[#1312] Drop handling of system attributes with NeoFS prefix

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>

cmd/frostfs-cli/modules/container/list_objects.go

@@ -1,9 +1,6 @@
 package container
 
 import (
-	"strings"
-
-	v2object "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
 	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
@@ -67,14 +64,8 @@ var listContainerObjectsCmd = &cobra.Command{
 
 				resHead, err := internalclient.HeadObject(cmd.Context(), prmHead)
 				if err == nil {
-					attrs := resHead.Header().Attributes()
+					for _, attr := range resHead.Header().UserAttributes() {
-					for i := range attrs {
+						cmd.Printf("  %s: %s\n", attr.Key(), attr.Value())
-						attrKey := attrs[i].Key()
-						if !strings.HasPrefix(attrKey, v2object.SysAttributePrefix) && !strings.HasPrefix(attrKey, v2object.SysAttributePrefixNeoFS) {
-							// FIXME(@cthulhu-rider): https://git.frostfs.info/TrueCloudLab/frostfs-sdk-go/issues/97
-							//	Use dedicated method to skip system attributes.
-							cmd.Printf("  %s: %s\n", attrKey, attrs[i].Value())
-						}
 					}
 				} else {
 					cmd.Printf("  failed to read attributes: %v\n", err)

pkg/core/object/fmt.go

@@ -361,7 +361,7 @@ func (v *FormatValidator) checkIfExpired(ctx context.Context, obj *objectSDK.Obj
 
 func expirationEpochAttribute(obj *objectSDK.Object) (uint64, error) {
 	for _, a := range obj.Attributes() {
-		if a.Key() != objectV2.SysAttributeExpEpoch && a.Key() != objectV2.SysAttributeExpEpochNeoFS {
+		if a.Key() != objectV2.SysAttributeExpEpoch {
 			continue
 		}
 

pkg/local_object_storage/metabase/put.go

@@ -387,10 +387,6 @@ func hasExpirationEpoch(obj *objectSDK.Object) (uint64, bool) {
 		attributes = ech.ParentAttributes()
 	}
 	for _, attr := range attributes {
-		if attr.Key() == objectV2.SysAttributeExpEpochNeoFS {
-			expEpoch, err := strconv.ParseUint(attr.Value(), 10, 64)
-			return expEpoch, err == nil
-		}
 		if attr.Key() == objectV2.SysAttributeExpEpoch {
 			expEpoch, err := strconv.ParseUint(attr.Value(), 10, 64)
 			return expEpoch, err == nil

pkg/local_object_storage/metabase/upgrade.go

@@ -252,7 +252,7 @@ func getNextObjectsWithExpirationEpochBatch(ctx context.Context, db *bbolt.DB, i
 				continue
 			}
 			attributeKey := string(attrKey[1+cidSize:])
-			if attributeKey != objectV2.SysAttributeExpEpochNeoFS && attributeKey != objectV2.SysAttributeExpEpoch {
+			if attributeKey != objectV2.SysAttributeExpEpoch {
 				continue
 			}
 			var containerID cid.ID

pkg/services/object_manager/tombstone/checker.go

@@ -74,7 +74,7 @@ func (g *ExpirationChecker) IsTombstoneAvailable(ctx context.Context, a oid.Addr
 
 func (g *ExpirationChecker) handleTS(addr string, ts *objectSDK.Object, reqEpoch uint64) bool {
 	for _, atr := range ts.Attributes() {
-		if atr.Key() == objectV2.SysAttributeExpEpoch || atr.Key() == objectV2.SysAttributeExpEpochNeoFS {
+		if atr.Key() == objectV2.SysAttributeExpEpoch {
 			epoch, err := strconv.ParseUint(atr.Value(), 10, 64)
 			if err != nil {
 				g.log.Warn(