[#804] ape: Implement boltdb storage for local overrides

Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>

cmd/frostfs-node/config.go

@@ -29,6 +29,7 @@ import (
 	replicatorconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/replicator"
 	tracingconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/tracing"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/ape/chainbase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	netmapCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
@@ -68,6 +69,7 @@ import (
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/version"
+	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine/inmemory"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	neogoutil "github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/panjf2000/ants/v2"
@@ -518,10 +520,7 @@ type cfgObject struct {
 
 	eaclSource container.EACLSource
 
-	// Access policy chain source is used by object service to
+	cfgAccessPolicyEngine cfgAccessPolicyEngine
-	// check for operation permissions but this source is also shared with
-	// control service that dispatches local overrides.
-	apeChainSource container.AccessPolicyEngineChainSource
 
 	pool cfgObjectRoutines
 
@@ -542,6 +541,10 @@ type cfgLocalStorage struct {
 	localStorage *engine.StorageEngine
 }
 
+type cfgAccessPolicyEngine struct {
+	accessPolicyEngine *accessPolicyEngine
+}
+
 type cfgObjectRoutines struct {
 	putRemote *ants.Pool
 
@@ -970,6 +973,34 @@ func initLocalStorage(ctx context.Context, c *cfg) {
 	})
 }
 
+func initAccessPolicyEngine(_ context.Context, c *cfg) {
+	var localOverrideDB chainbase.LocalOverrideDatabase
+	if nodeconfig.PersistentPolicyRules(c.appCfg).Path() == "" {
+		c.log.Warn(logs.FrostFSNodePersistentRuleStorageDBPathIsNotSetInmemoryWillBeUsed)
+		localOverrideDB = chainbase.NewInmemoryLocalOverrideDatabase()
+	} else {
+		localOverrideDB = chainbase.NewBoltLocalOverrideDatabase(
+			chainbase.WithLogger(c.log),
+			chainbase.WithPath(nodeconfig.PersistentPolicyRules(c.appCfg).Path()),
+			chainbase.WithPerm(nodeconfig.PersistentPolicyRules(c.appCfg).Perm()),
+			chainbase.WithNoSync(nodeconfig.PersistentPolicyRules(c.appCfg).NoSync()),
+		)
+	}
+
+	morphRuleStorage := inmemory.NewInmemoryMorphRuleChainStorage()
+
+	ape := newAccessPolicyEngine(morphRuleStorage, localOverrideDB)
+	c.cfgObject.cfgAccessPolicyEngine.accessPolicyEngine = ape
+
+	c.onShutdown(func() {
+		if err := ape.LocalOverrideDatabaseCore().Close(); err != nil {
+			c.log.Warn(logs.FrostFSNodeAccessPolicyEngineClosingFailure,
+				zap.Error(err),
+			)
+		}
+	})
+}
+
 func initObjectPool(cfg *config.Config) (pool cfgObjectRoutines) {
 	var err error
 

cmd/frostfs-node/config/node/config.go

@@ -2,6 +2,7 @@ package nodeconfig
 
 import (
 	"fmt"
+	"io/fs"
 	"os"
 	"strconv"
 	"time"
@@ -30,11 +31,18 @@ type NotificationConfig struct {
 	cfg *config.Config
 }
 
+// PersistentPolicyRulesConfig is a wrapper over "persistent_policy_rules" config section
+// which provides access to persistent policy rules storage configuration of node.
+type PersistentPolicyRulesConfig struct {
+	cfg *config.Config
+}
+
 const (
-	subsection                   = "node"
+	subsection                      = "node"
-	persistentSessionsSubsection = "persistent_sessions"
+	persistentSessionsSubsection    = "persistent_sessions"
-	persistentStateSubsection    = "persistent_state"
+	persistentStateSubsection       = "persistent_state"
-	notificationSubsection       = "notification"
+	notificationSubsection          = "notification"
+	persistentPolicyRulesSubsection = "persistent_policy_rules"
 
 	attributePrefix = "attribute"
 
