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
  23 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
  24 import { mergeMap, finalize } from 'rxjs/operators';
  25 import { Observable, forkJoin, of } from 'rxjs';
  26
  27 import { EIProducer } from '../interfaces/ei.types';
  28 import { EIService } from '../services/ei/ei.service';
  29
  30 @Injectable({
  31     providedIn: 'root'
  32 })
  33
  34 export class EIProducerDataSource {
  35
  36     private producers: Array<EIProducer> = [];
  37
  38     public eiProducers(): EIProducer[] {
  39         return this.producers;
  40     }
  41
  42     public eiProducersSubject(): Observable<EIProducer[]> {
  43         return this.producersSubject.asObservable() as Observable<EIProducer[]>;
  44     }
  45
  46     private loadingSubject = new BehaviorSubject<boolean>(false);
  47     private producersSubject = new BehaviorSubject<EIProducer[]>([]);
  48
  49     public loading$ = this.loadingSubject.asObservable();
  50
  51     public rowCount = 1; // hide footer during intial load
  52
  53     constructor(
  54         private eiSvc: EIService) {
  55     }
  56
  57     loadProducers() {
  58         this.loadingSubject.next(true);
  59         this.producers = [];
  60
  61         this.eiSvc.getProducerIds().pipe(
  62             mergeMap(prodIds =>
  63                 forkJoin(prodIds.map(id => {
  64                     return forkJoin([
  65                         of(id),
  66                         this.eiSvc.getProducer(id),
  67                         this.eiSvc.getProducerStatus(id)
  68                     ])
  69                 })
  70                 )),
  71             finalize(() => this.loadingSubject.next(false))
  72         ).subscribe(result => {
  73             this.producers = result.map(producer => {
  74                 let eiProducer = <EIProducer>{};
  75                 eiProducer.ei_producer_id = producer[0];
  76                 eiProducer.ei_producer_types = producer[1].supported_ei_types;
  77                 eiProducer.status = producer[2].operational_state.toString();
  78                 return eiProducer;
  79             });
  80             this.producersSubject.next(this.producers);
  81         });
  82         this.rowCount = this.producers.length;
  83     }
  84 }