Re: [I] bug: grpc-transcode cant transcode empty array list to [] , but it did to {} [apisix]

[via GitHub]

3kis commented on issue #11440:
URL: https://github.com/apache/apisix/issues/11440#issuecomment-2988194977

   it seems that this problem was solved in latest apisix.
   
   # proto file:
   ```proto
   syntax = "proto3";
   
   package user;
   
   option go_package = "grpc-test/proto";
   
   enum Gender {
     GENDER_UNSPECIFIED = 0;
     GENDER_MALE = 1;
     GENDER_FEMALE = 2;
   }
   
   message UserRequest {
     string name = 1;
     int32 age = 2;
   }
   
   
   message UserResponse {
     Gender gender = 1;
     repeated string items = 2;
     string message = 3;
   }
   
   
   service UserService {
     rpc GetUserInfo(UserRequest) returns (UserResponse) {}
   } 
   ```
   
   
   
   # grpc server code
   
   ## array containing values
   
   ```golang
   package main
   
   import (
        "context"
        "fmt"
        "log"
        "net"
   
        "google.golang.org/grpc"
   
        "grpc-test/proto"
   )
   
   type UserServiceServer struct {
        proto.UnimplementedUserServiceServer
   }
   
   
   func (s *UserServiceServer) GetUserInfo(ctx context.Context, req 
*proto.UserRequest) (*proto.UserResponse, error) {
        return &proto.UserResponse{
                Gender: proto.Gender_GENDER_MALE,
                Items:  []string{"1", "2"},
                Message: "Hello world, name: " + req.Name + ", age: " +  
fmt.Sprint(req.Age),
        }, nil
   }
   
   func main() {
        listener, err := net.Listen("tcp", ":50051")
        if err != nil {
                log.Fatalf("failed to listen: %v", err)
        }
        grpcServer := grpc.NewServer()
        proto.RegisterUserServiceServer(grpcServer, &UserServiceServer{})
        log.Println("gRPC server listening on :50051")
        if err := grpcServer.Serve(listener); err != nil {
                log.Fatalf("failed to serve: %v", err)
        }
   } 
   ```
   
   
   
   request result
   ![image.png](attachment:1108390d-3645-4227-a8d7-10b275bc42fb:image.png)
   
   
   ## array without values
   ```golang
   package main
   
   import (
        "context"
        "fmt"
        "log"
        "net"
   
        "google.golang.org/grpc"
   
        "grpc-test/proto"
   )
   
   // UserServiceServer 实现 proto 生成的接口
   type UserServiceServer struct {
        proto.UnimplementedUserServiceServer
   }
   
   // GetUserInfo 实现接口
   func (s *UserServiceServer) GetUserInfo(ctx context.Context, req 
*proto.UserRequest) (*proto.UserResponse, error) {
        return &proto.UserResponse{
                Gender: proto.Gender_GENDER_MALE,
                Items:  []string{},
                Message: "Hello world, name: " + req.Name + ", age: " +  
fmt.Sprint(req.Age),
        }, nil
   }
   
   func main() {
        listener, err := net.Listen("tcp", ":50051")
        if err != nil {
                log.Fatalf("failed to listen: %v", err)
        }
        grpcServer := grpc.NewServer()
        proto.RegisterUserServiceServer(grpcServer, &UserServiceServer{})
        log.Println("gRPC server listening on :50051")
        if err := grpcServer.Serve(listener); err != nil {
                log.Fatalf("failed to serve: %v", err)
        }
   } 
   ```
   
   request result
   ![image.png](attachment:10cfc0bd-1dbf-4b47-ba7a-9eb450151257:image.png)
   
   


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