Spring Cloud Alibaba基础教程：Sentinel使用Apollo存储规则

import com.alibaba.csp.sentinel.datasource.apollo.ApolloDataSource;
import com.alibaba.csp.sentinel.slots.block.RuleConstant;
import com.alibaba.csp.sentinel.slots.block.flow.FlowRule;
import com.alibaba.csp.sentinel.slots.block.flow.FlowRuleManager;
import com.ctrip.framework.apollo.openapi.client.ApolloOpenApiClient;
import com.ctrip.framework.apollo.openapi.dto.NamespaceDTO;
import com.ctrip.framework.apollo.openapi.dto.OpenItemDTO;
import com.ctrip.framework.apollo.openapi.dto.ReleaseDTO;
 
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
 
public class SentinelApolloConfig {
 
    private static final String APOLLO_APP_ID = "YourApolloAppId";
    private static final String APOLLO_META_URL = "YourApolloMetaServer";
    private static final String APOLLO_ENV = "YourApolloEnv";
    private static final String APOLLO_CLUSTER = "YourApolloCluster";
    private static final String NAMESPACE_NAME = "YourNamespace";
 
    public static void main(String[] args) {
        // 初始化Apollo Open API客户端
        ApolloOpenApiClient client = ApolloOpenApiClient.newBuilder()
                .withAppId(APOLLO_APP_ID)
                .withMetaServer(APOLLO_META_URL)
                .withEnv(APOLLO_ENV)
                .withCluster(APOLLO_CLUSTER)
                .build();
 
        // 创建FlowRule类型的Apollo数据源
        ApolloDataSource<List<FlowRule>> flowRuleApolloDataSource = new ApolloDataSource<>(NAMESPACE_NAME, ApolloDataSource.parserFlowRules);
 
        // 将Apollo数据源注册到FlowRuleManager
        FlowRuleManager.register2Property(flowRuleApolloDataSource.getProperty());
 
        // 从Apollo获取配置并发布
        ReleaseDTO releaseDTO = client.publishRelease(APOLLO_APP_ID, NAMESPACE_NAME, "default", "发布信息");
        System.out.println("发布成功: " + releaseDTO);
 
        // 等待配置生效
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
 
        // 注销Apollo数据源
        FlowRuleManager.unregister2Property(flowRuleApolloDataSource.getProperty());
    }
}

这段代码展示了如何使用Apollo作为Sentinel规则配置的存储。首先，它创建了一个ApolloOpenApiClient实例，用于与Apollo配置中心交互。接着，它定义了一个针对FlowRule的Apollo数据源，并将其注册到Sentinel的FlowRuleManager。最后，它演示了如何通过Apollo Open API发布配置并等待配置的更新。这个过程是使用Apollo作为Sentinel配置管理的一个基础示例。