[#1059] shard: Add shard mode to shard `Info`

Provide shard mode information via `DumpInfo()`. Delete atomic field from
Shard structure since it duplicates new field.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/local_object_storage/shard/delete.go

@@ -33,7 +33,7 @@ func (p *DeletePrm) WithAddresses(addr ...*objectSDK.Address) *DeletePrm {
 // Delete removes data from the shard's writeCache, metaBase and
 // blobStor.
 func (s *Shard) Delete(prm *DeletePrm) (*DeleteRes, error) {
-	if s.getMode() == ModeReadOnly {
+	if s.GetMode() == ModeReadOnly {
 		return nil, ErrReadOnlyMode
 	}
 

pkg/local_object_storage/shard/gc.go

@@ -173,7 +173,7 @@ func (gc *gc) stop() {
 // with GC-marked graves.
 // Does nothing if shard is in "read-only" mode.
 func (s *Shard) removeGarbage() {
-	if s.getMode() == ModeReadOnly {
+	if s.GetMode() == ModeReadOnly {
 		return
 	}
 

pkg/local_object_storage/shard/info.go

@@ -11,6 +11,9 @@ type Info struct {
 	// Identifier of the shard.
 	ID *ID
 
+	// Shard mode.
+	Mode Mode
+
 	// Information about the metabase.
 	MetaBaseInfo meta.Info
 

pkg/local_object_storage/shard/inhume.go

@@ -46,7 +46,7 @@ func (p *InhumePrm) MarkAsGarbage(addr ...*objectSDK.Address) *InhumePrm {
 //
 // Returns ErrReadOnlyMode error if shard is in "read-only" mode.
 func (s *Shard) Inhume(prm *InhumePrm) (*InhumeRes, error) {
-	if s.getMode() == ModeReadOnly {
+	if s.GetMode() == ModeReadOnly {
 		return nil, ErrReadOnlyMode
 	}
 

pkg/local_object_storage/shard/mode.go

@@ -37,11 +37,18 @@ func (m Mode) String() string {
 // Returns any error encountered that did not allow
 // setting shard mode.
 func (s *Shard) SetMode(m Mode) error {
-	s.mode.Store(uint32(m))
+	s.m.Lock()
+	defer s.m.Unlock()
+
+	s.info.Mode = m
 
 	return nil
 }
 
-func (s *Shard) getMode() Mode {
-	return Mode(s.mode.Load())
+// GetMode returns mode of the shard.
+func (s *Shard) GetMode() Mode {
+	s.m.RLock()
+	defer s.m.RUnlock()
+
+	return s.info.Mode
 }

pkg/local_object_storage/shard/move.go

@@ -27,7 +27,7 @@ func (p *ToMoveItPrm) WithAddress(addr *objectSDK.Address) *ToMoveItPrm {
 // ToMoveIt calls metabase.ToMoveIt method to mark object as relocatable to
 // another shard.
 func (s *Shard) ToMoveIt(prm *ToMoveItPrm) (*ToMoveItRes, error) {
-	if s.getMode() == ModeReadOnly {
+	if s.GetMode() == ModeReadOnly {
 		return nil, ErrReadOnlyMode
 	}
 

pkg/local_object_storage/shard/put.go

@@ -33,7 +33,7 @@ func (p *PutPrm) WithObject(obj *object.Object) *PutPrm {
 //
 // Returns ErrReadOnlyMode error if shard is in "read-only" mode.
 func (s *Shard) Put(prm *PutPrm) (*PutRes, error) {
-	if s.getMode() == ModeReadOnly {
+	if s.GetMode() == ModeReadOnly {
 		return nil, ErrReadOnlyMode
 	}
 

pkg/local_object_storage/shard/shard.go

@@ -2,6 +2,7 @@ package shard
 
 import (
 	"context"
+	"sync"
 	"time"
 
 	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
@@ -10,7 +11,6 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/util"
 	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
 	"github.com/nspcc-dev/neofs-sdk-go/object"
-	"go.uber.org/atomic"
 	"go.uber.org/zap"
 )
 
@@ -34,7 +34,7 @@ type Option func(*cfg)
 type ExpiredObjectsCallback func(context.Context, []*object.Address)
 
 type cfg struct {
-	mode *atomic.Uint32
+	m sync.RWMutex
 
 	refillMetabase bool
 
@@ -59,7 +59,6 @@ type cfg struct {
 
 func defaultCfg() *cfg {
 	return &cfg{
-		mode:        atomic.NewUint32(uint32(ModeReadWrite)),
 		rmBatchSize: 100,
 		log:         zap.L(),
 		gcCfg:       defaultGCCfg(),
@@ -202,13 +201,14 @@ func WithRefillMetabase(v bool) Option {
 //	- ModeReadOnly.
 func WithMode(v Mode) Option {
 	return func(c *cfg) {
-		c.mode.Store(uint32(v))
+		c.info.Mode = v
 	}
 }
 
 func (s *Shard) fillInfo() {
 	s.cfg.info.MetaBaseInfo = s.metaBase.DumpInfo()
 	s.cfg.info.BlobStorInfo = s.blobStor.DumpInfo()
+	s.cfg.info.Mode = s.GetMode()
 
 	if s.cfg.useWriteCache {
 		s.cfg.info.WriteCacheInfo = s.writeCache.DumpInfo()