Spring Cloud Netflix入门（Sidecar）

SideCar主要是用于将非JVM语言的服务，代理为Netflix服务

1、SideCarApp

package com.neohope.springcloud.test;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.netflix.sidecar.EnableSidecar;
import org.springframework.web.bind.annotation.RequestMapping;

//作用一、注册到eureka并提供服务健康状态
//其他语言的服务，首先服务封装为REST或JSON通信，并提供一个health路径，反馈服务是否正常
//sidecar会将这个服务注册到eureka
//其他服务，可以通过eureka查询并调用该服务

//作用二、从sidecar获取服务地址，并调用
//访问sidecar，获取服务地址  http://localhost:port/hosts/{serviceId}.
//分析返回结果，得到服务地址
//调用需要的服务
@EnableSidecar
public class SideCarApp 
{
	@Value("${spring.application.name}")
	private String appName;
	
	@RequestMapping("/appName")
	public String appName() {
		return appName;
	}
	
	@RequestMapping("/")
	public String hello() {
		return "It works";
	}
	
    public static void main( String[] args )
    {
    	new SpringApplicationBuilder(SideCarApp.class).web(true).run(args);
    }
}

2、pom.xml

<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>

	<parent>
		<groupId>org.springframework.cloud.stream.app</groupId>
		<artifactId>app-starters-build</artifactId>
		<version>1.1.3.M1</version>
	</parent>

	<groupId>com.neohope.springcloud.test</groupId>
	<artifactId>netflix-sidecar-test</artifactId>
	<version>1.0.0</version>
	<packaging>jar</packaging>

	<name>netflix-sidecar-test</name>
	<url>http://maven.apache.org</url>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>4.3.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>4.3.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-netflix-sidecar</artifactId>
			<version>1.3.0.M1</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot</artifactId>
			<version>1.5.1.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-autoconfigure</artifactId>
			<version>1.5.1.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<repositories>
		<repository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/libs-milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>
</project>

3、application.properties

spring.application.name=zuul-gateway-app
server.port=7001
security.user.name=user
security.user.password=hystrix

eureka.client.serviceUrl.defaultZone=http://user:hystrix@localhost:7000/eureka/
eureka.client.preferSameZoneEureka=true
eureka.client.healthcheck.enabled=true
eureka.instance.metadataMap.zone = zone1
eureka.instance.statusPageUrlPath=${management.context-path}/info
eureka.instance.healthCheckUrlPath=${management.context-path}/health
eureka.instance.lease-renewal-interval-in-seconds=5
eureka.instance.lease-expiration-duration-in-seconds=10

sidecar.port=9999
sidecar.health-uri=http://localhost:9999/health.json