| /* |
| * 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. |
| */ |
| |
| 'use strict'; |
| |
| // Fire me up! |
| |
| module.exports = { |
| implements: 'services/utils' |
| }; |
| |
| /** |
| * @returns {UtilsService} |
| */ |
| module.exports.factory = () => { |
| class UtilsService { |
| /** |
| * Generate token string. |
| * |
| * @param len length of string |
| * @returns {String} Random string. |
| */ |
| static randomString(len) { |
| const possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; |
| const possibleLen = possible.length; |
| |
| let res = ''; |
| |
| for (let i = 0; i < len; i++) |
| res += possible.charAt(Math.floor(Math.random() * possibleLen)); |
| |
| return res; |
| } |
| } |
| |
| return UtilsService; |
| }; |