【发布时间】：2021-04-10 06:56:34
【问题描述】：
我是 Go 和 Protobufs 的新手，因此这可能是一个非常菜鸟的问题。很抱歉。
我的 go 项目中有几个包，我想创建一个单独的包，其中包含我所有的 .proto（也是 .pb.go）文件，然后我可以将这些 proto 文件导入任何其他包中，以更好地管理我的所有proto 文件。
但是当我将我的 proto 文件移动到一个名为“prototemps”的单独包中并将“prototemps”导入另一个名为“reader”的包中时。在 reader.go 中，我这样做：
sensorData := &prototemps.Sensor{}
err := proto.Unmarshal(msg.Payload(), sensorData)
它会产生这个错误
var sensorData *prototemps.Sensor
cannot use sensorData (variable of type *prototemps.Sensor) as protoreflect.ProtoMessage value in argument to proto.Unmarshal: missing method ProtoReflect
我的项目结构如下所示：
ProjectFolder/
/prototemps/<all .proto and .pb.go exist here> (Package "prototemps")
/reader/reader.go which fails when tries to do proto.Unmarshall (Package "reader")
这是我的 .proto 的样子
syntax="proto3";
package prototemps;
import "google/protobuf/timestamp.proto";
message sensor {
string Name = 1;
int32 ID = 2;
string Type = 3;
orientation Ori = 4;
IO IO = 5;
google.protobuf.Timestamp ts = 6;
}
message orientation {
int32 X = 1;
int32 Y = 2;
int32 Z = 3;
}
message IO {
int32 Reads = 1;
int32 Writes = 2;
}
这是我使用 *protoc --go_out= 生成的 .pb.go。 .proto
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: sensorData.proto
package prototemps
import (
fmt "fmt"
proto "github.com/golang/protobuf/proto"
timestamppb "google.golang.org/protobuf/types/known/timestamppb"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
type Sensor struct {
Name string `protobuf:"bytes,1,opt,name=Name,proto3" json:"Name,omitempty"`
ID int32 `protobuf:"varint,2,opt,name=ID,proto3" json:"ID,omitempty"`
Type string `protobuf:"bytes,3,opt,name=Type,proto3" json:"Type,omitempty"`
Ori *Orientation `protobuf:"bytes,4,opt,name=Ori,proto3" json:"Ori,omitempty"`
IO *IO `protobuf:"bytes,5,opt,name=IO,proto3" json:"IO,omitempty"`
Ts *timestamppb.Timestamp `protobuf:"bytes,6,opt,name=ts,proto3" json:"ts,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Sensor) Reset() { *m = Sensor{} }
func (m *Sensor) String() string { return proto.CompactTextString(m) }
func (*Sensor) ProtoMessage() {}
func (*Sensor) Descriptor() ([]byte, []int) {
return fileDescriptor_a3adf506f94bdd26, []int{0}
}
func (m *Sensor) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Sensor.Unmarshal(m, b)
}
func (m *Sensor) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Sensor.Marshal(b, m, deterministic)
}
func (m *Sensor) XXX_Merge(src proto.Message) {
xxx_messageInfo_Sensor.Merge(m, src)
}
func (m *Sensor) XXX_Size() int {
return xxx_messageInfo_Sensor.Size(m)
}
func (m *Sensor) XXX_DiscardUnknown() {
xxx_messageInfo_Sensor.DiscardUnknown(m)
}
var xxx_messageInfo_Sensor proto.InternalMessageInfo
func (m *Sensor) GetName() string {
if m != nil {
return m.Name
}
return ""
}
func (m *Sensor) GetID() int32 {
if m != nil {
return m.ID
}
return 0
}
func (m *Sensor) GetType() string {
if m != nil {
return m.Type
}
return ""
}
func (m *Sensor) GetOri() *Orientation {
if m != nil {
return m.Ori
}
return nil
}
func (m *Sensor) GetIO() *IO {
if m != nil {
return m.IO
}
return nil
}
func (m *Sensor) GetTs() *timestamppb.Timestamp {
if m != nil {
return m.Ts
}
return nil
}
type Orientation struct {
X int32 `protobuf:"varint,1,opt,name=X,proto3" json:"X,omitempty"`
Y int32 `protobuf:"varint,2,opt,name=Y,proto3" json:"Y,omitempty"`
Z int32 `protobuf:"varint,3,opt,name=Z,proto3" json:"Z,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Orientation) Reset() { *m = Orientation{} }
func (m *Orientation) String() string { return proto.CompactTextString(m) }
func (*Orientation) ProtoMessage() {}
func (*Orientation) Descriptor() ([]byte, []int) {
return fileDescriptor_a3adf506f94bdd26, []int{1}
}
