@hoangnam.io/qa-tools/otel/instrumentation.js

Logging, Error handling, Notifying for Express codebase

const opentelemetry = require("@opentelemetry/sdk-node");
const { getNodeAutoInstrumentations } = require("@opentelemetry/auto-instrumentations-node");
const { OTLPTraceExporter } = require("@opentelemetry/exporter-trace-otlp-proto");
const { OTLPMetricExporter } = require("@opentelemetry/exporter-metrics-otlp-proto");
const { PeriodicExportingMetricReader } = require("@opentelemetry/sdk-metrics");
const { Resource } = require("@opentelemetry/resources");
const { SemanticResourceAttributes } = require("@opentelemetry/semantic-conventions");
const { TraceExporter: GGTraceExporter } = require("@google-cloud/opentelemetry-cloud-trace-exporter");
const { NodeTracerProvider } = require("@opentelemetry/sdk-trace-node");
const { SimpleSpanProcessor, BatchSpanProcessor, ConsoleSpanExporter } = require("@opentelemetry/sdk-trace-base");

// resource
const resource = Resource.default().merge(
  new Resource({
    [SemanticResourceAttributes.SERVICE_NAME]: "LogLib",
    [SemanticResourceAttributes.SERVICE_VERSION]: "0.1.0",
  })
);

const otelEndpoint = process.env.OTEL_COLLECTOR_ENDPOINT;

// trace
const traceProvider = new NodeTracerProvider({ resource });
// traceProvider.addSpanProcessor(new SimpleSpanProcessor(new GGTraceExporter()));
// const otelTraceExporter = new OTLPTraceExporter({ url: `${otelEndpoint}/v1/traces`, headers: {} });
// traceProvider.addSpanProcessor(new SimpleSpanProcessor(otelTraceExporter));
// traceProvider.addSpanProcessor(new SimpleSpanProcessor(new ConsoleSpanExporter()));
traceProvider.register();

// metric
const otelMetricExporter = new OTLPMetricExporter({
  url: `${otelEndpoint}/v1/metrics`,
  headers: {},
  concurrencyLimit: 1,
});

const sdk = new opentelemetry.NodeSDK({
  resource,
  metricReader: new PeriodicExportingMetricReader({
    exporter: otelMetricExporter,
  }),
  // instrumentations: [getNodeAutoInstrumentations()],
  instrumentations: [getNodeAutoInstrumentations({ "@opentelemetry/instrumentation-fs": { enabled: false } })],
});
sdk.start();