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Apache ShenYu网关初体验
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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思想，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： 代码语言：javascript复制2.4.3 2.2.2.RELEASE Hoxton.SR8 2.2.6.RELEASE版本管理（统一加到父级pom中）： 代码语言：javascript复制 org.springframework.boot spring-boot-dependencies ${boot.version} pom import org.springframework.cloud spring-cloud-dependencies ${cloud.version} pom import 创建网关创建网关服务shenyu-gateway,依赖的pom.xml如下代码语言：javascript复制 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：代码语言：javascript复制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-dataGatewayApplication代码代码语言：javascript复制@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： 代码语言：javascript复制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，完整配置如下代码语言：javascript复制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依赖代码语言：javascript复制 org.springframework.boot spring-boot-starter-web org.apache.shenyu shenyu-spring-boot-starter-client-springcloud ${shenyu.version} com.alibaba.cloud spring-cloud-starter-alibaba-nacos-discovery ${nacos.version} org.springframework.cloud spring-cloud-commons 2.2.5.RELEASE application.yml配置代码语言：javascript复制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创建一个测试接口代码语言：javascript复制@RestController public class HelloController { @PostMapping("/hello") public String hello() { log.info("ip:{}", InetAddress.getLocalHost().getHostAddress()); return "Server1 Hello ShenYu"; } }Docker配置代码语言：javascript复制# 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](http://localhost:63193/hello)，成功返回了结果Server1 Hello ShenYu  image.png同时shenyu-gateway打印了路由日志 代码语言：javascript复制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 currentApache ShenYu体验完毕，后面将继续推出选择器、规则相关文章，敬请期待。 💡 项目源码地址：https://github.com/jujunchen/shenyu-demo.git |
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