/*
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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.config.modular.listener;
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import cn.hutool.core.convert.Convert;
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import cn.hutool.core.util.ObjectUtil;
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import cn.hutool.db.DbUtil;
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import cn.hutool.db.Entity;
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import cn.stylefeng.roses.kernel.config.ConfigContainer;
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import cn.stylefeng.roses.kernel.config.api.context.ConfigContext;
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import cn.stylefeng.roses.kernel.config.api.exception.ConfigException;
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import cn.stylefeng.roses.kernel.config.api.exception.enums.ConfigExceptionEnum;
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import cn.stylefeng.roses.kernel.config.modular.factory.SysConfigDataFactory;
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import cn.stylefeng.roses.kernel.config.redis.RedisConfigContainer;
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import cn.stylefeng.roses.kernel.rule.context.ApplicationPropertiesContext;
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import cn.stylefeng.roses.kernel.rule.listener.ContextInitializedListener;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.boot.context.event.ApplicationContextInitializedEvent;
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import org.springframework.core.Ordered;
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import org.springframework.core.env.ConfigurableEnvironment;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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import java.util.List;
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import static cn.stylefeng.roses.kernel.config.api.exception.enums.ConfigExceptionEnum.APP_DB_CONFIG_ERROR;
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/**
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* 初始化系统配置表
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* <p>
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* 当spring装配好配置后，就去数据库读constants
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* <p>
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*
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* @author stylefeng
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* @date 2020/6/6 23:39
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*/
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@Slf4j
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public class ConfigInitListener extends ContextInitializedListener implements Ordered {
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@Override
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public int getOrder() {
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return Ordered.HIGHEST_PRECEDENCE + 100;
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}
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@Override
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public void eventCallback(ApplicationContextInitializedEvent event) {
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// 获取environment参数
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ConfigurableEnvironment environment = event.getApplicationContext().getEnvironment();
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// 是否采用redis进行sys_config缓存的装载和读取（true/false）
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String redisConfigCacheEnable = environment.getProperty("redis.config.cache.enable");
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Boolean redisConfigCacheEnableFlag = Convert.toBool(redisConfigCacheEnable, false);
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if (redisConfigCacheEnableFlag) {
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// 获取Redis的相关配置
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String redisHost = environment.getProperty("spring.redis.host");
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String redisPort = environment.getProperty("spring.redis.port");
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String redisPassword = environment.getProperty("spring.redis.password");
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String dbNumber = environment.getProperty("spring.redis.database");
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// 初始化Config Api
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ConfigContext.setConfigApi(new RedisConfigContainer(redisHost, Convert.toInt(redisPort, 6379), redisPassword, Convert.toInt(dbNumber, 0)));
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} else {
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// 初始化Config Api，内存方式
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ConfigContext.setConfigApi(new ConfigContainer());
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}
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// 初始化ApplicationPropertiesContext
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ApplicationPropertiesContext.getInstance().initConfigs(environment);
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// 获取数据库连接配置
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String dataSourceUrl = environment.getProperty("spring.datasource.url");
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String dataSourceUsername = environment.getProperty("spring.datasource.username");
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String dataSourcePassword = environment.getProperty("spring.datasource.password");
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String driverClassName = environment.getProperty("spring.datasource.driver-class-name");
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// 如果有为空的配置，终止执行
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if (ObjectUtil.hasEmpty(dataSourceUrl, dataSourceUsername, dataSourcePassword)) {
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throw new ConfigException(APP_DB_CONFIG_ERROR);
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}
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Connection conn = null;
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try {
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Class.forName(driverClassName);
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assert dataSourceUrl != null;
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conn = DriverManager.getConnection(dataSourceUrl, dataSourceUsername, dataSourcePassword);
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// 获取sys_config表的数据
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List<Entity> entityList = SysConfigDataFactory.getSysConfigDataApi(dataSourceUrl).getConfigs(conn);
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// 将查询到的参数配置添加到缓存
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if (ObjectUtil.isNotEmpty(entityList)) {
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entityList.forEach(sysConfig -> ConfigContext.me().putConfig(sysConfig.getStr("config_code"), sysConfig.getStr("config_value")));
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}
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} catch (ClassNotFoundException e) {
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log.error("初始化系统配置表失败，找不到{}类 : {}", driverClassName, e);
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throw new ConfigException(ConfigExceptionEnum.CLASS_NOT_FOUND_ERROR);
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} catch (SQLException sqlException) {
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log.error("初始化系统配置表失败，执行查询语句失败", sqlException);
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throw new ConfigException(ConfigExceptionEnum.CONFIG_SQL_EXE_ERROR);
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} finally {
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DbUtil.close(conn);
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}
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}
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}
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