Spring Boot 集成 GRPC

时间:2023-03-09 04:37:22
Spring Boot 集成 GRPC

代码地址如下:
http://www.demodashi.com/demo/14110.html

一.背景

Spring Boot是由Pivotal团队提供的全新框架,其设计目的是用来简化新Spring应用的初始搭建以及开发过程。该框架使用了特定的方式来进行配置,从而使开发人员不再需要定义样板化的配置。通过这种方式,Spring Boot致力于在蓬勃发展的快速应用开发领域(rapid application development)成为领导者。

Grpc 由 google 开发,是一款语言中立、平台中立、开源的远程过程调用(RPC)系统。

​ 项目定位是电商平台和WMS系统中间的插件服务,wms采用.net语言开发,电商平台采用java开发,所以出现了多语言间的数据交换,开始考虑使用json协议,方便快捷,但是考虑到效率和系统发展的问题,考虑使用RPC框架,斟酌之后敲定为GRPC。

​ 但是,我们拓展服务使用的SpringBoot,Grpc和SpringBoot集成的文章不是很多,大部分都是采用github上***-springboot.grpc.starter的项目,看了一下,并不是很感兴趣,所以自己根据官网的demo,尝试与SpringBoot集成,所以在这和大家分享下

二. 准备工作

开发环境

Spring Boot 2.0.5.RELEASE

Grpc 1.15.0

Inteliji Idea 2018.3

项目截图

Spring Boot 集成 GRPC

三.实现过程

1. 配置SpringBoot项目
  • Pom文件增加
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
</dependencies>
  • 编写启动类
public static void main(String[] args) {
// 启动SpringBoot web
SpringApplication.run(Launcher.class, args);
}
2. 增加GRPC支持和GRPC代码生成工具,集成GrpcServer端
  • 增加POM文件
<dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-netty-shaded</artifactId>
<version>1.15.0</version>
</dependency>
<dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-protobuf</artifactId>
<version>1.15.0</version>
</dependency>
<dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-stub</artifactId>
<version>1.15.0</version>
</dependency>
  • 增加maven工具
<build>
<extensions>
<extension>
<groupId>kr.motd.maven</groupId>
<artifactId>os-maven-plugin</artifactId>
<version>1.5.0.Final</version>
</extension>
</extensions>
<plugins>
<plugin>
<groupId>org.xolstice.maven.plugins</groupId>
<artifactId>protobuf-maven-plugin</artifactId>
<version>0.5.1</version>
<configuration>
<protocArtifact>com.google.protobuf:protoc:3.5.1-1:exe:${os.detected.classifier}</protocArtifact>
<pluginId>grpc-java</pluginId>
<pluginArtifact>io.grpc:protoc-gen-grpc-java:1.15.0:exe:${os.detected.classifier}</pluginArtifact>
</configuration>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>compile-custom</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
  • 编写Server端实现类

public class HelloWorldService extends HelloWorldServiceGrpc.HelloWorldServiceImplBase { @Override
public void welcome(HelloWorld.NameRequest request, StreamObserver<HelloWorld.EchoResponse> responseObserver) {
HelloWorld.EchoResponseOrBuilder echoResponseOrBuilder = HelloWorld.EchoResponse.newBuilder();
((HelloWorld.EchoResponse.Builder) echoResponseOrBuilder).setMergename("welcome " + request.getName());
responseObserver.onNext(((HelloWorld.EchoResponse.Builder) echoResponseOrBuilder).build());
responseObserver.onCompleted();
}
}
  • 增加Grpc启动器
@Component("grpcLauncher")
public class GrpcLauncher { private Logger logger = LoggerFactory.getLogger(Launcher.class); /**
* 定义Grpc Server
*/
private Server server; @Value("${grpc.server.port}")
private Integer grpcServerPort;
/**
* GRPC 服务启动方法
* @param grpcServiceBeanMap
*/
public void grpcStart(Map<String, Object> grpcServiceBeanMap) {
try{
ServerBuilder serverBuilder = ServerBuilder.forPort(grpcServerPort);
for (Object bean : grpcServiceBeanMap.values()){
serverBuilder.addService((BindableService) bean);
logger.info(bean.getClass().getSimpleName() + " is regist in Spring Boot");
}
server = serverBuilder.build().start();
logger.info("grpc server is started at " + grpcServerPort);
server.awaitTermination();
Runtime.getRuntime().addShutdownHook(new Thread(()->{grpcStop();}));
} catch (IOException e){
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
} /**
* GRPC 服务Stop方法
*/
private void grpcStop(){
if (server != null){
server.shutdownNow();
}
}
}
  • 添加自定义注解用于扫描Grpc服务
/**
* 自定义注解,用于获取Spring扫描到的类
*/
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Component
public @interface GrpcService {
}
  • 在SpringBoot中增加Grpc启动器,并将Spring管理的类,添加到Grpc服务中
/**
* Spring Boot 启动器
*/
@SpringBootApplication
public class Launcher { public static void main(String[] args) {
// 启动SpringBoot web
ConfigurableApplicationContext configurableApplicationContext = SpringApplication.run(Launcher.class, args);
Map<String, Object> grpcServiceBeanMap = configurableApplicationContext.getBeansWithAnnotation(GrpcService.class);
GrpcLauncher grpcLauncher = configurableApplicationContext.getBean("grpcLauncher",GrpcLauncher.class);
grpcLauncher.grpcStart(grpcServiceBeanMap);
}
}

至此Server端,集成完毕

Spring Boot 集成 GRPC

3. 增加Client端
  • 获取Chanel

@Component
public class GrpcClientMananer {
@Value("${grpc.client.host}")
private String host;
@Value("${grpc.client.port}")
private Integer port; public ManagedChannel getChannel(){
ManagedChannel channel = ManagedChannelBuilder.forAddress(host,port)
.disableRetry()
.idleTimeout(2, TimeUnit.SECONDS)
.build();
return channel;
}
}
  • 调用方式
@Component
public class HelloWorldClient { @Autowired
private GrpcClientMananer grpcClientMananer; public void call(){
ManagedChannel channel = grpcClientMananer.getChannel();
HelloWorld.NameRequestOrBuilder nameRequestOrBuilder = HelloWorld.NameRequest.newBuilder();
((HelloWorld.NameRequest.Builder) nameRequestOrBuilder).setName("Geek");
HelloWorldServiceGrpc.HelloWorldServiceBlockingStub stub = HelloWorldServiceGrpc.newBlockingStub(channel);
HelloWorld.EchoResponse echoResponse = stub.welcome(((HelloWorld.NameRequest.Builder) nameRequestOrBuilder).build());
System.out.println(echoResponse.getMergename());
} }

四.其他补充

暂没

Spring Boot 集成 GRPC

代码地址如下:
http://www.demodashi.com/demo/14110.html

注:本文著作权归作者,由demo大师代发,拒绝转载,转载需要作者授权