001/*
002 *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
003 *  <p>
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *  <p>
008 *  http://www.apache.org/licenses/LICENSE-2.0
009 *  <p>
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package com.mybatisflex.core.mask;
017
018import java.util.HashMap;
019import java.util.Map;
020import java.util.function.Supplier;
021
022/**
023 * 数据脱敏工厂类
024 */
025public class MaskManager {
026
027    private MaskManager() {}
028
029    /**
030     * 脱敏处理器，type : processor
031     */
032    private static final Map<String, MaskProcessor> processorMap = new HashMap<>();
033
034    private static final ThreadLocal<Boolean> skipFlags = new ThreadLocal<>();
035
036
037    static {
038        registerMaskProcessor(Masks.MOBILE, Masks.MOBILE_PROCESSOR);
039        registerMaskProcessor(Masks.FIXED_PHONE, Masks.FIXED_PHONE_PROCESSOR);
040        registerMaskProcessor(Masks.ID_CARD_NUMBER, Masks.ID_CARD_NUMBER_PROCESSOR);
041        registerMaskProcessor(Masks.CHINESE_NAME, Masks.CHINESE_NAME_PROCESSOR);
042        registerMaskProcessor(Masks.ADDRESS, Masks.ADDRESS_PROCESSOR);
043        registerMaskProcessor(Masks.EMAIL, Masks.EMAIL_PROCESSOR);
044        registerMaskProcessor(Masks.PASSWORD, Masks.PASSWORD_PROCESSOR);
045        registerMaskProcessor(Masks.CAR_LICENSE, Masks.CAR_LICENSE_PROCESSOR);
046        registerMaskProcessor(Masks.BANK_CARD_NUMBER, Masks.BANK_CARD_PROCESSOR);
047    }
048
049
050    /**
051     * 注册处理器，用户可以注册新的脱敏处理器 或者 覆盖内置的处理器
052     *
053     * @param type      处理器类型
054     * @param processor 脱敏处理器
055     */
056    public static void registerMaskProcessor(String type, MaskProcessor processor) {
057        processorMap.put(type, processor);
058    }
059
060
061    /**
062     * 跳过脱敏处理
063     */
064    public static <T> T withoutMask(Supplier<T> supplier) {
065        try {
066            skipMask();
067            return supplier.get();
068        } finally {
069            restoreMask();
070        }
071    }
072
073    /**
074     * 跳过脱敏处理
075     */
076    public static void skipMask() {
077        skipFlags.set(Boolean.TRUE);
078    }
079
080
081    /**
082     * 恢复脱敏处理
083     */
084    public static void restoreMask() {
085        skipFlags.remove();
086    }
087
088
089    public static Object mask(String type, Object data) {
090        Boolean skipMask = skipFlags.get();
091        if (skipMask != null && skipMask) {
092            return data;
093        }
094
095        MaskProcessor maskProcessor = processorMap.get(type);
096        if (maskProcessor == null) {
097            throw new IllegalStateException("Can not get mask processor for by type: " + type);
098        }
099
100        return maskProcessor.mask(data);
101    }
102
103}