Possible to configure Multiple Exporters using NodeSDK?

[NicholasGWK]

• [x] This only affects the JavaScript OpenTelemetry library
• [ ] This may affect other libraries, but I would like to get opinions here first

Hello! I may be reading docs/types incorrectly, but it seems like it's only possible to configure a single trace exporter(and logger actually?) using the NodeSDK?

I know multiple are supported via env vars/a full setup, but just wanted to check that my read was correct here (we're migrating vendors so want to switch my config to send to both for now as we don't have a collector yet).

If it's something desirable I could maybe take a crack at a PR, but also let me know if it's supposed to just cover the single case!

Cheers

[jclapadula]

Hey, It took me a while to find out how to do it (I think there is no example in the docs), but you have to use spanProcessors instead of traceExporter, something like:

  new NodeSDK({
    spanProcessors: [
      new BatchSpanProcessor(new OTLPTraceExporter(oneConfig)),
      new BatchSpanProcessor(new OTLPTraceExporter(anotherConfig)),
    ],
    // rest of the config
  })