| /** |
| * 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, Request, RequestMethod, RequestOptions, RequestOptionsArgs, Response} from '@angular/http'; |
| import {Observable} from 'rxjs/Observable'; |
| import {Subject} from 'rxjs/Subject'; |
| import {Store} from '@ngrx/store'; |
| import * as fromRoot from '../../store'; |
| import {LOGOUT} from '../../store/security/security.actions'; |
| |
| export enum Action { QueryStart, QueryStop } |
| |
| export const TENANT_HEADER = 'X-Tenant-Identifier'; |
| export const USER_HEADER = 'User'; |
| export const AUTHORIZATION_HEADER = 'Authorization'; |
| |
| @Injectable() |
| export class HttpClients { |
| |
| process: Subject<Action> = new Subject<Action>(); |
| |
| error: Subject<any> = new Subject<any>(); |
| |
| constructor(private http: Http, private store: Store<fromRoot.State>) { |
| } |
| |
| public get(url: string, options?: RequestOptionsArgs, silent?: boolean): Observable<any> { |
| return this.createRequest(RequestMethod.Get, url, undefined, options, silent); |
| } |
| |
| public post(url: string, body: any, options?: RequestOptionsArgs, silent?: boolean): Observable<any> { |
| return this.createRequest(RequestMethod.Post, url, body, options, silent); |
| } |
| |
| public put(url: string, body: any, options?: RequestOptionsArgs): Observable<any> { |
| return this.createRequest(RequestMethod.Put, url, body, options); |
| } |
| |
| public delete(url: string, options?: RequestOptionsArgs): Observable<any> { |
| return this.createRequest(RequestMethod.Delete, url, undefined, options); |
| } |
| |
| private _buildRequestOptions(method: RequestMethod, url: string, body: any, tenant: string, username: string, |
| accessToken: string, options?: RequestOptionsArgs): RequestOptions { |
| options = options || {}; |
| |
| const headers = new Headers(); |
| |
| if (!(body instanceof FormData)) { |
| headers.set('Accept', 'application/json'); |
| headers.set('Content-Type', 'application/json'); |
| } |
| |
| headers.set(TENANT_HEADER, tenant); |
| headers.set(USER_HEADER, username); |
| headers.set(AUTHORIZATION_HEADER, accessToken); |
| |
| const requestOptions: RequestOptions = new RequestOptions({ |
| method: method, |
| url: url, |
| body: body, |
| headers: headers |
| }); |
| |
| return requestOptions.merge(options); |
| } |
| |
| private createRequest(method: RequestMethod, url: string, body?: any, options?: RequestOptionsArgs, silent?: boolean): Observable<any> { |
| return this.store.select(fromRoot.getAuthenticationState) |
| .take(1) |
| .map(state => this._buildRequestOptions(method, url, body, state.tenant, state.username, state.authentication.accessToken, options)) |
| .flatMap(requestOptions => { |
| this.process.next(Action.QueryStart); |
| |
| const request: Observable<any> = this.http.request(new Request(requestOptions)) |
| .catch((err: any) => { |
| const error = err.json(); |
| if (silent) { |
| return Observable.throw(error); |
| } |
| |
| switch (error.status) { |
| case 409: |
| return Observable.throw(error); |
| case 401: |
| case 403: |
| this.store.dispatch({type: LOGOUT}); |
| return Observable.throw('User is not authenticated'); |
| default: |
| console.error('Error', error); |
| this.error.next(error); |
| return Observable.throw(error); |
| } |
| }).finally(() => this.process.next(Action.QueryStop)); |
| |
| return request.map((res: Response) => { |
| if (res.text()) { |
| try { |
| return res.json(); |
| } catch (err) { |
| return res.text(); |
| } |
| } |
| }); |
| }); |
| } |
| |
| } |