Day17_18_SpringCloud教程之Hystrix Dashboard熔断监控面板

向右看齐 2024-02-19 20:52 41阅读 0赞

## Hystrix Dashboard熔断监控面板 ##

### 一. Hystrix Dashboard简介 ###

在微服务架构中为例保证程序的可用性,防止程序出错导致网络阻塞,出现了断路器模型.断路器的状况反应了一个程序的可用性和健壮性,它是一个重要指标.Hystrix Dashboard是作为断路器状态的一个组件,提供了数据监控和友好的图形化界面.

### 二. 具体实现 ###

本案例在前一篇博客的代码基础之上进行改造.

请参考:  
[https://blog.csdn.net/syc000666/article/details/96097567][https_blog.csdn.net_syc000666_article_details_96097567]

我们改造ribbon\_consumer服务消费者这个模块.

#### 1. 修改pom.xml文件 ####

添加熔断器面板依赖,同时也需要添加健康监测依赖包.

<dependencies>
       <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
       </dependency>
    
       
       <dependency>
          <groupId>org.springframework.cloud</groupId>
          <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
       </dependency>
    
       
       
       <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
       </dependency>
    
       <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
       </dependency>
    
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-actuator</artifactId>
       </dependency>
    
    
    </dependencies>

#### 2. 修改入口类,添加新的注解 ####

在程序的入口ServiceRibbonApplication类,添加@EnableHystrix注解开启断路器,这个是必须的,并且需要在程序中声明断路点HystrixCommand,然后再加上@EnableHystrixDashboard注解,开启HystrixDashboard.

package com.syc.cloud;
    
    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.client.loadbalancer.LoadBalanced;
    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.context.annotation.Bean;
    import org.springframework.web.client.RestTemplate;
    
    @SpringBootApplication
    @EnableDiscoveryClient //注意:必须是@EnableDiscoveryClient注解,不能是@EnableEurekaClient,否则无法实现负载均衡.
    //@EnableEurekaClient
    @EnableHystrix
    @EnableCircuitBreaker //开启服务熔断功能
    @EnableHystrixDashboard
    public class ServiceRibbonApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(ServiceRibbonApplication.class, args);
        }
    
        //创建负载均衡组件
        @Bean
        @LoadBalanced
        public RestTemplate restTemplate() {
            return new RestTemplate();
        }
    }

#### 3. 修改配置文件 ####

在application.yml中需要添加如下配置,否则不能获取端点信息.

#actuator设置
    management:
      endpoints:
        web:
          exposure:
            include: "*" #暴露所有端点,默认是info和health
      endpoint:
        health:
          show-details: always #默认是never

### 三. 启动项目,查看效果 ###

此时启动的项目如下:  
![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70][]

#### 1. 查看健康数据 ####

此时打开 [http://localhost:8764/actuator/hystrix.stream,可以看到一些具体的数据][http_localhost_8764_actuator_hystrix.stream].  
![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 1][]

#### 2. 打开Hystrix控制台 ####

打开[http://localhost:8764/hystrix][http_localhost_8764_hystrix] 可以看见以下界面:  
![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 2][]

然后在界面上依次输入[http://localhost:8764/actuator/hystrix.stream][http_localhost_8764_actuator_hystrix.stream 1] 、2000 、yyg,点击确定.  
![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 3][]

在另一个窗口输入[http://localhost:8764/hello?name=一一哥][http_localhost_8764_hello_name]  
![Image 1][]![20190716133329866.png][]

重新刷新hystrix.stream网页,你会看到良好的图形化界面:  
![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 4][]

[https_blog.csdn.net_syc000666_article_details_96097567]: https://blog.csdn.net/syc000666/article/details/96097567
[Image 1]: 
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190716133239203.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70
[http_localhost_8764_actuator_hystrix.stream]: http://localhost:8764/actuator/hystrix.stream,%E5%8F%AF%E4%BB%A5%E7%9C%8B%E5%88%B0%E4%B8%80%E4%BA%9B%E5%85%B7%E4%BD%93%E7%9A%84%E6%95%B0%E6%8D%AE
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190716133251931.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70
[http_localhost_8764_hystrix]: http://localhost:8764/hystrix
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20190716133307483.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70
[http_localhost_8764_actuator_hystrix.stream 1]: http://localhost:8764/actuator/hystrix.stream
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20190716133319835.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70
[http_localhost_8764_hello_name]: http://localhost:8764/hello?name=%E4%B8%80%E4%B8%80%E5%93%A5
[20190716133329866.png]: https://img-blog.csdnimg.cn/20190716133329866.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20190716133340712.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N5YzAwMDY2Ng==,size_16,color_FFFFFF,t_70