无法使用Spring Cloud连接到Hystrix仪表板的Command Metric Stream [英] Unable to connect to Command Metric Stream for Hystrix Dashboard with Spring Cloud

问题描述

我有一个使用Spring Cloud的微服务项目，这是父母的摘录:

I have microservices project with Spring Cloud, the snippet from parent:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.7.RELEASE</version>
</parent>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Dalston.SR3</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

所有服务都在Eureka服务器下运行:

All services are running under Eureka server:

所有服务运行正常.我可以打给Postman适当的电话，一切正常.

All services are running fine. I can call make appropriate calls with Postman and everything works fine.

我有一个单独的服务来处理Hystrix仪表板，这是pom的一个片段:

I have separate service which handles Hystrix dashboard, a snippet from pom:

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

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

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

配置主类:

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

和配置yaml文件:

spring:
  application:
    name: Dashboard

server:
  port: 8000

eureka:
  client:
    fetchRegistry: true
    registerWithEureka: false
    serviceUrl:
      defaultZone: http://localhost:8761/eureka

我的下一个仪表板看上去是

I have next dashboard looking:

在控制台上的完整堆栈跟踪位于此处.以下是一些代码段:

Full stack trace from the console is here. Following is some snippet:

2018-04-12 11:28:25.089 ERROR 15762 --- [qtp295055909-16] ashboardConfiguration$ProxyStreamServlet : Error proxying request: http://localhost:8082/hystrix.stream
java.lang.RuntimeException: org.eclipse.jetty.io.EofException
    at org.springframework.cloud.netflix.hystrix.dashboard.HystrixDashboardConfiguration$ProxyStreamServlet.doGet(HystrixDashboardConfiguration.java:208)
....
Caused by: org.eclipse.jetty.io.EofException: null
...
Caused by: java.io.IOException: Broken pipe
...

使用弹簧执行器可以访问服务本身:

Service itself is accessible with spring actuator:

片段:

    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka</artifactId>
    </dependency>

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

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

Config类的外观:

Config class looks:

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

如何解决此问题?

推荐答案

最后，我找到了解决方案.

Finally, I found the solution.

问题是控制器API必须通过 HystrixCommand进入市场注释.

Problem was that Controller API has to be market by HystrixCommand annotation.

文档摘录:

Turbine AMQP by Spring Cloud offers a different model where each
application instance pushes the metrics from Hystrix commands to
Turbine through a central AMQP broker.

我在没有任何参数的情况下将其添加到所有Controller的方法中，如下所示:

I added it without any parameters to all Controller's methods, like following:

@RestController
@AllArgsConstructor
public class GuestController {
    private DinnerService dinnerService;

    @HystrixCommand
    @PostMapping("/dinner")
    public Integer startDinner(@RequestBody List<Integer> menuItems) {
        return dinnerService.startDinner(menuItems);
    }

    @HystrixCommand
    @DeleteMapping("/dinner/{tableId}")
    public void finishDinner(@PathVariable Integer tableId) {
        dinnerService.finishDinner(tableId);
    }
}

现在所有作品都像迷人的一样:

And now all works like charming:

现在我知道我离它太近了.

Now I understand that I was so close to it.

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