Sentinel1.8.6集成nacos

代码：https://gitee.com/gsls200808/sentinel-dashboard-nacos

jar包：https://gitee.com/gsls200808/sentinel-dashboard-nacos/releases/tag/v1.8.6.0

代码如果看不到可能需要登录。

官方参考文档：

动态规则扩展 · alibaba/Sentinel Wiki · GitHub

需要修改的代码如下：

为了便于后续版本集成nacos，简单讲一下集成思路

1.更改pom

修改sentinel-datasource-nacos的范围

将

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

改为

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

2.拷贝示例

将test目录下的com.alibaba.csp.sentinel.dashboard.rule.nacos包下的内容拷贝到src的 com.alibaba.csp.sentinel.dashboard.rule的目录

test目录只包含限流，其他规则参照创建即可。

创建时注意修改常量，并且在NacosConfig实现各种converter

3.修改controller

v2目录的FlowControllerV2

将

    @Autowired@Qualifier("flowRuleDefaultProvider")private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider;@Autowired@Qualifier("flowRuleDefaultPublisher")private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher;

改为

    @Autowired@Qualifier("flowRuleNacosProvider")private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider;@Autowired@Qualifier("flowRuleNacosPublisher")private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher;

controller目录的其他controller包括AuthorityRuleController DegradeController FlowControllerV1 ParamFlowRuleController SystemController

做如下更改(以DegradeController为例)

将

@Autowiredprivate SentinelApiClient sentinelApiClient;

改成

 @Autowired@Qualifier("degradeRuleNacosProvider")private DynamicRuleProvider<List<DegradeRuleEntity>> ruleProvider;@Autowired@Qualifier("degradeRuleNacosPublisher")private DynamicRulePublisher<List<DegradeRuleEntity>> rulePublisher;

将原有publishRules方法删除，统一改成

    private void publishRules(/*@NonNull*/ String app) throws Exception {List<DegradeRuleEntity> rules = repository.findAllByApp(app);rulePublisher.publish(app, rules);}

之后解决报错的地方即可。

获取所有rules的地方

将

 List<DegradeRuleEntity> rules = sentinelApiClient.fetchDegradeRuleOfMachine(app, ip, port);

改成

List<DegradeRuleEntity> rules = ruleProvider.getRules(app);

原有调用publishRules方法的地方，删除掉

在上一个try catch方法里加上

publishRules(entity.getApp());

这里的entity.getApp()也有可能是oldEntity.getApp()/app等变量。根据删除的publishRules代码片段推测即可。

4.修改前端文件

文件路径:src/main/webapp/resources/app/scripts/directives/sidebar/sidebar.html

将

  <a ui-sref="dashboard.flowV1({app: entry.app})">

改成

    <a ui-sref="dashboard.flow({app: entry.app})">

5.最后打包即可

执行命令打包成jar

mvn clean package

运行方法与官方jar一致，不做赘述

6.微服务程序集成

pom.xml添加

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

配置文件application.yml添加

spring:cloud:sentinel:datasource:# 名称随意flow:nacos:server-addr: 192.168.11.5:8848dataId: ${spring.application.name}-flow-rulesgroupId: SENTINEL_GROUP# 规则类型，取值见：# org.springframework.cloud.alibaba.sentinel.datasource.RuleTyperule-type: flowdegrade:nacos:server-addr: 192.168.11.5:8848dataId: ${spring.application.name}-degrade-rulesgroupId: SENTINEL_GROUPrule-type: degradesystem:nacos:server-addr: 192.168.11.5:8848dataId: ${spring.application.name}-system-rulesgroupId: SENTINEL_GROUPrule-type: systemauthority:nacos:server-addr: 192.168.11.5:8848dataId: ${spring.application.name}-authority-rulesgroupId: SENTINEL_GROUPrule-type: authorityparam-flow:nacos:server-addr: 192.168.11.5:8848dataId: ${spring.application.name}-param-flow-rulesgroupId: SENTINEL_GROUPrule-type: param-flow

7.测试验证

在sentinel控制台界面添加几个流控规则后尝试关闭微服务和sentinel，然后重新打开sentinel和微服务，看流控规则是否还在。