新版本Hystrix服务监控

将springcloud由D版本升级到F版本，是一个大版本的跃升，由 1.X升级到了2.X，所以改动量还是挺大的

依赖

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

启动类配置

@SpringBootApplication
@EnableHystrixDashboard  // 开启hystrix监控面板
public class HystrixDashBoardApp {

    public static void main(String[] args) {
        SpringApplication.run(HystrixDashBoardApp.class,args);
    }
}

所需监控的服务配置

启动类需要标注@EnableCircuitBreaker

对于所需要监控的服务还需要声明一个servletBean去和HystrixMetricsStreamServlet进行地址映射，否则无法在面板中监测到该服务

@Bean
    public ServletRegistrationBean<HystrixMetricsStreamServlet> getServlet(){
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean<HystrixMetricsStreamServlet> registrationBean = new ServletRegistrationBean<>(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }