上一篇文章讲述了如何利用Hystrix Dashboard去监控断路器的Hystrix command。当我们有很多个服务的时候,这就需要聚合所有服务的Hystrix Dashboard的数据了。这就需要用到Spring Cloud的另一个组件了,即Hystrix Turbine。
一、Hystrix Turbine简介
看单个的Hystrix Dashboard的数据并没有什么多大的价值,要想看这个系统的Hystrix Dashboard数据就需要用到Hystrix Turbine。Hystrix Turbine将每个服务Hystrix Dashboard数据进行了整合。Hystrix Turbine的使用非常简单,只需要引入相应的依赖和加上注解和配置就可以了。
二、准备工作
本文使用的工程为上一篇文章的工程,在此基础上进行改造。因为我们需要多个服务的Dashboard,所以需要再建一个服务,取名为service-lucy,它的基本配置同service-hi
三、创建service-turbine
引入相应的依赖:
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>4.0.0modelVersion> <groupId>com.forezpgroupId> <artifactId>service-turbineartifactId> <version>0.0.1-SNAPSHOTversion> <packaging>jarpackaging> <name>service-turbinename> <description>Demo project for Spring Bootdescription> <parent> <groupId>com.forezpgroupId> <artifactId>sc-f-chapter13artifactId> <version>0.0.1-SNAPSHOTversion> parent> <dependencies> <dependency> <groupId>org.springframework.cloudgroupId> <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId> dependency> <dependency> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-starter-webartifactId> dependency> <dependency> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-starter-actuatorartifactId> dependency> <dependency> <groupId>org.springframework.cloudgroupId> <artifactId>spring-cloud-starter-netflix-hystrixartifactId> dependency> <dependency> <groupId>org.springframework.cloudgroupId> <artifactId>spring-cloud-starter-netflix-hystrix-dashboardartifactId> dependency> <dependency> <groupId>org.springframework.cloudgroupId> <artifactId>spring-cloud-starter-netflix-turbineartifactId> dependency> dependencies> <build> <plugins> <plugin> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-maven-pluginartifactId> plugin> plugins> build> project>
在其入口类ServiceTurbineApplication加上注解@EnableTurbine,开启turbine,@EnableTurbine注解包含了@EnableDiscoveryClient注解,即开启了注册服务。
package com.forezp.serviceturbine; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; import org.springframework.cloud.netflix.hystrix.EnableHystrix; import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard; import org.springframework.cloud.netflix.turbine.EnableTurbine; import org.springframework.web.bind.annotation.RestController; @SpringBootApplication @EnableEurekaClient @EnableDiscoveryClient @RestController @EnableHystrix @EnableHystrixDashboard @EnableCircuitBreaker @EnableTurbine public class ServiceTurbineApplication { /** * http://localhost:8764/turbine.stream */ public static void main(String[] args) { SpringApplication.run(ServiceTurbineApplication.class, args); } }
配置文件application.yml:
server:
port: 8764
spring:
application:
name: service-turbine
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8761/eureka/
management:
endpoints:
web:
exposure:
include: "*"
cors:
allowed-origins: "*"
allowed-methods: "*"
turbine:
app-config: service-hi,service-lucy
aggregator:
clusterConfig: default
clusterNameExpression: new String("default")
combine-host: true
instanceUrlSuffix:
default: actuator/hystrix.stream
四、Turbine演示
依次开启eureka-server、service-hi、service-lucy、service-turbine工程。
打开浏览器输入:http://localhost:8764/turbine.stream,界面如下:
依次请求:
http://localhost:8762/hi?name=forezp
http://localhost:8763/hi?name=forezp
打开:http://localhost:8763/hystrix,输入监控流http://localhost:8764/turbine.stream
点击monitor stream 进入页面:
可以看到这个页面聚合了2个service的hystrix dashbord数据。
源码:https://github.com/CMRcircle/learnspringcloud/tree/master/sc-f-chapter13