1 files changed, 36 insertions, 0 deletions
diff --git a/usecaseui-portal/src/app/core/services/eventQueue.service.ts b/usecaseui-portal/src/app/core/services/eventQueue.service.ts
new file mode 100644
index 00000000..e4c32c38
--- /dev/null
+++ b/usecaseui-portal/src/app/core/services/eventQueue.service.ts
@@ -0,0 +1,36 @@
+/*
+    Copyright (C) 2021 Huawei Canada, Inc. and others. All rights reserved.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+            http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+import { Injectable } from '@angular/core';
+import {Observable, Subject} from "rxjs/Rx";
+import {AppEvent} from "@src/app/core/services/appEvent";
+import {AppEventType} from "@src/app/core/services/appEventType";
+import {filter} from "rxjs/operators";
+
+@Injectable()
+export class EventQueueService {
+
+    private eventBroker = new Subject<AppEvent<any>>();
+
+    on(eventType: AppEventType): Observable<AppEvent<any>> {
+        return this.eventBroker.pipe(filter(event => event.type === eventType));
+    }
+
+    dispatch<T>(event: AppEvent<T>): void {
+        this.eventBroker.next(event);
+    }
+
+}
+\ No newline at end of file