Metrics and logs?

[dev-samples]

Its seems tracing just works out of the box when adding:

import { registerOTel } from '@vercel/otel';
export function register() {
    registerOTel('my-app');
}

Is it correct that this "no-code" configuration currently only works for tracing?

I could not see any metrics or logs being emitted out of the box (e.g. in prometheus connected to the otel collector).

I did find a similar issue here: #134 so it seems doable to get something up and running.

But maybe I am missing something in the docs that says its primarily intended for tracing or maybe I am missing some examples for metrics and logs?

[kyletaylored]

I've actually been digging into this lately and found a few use cases for generating metrics, logs, etc and documenting it in a sample project. See my instrumentation.ts:

import { registerOTel } from '@vercel/otel'
import { RuntimeNodeInstrumentation } from '@opentelemetry/instrumentation-runtime-node'
import { SERVICE_NAME, DEPLOY_ENV, SERVICE_VERSION, DEPLOY_REGION, CLOUD_REGION, GIT_REPO_URL } from '@/lib/config'
import { buildMetricReaders, buildMetricViews } from '@/lib/metrics'

export function register() {

  registerOTel({
    serviceName: SERVICE_NAME,
    attributes: {
      'deployment.environment': DEPLOY_ENV,
      'service.version': SERVICE_VERSION,
      'deployment.region': DEPLOY_REGION,
      'host.name': DEPLOY_REGION,
      'git.repository_url': GIT_REPO_URL,
    },

    // (experimental) RuntimeNodeInstrumentation collects event loop, GC, heap, and CPU metrics.
    metricReaders: buildMetricReaders(),
    views: buildMetricViews(),
    instrumentations: [new RuntimeNodeInstrumentation({ monitoringPrecision: 5000 })],
  })
}