2 * ========================LICENSE_START=================================
5 * Copyright (C) 2020 AT&T Intellectual Property
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ========================LICENSE_END===================================
21 import { CollectionViewer, DataSource } from '@angular/cdk/collections';
22 import { HttpErrorResponse } from '@angular/common/http';
23 import { Observable } from 'rxjs/Observable';
24 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
25 import { of } from 'rxjs/observable/of';
26 import { catchError, finalize } from 'rxjs/operators';
27 import { E2RanDetails, StatsDetails } from '../interfaces/e2-mgr.types';
28 import { E2ManagerService } from '../services/e2-mgr/e2-mgr.service';
29 import { NotificationService } from '../services/ui/notification.service';
30 import { StatsService } from '../services/stats/stats.service';
32 export class StatsDataSource extends DataSource<StatsDetails> {
34 private statsSubject = new BehaviorSubject<StatsDetails[]>([]);
36 private loadingSubject = new BehaviorSubject<boolean>(false);
38 public loading$ = this.loadingSubject.asObservable();
40 public rowCount = 1; // hide footer during intial load
42 constructor(private statsService: StatsService,
43 private notificationService: NotificationService) {
47 loadTable(instanceKey: string) {
48 this.loadingSubject.next(true);
49 this.statsService.getAppMetrics(instanceKey)
51 catchError( (her: HttpErrorResponse) => {
52 console.log('StatsDataSource failed: ' + her.message);
53 this.notificationService.error('Failed to get Stats details: ' + her.message);
56 finalize( () => this.loadingSubject.next(false) )
58 .subscribe( (stat: StatsDetails[] ) => {
59 this.rowCount = stat.length;
60 this.statsSubject.next(stat);
64 connect(collectionViewer: CollectionViewer): Observable<StatsDetails[]> {
65 return this.statsSubject.asObservable();
68 disconnect(collectionViewer: CollectionViewer): void {
69 this.statsSubject.complete();
70 this.loadingSubject.complete();