Integrate OpenTelemetry for Express.js with infrastack.ai

import { NodeSDK } from '@opentelemetry/sdk-node';
import { getNodeAutoInstrumentations } from '@opentelemetry/auto-instrumentations-node';
import { OTLPTraceExporter } from '@opentelemetry/exporter-trace-otlp-grpc';
import { Resource } from '@opentelemetry/resources';
import { SemanticResourceAttributes } from '@opentelemetry/semantic-conventions';
import { CompressionAlgorithm } from '@opentelemetry/otlp-exporter-base';
import { ATTR_SERVICE_NAME, ATTR_SERVICE_VERSION } from '@opentelemetry/semantic-conventions';

// Exporter options with compression set to Gzip
const exporterOptions = {
  compression: CompressionAlgorithm.GZIP,
};

// Trace exporter initialization
const traceExporter = new OTLPTraceExporter(exporterOptions);

// SDK initialization with exporter, auto-instrumentation, and resource attributes
const sdk = new NodeSDK({
  traceExporter,
  instrumentations: [getNodeAutoInstrumentations()],
  resource: new Resource({
    [ATTR_SERVICE_NAME]: "{{YOUR_SERVICE_NAME}}",
    [ATTR_SERVICE_VERSION]: "{{YOUR_SERVICE_VERSION}}",
  }),
});

// Start the SDK and register it with the OpenTelemetry API
sdk.start();

// Graceful shutdown of SDK on process exit
process.on("SIGTERM", () => {
  sdk
    .shutdown()
    .then(() => console.log("Tracing terminated"))
    .catch((error) => console.log("Error terminating tracing", error))
    .finally(() => process.exit(0));
});