Sentinel规则持久化

首先 Sentinel 控制台通过 API 将规则推送至客户端并更新到内存中,接着注册的写数据源会将新的规则保存到本地的文件中。

示例代码:

1.编写处理类

java 复制代码
//规则持久化
public class FilePersistence implements InitFunc {
	@Value("spring.application:name")
	private String appcationName;
	
	@Override
	public void init() throws Exception {
	String ruleDir = System.getProperty("user.home") + "/sentinelrules/"+appcationName;
	String flowRulePath = ruleDir + "/flow-rule.json";
	String degradeRulePath = ruleDir + "/degrade-rule.json";
	String systemRulePath = ruleDir + "/system-rule.json";
	String authorityRulePath = ruleDir + "/authority-rule.json";
	String paramFlowRulePath = ruleDir + "/param-flow-rule.json";
	this.mkdirIfNotExits(ruleDir);
	this.createFileIfNotExits(flowRulePath);
	this.createFileIfNotExits(degradeRulePath);
	this.createFileIfNotExits(systemRulePath);
	this.createFileIfNotExits(authorityRulePath);
	this.createFileIfNotExits(paramFlowRulePath);
	
	// 流控规则
	ReadableDataSource<String, List<FlowRule>> flowRuleRDS = new FileRefreshableDataSource<>(
		flowRulePath,
		flowRuleListParser
	);
	FlowRuleManager.register2Property(flowRuleRDS.getProperty());
	WritableDataSource<List<FlowRule>> flowRuleWDS = new FileWritableDataSource<>(
		flowRulePath,
		this::encodeJson
	);
	WritableDataSourceRegistry.registerFlowDataSource(flowRuleWDS);
	
	// 降级规则
	ReadableDataSource<String, List<DegradeRule>> degradeRuleRDS = new FileRefreshableDataSource<>(
		degradeRulePath,
		degradeRuleListParser
	);
	DegradeRuleManager.register2Property(degradeRuleRDS.getProperty());
	WritableDataSource<List<DegradeRule>> degradeRuleWDS = new FileWritableDataSource<>(
		degradeRulePath,
		this::encodeJson
	);
	WritableDataSourceRegistry.registerDegradeDataSource(degradeRuleWDS);
	
	// 系统规则
	ReadableDataSource<String, List<SystemRule>> systemRuleRDS = new FileRefreshableDataSource<>(
		systemRulePath,
		systemRuleListParser
	);
	SystemRuleManager.register2Property(systemRuleRDS.getProperty());
	WritableDataSource<List<SystemRule>> systemRuleWDS = new FileWritableDataSource<>(
		systemRulePath,
		this::encodeJson
	);
	WritableDataSourceRegistry.registerSystemDataSource(systemRuleWDS);
	
	// 授权规则
	ReadableDataSource<String, List<AuthorityRule>> authorityRuleRDS = new FileRefreshableDataSource<>(
		authorityRulePath,
		authorityRuleListParser
	);
	AuthorityRuleManager.register2Property(authorityRuleRDS.getProperty());
	WritableDataSource<List<AuthorityRule>> authorityRuleWDS = new FileWritableDataSource<>(
		authorityRulePath,
		this::encodeJson
	);
	WritableDataSourceRegistry.registerAuthorityDataSource(authorityRuleWDS);
	
	// 热点参数规则
	ReadableDataSource<String, List<ParamFlowRule>> paramFlowRuleRDS = new FileRefreshableDataSource<>(
		paramFlowRulePath,
		paramFlowRuleListParser
	);
	ParamFlowRuleManager.register2Property(paramFlowRuleRDS.getProperty());
	WritableDataSource<List<ParamFlowRule>> paramFlowRuleWDS = new FileWritableDataSource<>(
		paramFlowRulePath,
		this::encodeJson
	);
	ModifyParamFlowRulesCommandHandler.setWritableDataSource(paramFlowRuleWDS);
	}
	private Converter<String, List<FlowRule>> flowRuleListParser = source -> JSON.parseObject(
		source,
		new TypeReference<List<FlowRule>>() {
		}
	);
	private Converter<String, List<DegradeRule>> degradeRuleListParser = source -> JSON.parseObject(
		source,
		new TypeReference<List<DegradeRule>>() {
		}
	);
	private Converter<String, List<SystemRule>> systemRuleListParser = source -> JSON.parseObject(
		source,
		new TypeReference<List<SystemRule>>() {
		}
	);
	private Converter<String, List<AuthorityRule>> authorityRuleListParser = source -> JSON.parseObject(
		source,
		new TypeReference<List<AuthorityRule>>() {
		}
	);
	private Converter<String, List<ParamFlowRule>> paramFlowRuleListParser = source -> JSON.parseObject(
		source,
		new TypeReference<List<ParamFlowRule>>() {
		}
	);
	private void mkdirIfNotExits(String filePath) throws IOException {
		File file = new File(filePath);
		if (!file.exists()) {
			file.mkdirs();
		}
	}
	private void createFileIfNotExits(String filePath) throws IOException {
		File file = new File(filePath);
		if (!file.exists()) {
			file.createNewFile();
		}
	}
	private <T> String encodeJson(T t) {
		return JSON.toJSONString(t);
	}
}

2.添加配置

在resources下创建配置目录 META-INF/services ,然后添加文件 com.alibaba.csp.sentinel.init.InitFunc 在文件中添加配置类的全路径

java 复制代码
com.zxt.config.FilePersistence
相关推荐
slowlybutsurely2 分钟前
Cursor快速入门
java·ai编程·cursor
天天摸鱼的java工程师8 分钟前
假设你在开发订单系统时遇到高并发下库存扣减出错,如何解决?由浅入深分析
java·后端·面试
都叫我大帅哥9 分钟前
Redis的ZSet:从“青铜”到“王者”的排序神器
java·redis
肖笙XiaoSheng20 分钟前
使用Gemini2.5 pro 优化我的定时任务(二)
java·后端·代码规范
小小霸王龙!22 分钟前
互联网大厂Java面试实录:Spring Boot与微服务在电商场景中的应用
java·spring boot·redis·微服务·电商
深栈解码25 分钟前
JUC并发编程 CAS运行机制详解
java·后端
草履虫建模26 分钟前
Postman - API 调试与开发工具 - 标准使用流程
java·测试工具·spring·json·测试用例·postman·集成学习
深栈解码26 分钟前
JUC并发编程 ThreadLocal解析
java·后端
衍生星球33 分钟前
Maven 3.9.6的下载和配置
java·maven·springboot
缘来是庄40 分钟前
设计模式之代理模式
java·设计模式·代理模式