/*
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* Copyright [2020-2030] [https://www.stylefeng.cn]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Guns采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
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*
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* 1.请不要删除和修改根目录下的LICENSE文件。
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* 2.请不要删除和修改Guns源码头部的版权声明。
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* 3.请保留源码和相关描述文件的项目出处，作者声明等。
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* 4.分发源码时候，请注明软件出处 https://gitee.com/stylefeng/guns
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* 5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/stylefeng/guns
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* 6.若您的项目无法满足以上几点，可申请商业授权
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*/
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package cn.stylefeng.roses.kernel.dsctn;
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import cn.hutool.core.util.StrUtil;
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import cn.stylefeng.roses.kernel.dsctn.api.context.CurrentDataSourceContext;
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import cn.stylefeng.roses.kernel.dsctn.context.DataSourceContext;
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import javax.sql.DataSource;
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import java.util.Map;
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import static cn.stylefeng.roses.kernel.dsctn.api.constants.DatasourceContainerConstants.MASTER_DATASOURCE_NAME;
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/**
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* 动态数据源的实现，带切换功能的
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*
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* @author fengshuonan
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* @date 2020/11/1 0:08
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*/
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public class DynamicDataSource extends AbstractRoutingDataSource {
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/**
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* 决断当前正在进行的service或者mapper用哪个数据源
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*
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* @author fengshuonan
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* @date 2020/11/1 0:08
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*/
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@Override
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protected DataSource determineDataSource() {
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// 获取当前Context存储的数据源名称
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String dataSourceName = CurrentDataSourceContext.getDataSourceName();
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// 如果当前Context没有值，就用主数据源
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if (StrUtil.isEmpty(dataSourceName)) {
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dataSourceName = MASTER_DATASOURCE_NAME;
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}
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// 从数据源容器中获取对应的数据源
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Map<String, DataSource> dataSources = DataSourceContext.getDataSources();
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return dataSources.get(dataSourceName);
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}
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}
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