首页
学习
活动
专区
工具
TVP
发布
社区首页 >专栏 >聊聊NacosDiscoveryHealthIndicatorAutoConfiguration

聊聊NacosDiscoveryHealthIndicatorAutoConfiguration

原创
作者头像
code4it
修改2019-09-26 10:37:27
5910
修改2019-09-26 10:37:27
举报
文章被收录于专栏:码匠的流水账码匠的流水账

本文主要研究一下NacosDiscoveryHealthIndicatorAutoConfiguration

NacosDiscoveryHealthIndicatorAutoConfiguration

nacos-spring-boot-project/nacos-discovery-spring-boot-actuator/src/main/java/com/alibaba/boot/nacos/discovery/actuate/autoconfigure/NacosDiscoveryHealthIndicatorAutoConfiguration.java

@Configuration
@ConditionalOnClass({ HealthIndicator.class })
@AutoConfigureBefore({ EndpointAutoConfiguration.class })
@AutoConfigureAfter(NacosDiscoveryAutoConfiguration.class)
@ConditionalOnEnabledHealthIndicator(NacosDiscoveryConstants.ENDPOINT_PREFIX)
public class NacosDiscoveryHealthIndicatorAutoConfiguration {
​
    @Bean
    @ConditionalOnMissingBean
    public NacosDiscoveryHealthIndicator nacosDiscoveryHealthIndicator() {
        return new NacosDiscoveryHealthIndicator();
    }
​
}
  • NacosDiscoveryHealthIndicatorAutoConfiguration注册了NacosDiscoveryHealthIndicator

NacosDiscoveryHealthIndicator

nacos-spring-boot-project/nacos-discovery-spring-boot-actuator/src/main/java/com/alibaba/boot/nacos/discovery/actuate/health/NacosDiscoveryHealthIndicator.java

public class NacosDiscoveryHealthIndicator extends AbstractHealthIndicator {
​
    @Autowired
    private ApplicationContext applicationContext;
​
    private static final String UP_STATUS = "up";
​
    @Override
    protected void doHealthCheck(Health.Builder builder) throws Exception {
        builder.up();
        NacosServiceFactory nacosServiceFactory = CacheableEventPublishingNacosServiceFactory.getSingleton();
        for (NamingService namingService : nacosServiceFactory.getNamingServices()) {
            if (namingService instanceof NacosServiceMetaData) {
                NacosServiceMetaData nacosServiceMetaData = (NacosServiceMetaData) namingService;
                Properties properties = nacosServiceMetaData.getProperties();
                builder.withDetail(
                        JSON.toJSONString(
                                PropertiesUtils.extractSafeProperties(properties)),
                        namingService.getServerStatus());
            }
            if (!namingService.getServerStatus().equalsIgnoreCase(UP_STATUS)) {
                builder.down();
            }
        }
    }
}
  • NacosDiscoveryHealthIndicator继承了AbstractHealthIndicator,其doHealthCheck方法会遍历namingService,如果namingService为NacosServiceMetaData则将properties的json作为key,serverStatus作为value填充到detail中;接着判断其serverStatus是否为up,不是的话则标记为down

小结

NacosDiscoveryHealthIndicatorAutoConfiguration注册了NacosDiscoveryHealthIndicator;NacosDiscoveryHealthIndicator继承了AbstractHealthIndicator,其doHealthCheck方法会遍历namingService,如果namingService为NacosServiceMetaData则将properties的json作为key,serverStatus作为value填充到detail中;接着判断其serverStatus是否为up,不是的话则标记为down

doc

原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。

如有侵权,请联系 cloudcommunity@tencent.com 删除。

原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。

如有侵权,请联系 cloudcommunity@tencent.com 删除。

评论
登录后参与评论
0 条评论
热度
最新
推荐阅读
目录
  • NacosDiscoveryHealthIndicatorAutoConfiguration
  • NacosDiscoveryHealthIndicator
  • 小结
  • doc
领券
问题归档专栏文章快讯文章归档关键词归档开发者手册归档开发者手册 Section 归档