feat: migrate voice app, add otel/rum, dockerfile, k8s deployment with ingress

tracing.js

@@ -0,0 +1,71 @@
+// OpenTelemetry tracing and logging initialization for gibbz backend
+'use strict';
+
+const process = require('process');
+const { NodeSDK } = require('@opentelemetry/sdk-node');
+const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
+const { OTLPTraceExporter } = require('@opentelemetry/exporter-trace-otlp-http');
+const { OTLPLogExporter } = require('@opentelemetry/exporter-logs-otlp-http');
+const { BatchLogRecordProcessor } = require('@opentelemetry/sdk-logs');
+const { resourceFromAttributes } = require('@opentelemetry/resources');
+const { ATTR_SERVICE_NAME, ATTR_SERVICE_VERSION } = require('@opentelemetry/semantic-conventions');
+
+const serviceName = process.env.OTEL_SERVICE_NAME || 'gibbz';
+const serviceRelease = process.env.SERVICE_RELEASE || process.env.OTEL_SERVICE_RELEASE || process.env.APP_RELEASE || 'dev';
+const environment = process.env.ENVIRONMENT || process.env.NODE_ENV || 'production';
+const otelUrl = (process.env.OTEL_EXPORTER_OTLP_ENDPOINT || process.env.OTEL_URL || 'https://otel.k6n.net').replace(/\/+$/, '');
+const ingestKey = process.env.OTEL_INGEST_KEY || '';
+
+const headers = {};
+if (ingestKey) {
+  headers['X-Otel-Ingest-Key'] = ingestKey;
+}
+
+const resource = resourceFromAttributes({
+  [ATTR_SERVICE_NAME]: serviceName,
+  [ATTR_SERVICE_VERSION]: serviceRelease,
+  'service.name': serviceName,
+  'service.release': serviceRelease,
+  'service.environment': environment,
+});
+
+// Configure trace exporter
+const traceExporter = new OTLPTraceExporter({
+  url: `${otelUrl}/v1/traces`,
+  headers,
+});
+
+// Configure logs exporter
+const logExporter = new OTLPLogExporter({
+  url: `${otelUrl}/v1/logs`,
+  headers,
+});
+
+const logRecordProcessor = new BatchLogRecordProcessor(logExporter);
+
+const sdk = new NodeSDK({
+  resource,
+  traceExporter,
+  logRecordProcessor,
+  instrumentations: [
+    getNodeAutoInstrumentations({
+      '@opentelemetry/instrumentation-fs': { enabled: false },
+    }),
+  ],
+});
+
+try {
+  sdk.start();
+  console.log(`[otel] Initialized OpenTelemetry for ${serviceName} (release: ${serviceRelease}, env: ${environment}) -> ${otelUrl}`);
+} catch (err) {
+  console.error('[otel] Failed to start OpenTelemetry SDK:', err);
+}
+
+process.on('SIGTERM', () => {
+  sdk.shutdown()
+    .then(() => console.log('[otel] SDK shut down successfully'))
+    .catch((err) => console.error('[otel] Error shutting down SDK', err))
+    .finally(() => process.exit(0));
+});
+
+module.exports = { sdk };