webapp-frontend/src/app/ei-coordinator/ei-producer.datasource.ts

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2019 Nordix Foundation
   6  * %%
   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
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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===================================
  19  */
  20
  21 import { Injectable } from '@angular/core';
  22 import { MatTableDataSource } from '@angular/material';
  23
  24 import { Observable } from 'rxjs/Observable';
  25 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
  26 import { of } from 'rxjs/observable/of';
  27
  28 import { EIProducer } from '../interfaces/ei.types';
  29 import { EIService } from '../services/ei/ei.service';
  30
  31 @Injectable({
  32     providedIn: 'root'
  33 })
  34
  35 export class EIProducerDataSource extends MatTableDataSource<EIProducer> {
  36
  37     producerSubject = new BehaviorSubject<EIProducer[]>([]);
  38
  39     private loadingSubject = new BehaviorSubject<boolean>(false);
  40
  41     public loading$ = this.loadingSubject.asObservable();
  42
  43     public rowCount = 1; // hide footer during intial load
  44
  45     constructor(
  46         private eiSvc: EIService) {
  47         super();
  48     }
  49
  50     loadProducers(): Observable<EIProducer[]> {
  51         this.loadingSubject.next(true);
  52         let producers: Array<EIProducer> = [];
  53         this.eiSvc.getProducerIds()
  54             .subscribe((prodIds: string[]) => {
  55                 console.log("ProducerIds: " + prodIds);
  56                 prodIds.forEach(id => {
  57                     let eiProducer = <EIProducer>{};
  58                     eiProducer.ei_producer_id = id;
  59                     this.eiSvc.getProducer(id).subscribe(producer => {
  60                         eiProducer.ei_producer_types = producer.supported_ei_types;
  61                     });
  62                     this.eiSvc.getProducerStatus(id).subscribe(prodStatus => {
  63                         eiProducer.status = prodStatus.opState.toString();
  64                     });
  65                     this.addProducerToSubject(eiProducer);
  66                     producers.push(eiProducer);
  67                 });
  68                 this.rowCount = this.producerSubject.value.length;
  69             });
  70         return of(producers);
  71     }
  72
  73     private addProducerToSubject(producer: EIProducer) {
  74         const currentValue = this.producerSubject.value;
  75         const updatedValue = [...currentValue, producer];
  76         this.producerSubject.next(updatedValue);
  77     }
  78
  79     connect(): BehaviorSubject<EIProducer[]> {
  80         return this.producerSubject;
  81     }
  82
  83     disconnect(): void {
  84         this.producerSubject.complete();
  85         this.loadingSubject.complete();
  86     }
  87 }