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前言
本小结我们来学习一下使用Turbine来聚合各个服务节点的Hystrix.stream信息。
案例
-
Eureka Server端编写(参考前例)。
-
Eureka Client端服务提供方编写(参考:SpringCloud微服务 之hystrix(五))
Mock两个服务调用方且各自都实现了监控各自Hystrix.stream端点的功能。- microservice-deal-broker-cloud-hystrix-dashboard
- microservice-deal-broker-cloud-hystrix-dashboard-2
-
Eureka Client Turbine Dashboard编写
- 项目结构
- CoreCode
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <artifactId>microservice-deal-broker-cloud-hystrix-dashboard-turbine</artifactId> <packaging>jar</packaging> <name>microservice-deal-broker-cloud-hystrix-dashboard-turbine</name> <description>Demo project for Spring Boot</description> <parent> <groupId>com.example</groupId> <artifactId>microservice-deal-parent</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <dependencies> <!-- Feignf --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-openfeign</artifactId> </dependency> <!-- springCloud Hystrix依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-hystrix</artifactId> </dependency> <!-- springCloud Hystrix依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId> </dependency> <!-- Turbine依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-turbine</artifactId> </dependency> </dependencies> </project>
server: port: 8084 spring: application: name: microservice-deal-broker-cloud-hystrix-dashboard-turbine eureka: client: serviceUrl: #defaultZone: http://localhost:8080/eureka/ defaultZone: http://Dustyone:[email protected]:8080/eureka/ instance: prefer-ip-address: true turbine: # 配置 Eureka 中的 serviceId 列表,指定要监控的服务 app-config: MICROSERVICE-DEAL-BROKER-CLOUD-HYSTRIX-DASHBOARD-2,MICROSERVICE-DEAL-BROKER-CLOUD-HYSTRIX-DASHBOARD aggregator: cluster-config: default cluster-name-expression: "'default'" # 指定集群名称 combine-host-port: true #表示同一主机上的服务通过host和port的组合来进行区分,默认情况下是使用host来区分,这样会使本地调试有问题 #开放所有的监控节点 management: endpoints: web: exposure: include: '*' #声明Feign中的Hystrix # 说明:请务必注意,从Spring Cloud Dalston开始,Feign默认是不开启Hystrix的。 # 因此,如使用Dalston请务必额外设置属性:feign.hystrix.enabled=true,否则断路器不会生效。 # 而,Spring Cloud Angel/Brixton/Camden中,Feign默认都是开启Hystrix的。无需设置该属性。 feign: hystrix: enabled: true #使用Feign时必须添加以下两项配置 ribbon: eureka: enabled: true #设置feign的hystrix响应超时时间(必须) hystrix: command: default: execution: isolation: thread: timeoutInMilliseconds: 5000
@Component public class InitiServlets { /** * 初始化Hystrix 容器 * @return */ @Bean public ServletRegistrationBean<Servlet> getHystrixSerlvet() { // HystrixStreamServlet HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet(); ServletRegistrationBean<Servlet> registrationBean = new ServletRegistrationBean<>(streamServlet); registrationBean.setLoadOnStartup(1); registrationBean.addUrlMappings("/hystrix.stream"); registrationBean.setName("HystrixMricsStreamServlet"); return registrationBean; } }
@SpringBootApplication @EnableDiscoveryClient @EnableFeignClients //开启FeignClient注解 @EnableCircuitBreaker //开启Hystrix熔断机制 @EnableHystrixDashboard @EnableTurbine //开启Hystrix Turbine聚合Dashboard public class MicroserviceDealBrokerHystrixDashBoardTurbineApplication { public static void main(String[] args) { SpringApplication.run(MicroserviceDealBrokerHystrixDashBoardTurbineApplication.class, args); } /** * 1被监控的所有服务节点都要开启Hystrix.stream监控,不然Turbine会报错 * * 2访问Turnbine.stream时需注意 * http://localhost:8084/turbine.stream * unable to connect to command metric stream: * 1)stream地址输入错误,一定要输入:ip:port/turbine.stream,可能会误写成:ip:port/turbine.stream,这样一来,反复检查都不容易检查出问题,因为本身后者在使用hystrix时是没错的,但用turbine时就不对了; * 2)缺少pom依赖或注解 */ }
- 项目结构
-
Eureka Client端服务提消费编写(单实例) (参考前例)。
-
访问被Turbine监控的服务节点:
http://localhost:8082/deal/1、http://localhost:8082/dealMock/1、http://localhost:8083/deal/1
、http://localhost:8083/dealMock/1:
-
手动shutdown服务提供方:
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再次访问被Turbine监控的服务节点:
http://localhost:8082/deal/1、http://localhost:8082/dealMock/1、http://localhost:8083/deal/1
、http://localhost:8083/dealMock/1:
由此便实现了使用Turbine聚合监控各个服务节点的Hystrix.stream信息。
小结
- 实现Turbine聚合监控各个服务节点Hystrix.stream信息,首先需要添加Turbine依赖:spring-cloud-starter-netflix-turbine然后在主类上声明:@EnableTurbine(Turbine所在的服务节点也必须先实现Hystrix.stream Dashboard监控功能)。
- Turbine监控的所有服务节点必须先实现Hystrix.stream Dashboard监控功能,否则Turbine监控服务会报异常。
- 访问Turnbine的Hystrix Dashboard时需注意:一定要输入:ip:port/turbine.stream否则无法进入监控页面。
- 本小结使用到的案例:microservice-deal-eureka-authentication、microservice-deal-cloud、microservice-deal-broker-cloud-hystrix-dashboard、microservice-deal-broker-cloud-hystrix-dashboard-2、microservice-deal-broker-cloud-hystrix-dashboard-turbine。