@@ -245,3 +253,42 @@ func (n NotificationConfig) KeyPath() string {
 func (n NotificationConfig) CAPath() string {
 	return config.StringSafe(n.cfg, "ca")
 }
+
+const (
+	// PermDefault is a default permission bits for local override storage file.
+	PermDefault = 0o644
+)
+
+// PersistentPolicyRules returns structure that provides access to "persistent_policy_rules"
+// subsection of "node" section.
+func PersistentPolicyRules(c *config.Config) PersistentPolicyRulesConfig {
+	return PersistentPolicyRulesConfig{
+		c.Sub(subsection).Sub(persistentPolicyRulesSubsection),
+	}
+}
+
+// Path returns the value of "path" config parameter.
+//
+// Returns empty string if missing, for compatibility with older configurations.
+func (l PersistentPolicyRulesConfig) Path() string {
+	return config.StringSafe(l.cfg, "path")
+}
+
+// Perm returns the value of "perm" config parameter as a fs.FileMode.
+//
+// Returns PermDefault if the value is not a positive number.
+func (l PersistentPolicyRulesConfig) Perm() fs.FileMode {
+	p := config.UintSafe((*config.Config)(l.cfg), "perm")
+	if p == 0 {
+		p = PermDefault
+	}
+
+	return fs.FileMode(p)
+}
+
+// NoSync returns the value of "no_sync" config parameter as a bool value.
+//
+// Returns false if the value is not a boolean.
+func (l PersistentPolicyRulesConfig) NoSync() bool {
+	return config.BoolSafe((*config.Config)(l.cfg), "no_sync")
+}

cmd/frostfs-node/control.go

@@ -51,7 +51,7 @@ func initControlService(c *cfg) {
 		controlSvc.WithTreeService(treeSynchronizer{
 			c.treeService,
 		}),
-		controlSvc.WithAPEChainSource(c.cfgObject.apeChainSource),
+		controlSvc.WithLocalOverrideStorage(c.cfgObject.cfgAccessPolicyEngine.accessPolicyEngine),
 	)
 
 	lis, err := net.Listen("tcp", endpoint)

cmd/frostfs-node/main.go

@@ -98,6 +98,12 @@ func initApp(ctx context.Context, c *cfg) {
 		fatalOnErr(c.cfgObject.cfgLocalStorage.localStorage.Init(ctx))
 	})
 
+	initAccessPolicyEngine(ctx, c)
+	initAndLog(c, "access policy engine", func(c *cfg) {
+		fatalOnErr(c.cfgObject.cfgAccessPolicyEngine.accessPolicyEngine.LocalOverrideDatabaseCore().Open(ctx))
+		fatalOnErr(c.cfgObject.cfgAccessPolicyEngine.accessPolicyEngine.LocalOverrideDatabaseCore().Init())
+	})
+
 	initAndLog(c, "gRPC", initGRPC)
 	initAndLog(c, "netmap", func(c *cfg) { initNetmapService(ctx, c) })
 	initAndLog(c, "accounting", func(c *cfg) { initAccountingService(ctx, c) })

cmd/frostfs-node/object.go

@@ -157,8 +157,6 @@ func initObjectService(c *cfg) {
 
 	c.replicator = createReplicator(c, keyStorage, c.bgClientCache)
 
-	c.cfgObject.apeChainSource = NewAPESource()
-
 	addPolicer(c, keyStorage, c.bgClientCache)
 
 	traverseGen := util.NewTraverserGenerator(c.netMapSource, c.cfgObject.cnrSource, c)
@@ -426,7 +424,7 @@ func createACLServiceV2(c *cfg, splitSvc *objectService.TransportSplitter, irFet
 			c.cfgObject.eaclSource,
 			eaclSDK.NewValidator(),
 			ls),
-		acl.NewAPEChecker(c.log, c.cfgObject.apeChainSource),
+		acl.NewAPEChecker(c.log, c.cfgObject.cfgAccessPolicyEngine.accessPolicyEngine.chainRouter),
 		c.cfgObject.cnrSource,
 		v2.WithLogger(c.log),
 	)

cmd/frostfs-node/policy_engine.go

@@ -3,33 +3,63 @@ package main
 import (
 	"sync"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/ape/chainbase"
-	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine/inmemory"
+	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
 )
 
-type apeChainSourceImpl struct {
+type accessPolicyEngine struct {
-	mtx               sync.Mutex
+	mtx sync.RWMutex
-	localChainStorage map[cid.ID]engine.LocalOverrideEngine
+
+	chainRouter engine.ChainRouter
+
+	morphChainStorage engine.MorphRuleChainStorage
+
+	localOverrideDatabase chainbase.LocalOverrideDatabase
 }
 
-func NewAPESource() container.AccessPolicyEngineChainSource {
+var _ engine.LocalOverrideEngine = (*accessPolicyEngine)(nil)
-	return &apeChainSourceImpl{
+
-		localChainStorage: make(map[cid.ID]engine.LocalOverrideEngine),
+func newAccessPolicyEngine(
+	morphChainStorage engine.MorphRuleChainStorage,
+	localOverrideDatabase chainbase.LocalOverrideDatabase) *accessPolicyEngine {
+	return &accessPolicyEngine{
+		chainRouter: engine.NewDefaultChainRouterWithLocalOverrides(
+			morphChainStorage,
+			localOverrideDatabase,
+		),
+
+		morphChainStorage: morphChainStorage,
+
+		localOverrideDatabase: localOverrideDatabase,
 	}
 }
 
-var _ container.AccessPolicyEngineChainSource = (*apeChainSourceImpl)(nil)
+func (a *accessPolicyEngine) IsAllowed(name chain.Name, target engine.RequestTarget, r resource.Request) (status chain.Status, found bool, err error) {
+	a.mtx.RLock()
+	defer a.mtx.RUnlock()
 
-func (c *apeChainSourceImpl) GetChainSource(cid cid.ID) (engine.LocalOverrideEngine, error) {
+	return a.chainRouter.IsAllowed(name, target, r)
-	c.mtx.Lock()
+}
-	defer c.mtx.Unlock()
+
-
+func (a *accessPolicyEngine) MorphRuleChainStorage() engine.MorphRuleChainStorage {
-	s, ok := c.localChainStorage[cid]
+	a.mtx.Lock()
-	if ok {
+	defer a.mtx.Unlock()
-		return s, nil
+
-	}
+	return a.morphChainStorage
-	c.localChainStorage[cid] = inmemory.NewInMemoryLocalOverrides()
+}
-	return c.localChainStorage[cid], nil
+
+func (a *accessPolicyEngine) LocalStorage() engine.LocalOverrideStorage {
+	a.mtx.Lock()
+	defer a.mtx.Unlock()
+
+	return a.localOverrideDatabase
+}
+
+func (a *accessPolicyEngine) LocalOverrideDatabaseCore() chainbase.DatabaseCore {
+	a.mtx.Lock()
+	defer a.mtx.Unlock()
+
+	return a.localOverrideDatabase
 }

internal/logs/logs.go

@@ -429,7 +429,9 @@ const (
 	FrostFSNodeFailedToAttachShardToEngine                                  = "failed to attach shard to engine"
 	FrostFSNodeShardAttachedToEngine                                        = "shard attached to engine"
 	FrostFSNodeClosingComponentsOfTheStorageEngine                          = "closing components of the storage engine..."
+	FrostFSNodeAccessPolicyEngineClosingFailure                             = "ape closing failure"
 	FrostFSNodeStorageEngineClosingFailure                                  = "storage engine closing failure"
+	FrostFSNodePersistentRuleStorageDBPathIsNotSetInmemoryWillBeUsed        = "persistent rule storage db path is not set: in-memory will be used"
 	FrostFSNodeAllComponentsOfTheStorageEngineClosedSuccessfully            = "all components of the storage engine closed successfully"
 	FrostFSNodeBootstrappingWithTheMaintenanceState                         = "bootstrapping with the maintenance state"
 	FrostFSNodeBootstrappingWithOnlineState                                 = "bootstrapping with online state"

