fix(medusa, types, utils, event-bus-local): Revert retrieveSubscribers (#4002)

* fix(medusa, event-bus-redis, event-bus-local): Revert retrieveSubscribers as the wildcard prevent us from filtering

* Create calm-eggs-collect.md

---------

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

.changeset/calm-eggs-collect.md

@@ -0,0 +1,8 @@
+---
+"@medusajs/event-bus-local": patch
+"@medusajs/medusa": patch
+"@medusajs/types": patch
+"@medusajs/utils": patch
+---
+
+fix(medusa, event-bus-redis, event-bus-local): Revert retrieveSubscribers as the wildcard prevent us from filtering

packages/event-bus-local/src/services/event-bus-local.ts

@@ -86,7 +86,7 @@ export default class LocalEventBusService extends AbstractEventBusModuleService
     subscriber: Subscriber,
     context?: EventBusTypes.SubscriberContext
   ): this {
-    const existingSubscribers = this.retrieveSubscribers(event)
+    const existingSubscribers = this.eventToSubscribersMap_.get(event)
 
     if (existingSubscribers?.length) {
       const subIndex = existingSubscribers?.findIndex(

packages/medusa/src/services/event-bus.ts

@@ -137,7 +137,7 @@ export default class EventBusService
   ): Promise<TResult | void> {
     const manager = this.activeManager_
     const isBulkEmit = !isString(eventNameOrData)
-    let events: EventBusTypes.EmitData[] = isBulkEmit
+    const events: EventBusTypes.EmitData[] = isBulkEmit
       ? eventNameOrData.map((event) => ({
           eventName: event.eventName,
           data: event.data,
@@ -151,32 +151,23 @@ export default class EventBusService
           },
         ]
 
-    events = events.filter(
-      (event) =>
-        this.eventBusModuleService_?.retrieveSubscribers(event.eventName)
-          ?.length ?? false
-    )
+    /**
+     * We store events in the database when in an ongoing transaction.
+     *
+     * If we are in a long-running transaction, the ACID properties of a
+     * transaction ensure, that events are kept invisible to the enqueuer
+     * until the transaction has committed.
+     *
+     * This patterns also gives us at-least-once delivery of events, as events
+     * are only removed from the database, if they are successfully delivered.
+     *
+     * In case of a failing transaction, jobs stored in the database are removed
+     * as part of the rollback.
+     */
 
-    let stagedJobs: StagedJob[] = []
-    if (events.length) {
-      /**
-       * We store events in the database when in an ongoing transaction.
-       *
-       * If we are in a long-running transaction, the ACID properties of a
-       * transaction ensure, that events are kept invisible to the enqueuer
-       * until the transaction has committed.
-       *
-       * This patterns also gives us at-least-once delivery of events, as events
-       * are only removed from the database, if they are successfully delivered.
-       *
-       * In case of a failing transaction, jobs stored in the database are removed
-       * as part of the rollback.
-       */
-
-      stagedJobs = await this.stagedJobService_
-        .withTransaction(manager)
-        .create(events)
-    }
+    const stagedJobs = await this.stagedJobService_
+      .withTransaction(manager)
+      .create(events)
 
     return (!isBulkEmit ? stagedJobs[0] : stagedJobs) as unknown as TResult
   }

packages/types/src/event-bus/event-bus-module.ts

@@ -1,15 +1,6 @@
-import {
-  EmitData,
-  Subscriber,
-  SubscriberContext,
-  SubscriberDescriptor,
-} from "./common"
+import { EmitData, Subscriber, SubscriberContext } from "./common"
 
 export interface IEventBusModuleService {
-  retrieveSubscribers(
-    event: string | symbol
-  ): SubscriberDescriptor[] | undefined
-
   emit<T>(
     eventName: string,
     data: T,

packages/utils/src/event-bus/index.ts

@@ -50,10 +50,6 @@ export abstract class AbstractEventBusModuleService
     ])
   }
 
-  public retrieveSubscribers(event: string | symbol) {
-    return this.eventToSubscribersMap_.get(event)
-  }
-
   public subscribe(
     eventName: string | symbol,
     subscriber: EventBusTypes.Subscriber,
@@ -88,7 +84,7 @@ export abstract class AbstractEventBusModuleService
       throw new Error("Subscriber must be a function")
     }
 
-    const existingSubscribers = this.retrieveSubscribers(eventName)
+    const existingSubscribers = this.eventToSubscribersMap_.get(eventName)
 
     if (existingSubscribers?.length) {
       const subIndex = existingSubscribers?.findIndex(