15、Feign整合断路器监控Hystrix Dashboard
Ribbon可以整合整合断路器监控Hystrix Dashboard,Feign也不能少, 本篇讲解一下Feign如何整合断路器监控Hystrix Dashboard。本篇主要整合sc-eureka-client-consumer-feign-hystrix项目和sc-hystrix-dashboard项目。
1、新建项目sc-feign-hystrix-dashboard,对应的pom.xml文件如下
<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> <groupId>spring-cloud</groupId> <artifactId>sc-feign-hystrix-dashboard</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>sc-feign-hystrix-dashboard</name> <url>http://maven.apache.org</url> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.4.RELEASE</version> </parent> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Finchley.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> </properties> <dependencies> <!-- 说明是一个 eureka client --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-feign</artifactId> <version>1.4.5.RELEASE</version> </dependency> --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-openfeign</artifactId> </dependency> <!-- <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId> <version>1.4.5.RELEASE</version> </dependency> --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId> </dependency> <!-- <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix</artifactId> <version>1.4.5.RELEASE</version> </dependency> --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-hystrix</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> </dependencies> </project>
说明:可以看出这个pom.xml文件是sc-eureka-client-consumer-feign-hystrix项目和sc-hystrix-dashboard项目的并集。
2、新建spring root 启动类FeignDashboardApplication.java
package sc.consumer; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard; import org.springframework.cloud.openfeign.EnableFeignClients; @SpringBootApplication @EnableEurekaClient @EnableFeignClients @EnableHystrixDashboard public class FeignDashboardApplication { public static void main(String[] args) { SpringApplication.run(FeignDashboardApplication.class, args); } }
这个启动类的注解是sc-eureka-client-consumer-feign-hystrix项目和sc-hystrix-dashboard项目的并集
3、其他项目文件说明如下,具体见源码
4、启动注册中心sc-eureka-server和服务提供者sc-eureka-client-provider,并确保启动成功
5、启动sc-feign-hystrix-dashboard项目,并验证是否启动成功
方式一:访问注册中心查看sc-feign-hystrix-dashboard项目配置的服务名是否注册成功
方式二:访问仪表盘Dashboard对的地址http://127.0.0.1:5800/hystrix
6、使用Hystrix Dashboard查看服务情况
在下图标注处输入http://127.0.0.1:5800/hystrix.stream
然后点击Monitor Stream按钮
7、使用postman访问任意服务接口,以访问获取用户信息接口为例
http://127.0.0.1:5800/feign/user/getUser/3
尽量多访问几次,然后查看仪表盘Bashboard监控后台,发现之前一直处于Loading的界面发生了变化,如下图,图中单元具体含义可以访问网站
https://github.com/Netflix-Skunkworks/hystrix-dashboard/wiki
访问http://127.0.0.1:5800/hystrix.stream也出现大量数据,这些数据就是对服务的监控数据。
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