Pino transport on NextJS cause Unknown worker assertion error

[bozzelliandrea]

Hi, I'm trying to send pino logs to grafana loki from a NextJS server side context, with pino-opentelemetry-transport I have this error:

Error [ERR_INTERNAL_ASSERTION]: Unknown worker message type message
This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
Please open an issue with this stack trace at https://github.com/nodejs/node/issues

    at Function.fail (node:internal/assert:20:9)
    at [kOnMessage] (node:internal/worker:354:12)
    at MessagePort.<anonymous> (node:internal/worker:232:57)
    at _ZoneDelegate.invokeTask (webpack-internal:///(ssr)/../../node_modules/.pnpm/[email protected]/node_modules/zone.js/fesm2015/zone.js:406:31)
    at Zone.runTask (webpack-internal:///(ssr)/../../node_modules/.pnpm/[email protected]/node_modules/zone.js/fesm2015/zone.js:178:47)
    at ZoneTask.invokeTask [as invoke] (webpack-internal:///(ssr)/../../node_modules/.pnpm/[email protected]/node_modules/zone.js/fesm2015/zone.js:487:34)
    at invokeTask (webpack-internal:///(ssr)/../../node_modules/.pnpm/[email protected]/node_modules/zone.js/fesm2015/zone.js:1661:18)
    at globalCallback (webpack-internal:///(ssr)/../../node_modules/.pnpm/[email protected]/node_modules/zone.js/fesm2015/zone.js:1692:29)
    at MessagePort.globalZoneAwareCallback (webpack-internal:///(ssr)/../../node_modules/.pnpm/[email protected]/node_modules/zone.js/fesm2015/zone.js:1725:16)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:820:20)
    at MessagePort.<anonymous> (node:internal/per_context/messageport:23:28)
    at MessagePort.callbackTrampoline (node:internal/async_hooks:130:17) {
  code: 'ERR_INTERNAL_ASSERTION'
}

About the code, this is my instrumentation config:

const OTEL_COLLECTOR_URL="http://localhost:4318";
diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);

const sdk = new NodeSDK({
  serviceName: "next-node-instrumentation",
  textMapPropagator: new W3CTraceContextPropagator(),
  traceExporter: new OTLPTraceExporter({
    url: `${OTEL_COLLECTOR_URL}/v1/traces`
  }),
  
  instrumentations: [
    getNodeAutoInstrumentations(),
    new PinoInstrumentation({
        logHook: (span, record) => {
            console.log("RECEIVE FROM HOOK")
        }
    }),
  ],
  
  logRecordProcessors: [
    new logs.SimpleLogRecordProcessor(new logs.ConsoleLogRecordExporter()),
    new logs.SimpleLogRecordProcessor(
        new OTLPLogExporter({
            url: `${OTEL_COLLECTOR_URL}/v1/logs`,
        }),
  )],  
})
sdk.start()

and this is an example POST route where pino is used:

export async function POST(request: Request) {
 const { url } = await request.json();
 const transport = pino.transport({
   target: 'pino-opentelemetry-transport'
 })
 
 const log = pino(transport)
 log.info("HELLO FROM PINO");
}

env

OTEL_EXPORTER_OTLP_PROTOCOL=http
OTEL_EXPORTER_OTLP_LOGS_PROTOCOL=http

OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4318
OTEL_EXPORTER_OTLP_LOGS_ENDPOINT=http://localhost:4318

node -v: 20.17.0
next: 14
pino: 9.4.0
pino-opentelemetry-transport: 1.0.1

Am I missing something inside the configuration?

[Vunovati]

Hello @bozzelliandrea, you should not create any logRecordProcessors when instantiating the SDK. pino-opentelemetry-transport will do that for you.

Try removing that first. If it does not work can you please create a simple way to reproduce this? I am not sure I'll be able to guess what your Next.js application looks like. If I can make it work I'd like to create an example of how to use the transport with Next.js.

[Starefossen]

Getting a ton of those in Next.js, without having any additional instrumentation config.