spring cloud:HystrixDashboard

 hystrix-dashboard-server

1. File-->new spring starter project

2.add dependency

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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

3.Edit application.yml

server:
  port: 9000
  
spring:
  application:
    name: hystrix-dashboard-server

#    
#eureka:
#  client:
#    service-url:
#      defaultZone: http://localhost:8761/eureka/

4.program

package com.smile;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.context.annotation.Bean;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;

@SpringBootApplication
@EnableHystrixDashboard
public class HystrixDashboardServerApplication {

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

}

5.Run

visit :  http://localhost:9000/hystrix 

输入要监控的地址 http://localhost:9001/actuator/hystrix.stream 点击 monitor

hystrix-dashboard-client

1. File-->new spring starter project

2.add dependency

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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

3.Edit application.yml

server:
  port: 9001
spring:
  application:
    name: hystrix-dashboard-client

eureka:
  client:
    service-url:
      defaulZone: http://localhost:8761/eureka/
      
management:
  endpoints:
    web:
      exposure:
        include: '*'

feign:
  hystrix:
    enabled: true

4.program

package com.smile;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
@EnableCircuitBreaker    //开启断路器，否则监控不到
public class HystrixDashboardClientApplication {

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

}

package com.smile.controller;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.smile.remote.HelloService;


@RestController
public class ConsumerController {

    @Autowired
    HelloService helloService;

    @RequestMapping("/hello/{name}")
    public String helloConsumer(@PathVariable("name") String name) {
        return helloService.getHello(name);
    }

}

package com.smile.remote;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@FeignClient(name = "producer",fallback = HelloServiceHystrix.class)
public interface HelloService {
    
    @RequestMapping("/getHello")
    public String getHello(@RequestParam String name);
}

package com.smile.remote;

import org.springframework.stereotype.Component;

@Component
public class HelloServiceHystrix implements HelloService{

    @Override
    public String getHello(String name) {
        return "hello "+name+",this is hystrix!";
    }

}

5.Run

visit: http://localhost:9001/hello/smile

   hello smile

   停止producer 再次访问 http://localhost:9001/hello/smile

 hello smile,this is hystrix!

监控也会监控到hystrix

hystrix-dashboard 就到这里了