十四：Spring Cloud 之Hystrix Dashboard結合Turbine

原創 AlienStar 2018-09-26 08:46

文章目錄

1. 簡介

Turbine (provided by the Spring Cloud Netflix project), aggregates multiple instances Hystrix metrics streams, so the dashboard can display an aggregate view. Turbine uses the DiscoveryClient interface to lookup relevant instances.

Hystrix是Netflix解決自己業務不穩定性的一個限流容錯框架，可以幫助我們解決微服務架構體系中的限流、降級、熔斷等功能。提高系統穩定性，提供了完善的監控實現，並且Hystrix可以根據監控數據動態調整內部處理機制。

Hystrix Dashboard提供了數字與圖形化的調用監控情況。結合Turbine可實現多Hystrix實例監控整合。

2. 代碼實現

2.1 涉及的模塊及整體步驟

2.1.1 涉及的模塊

  • eureka-server-singleton：微服務的服務註冊中心，限流熔斷針對的是服務調用異常的處理。
  • eureka-hystrix-dashboard
  • eureka-hystrix-dashboard-another
  • eureka-hystrix-dashboard-turbine：圖形化展示數據監控情況

2.1.2 整體步驟

  1. 實現eureka-server-singleton
  2. 實現eureka-hystrix-dashboard
  3. 實現eureka-hystrix-dashboard-another
  4. 實現eureka-hystrix-dashboard-turbine
  5. 調用eureka-hystrix-dashboard與eureka-hystrix-dashboard-another提供的服務接口
  6. 打開eureka-hystrix-dashboard-turbine的監控界面，輸入相關信息，查看調用情況

2.2 源代碼

2.2.1 Github地址

https://github.com/andyChenHuaYing/spring-cloud-demo

2.3 eureka-server-singleton

與 二：Spring Cloud 之Eureka服務發佈與註冊沒有任何區別。

2.4 eureka-hystrix-dashboard

與十三：Spring Cloud 之Hystrix Dashboard#2.4沒有任何區別

2.4 eureka-hystrix-dashboard-another

2.4.1 整體實現

  1. pom.xml：引入相關依賴，具體查看下方具體代碼
  2. application.yml：指定端口，應用名，註冊中心訪問地址信息
  3. bootstrap.yml：指定公開SpringBoot的actuator監控端點爲所有
  4. EurekaHystrixDashboardApplication：Spring boot啓動類，提供一個簡單的REST服務接口

2.4.2 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-cloud-finchley-demo</artifactId>
        <groupId>org.oscar.scd</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>eureka-hystrix-dashboard-another</artifactId>

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

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

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-hystrix-dashboard -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
            <version>1.4.5.RELEASE</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-hystrix -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
            <version>1.4.5.RELEASE</version>
        </dependency>
    </dependencies>
</project>

2.4.3 application.yml

server:
  port: 8786

spring:
  application:
    name: eureka-hystrix-dashboard-another

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

2.4.4 bootstrap.yml

management:
  endpoints:
    web:
      exposure:
        include: '*'

2.4.5 EurekaHystrixDashboardAnotherApplication

package org.oscar.scd.eureka.hystrix.dashboard.another;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Value;
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.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@EnableHystrix
@RestController
@EnableEurekaClient
@EnableCircuitBreaker
@EnableDiscoveryClient
@SpringBootApplication
@EnableHystrixDashboard
public class EurekaHystrixDashboardAnotherApplication {

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

    @Value("${spring.application.name}")
    private String appName;

    @RequestMapping("/appName")
    @HystrixCommand(fallbackMethod = "errorMsg")
    public String getAppName() {
        return this.appName;
    }

    @SuppressWarnings("unused")
    public String errorMsg() {
        return "Error msg by hystrix.";
    }
}

2.4 eureka-hystrix-dashboard-turbine

2.4.1 整體實現

  1. pom.xml：引入相關依賴，具體查看下方具體代碼
  2. application.yml：指定端口，應用名，註冊中心訪問地址信息
  3. EurekaHystrixDashboardTurbineApplication：Spring boot啓動類，使用註解開啓Hystrix Turbine監控

2.4.2 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-cloud-finchley-demo</artifactId>
        <groupId>org.oscar.scd</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>eureka-hystrix-dashboard-turbine</artifactId>

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

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

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-hystrix-dashboard -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
            <version>1.4.5.RELEASE</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-hystrix -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
            <version>1.4.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-turbine</artifactId>
        </dependency>
    </dependencies>
</project>

2.4.3 application.yml

server:
  port: 8787
spring:
  application:
    name: eureka-hystrix-dashboard-turbine
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

management:
  endpoints:
    web:
      exposure:
        include: "*"
      cors:
        allowed-origins: "*"
        allowed-methods: "*"

turbine:
  app-config: eureka-hystrix-dashboard-another,eureka-hystrix-dashboard
  aggregator:
    clusterConfig: default
  clusterNameExpression: new String("default")
  combine-host: true
  instanceUrlSuffix:
    default: actuator/hystrix.stream

2.4.4 EurekaHystrixDashboardApplication

package org.oscar.scd.eureka.hystrix.dashboard.turbine;

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.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.cloud.netflix.turbine.EnableTurbine;
import org.springframework.web.bind.annotation.RestController;

@EnableHystrix
@EnableTurbine
@RestController
@EnableEurekaClient
@EnableCircuitBreaker
@EnableDiscoveryClient
@SpringBootApplication
@EnableHystrixDashboard
public class EurekaHystrixDashboardTurbineApplication {

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

}

3. 驗證

3.1 創建SpringBoot啓動類

最簡單的方式添加一個SpringBoot啓動類型的啓動類就行，如果對SpringBoot有所瞭解或者看過前面系列的文章，這裏很簡單。

3.1.1 EurekaServerSingletonApplication

略

3.1.2 EurekaHystrixDashboardApplication

略

3.1.2 EurekaHystrixDashboardAnotherApplication

略

3.1.2 EurekaHystrixDashboardTurbineApplication

略

3.2 啓動

  1. EurekaServerSingletonApplication
  2. EurekaHystrixDashboardApplication
  3. EurekaHystrixDashboardAnotherApplication
  4. EurekaHystrixDashboardTurbineApplication

3.3 查看Hystrix Dashboard

  1. 訪問：http://localhost:8785/hystrix
    在這裏插入圖片描述

  2. 訪問：http://localhost:8785/appName調用服務

eureka-hystrix-dashboard

  1. 訪問：http://localhost:8786/appName調用服務

eureka-hystrix-dashboard-another

  1. 訪問：http://localhost:8787/turbine.stream 查看Turbine聚合的監控信息
  2. 訪問http://localhost:8787/hystrixHystrix界面前兩個輸入框依次輸入：http://localhost:8787/turbine.stream、2000。注意是8787端口的turbine.stream，如果沒有數據，多調用幾次服務端口
    在這裏插入圖片描述

4. 思考

  • 如何與調用鏈監控整合，也就是如何搭建一個完整的監控平臺
  • 現在這個要輸入查詢條件，如何定製化首界面和展示項，更接近於實用和生產
  • 監控項或者監控信息是否可定製化，Spring Boot的actuator如何使用的，具體有哪些endpoint。

5. 補充

5.1 資料

九：對微服務限流容錯的理解

十一：對微服務調用鏈監控的理解

十：對微服務監控系統分層和監控架構的理解

https://github.com/Netflix/hystrix

http://cloud.spring.io/spring-cloud-static/Finchley.SR1/multi/multi_spring-cloud-consul-turbine.html

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