otf-frontend/client/src/app/error.interceptor.ts

   1 /*  Copyright (c) 2019 AT&T Intellectual Property.                             #\r
   2 #                                                                              #\r
   3 #   Licensed under the Apache License, Version 2.0 (the "License");            #\r
   4 #   you may not use this file except in compliance with the License.           #\r
   5 #   You may obtain a copy of the License at                                    #\r
   6 #                                                                              #\r
   7 #       http://www.apache.org/licenses/LICENSE-2.0                             #\r
   8 #                                                                              #\r
   9 #   Unless required by applicable law or agreed to in writing, software        #\r
  10 #   distributed under the License is distributed on an "AS IS" BASIS,          #\r
  11 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #\r
  12 #   See the License for the specific language governing permissions and        #\r
  13 #   limitations under the License.                                             #\r
  14 ##############################################################################*/\r
  15 \r
  16 \r
  17 import { Injectable } from '@angular/core';\r
  18 import { HttpRequest, HttpHandler, HttpEvent, HttpInterceptor } from '@angular/common/http';\r
  19 import { Observable, throwError } from 'rxjs';\r
  20 import { catchError } from 'rxjs/operators';\r
  21 import { Router } from '@angular/router';\r
  22 import { AuthService } from './shared/services/auth.service';\r
  23 \r
  24 \r
  25 @Injectable()\r
  26 export class ErrorInterceptor implements HttpInterceptor {\r
  27     constructor(private auth: AuthService, private router: Router) {}\r
  28 \r
  29     intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {\r
  30         return next.handle(request).pipe(catchError(err => {\r
  31             if (err.status === 401) {\r
  32                 // auto logout if 401 response returned from api\r
  33                 this.auth.logout();\r
  34                 this.router.navigateByUrl('/login');\r
  35             }\r
  36             \r
  37             const error = err.error.message || err.statusText;\r
  38             return throwError(error);\r
  39         }))\r
  40     }\r
  41 }