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Apache ShenYu Demo

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shenyu-demo

Apache ShenYu Demo 前言 Apache ShenYu（神禹）是采用Java WebFlux编写的响应式API网关，具有异步、高性能、跨语言的特点。

支持HTTP、Dubbo、 Spring Cloud、 gRPC、 Motan、 Sofa、 Tars 等协议 采用插件化设计**，插件热插拔，易扩展 灵活的流量筛选，能满足各种流量控制 内置鉴权、限流、熔断、防火墙等插件 流量配置动态化，性能极高 支持集群部署，支持A/B测试、蓝绿发布 架构图 image.png

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快速部署 Apache Shenyu 支持本地部署、单机快速部署、二进制包部署、Docker部署、K8s部署、集群部署等，为了能够快速体验，我们使用本地部署，同时也为了方便后期看源码。

环境准备 本地正确安装JDK1.8+ 本地正确安装Git 本地正确安装Maven 选择一款开发工具，比如IDEA 下载编译代码 从https://github.com/apache/shenyu.git下载最新仓库，下载完成后使用mvn clean install -Dmaven.javadoc.skip=true -B -Drat.skip=true -Djacoco.skip=true -DskipITs -DskipTests编译打包一下。 导入IDEA，切换分支到最小的release版本，我这目前为2.5.0-release 使用开发工具启动 org.apache.shenyu.admin.ShenyuAdminBootstrap，访问 http://localhost:9095 ， 默认用户名和密码分别为: admin 和 123456（默认使用H2数据库），这是Shenyu运维管理后台。 使用开发工具启动org.apache.shenyu.bootstrap.ShenyuBootstrapApplication，这就相当于微服务网关 如下是管理后台截图：

image.png

官网的git地址有误：https://github.com/apache/incubator-shenyu.git

微服务集成 前期准备：nacos服务，搭建步骤看nacos官网 版本关系：

<shenyu.version>2.4.3</shenyu.version> <boot.version>2.2.2.RELEASE</boot.version> <cloud.version>Hoxton.SR8</cloud.version> <nacos.version>2.2.6.RELEASE</nacos.version> 版本管理（统一加到父级pom中）：

org.springframework.boot spring-boot-dependencies ${boot.version} pom import 
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>${cloud.version}</version>
        <type>pom</type>
        <scope>import</scope>
    </dependency>
</dependencies>
创建网关 创建网关服务shenyu-gateway,依赖的pom.xml如下 org.springframework.boot spring-boot-starter-webflux org.springframework.boot spring-boot-starter-actuator org.apache.shenyu shenyu-spring-boot-starter-gateway ${shenyu.version} org.apache.shenyu shenyu-spring-boot-starter-plugin-springcloud ${shenyu.version} org.springframework.cloud spring-cloud-commons 2.2.5.RELEASE org.apache.shenyu shenyu-spring-boot-starter-plugin-httpclient ${shenyu.version} org.apache.shenyu shenyu-spring-boot-starter-instance ${shenyu.version} com.alibaba.cloud spring-cloud-starter-alibaba-nacos-discovery ${nacos.version} org.apache.shenyu shenyu-spring-boot-starter-sync-data-nacos ${shenyu.version} application.yml配置如下： server: port: 7000

spring: cloud: nacos: server-addr: 127.0.0.1:8848 discovery: enabled: true main: allow-bean-definition-overriding: true allow-circular-references: true codec: max-in-memory-size: 2MB application: name: shenyu-gateway

shenyu: sync: nacos: url: ${spring.cloud.nacos.server-addr} # url: 配置成你的 nacos地址，集群环境请使用（,）分隔。 namespace: sync-data

GatewayApplication代码 @EnableDiscoveryClient @SpringBootApplication public class GatewayApplication {

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

} 通常如上三步，已经集成了shenyu-gateway服务。 启动完成日志，可以清楚的看到Shenyu的Logo：

2022-08-26 00:42:11.706 INFO 2300 --- [ main] org.apache.shenyu.web.logo.ShenyuLogo :

/ | |
| ( | |_ ___ _ __ _ _ _ _ ___ | '_ \ / _ \ '_ | | | | | | | ) | | | | __/ | | | || | || | |_____/|| ||___|| ||_, |_,| / |
|/
:: Shenyu :: (v2.4.3)

. ____ _ __ _ _ /\ / ' __ _ () __ __ _ \ \ \
( ( )__ | '_ | '| | ' / ` | \ \ \
\/ )| |)| | | | | || (| | ) ) ) ) ' || .__|| ||| |_, | / / / / =========||==============|/=//// :: Spring Boot :: (v2.2.2.RELEASE)

2022-08-26 00:42:13.111 INFO 2300 --- [ main] c.s.demo.gateway.GatewayApplication : No active profile set, falling back to default profiles: default ...省略 2022-08-26 00:42:21.644 INFO 2300 --- [ main] o.s.b.web.embedded.netty.NettyWebServer : Netty started on port(s): 7000 2022-08-26 00:42:22.363 INFO 2300 --- [ main] c.a.c.n.registry.NacosServiceRegistry : nacos registry, DEFAULT_GROUP shenyu-gateway 192.168.0.115:7000 register finished 2022-08-26 00:42:23.104 INFO 2300 --- [ main] c.s.demo.gateway.GatewayApplication : Started GatewayApplication in 12.584 seconds (JVM running for 13.613) 💡 配置依赖的坑，已经给你踩好了，务必按照如上配置

