Remove gogo/protobuf and adjust types

This commit migrates containerd/protobuf from github.com/gogo/protobuf
to google.golang.org/protobuf and adjust types. Proto-generated structs
cannot be passed as values.

Fixes #6564.

Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>

protobuf/any.go

@@ -17,28 +17,28 @@
 package protobuf
 
 import (
-	"github.com/containerd/containerd/protobuf/types"
 	"github.com/containerd/typeurl"
+	"google.golang.org/protobuf/types/known/anypb"
 )
 
 // FromAny converts typeurl.Any to github.com/containerd/containerd/protobuf/types.Any.
-func FromAny(from typeurl.Any) *types.Any {
+func FromAny(from typeurl.Any) *anypb.Any {
 	if from == nil {
 		return nil
 	}
 
-	if pbany, ok := from.(*types.Any); ok {
+	if pbany, ok := from.(*anypb.Any); ok {
 		return pbany
 	}
 
-	return &types.Any{
+	return &anypb.Any{
 		TypeUrl: from.GetTypeUrl(),
 		Value:   from.GetValue(),
 	}
 }
 
 // FromAny converts an arbitrary interface to github.com/containerd/containerd/protobuf/types.Any.
-func MarshalAnyToProto(from interface{}) (*types.Any, error) {
+func MarshalAnyToProto(from interface{}) (*anypb.Any, error) {
 	any, err := typeurl.MarshalAny(from)
 	if err != nil {
 		return nil, err

protobuf/proto/proto.go

@@ -18,13 +18,13 @@
 package proto
 
 import (
-	gogo "github.com/gogo/protobuf/proto"
+	google "google.golang.org/protobuf/proto"
 )
 
-func Marshal(input gogo.Message) ([]byte, error) {
-	return gogo.Marshal(input)
+func Marshal(input google.Message) ([]byte, error) {
+	return google.Marshal(input)
 }
 
-func Unmarshal(input []byte, output gogo.Message) error {
-	return gogo.Unmarshal(input, output)
+func Unmarshal(input []byte, output google.Message) error {
+	return google.Unmarshal(input, output)
 }

protobuf/timestamp.go

@@ -19,30 +19,18 @@ package protobuf
 import (
 	"time"
 
-	"github.com/gogo/protobuf/types"
+	"google.golang.org/protobuf/types/known/timestamppb"
 )
 
 // Once we migrate off from gogo/protobuf, we can use the function below, which don't return any errors.
 // https://github.com/protocolbuffers/protobuf-go/blob/v1.28.0/types/known/timestamppb/timestamp.pb.go#L200-L208
 
 // ToTimestamp creates protobuf's Timestamp from time.Time.
-func ToTimestamp(from time.Time) *types.Timestamp {
-	pt, err := types.TimestampProto(from)
-	if err != nil {
-		panic(err)
-	}
-	return pt
+func ToTimestamp(from time.Time) *timestamppb.Timestamp {
+	return timestamppb.New(from)
 }
 
 // FromTimestamp creates time.Time from protobuf's Timestamp.
-func FromTimestamp(from *types.Timestamp) time.Time {
-	if from == nil {
-		// Return time.Time's zero value as like timestamppb.
-		return time.Time{}.UTC()
-	}
-	tt, err := types.TimestampFromProto(from)
-	if err != nil {
-		panic(err)
-	}
-	return tt
+func FromTimestamp(from *timestamppb.Timestamp) time.Time {
+	return from.AsTime()
 }

protobuf/types/types.go

@@ -18,9 +18,11 @@
 package types
 
 import (
-	gogo "github.com/gogo/protobuf/types"
+	"google.golang.org/genproto/protobuf/field_mask"
+	"google.golang.org/protobuf/types/known/anypb"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
-type Empty = gogo.Empty
-type Any = gogo.Any
-type FieldMask = gogo.FieldMask
+type Empty = emptypb.Empty
+type Any = anypb.Any
+type FieldMask = field_mask.FieldMask