Next.js observability with OpenTelemetry

npm install @vercel/otel @opentelemetry/sdk-logs @opentelemetry/exporter-logs-otlp-http

// instrumentation.ts (project root)
import { registerOTel } from "@vercel/otel";
import { OTLPLogExporter } from "@opentelemetry/exporter-logs-otlp-http";
import { SimpleLogRecordProcessor } from "@opentelemetry/sdk-logs";

export function register() {
  registerOTel({
    serviceName: "my-next-app",
    attributes: { environment: "production" },
    traceExporter: { url: "https://ingest.maple.dev/v1/traces" },
    logRecordProcessor: new SimpleLogRecordProcessor(
      new OTLPLogExporter({
        url: "https://ingest.maple.dev/v1/logs",
        headers: { Authorization: "Bearer your-api-key" },
      })
    ),
  });
}