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.datasource;
017
018import java.util.function.Supplier;
019
020public class DataSourceKey {
021
022    private static ThreadLocal<String> keyThreadLocal = new ThreadLocal<>();
023
024    public static void use(String dataSourceKey) {
025        keyThreadLocal.set(dataSourceKey);
026    }
027
028    public static <T> T use(String dataSourceKey, Supplier<T> supplier) {
029        try {
030            use(dataSourceKey);
031            return supplier.get();
032        } finally {
033            clear();
034        }
035    }
036
037    public static void use(String dataSourceKey, Runnable runnable) {
038        try {
039            use(dataSourceKey);
040            runnable.run();
041        } finally {
042            clear();
043        }
044    }
045
046    public static void clear() {
047        keyThreadLocal.remove();
048    }
049
050    public static String get() {
051        return keyThreadLocal.get();
052    }
053
054}