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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | 6x 6x 6x 6x 6x 6x 6x 4x 6x 6x 3x 6x 3x 3x 3x 3x 1x 2x 1x 1x 6x | import { HttpClient } from '@angular/common/http'; import { Injectable } from '@angular/core'; import { ActivatedRouteSnapshot, CanActivate, CanActivateChild, Router } from '@angular/router'; import { of as observableOf } from 'rxjs'; import { catchError, map } from 'rxjs/operators'; /** * This service checks if a route can be activated by executing a * REST API call to '/api/<apiPath>/status'. If the returned response * states that the module is not available, then the user is redirected * to the specified <redirectTo> URL path. * * A controller implementing this endpoint should return an object of * the following form: * {'available': true|false, 'message': null|string}. * * The configuration of this guard should look like this: * const routes: Routes = [ * { * path: 'rgw/bucket', * component: RgwBucketListComponent, * canActivate: [AuthGuardService, ModuleStatusGuardService], * data: { * moduleStatusGuardConfig: { * apiPath: 'rgw', * redirectTo: 'rgw/501' * } * } * }, * ... */ @Injectable({ providedIn: 'root' }) export class ModuleStatusGuardService implements CanActivate, CanActivateChild { // TODO: Hotfix - remove WHITELIST'ing when a generic ErrorComponent is implemented static readonly WHITELIST: string[] = ['501']; constructor(private http: HttpClient, private router: Router) {} canActivate(route: ActivatedRouteSnapshot) { return this.doCheck(route); } canActivateChild(childRoute: ActivatedRouteSnapshot) { return this.doCheck(childRoute); } private doCheck(route: ActivatedRouteSnapshot) { Iif (route.url.length > 0 && ModuleStatusGuardService.WHITELIST.includes(route.url[0].path)) { return observableOf(true); } const config = route.data['moduleStatusGuardConfig']; return this.http.get(`api/${config.apiPath}/status`).pipe( map((resp: any) => { if (!resp.available) { this.router.navigate([config.redirectTo, resp.message || '']); } return resp.available; }), catchError(() => { this.router.navigate([config.redirectTo]); return observableOf(false); }) ); } } |