const { NodeSDK } = require('@opentelemetry/sdk-node');
const { OTLPTraceExporter } = require('@opentelemetry/exporter-trace-otlp-proto');
const { HttpInstrumentation } = require('@opentelemetry/instrumentation-http');
const { ExpressInstrumentation } = require('@opentelemetry/instrumentation-express');

const sdk = new NodeSDK({
  traceExporter: new OTLPTraceExporter(),
  instrumentations: [
    new HttpInstrumentation(),
    new ExpressInstrumentation(),
  ],
});

sdk.start();

process.on('SIGTERM', () => {
  sdk.shutdown()
    .then(() => console.log('tracing terminated'))
    .finally(() => process.exit(0));
});