gRPC

安装Protocol Buffer 并生成代码

下载安装 protobuf

$ brew install protobuf
$ protoc --version  # Ensure compiler version is 3+

安装 go 插件

$ go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
$ go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
export PATH="$PATH:$(go env GOPATH)/bin"
protoc-gen-go --version
protoc-gen-go-grpc --version

生成代码

syntax = "proto3";

package hello.v1;

option go_package = "grpc-module1/proto";

message Person {
  string name =1;
}

protoc --go_out=. --go_opt=paths=source_relative proto/hello.proto
go mod tidy       
go mod vendor

生成包含服务的代码

syntax = "proto3";

package hello;

option go_package="grpc-module2/proto";

service HelloService {
  rpc SayHello(SayHelloRequest) returns (SayHelloResponse);
}

message SayHelloRequest {
  string name = 1;
}

message SayHelloResponse {
  string message =1;
}

protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative hello.proto
go mod tidy       
go mod vendor

命令行访问服务器

grpcurl -d '{"name":"Chris"}' \
-import-path ./proto -proto hello.proto \
-plaintext localhost:50051 \
hello.HelloService/SayHello