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    /**
031     * 脱敏处理器，type : processor
032     */
033    private static final Map<String, MaskProcessor> processorMap = new HashMap<>();
034
035    private static final ThreadLocal<Boolean> skipFlags = new ThreadLocal<>();
036
037
038    static {
039        registerMaskProcessor(Masks.MOBILE, Masks.MOBILE_PROCESSOR);
040        registerMaskProcessor(Masks.FIXED_PHONE, Masks.FIXED_PHONE_PROCESSOR);
041        registerMaskProcessor(Masks.ID_CARD_NUMBER, Masks.ID_CARD_NUMBER_PROCESSOR);
042        registerMaskProcessor(Masks.CHINESE_NAME, Masks.CHINESE_NAME_PROCESSOR);
043        registerMaskProcessor(Masks.ADDRESS, Masks.ADDRESS_PROCESSOR);
044        registerMaskProcessor(Masks.EMAIL, Masks.EMAIL_PROCESSOR);
045        registerMaskProcessor(Masks.PASSWORD, Masks.PASSWORD_PROCESSOR);
046        registerMaskProcessor(Masks.CAR_LICENSE, Masks.CAR_LICENSE_PROCESSOR);
047        registerMaskProcessor(Masks.BANK_CARD_NUMBER, Masks.BANK_CARD_PROCESSOR);
048    }
049
050
051    /**
052     * 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
053     *
054     * @param type      处理器类型
055     * @param processor 脱敏处理器
056     */
057    public static void registerMaskProcessor(String type, MaskProcessor processor) {
058        processorMap.put(type, processor);
059    }
060
061
062    /**
063     * 跳过脱敏处理
064     */
065    public static <T> T execWithoutMask(Supplier<T> supplier) {
066        try {
067            skipMask();
068            return supplier.get();
069        } finally {
070            restoreMask();
071        }
072    }
073
074    /**
075     * 跳过脱敏处理
076     */
077    public static void execWithoutMask(Runnable runnable) {
078        try {
079            skipMask();
080            runnable.run();
081        } finally {
082            restoreMask();
083        }
084    }
085
086    /**
087     * 跳过脱敏处理
088     */
089    public static void skipMask() {
090        skipFlags.set(Boolean.TRUE);
091    }
092
093
094    /**
095     * 恢复脱敏处理
096     */
097    public static void restoreMask() {
098        skipFlags.remove();
099    }
100
101
102    public static Object mask(String type, Object data) {
103        Boolean skipMask = skipFlags.get();
104        if (skipMask != null && skipMask) {
105            return data;
106        }
107
108        MaskProcessor maskProcessor = processorMap.get(type);
109        if (maskProcessor == null) {
110            throw new IllegalStateException("Can not get mask processor for by type: " + type);
111        }
112
113        return maskProcessor.mask(data);
114    }
115
116}