| /* |
| * 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 {BehaviorSubject} from 'rxjs'; |
| import { |
| HttpInterceptor, |
| HttpRequest, |
| HttpHandler, |
| HttpEvent, |
| HttpErrorResponse |
| } from '@angular/common/http'; |
| |
| import { Observable, throwError } from 'rxjs'; |
| import { switchMap, filter, take, catchError } from 'rxjs/operators'; |
| import { StorageService, AppRoutingService, ApplicationSecurityService } from '../services'; |
| import { HTTP_STATUS_CODES } from '../util'; |
| |
| @Injectable() export class ErrorInterceptor implements HttpInterceptor { |
| private isRefreshing = false; |
| private refreshTokenSubject: BehaviorSubject<any> = new BehaviorSubject<any>(null); |
| |
| constructor( |
| private jwtService: StorageService, |
| private routingService: AppRoutingService, |
| private auth: ApplicationSecurityService |
| ) { } |
| |
| intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> { |
| return next.handle(request).pipe( |
| catchError(error => { |
| if (error.error && error.error.message && error.error.message.indexOf('query param artifact') !== -1) return throwError(error); |
| if (error instanceof HttpErrorResponse) { |
| switch ((<HttpErrorResponse>error).status) { |
| case HTTP_STATUS_CODES.UNAUTHORIZED: |
| return this.handleUnauthorized(request, next); |
| case HTTP_STATUS_CODES.BAD_REQUEST: |
| return this.handleBadRequest(error, request, next); |
| default: |
| return throwError(error); |
| } |
| } else { |
| this.routingService.redirectToLoginPage(); |
| this.jwtService.destroyTokens(); |
| return throwError(error); |
| } |
| })); |
| } |
| |
| private addToken(request: HttpRequest<any>, token: string) { |
| return request.clone({ setHeaders: { 'Authorization': `Bearer ${token}` } }); |
| } |
| |
| private handleUnauthorized(request: HttpRequest<any>, next: HttpHandler) { |
| if (!this.isRefreshing) { |
| this.isRefreshing = true; |
| this.jwtService.destroyAccessToken(); |
| this.refreshTokenSubject.next(null); |
| |
| return this.auth.refreshToken().pipe( |
| switchMap((token: any) => { |
| this.isRefreshing = false; |
| this.refreshTokenSubject.next(this.addToken(request, token.access_token)); |
| return next.handle(request); |
| })); |
| |
| } else { |
| return this.refreshTokenSubject.pipe( |
| filter(token => token != null), |
| take(1), |
| switchMap(jwt => next.handle(this.addToken(request, jwt)))); |
| } |
| } |
| |
| private handleBadRequest(error, request: HttpRequest<any>, next: HttpHandler) { |
| if (error.url.indexOf('refresh') > -1) this.routingService.redirectToLoginPage(); |
| return next.handle(request); |
| } |
| } |