| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| import {Injectable} from '@angular/core'; |
| import {Headers, Http, Response, ResponseContentType} from '@angular/http'; |
| import {Observable} from 'rxjs/Observable'; |
| import {Store} from '@ngrx/store'; |
| import * as fromRoot from '../../store'; |
| import {AUTHORIZATION_HEADER, TENANT_HEADER, USER_HEADER} from '../http/http.service'; |
| import {State} from '../../store/security/authentication.reducer'; |
| |
| @Injectable() |
| export class ImageService { |
| |
| constructor(private http: Http, private store: Store<fromRoot.State>) { |
| } |
| |
| public getImage(url: string): Observable<Blob> { |
| return this.store.select(fromRoot.getAuthenticationState) |
| .take(1) |
| .map(this.mapHeader) |
| .switchMap((headers: Headers) => |
| this.http.get(url, { |
| responseType: ResponseContentType.Blob, |
| headers: headers |
| }) |
| .map((response: Response) => response.blob()) |
| .catch(() => Observable.empty())); |
| } |
| |
| |
| private mapHeader(authenticationState: State): Headers { |
| const headers = new Headers(); |
| |
| headers.set('Accept', 'application/json'); |
| |
| headers.set(TENANT_HEADER, authenticationState.tenant); |
| headers.set(USER_HEADER, authenticationState.username); |
| headers.set(AUTHORIZATION_HEADER, authenticationState.authentication.accessToken); |
| |
| return headers; |
| } |
| |
| } |