Add table with automatic neighbor relation data

[portal/ric-dashboard.git] / webapp-frontend / src / app / anr-xapp / anr-xapp.datasource.ts

diff --git a/webapp-frontend/src/app/anr-xapp/anr-xapp.datasource.ts b/webapp-frontend/src/app/anr-xapp/anr-xapp.datasource.ts
new file mode 100644 (file)
index 0000000..bca766c
--- /dev/null
+++ b/webapp-frontend/src/app/anr-xapp/anr-xapp.datasource.ts
@@ -0,0 +1,61 @@
+/*-
+ * ========================LICENSE_START=================================
+ * O-RAN-SC
+ * %%
+ * Copyright (C) 2019 AT&T Intellectual Property and Nokia
+ * %%
+ * 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.
+ * ========================LICENSE_END===================================
+ */
+
+import { CollectionViewer, DataSource} from '@angular/cdk/collections';
+import { Observable } from 'rxjs/Observable';
+import { catchError, finalize } from 'rxjs/operators';
+import { of } from 'rxjs/observable/of';
+import { BehaviorSubject } from 'rxjs/BehaviorSubject';
+import { ANRNeighborCellRelation } from '../interfaces/anr-xapp.types';
+import { ANRXappService } from '../services/anr-xapp/anr-xapp.service';
+
+// https://blog.angular-university.io/angular-material-data-table/
+export class ANRXappDataSource extends DataSource<ANRNeighborCellRelation> {
+
+    private relationsSubject = new BehaviorSubject<ANRNeighborCellRelation[]>([]);
+
+    private loadingSubject = new BehaviorSubject<boolean>(false);
+
+    public loading$ = this.loadingSubject.asObservable();
+
+    constructor(private anrXappService: ANRXappService) {
+        super();
+    }
+
+    loadTable(ggnodeb = '', servingCellNrcgi = '', neighborCellNrpci = '') {
+        this.loadingSubject.next(true);
+        this.anrXappService.getNcrtInfo(ggnodeb, servingCellNrcgi, neighborCellNrpci)
+            .pipe(
+                catchError(() => of([])),
+                finalize(() => this.loadingSubject.next(false))
+            )
+            .subscribe(ncrt => this.relationsSubject.next(ncrt));
+    }
+
+    connect(collectionViewer: CollectionViewer): Observable<ANRNeighborCellRelation[]> {
+        return this.relationsSubject.asObservable();
+    }
+
+    disconnect(collectionViewer: CollectionViewer): void {
+        this.relationsSubject.complete();
+        this.loadingSubject.complete();
+    }
+
+}