentation](https://docs.sentry.io/platforms/javascript/guides/node/opentelemetry/)
- [Capture spans from OpenTelemetry APIs](https://docs.sentry.io/platforms/javascript/guides/node/opentelemetry/using-opentelemetry-apis/)
- [Use your own OpenTelemetry pipeline](https://docs.sentry.io/platforms/javascript/guides/node/opentelemetry/custom-setup/)

```bash
npm install @sentry/opentelemetry
## Support

# Or yarn
yarn add @sentry/opentelemetry
```

Note that `@sentry/opentelemetry` depends on the following peer dependencies:

- `@opentelemetry/api` version `1.0.0` or greater

## Usage

This package exposes a few building blocks you can add to your OpenTelemetry setup in order to capture OpenTelemetry
traces to Sentry.

This is how you can use this in your app:

1. Initialize Sentry, e.g. `@sentry/node`!
2. Call `setupEventContextTrace(client)`
3. Add `SentrySampler` as sampler
4. Add `SentrySpanProcessor` as span processor
5. Register the Sentry context manager (`SentryAsyncLocalStorageContextManager`, or `wrapContextManagerClass` for a custom base)
6. Add `SentryPropagator` as propagator
7. Setup OTEL-powered async context strategy for Sentry via `setOpenTelemetryContextAsyncContextStrategy()`

For example, you could set this up as follows:

```js
import * as Sentry from '@sentry/node';
import {
SentryAsyncLocalStorageContextManager,
SentryPropagator,
SentrySampler,
SentrySpanProcessor,
setupEventContextTrace,
setOpenTelemetryContextAsyncContextStrategy,
} from '@sentry/opentelemetry';
import { context, propagation, trace } from '@opentelemetry/api';

function setupSentry() {
Sentry.init({
dsn: 'xxx',
});

const client = Sentry.getClient();
setupEventContextTrace(client);

const provider = new BasicTracerProvider({
sampler: new SentrySampler(client),
});
provider.addSpanProcessor(new SentrySpanProcessor());

// Initialize the provider
trace.setGlobalTracerProvider(provider);
context.setGlobalContextManager(new SentryAsyncLocalStorageContextManager());

setOpenTelemetryContextAsyncContextStrategy();
}
```

A full setup example can be found in
[node-experimental](https://github.com/getsentry/sentry-javascript/blob/develop/packages/node-experimental).

## Sentry Tracer Provider

`SentryTracerProvider` is a minimal OpenTelemetry tracer provider which creates native Sentry spans directly.
It is useful when code uses the global OpenTelemetry API and you do not need the full OpenTelemetry SDK span processor
and exporter pipeline.

```js
import { trace } from '@opentelemetry/api';
import { SentryTracerProvider } from '@sentry/opentelemetry';

trace.setGlobalTracerProvider(new SentryTracerProvider());

const span = trace.getTracer('example').startSpan('work');
span.end();
```

In `@sentry/node`, this is the default tracer provider.

The `SentryTracerProvider` does not handle OpenTelemetry logs and metrics.

## Links

- [Official SDK Docs](https://docs.sentry.io/quickstart/)
- [Report a bug](https://github.com/getsentry/sentry-javascript/issues/new/choose)
- [Contributing](https://github.com/getsentry/sentry-javascript/blob/develop/CONTRIBUTING.md)
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