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SpringCloud(五):Turbine集群监控

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源码地址：https://github.com/IsResultXaL/springcloud

通过上一节内容介绍与实践，我们已经搭建起微服务架构中的核心组件

服务注册中心
服务提供者
服务消费者
断路器Hystrix
Hystrix仪表板

SpringCloud(四):Hystrix仪表板

以下Model基于上一节项目新增

###Turbine集群监控

在上一篇博客介绍Hystrix Bashbord的首页时，我们提到过除了可以开启单个实例的监控页面之外，还有针对集群使用的监控端点/turbine.stream。通过引入Turbine来汇集监控信息，并将聚合好的信息提供给Hystrix Bashbord来集中展示和监控。

创建一个model项目(turbine)

turbine项目的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">
  	<modelVersion>4.0.0</modelVersion>

  	<groupId>com.caogen</groupId>
  	<artifactId>turbine</artifactId>
  	<version>0.0.1-SNAPSHOT</version>
  	<packaging>jar</packaging>

  	<name>turbine</name>
  	<description>Demo project for Spring Boot</description>

  	<parent>
  		<groupId>org.springframework.boot</groupId>
  		<artifactId>spring-boot-starter-parent</artifactId>
  		<version>1.5.8.RELEASE</version>
  		<relativePath/> <!-- lookup parent from repository -->
  	</parent>

  	<properties>
  		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  		<java.version>1.8</java.version>
  		<spring-cloud.version>Edgware.RELEASE</spring-cloud.version>
  	</properties>

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

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

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

  	<dependencyManagement>
  		<dependencies>
  			<dependency>
  				<groupId>org.springframework.cloud</groupId>
  				<artifactId>spring-cloud-dependencies</artifactId>
  				<version>${spring-cloud.version}</version>
  				<type>pom</type>
  				<scope>import</scope>
  			</dependency>
  		</dependencies>
  	</dependencyManagement>

  	<build>
  		<plugins>
  			<plugin>
  				<groupId>org.springframework.boot</groupId>
  				<artifactId>spring-boot-maven-plugin</artifactId>
  			</plugin>
  		</plugins>
  	</build>

  </project>

在应用主类加上@EnableTurbine注解，启用Turbine功能。

import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;
  import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
  import org.springframework.cloud.netflix.turbine.EnableTurbine;

  @EnableTurbine		//开启Turbine
  @EnableDiscoveryClient
  @SpringBootApplication
  public class TurbineApplication {

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

配置application.yml加入Eureka和Turbine的相关配置

server:
    port: 8888

  # 服务应用名称
  spring:
    application:
  	name: turbine

  # 注册中心地址
  eureka:
    client:
  	serviceUrl:
  			  defaultZone: http://localhost:1111/eureka/

  turbine:
    app-config: ribbon-consumer   #收集监控信息的服务名
    combine-host-port: true
    cluster-name-expression: new String('default')    #集群名称

启动以下应用
- 服务注册中心 eureka-server 端口 1111
- 服务提供实例 eureka-client 端口 1112 和 1113
- 服务消费实例 ribbon-consumer 端口 1115 和 1116
- Hystrix仪表板 hystrix-dashboard 端口 8080
- Turbine集群 turbine 端口 8888