Frontend EI Coordinator

[portal/nonrtric-controlpanel.git] / webapp-frontend / src / app / ei-coordinator / ei-producer.datasource.ts

diff --git a/webapp-frontend/src/app/ei-coordinator/ei-producer.datasource.ts b/webapp-frontend/src/app/ei-coordinator/ei-producer.datasource.ts
new file mode 100644 (file)
index 0000000..866d785
--- /dev/null
+++ b/webapp-frontend/src/app/ei-coordinator/ei-producer.datasource.ts
@@ -0,0 +1,99 @@
+/*-
+ * ========================LICENSE_START=================================
+ * O-RAN-SC
+ * %%
+ * Copyright (C) 2019 Nordix Foundation
+ * %%
+ * 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 { DataSource } from '@angular/cdk/collections';
+import { HttpErrorResponse } from '@angular/common/http';
+import { MatSort } from '@angular/material';
+import { Observable } from 'rxjs/Observable';
+import { BehaviorSubject } from 'rxjs/BehaviorSubject';
+import { merge } from 'rxjs';
+import { of } from 'rxjs/observable/of';
+import { catchError, finalize, map } from 'rxjs/operators';
+import { EIProducer } from '../interfaces/ei.jobs';
+import { EIService } from '../services/ei/ei.service';
+import { NotificationService } from '../services/ui/notification.service';
+
+export class EIProducerDataSource extends DataSource<EIProducer> {
+
+    private producerSubject = new BehaviorSubject<EIProducer[]>([]);
+
+    private loadingSubject = new BehaviorSubject<boolean>(false);
+
+    public loading$ = this.loadingSubject.asObservable();
+
+    public rowCount = 1; // hide footer during intial load
+
+    constructor(
+        private eiSvc: EIService,
+        public sort: MatSort,
+        private notificationService: NotificationService) {
+        super();
+    }
+
+    loadTable() {
+        this.loadingSubject.next(true);
+        this.eiSvc.getEIProducers()
+            .pipe(
+                catchError((her: HttpErrorResponse) => {
+                    this.notificationService.error('Failed to get producers: ' + her.error);
+                    return of([]);
+                }),
+                finalize(() => this.loadingSubject.next(false))
+            )
+            .subscribe((prods: EIProducer[]) => {
+                console.log("Producers: " + prods);
+                this.rowCount = prods.length;
+                this.producerSubject.next(prods);
+            });
+    }
+
+    connect(): Observable<EIProducer[]> {
+        const dataMutations = [
+            this.producerSubject.asObservable(),
+            this.sort.sortChange
+        ];
+        return merge(...dataMutations).pipe(map(() => {
+            return this.getSortedData([...this.producerSubject.getValue()]);
+        }));
+    }
+
+    disconnect(): void {
+        this.producerSubject.complete();
+        this.loadingSubject.complete();
+    }
+
+    private getSortedData(data: EIProducer[]) {
+        if (!this.sort || !this.sort.active || this.sort.direction === '') {
+            return data;
+        }
+
+        return data.sort((a, b) => {
+            const isAsc = this.sort.direction === 'asc';
+            switch (this.sort.active) {
+                case 'ei_producer_id': return compare(a.ei_producer_id, b.ei_producer_id, isAsc);
+                default: return 0;
+            }
+        });
+    }
+}
+
+function compare(a: string, b: string, isAsc: boolean) {
+    return (a < b ? -1 : 1) * (isAsc ? 1 : -1);
+}