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Eric Zhao e58267012d Bump version to 1.8.1-SNAPSHOT 4 anos atrás
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src Polish code and README.md of sentinel-datasource-eureka 4 anos atrás
README.md Polish code and README.md of sentinel-datasource-eureka 4 anos atrás
pom.xml Bump version to 1.8.1-SNAPSHOT 4 anos atrás

README.md

Sentinel DataSource Eureka

Sentinel DataSource Eureka provides integration with Eureka so that Eureka can be the dynamic rule data source of Sentinel.

To use Sentinel DataSource Eureka, you should add the following dependency:

<dependency>
    <groupId>com.alibaba.csp</groupId>
    <artifactId>sentinel-datasource-eureka</artifactId>
    <version>x.y.z</version>
</dependency>

Then you can create an EurekaDataSource and register to rule managers.

SDK usage:

EurekaDataSource<List<FlowRule>> eurekaDataSource = new EurekaDataSource("app-id", "instance-id",
        Arrays.asList("http://localhost:8761/eureka", "http://localhost:8762/eureka", "http://localhost:8763/eureka"),
        "rule-key", flowRuleParser);
FlowRuleManager.register2Property(eurekaDataSource.getProperty());

Example for Spring Cloud Application:

@Bean
public EurekaDataSource<List<FlowRule>> eurekaDataSource(EurekaInstanceConfig eurekaInstanceConfig, EurekaClientConfig eurekaClientConfig) {

    List<String> serviceUrls = EndpointUtils.getServiceUrlsFromConfig(eurekaClientConfig,
            eurekaInstanceConfig.getMetadataMap().get("zone"), eurekaClientConfig.shouldPreferSameZoneEureka());

    EurekaDataSource<List<FlowRule>> eurekaDataSource = new EurekaDataSource(eurekaInstanceConfig.getAppname(),
            eurekaInstanceConfig.getInstanceId(), serviceUrls, "flowrules", new Converter<String, List<FlowRule>>() {
        @Override
        public List<FlowRule> convert(String o) {
            return JSON.parseObject(o, new TypeReference<List<FlowRule>>() {
            });
        }
    });

    FlowRuleManager.register2Property(eurekaDataSource.getProperty());
    return eurekaDataSource;
}

To refresh the rule dynamically, you need to call Eureka-REST-operations to update instance metadata:

PUT /eureka/apps/{appID}/{instanceID}/metadata?{ruleKey}={json of the rules}

Note: don’t forget to encode your JSON string in the url.