func (m *Orientation) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Orientation.Unmarshal(m, b)
}
func (m *Orientation) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Orientation.Marshal(b, m, deterministic)
}
func (m *Orientation) XXX_Merge(src proto.Message) {
xxx_messageInfo_Orientation.Merge(m, src)
}
func (m *Orientation) XXX_Size() int {
return xxx_messageInfo_Orientation.Size(m)
}
func (m *Orientation) XXX_DiscardUnknown() {
xxx_messageInfo_Orientation.DiscardUnknown(m)
}
var xxx_messageInfo_Orientation proto.InternalMessageInfo
func (m *Orientation) GetX() int32 {
if m != nil {
return m.X
}
return 0
}
func (m *Orientation) GetY() int32 {
if m != nil {
return m.Y
}
return 0
}
func (m *Orientation) GetZ() int32 {
if m != nil {
return m.Z
}
return 0
}
type IO struct {
Reads int32 `protobuf:"varint,1,opt,name=Reads,proto3" json:"Reads,omitempty"`
Writes int32 `protobuf:"varint,2,opt,name=Writes,proto3" json:"Writes,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *IO) Reset() { *m = IO{} }
func (m *IO) String() string { return proto.CompactTextString(m) }
func (*IO) ProtoMessage() {}
func (*IO) Descriptor() ([]byte, []int) {
return fileDescriptor_a3adf506f94bdd26, []int{2}
}
func (m *IO) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_IO.Unmarshal(m, b)
}
func (m *IO) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_IO.Marshal(b, m, deterministic)
}
func (m *IO) XXX_Merge(src proto.Message) {
xxx_messageInfo_IO.Merge(m, src)
}
func (m *IO) XXX_Size() int {
return xxx_messageInfo_IO.Size(m)
}
func (m *IO) XXX_DiscardUnknown() {
xxx_messageInfo_IO.DiscardUnknown(m)
}
var xxx_messageInfo_IO proto.InternalMessageInfo
func (m *IO) GetReads() int32 {
if m != nil {
return m.Reads
}
return 0
}
func (m *IO) GetWrites() int32 {
if m != nil {
return m.Writes
}
return 0
}
func init() {
proto.RegisterType((*Sensor)(nil), "prototemps.sensor")
proto.RegisterType((*Orientation)(nil), "prototemps.orientation")
proto.RegisterType((*IO)(nil), "prototemps.IO")
}
func init() {
proto.RegisterFile("sensorData.proto", fileDescriptor_a3adf506f94bdd26)
}
var fileDescriptor_a3adf506f94bdd26 = []byte{
// 259 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x4c, 0x8e, 0xcf, 0x4a, 0xc3, 0x40,
0x10, 0xc6, 0xd9, 0xb4, 0x09, 0x38, 0x95, 0x22, 0x83, 0xe8, 0xd2, 0x83, 0x4a, 0x4e, 0xea, 0x61,
0x0b, 0xf5, 0xe0, 0x0b, 0xf4, 0xd2, 0x8b, 0x81, 0xa5, 0x60, 0xdb, 0xdb, 0x16, 0xd7, 0xb2, 0x60,
0xb2, 0x61, 0x77, 0x3c, 0xf8, 0x64, 0xbe, 0x9e, 0xfb, 0x27, 0xc5, 0x9c, 0x32, 0xdf, 0xe4, 0x37,
0xdf, 0xfe, 0xe0, 0xca, 0xeb, 0xce, 0x5b, 0xb7, 0x56, 0xa4, 0x44, 0xef, 0x2c, 0x59, 0x84, 0xf4,
0x21, 0xdd, 0xf6, 0x7e, 0x71, 0x7f, 0xb2, 0xf6, 0xf4, 0xa5, 0x97, 0x69, 0x75, 0xfc, 0xfe, 0x5c,
0x92, 0x69, 0xb5, 0x27, 0xd5, 0xf6, 0x19, 0xae, 0x7f, 0x19, 0x54, 0xb9, 0x01, 0x11, 0xa6, 0x6f,
0xaa, 0xd5, 0x9c, 0x3d, 0xb0, 0xc7, 0x0b, 0x99, 0x66, 0x9c, 0x43, 0xb1, 0x59, 0xf3, 0x22, 0x6c,
0x4a, 0x19, 0xa6, 0xc8, 0x6c, 0x7f, 0x7a, 0xcd, 0x27, 0x99, 0x89, 0x33, 0x3e, 0xc1, 0xa4, 0x71,
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0x7c, 0x86, 0x82, 0x3c, 0xaf, 0xd2, 0xff, 0x85, 0xc8, 0xee, 0xe2, 0xec, 0x2e, 0xb6, 0x67, 0x77,
0x19, 0xa8, 0xfa, 0x15, 0x66, 0xa3, 0x7e, 0xbc, 0x04, 0xb6, 0x4b, 0xea, 0xa5, 0x64, 0xbb, 0x98,
0xf6, 0x83, 0x36, 0xdb, 0xc7, 0x74, 0x48, 0xca, 0x21, 0x1d, 0xea, 0x55, 0x94, 0xc0, 0x6b, 0x28,
0xa5, 0x56, 0x1f, 0x7e, 0xb8, 0xc9, 0x01, 0x6f, 0xa0, 0x7a, 0x77, 0x86, 0xb4, 0x1f, 0x8e, 0x87,
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0x01, 0x00, 0x00,
}
任何帮助将不胜感激，谢谢！
【问题讨论】：
-
您能否将生成的
prototemps.Sensor定义（+ 方法）添加到您的问题中？ -
是的，我已经添加了。
-
您使用的是最新版本的
protoc-gen-go吗？
标签： go protocol-buffers proto protobuf-go protoreflect