04.实现TripServiceServer服务端

1. 新建一个go文件

//定义个struct
type Server struct {
  tripPb.UnimplementedTripServiceServer //***注意***由于版本问题，这儿需要使用trip_grpc.pb.go里面的struct
}
//实现GetTrip接口
func (s *Server) GetTrip(ctx context.Context, request *tripPb.GetTripRequest) (*tripPb.GetTripResponse, error) {
  return &tripPb.GetTripResponse{
      Id:   request.Id,
      Trip: &tripPb.Trip{
          Start:         "",
          End:           "",
          DurationSec:   0,
          FeeCent:       0,
          StartPos:      nil,
          EndPos:        nil,
          PathLocations: nil,
          Status:       3,
      },
  },nil
}
//该代码只是用来判断服务是否都实现
var _ tripPb.TripServiceServer = &Server{}