每天20分钟之基于grp+consul实现简单微服务

基于grp consul实现简单微服务

1 构建consul

consul 本机运行 /usr/local/bin/consul agent -dev -ui=true -client 0.0.0.0 &

http://127.0.0.1:8500/ui/dc1/services

定义proto

代码语言：txt复制

syntax = "proto3";

option java_package = "cn.beckbi.pb";
option java_outer_classname = "AdInfo";



message Ad {
  int32 id = 1;
  string name = 2;
  string description = 3;
  float price = 4;
}

message AdId {
  int32 id = 1;
}

service AdRpc {
  rpc addAd(Ad) returns (AdId);
  rpc getAd(AdId) returns (Ad);
}

2 运行server

代码语言：txt复制

    <dependencies>
        <dependency>
            <groupId>cn.beckbi</groupId>
            <artifactId>kgrpc-springboot-lib</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-discovery</artifactId>
        </dependency>

        <dependency>
            <groupId>net.devh</groupId>
            <artifactId>grpc-server-spring-boot-starter</artifactId>
        </dependency>
    </dependencies>

server代码

代码语言：txt复制

package cn.beckbi.service;

import cn.beckbi.pb.AdInfo;
import cn.beckbi.pb.AdRpcGrpc;
import io.grpc.Status;
import io.grpc.StatusException;
import net.devh.boot.grpc.server.service.GrpcService;

import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import java.util.logging.Logger;

/**
 * @program: kgrpc
 * @description:
 * @author: bikang
 * @create: 2022-09-20 23:02
 */
@GrpcService
public class AdServiceImpl extends AdRpcGrpc.AdRpcImplBase  {

    private static final Logger logger = Logger.getLogger(AdServiceImpl.class.getName());

    private final Random random = new Random();

    private final Map<Integer, AdInfo.Ad> adInfoMap = new HashMap<>(50);

    @Override
    public void addAd(cn.beckbi.pb.AdInfo.Ad request,
                      io.grpc.stub.StreamObserver<cn.beckbi.pb.AdInfo.AdId> responseObserver) {
        int id = random.nextInt(100000000);



        logger.info("id:" id);

        request = request.toBuilder().setId(id).build();
        adInfoMap.put(id, request);
        AdInfo.AdId adId = AdInfo.AdId.newBuilder().setId(id).build();
        responseObserver.onNext(adId);
        responseObserver.onCompleted();
    }

    @Override
    public void getAd(cn.beckbi.pb.AdInfo.AdId request,
                      io.grpc.stub.StreamObserver<cn.beckbi.pb.AdInfo.Ad> responseObserver) {
        int id = request.getId();

        logger.info("id:" id);

        if (adInfoMap.containsKey(id)) {
            responseObserver.onNext((AdInfo.Ad) adInfoMap.get(id));
            responseObserver.onCompleted();
        }else {
            responseObserver.onError(new StatusException(Status.NOT_FOUND));
        }

    }
}

3 运行client

代码语言：txt复制

   <dependencies>
        <dependency>
            <groupId>cn.beckbi</groupId>
            <artifactId>kgrpc-springboot-lib</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>net.devh</groupId>
            <artifactId>grpc-client-spring-boot-starter</artifactId>
        </dependency>
    </dependencies>

client代码

代码语言：txt复制

@Slf4j
@Service
public class GrpcClientService {

    @GrpcClient("kgrpc-server-producer")
    private Channel serverChannel;

    public AdInfo.Ad  createAd(String name) {
        AdRpcGrpc.AdRpcBlockingStub stub = AdRpcGrpc.newBlockingStub(serverChannel);
        AdInfo.AdId adId = stub.addAd(AdInfo.Ad.newBuilder()
                .setName("cpl1")
                .setDescription(name)
                .setPrice(31.21f)
                .build());
        log.info("set ad "  adId.getId() " add success !");
        AdInfo.Ad ad = stub.getAd(adId);
        log.info("Ad: "   ad.toString());
        return ad;
    }
}

附录

代码路径: https://github.com/beckbikang/kgrpc/tree/main/kgrpc-springboot

httpgrpc 微服务 java consul

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