我正在研究一个tutorial https://ewanvalentine.io/microservices-in-golang-part-1/关于 gRPC。当我生成.pb.go
文件,我得到一些XXX_*
输入我的结构。
这是我的consignment.proto
file:
syntax = "proto3";
package go.micro.srv.consignment;
service ShippingService {
rpc CreateConsignment(Consignment) returns (Response) {}
}
message Consignment {
string id = 1;
string description = 2;
int32 weight = 3;
repeated Container containers = 4;
string vessel_id = 5;
}
message Container {
string id = 1;
string customer_id = 2;
string origin = 3;
string user_id = 4;
}
message Response {
bool created = 1;
Consignment consignment = 2;
}
这是结构体中的.pb.go
文件。谁能告诉我为什么有3个XXX
类型在我的struct
?该结构不应该反映我在我的定义中定义的内容吗?proto
?
type Consignment struct {
Id string `protobuf:"bytes,1,opt,name=id" json:"id,omitempty"`
Description string `protobuf:"bytes,2,opt,name=description" json:"description,omitempty"`
Weight int32 `protobuf:"varint,3,opt,name=weight" json:"weight,omitempty"`
Containers []*Container `protobuf:"bytes,4,rep,name=containers" json:"containers,omitempty"`
VesselId string `protobuf:"bytes,5,opt,name=vessel_id,json=vesselId" json:"vessel_id,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}