Lison <dreamlison@163.com>, v1.0.0, 2023.10.03

Spring Cloud Alibaba-04-Sentinel规则持久化全面Nacos方式

Sentinel-Dashboard 添加规则Nacos双向绑定

官网文档地址：https://sentinelguard.io/zh-cn/docs/quick-start.html

思路
从动态规则扩展章节得知，可以通过NacosDataSource作为配置数据源
从Sentinel-Dashboard代码中可以得知，dashboard通过http请求推送配置变更

publishRules(entity.getApp(), entity.getIp(), entity.getPort()).get(5000, TimeUnit.MILLISECONDS);List<FlowRuleEntity> rules = repository.findAllByMachine(MachineInfo.of(app, ip, port));return sentinelApiClient.setFlowRuleOfMachineAsync(app, ip, port, rules);

所以，只需要在dashboard推送变更后，将配置保存到nacos中且搭配NacosDataSource扩展即可实现配置持久化

从dashboard各个规则的Controller中可以发现，每个Controller都有类似repository的注入

    @Autowiredprivate RuleRepository<DegradeRuleEntity, Long> repository;

负责规则的增删改查，默认提供的都是内存控制，例如InMemDegradeRuleStore ，每个内存控制类都继承同一个抽象类

public class InMemDegradeRuleStore extends InMemoryRuleRepositoryAdapter<DegradeRuleEntity>

只要在respository写操作后添加配置推送的nacos的操作

实现

注释掉test

        <dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-datasource-nacos</artifactId>
<!--            <scope>test</scope>--></dependency>

增加 NacosConfig配置

package com.alibaba.csp.sentinel.dashboard.config;import com.alibaba.nacos.api.NacosFactory;
import com.alibaba.nacos.api.PropertyKeyConst;
import com.alibaba.nacos.api.config.ConfigService;
import com.alibaba.nacos.api.exception.NacosException;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.StringUtils;import java.util.Properties;/*** @className: com.alibaba.csp.sentinel.dashboard.config-> NacosConfig* @description:* @author: Lison* @createDate: 2023-10-03*/
@Configuration
@EnableConfigurationProperties(NacosConfig.NacosProperties.class)
public class NacosConfig {@ConfigurationProperties(prefix = "nacos.config")public static class NacosProperties{private String group = "DEFAULT_GROUP";private String namespace;private String authDataId = "sentinel-dashboard-auth";private String username;private String password;private Long timeout = 3000L;private String serverAddr;public String getGroup() {return group;}public void setGroup(String group) {this.group = group;}public String getNamespace() {return namespace;}public void setNamespace(String namespace) {this.namespace = namespace;}public Long getTimeout() {