移植ShenYu管理后台 从Apache ShenYu源码复制一份 修改application.yml的注册地址和同步地址，完整配置如下

server: port: 9095 address: 0.0.0.0

spring: profiles: active: h2 thymeleaf: cache: true encoding: utf-8 enabled: true prefix: classpath:/static/ suffix: .html

mybatis: config-location: classpath:/mybatis/mybatis-config.xml mapper-locations: classpath:/mappers/*.xml

shenyu: register: registerType: nacos #http #zookeeper #etcd #nacos #consul serverLists: 127.0.0.1:8848 #localhost:2181 #http://localhost:2379 localhost:8848 props: sessionTimeout: 5000 connectionTimeout: 2000 checked: true zombieCheckTimes: 5 scheduledTime: 10 nacosNameSpace: ShenyuRegisterCenter sync:

websocket:

enabled: true

messageMaxSize: 10240

zookeeper:

url: localhost:2181

sessionTimeout: 5000

connectionTimeout: 2000

http:

enabled: true

  nacos:
    url: 127.0.0.1:8848
    namespace: sync-data

username:

password:

acm:

enabled: false

endpoint: acm.aliyun.com

namespace:

accessKey:

secretKey:

etcd:

url: http://localhost:2379

consul:

url: http://localhost:8500

ldap: enabled: false url: ldap://xxxx:xxx bind-dn: cn=xxx,dc=xxx,dc=xxx password: xxxx base-dn: ou=xxx,dc=xxx,dc=xxx object-class: person login-field: cn jwt: expired-seconds: 86400000 shiro: white-list: - / - /favicon.* - /static/** - /index** - /platform/login - /websocket - /error - /actuator/health - /swagger-ui.html - /webjars/** - /swagger-resources/** - /v2/api-docs - /csrf swagger: enable: true

logging: level: root: info org.springframework.boot: info org.apache.ibatis: info org.apache.shenyu.bonuspoint: info org.apache.shenyu.lottery: info org.apache.shenyu: info

💡 ShenYu的管理后台不需要做什么修改，只要调整配置即可

创建服务 为了测试效果，我们创建一个server1的服务，一会在Docker中多实例部署

pom.xml依赖 org.springframework.boot spring-boot-starter-web 

<dependency>
    <groupId>org.apache.shenyu</groupId>
    <artifactId>shenyu-spring-boot-starter-client-springcloud</artifactId>
    <version>${shenyu.version}</version>
</dependency>

<!--nacos-->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <version>${nacos.version}</version>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-commons</artifactId>
    <version>2.2.5.RELEASE</version>
</dependency>
application.yml配置 server: port: 8080

spring: cloud: nacos: server-addr: 127.0.0.1:8848 discovery: enabled: true main: #允许覆盖bean allow-bean-definition-overriding: true codec: #编码器缓存限制 max-in-memory-size: 2MB application: name: server1

shenyu: register: registerType: nacos #zookeeper #etcd #nacos #consul serverLists: ${spring.cloud.nacos.server-addr} #localhost:2181 #http://localhost:2379 #localhost:8848 props: nacosNameSpace: ShenyuRegisterCenter client: springCloud: props: contextPath: /server1

创建一个测试接口 @RestController public class HelloController {

@PostMapping("/hello")
public String hello() {
    log.info("ip:{}", InetAddress.getLocalHost().getHostAddress());
    return "Server1 Hello ShenYu";
}

} Docker配置

指定 java 环境镜像

FROM java:8

复制文件到容器

COPY target/*.jar /application.jar

RUN /bin/cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo 'Asia/Shanghai' > /etc/timezone

ENTRYPOINT ["java", "-jar", "-Xms256m", "-Xmx256m", "/application.jar"]

体验 1.分别启动shenyu-gateway、shenyu-admin、docker部署两个server1实例 image.png

配置路由测试 image.png

配置意思是：当请求头server=server1时，会请求到172.17.0.4 这个服务上 同理配置server2

image.png 配置rule，ruel的规则我们配置为都通过，使用or

image.png 使用Postman请求网关地址http://localhost:7000/hello，成功返回了结果Server1 Hello ShenYu

image.png 同时shenyu-gateway打印了路由日志

INFO 1 --- [u-netty-epoll-3] o.a.s.plugin.base.AbstractShenyuPlugin : divide selector success match , selector name :server1 INFO 1 --- [u-netty-epoll-3] o.a.s.plugin.base.AbstractShenyuPlugin : divide rule success match , rule name :full rule INFO 1 --- [u-netty-epoll-3] o.a.s.p.h.AbstractHttpClientPlugin : The request urlPath is http://172.17.0.4:8080/hello, retryTimes is 3, retryStrategy is current

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Apache ShenYu Demo

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