springcloud 08 Hystrix图形化DashBoard

#1.构建一个服务监控模块

##1.1创建模块cloud-consumer-hystrix-dashboard9001

##1.2pom文件依赖

 <dependencies>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web  -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- hystrix dashboard-->

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
        </dependency>

    </dependencies>

##1.3yml文件

server:
  port: 9001

##1.4主启动类

package com.atguigu.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;

@SpringBootApplication
@EnableHystrixDashboard
public class HyStrixBoardMain9001 {
    public static void main(String[] args) {
        SpringApplication.run(HyStrixBoardMain9001.class,args);
    }

}

##1.5启动

　　访问http://localhost:9001/hystrix，看到下图界面，表示搭建成功

　　

#2.被监控的服务配置

　　我这里有一个8001端口的服务

##2.1加入依赖

 <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
 </dependency>

##2.2启动类

需加入

    //此配置是为了服务监控而配置，和服务容错本身无关，是springcloud审计后的坑
    //ServletRegistrationBean因为springboot的默认路径不是/hystrix.stream，需要以下配置
    @Bean
    public ServletRegistrationBean getServlet(){
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }

完整

package com.atguigu.springcloud;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
@EnableEurekaClient  //标识自己是Eureka客户端(也就是一个服务) - 适用于Eureka
@EnableCircuitBreaker
public class HystrixPaymentMain8001 {
    public static void main(String[] args) {
        SpringApplication.run(HystrixPaymentMain8001.class,args);
    }

    //此配置是为了服务监控而配置，和服务容错本身无关，是springcloud审计后的坑
    //ServletRegistrationBean因为springboot的默认路径不是/hystrix.stream，需要以下配置
    @Bean
    public ServletRegistrationBean getServlet(){
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }

}

#3.监控

##3.1监控8001服务

　　在可视化页面输入 http://localhost:8001/hystrix.stream

点击 Monitor Stream，刚开始进入发现显示的是Loading。访问8001服务，使它熔断后，才会出现下图

翻译成中文页面是如下效果

##3.2可视化界面说明