events-backend: revert config addition for DefaultEventBroker

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/backend-legacy/src/index.ts

@@ -76,7 +76,6 @@ function makeCreateEnv(config: Config) {
   const eventsService = DefaultEventsService.create({ logger: root, config });
   const eventBroker = new DefaultEventBroker(
     root.child({ type: 'plugin' }),
-    config,
     eventsService,
   );
   const signalsService = DefaultSignalsService.create({

plugins/events-backend/report.api.md

@@ -18,7 +18,7 @@ import { LoggerService } from '@backstage/backend-plugin-api';
 // @public @deprecated
 export class DefaultEventBroker implements EventBroker {
   // @deprecated
-  constructor(logger: LoggerService, config?: Config, events?: EventsService);
+  constructor(logger: LoggerService, events?: EventsService);
   // (undocumented)
   publish(params: EventParams): Promise<void>;
   // (undocumented)
@@ -29,7 +29,7 @@ export class DefaultEventBroker implements EventBroker {
 
 // @public @deprecated
 export class EventsBackend {
-  constructor(logger: Logger, config?: Config);
+  constructor(logger: Logger);
   // (undocumented)
   addPublishers(
     ...publishers: Array<EventPublisher | Array<EventPublisher>>

plugins/events-backend/src/service/DefaultEventBroker.ts

@@ -15,7 +15,6 @@
  */
 
 import { LoggerService } from '@backstage/backend-plugin-api';
-import { Config } from '@backstage/config';
 import {
   DefaultEventsService,
   EventBroker,
@@ -42,8 +41,9 @@ export class DefaultEventBroker implements EventBroker {
    * An instance can be passed (required for a mixed mode), otherwise a new instance gets created internally.
    * @deprecated use `DefaultEventsService` directly instead
    */
-  constructor(logger: LoggerService, config?: Config, events?: EventsService) {
-    this.events = events ?? DefaultEventsService.create({ logger, config });
+  constructor(logger: LoggerService, events?: EventsService) {
+    this.events =
+      events ?? DefaultEventsService.create({ logger, useEventBus: 'never' });
   }
 
   async publish(params: EventParams): Promise<void> {

plugins/events-backend/src/service/EventsBackend.ts

@@ -21,7 +21,6 @@ import {
 } from '@backstage/plugin-events-node';
 import { Logger } from 'winston';
 import { DefaultEventBroker } from './DefaultEventBroker';
-import { Config } from '@backstage/config';
 
 /**
  * A builder that helps wire up all component parts of the event management.
@@ -34,8 +33,8 @@ export class EventsBackend {
   private publishers: EventPublisher[] = [];
   private subscribers: EventSubscriber[] = [];
 
-  constructor(logger: Logger, config?: Config) {
-    this.eventBroker = new DefaultEventBroker(logger, config);
+  constructor(logger: Logger) {
+    this.eventBroker = new DefaultEventBroker(logger);
   }
 
   setEventBroker(eventBroker: EventBroker): EventsBackend {