refactor(core): Refactor WorkflowStatistics code (no-changelog) (#6617)

refactor(core): Refactor WorkflowStatistics code

packages/cli/src/push/abstract.push.ts

@@ -1,6 +1,5 @@
 import { jsonStringify, LoggerProxy as Logger } from 'n8n-workflow';
 import type { IPushDataType } from '@/Interfaces';
-import { eventBus } from '../eventbus';
 
 export abstract class AbstractPush<T> {
 	protected connections: Record<string, T> = {};
@@ -11,7 +10,6 @@ export abstract class AbstractPush<T> {
 	protected add(sessionId: string, connection: T): void {
 		const { connections } = this;
 		Logger.debug('Add editor-UI session', { sessionId });
-		eventBus.emit('editorUiConnected', sessionId);
 
 		const existingConnection = connections[sessionId];
 		if (existingConnection) {

packages/cli/src/push/index.ts

@@ -1,3 +1,4 @@
+import { EventEmitter } from 'events';
 import { ServerResponse } from 'http';
 import type { Server } from 'http';
 import type { Socket } from 'net';
@@ -16,7 +17,7 @@ import type { IPushDataType } from '@/Interfaces';
 const useWebSockets = config.getEnv('push.backend') === 'websocket';
 
 @Service()
-export class Push {
+export class Push extends EventEmitter {
 	private backend = useWebSockets ? new WebSocketPush() : new SSEPush();
 
 	handleRequest(req: SSEPushRequest | WebSocketPushRequest, res: PushResponse) {
@@ -27,6 +28,7 @@ export class Push {
 		} else {
 			res.status(401).send('Unauthorized');
 		}
+		this.emit('editorUiConnected', req.query.sessionId);
 	}
 
 	send<D>(type: IPushDataType, data: D, sessionId: string | undefined = undefined) {