Merge branch 'main' into feat/node/prom-client-implementation

plugins/node/instrumentation-runtime-node/src/instrumentation.ts

@@ -29,9 +29,12 @@ const DEFAULT_CONFIG: RuntimeNodeInstrumentationConfig = {
   monitoringPrecision: 10,
 };
 
-export class RuntimeNodeInstrumentation extends InstrumentationBase {
+export class RuntimeNodeInstrumentation extends InstrumentationBase<RuntimeNodeInstrumentationConfig> {
+  private _ELUs: EventLoopUtilization[] = [];
+  private _interval: NodeJS.Timeout | undefined;
   private _collectors: MetricCollector[] = [];
 
+
   constructor(config: RuntimeNodeInstrumentationConfig = {}) {
     super(
       PACKAGE_NAME,
@@ -77,6 +80,15 @@ export class RuntimeNodeInstrumentation extends InstrumentationBase {
   override enable() {
     if (!this._collectors) return;
 
+    this._clearELU();
+    this._addELU();
+    clearInterval(this._interval);
+    this._interval = setInterval(
+      () => this._addELU(),
+      this.getConfig().eventLoopUtilizationMeasurementInterval
+    );
+
+
     for (const collector of this._collectors) {
       collector.enable();
     }