pkg/ape/chainbase/boltdb.go

@@ -0,0 +1,250 @@
+package chainbase
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"path/filepath"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
+	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
+	policyengine "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
+	"github.com/nspcc-dev/neo-go/pkg/util/slice"
+	"go.etcd.io/bbolt"
+)
+
+type boltLocalOverrideStorage struct {
+	*cfg
+
+	db *bbolt.DB
+}
+
+var (
+	chainBucket = []byte{0}
+)
+
+var (
+	ErrChainBucketNotFound = logicerr.New("chain root bucket has not been found")
+
+	ErrChainNotFound = logicerr.New("chain has not been found")
+
+	ErrGlobalNamespaceBucketNotFound = logicerr.New("global namespace bucket has not been found")
+
+	ErrTargetTypeBucketNotFound = logicerr.New("target type bucket has not been found")
+
+	ErrTargetNameBucketNotFound = logicerr.New("target name bucket has not been found")
+)
+
+// NewBoltLocalOverrideDatabase returns storage wrapper for storing access policy engine
+// local overrides.
+//
+// chain storage (chainBucket):
+// -> global namespace bucket (nBucket):
+// --> target bucket (tBucket)
+// ---> target name (resource) bucket (rBucket):
+//
+// |        Key          |      Value        |
+// x---------------------x-------------------x
+// |  chain id (string)  | serialized chain  |
+// x---------------------x-------------------x
+//
+//nolint:godot
+func NewBoltLocalOverrideDatabase(opts ...Option) LocalOverrideDatabase {
+	c := defaultCfg()
+
+	for i := range opts {
+		opts[i](c)
+	}
+
+	return &boltLocalOverrideStorage{
+		cfg: c,
+	}
+}
+
+func (cs *boltLocalOverrideStorage) Init() error {
+	return cs.db.Update(func(tx *bbolt.Tx) error {
+		_, err := tx.CreateBucketIfNotExists(chainBucket)
+		return err
+	})
+}
+
+func (cs *boltLocalOverrideStorage) Open(context.Context) error {
+	err := util.MkdirAllX(filepath.Dir(cs.path), cs.perm)
+	if err != nil {
+		return fmt.Errorf("can't create dir %s for the chain DB: %w", cs.path, err)
+	}
+
+	opts := *bbolt.DefaultOptions
+	opts.NoSync = cs.noSync
+	opts.Timeout = 100 * time.Millisecond
+
+	cs.db, err = bbolt.Open(cs.path, cs.perm, &opts)
+	if err != nil {
+		return fmt.Errorf("can't open the chain DB: %w", err)
+	}
+
+	cs.db.MaxBatchSize = cs.maxBatchSize
+	cs.db.MaxBatchDelay = cs.maxBatchDelay
+
+	return nil
+}
+
+func (cs *boltLocalOverrideStorage) Close() error {
+	var err error
+	if cs.db != nil {
+		err = cs.db.Close()
+	}
+	return err
+}
+
+func getTargetBucket(tx *bbolt.Tx, name chain.Name, target policyengine.Target) (*bbolt.Bucket, error) {
+	cbucket := tx.Bucket(chainBucket)
+	if cbucket == nil {
+		return nil, ErrChainBucketNotFound
+	}
+
+	nbucket := cbucket.Bucket([]byte(name))
+	if nbucket == nil {
+		return nil, fmt.Errorf("global namespace %s: %w", name, ErrGlobalNamespaceBucketNotFound)
+	}
+
+	typeBucket := nbucket.Bucket([]byte{byte(target.Type)})
+	if typeBucket == nil {
+		return nil, fmt.Errorf("type bucket '%c': %w", target.Type, ErrTargetTypeBucketNotFound)
+	}
+
+	rbucket := typeBucket.Bucket([]byte(target.Name))
+	if rbucket == nil {
+		return nil, fmt.Errorf("target name bucket %s: %w", target.Name, ErrTargetNameBucketNotFound)
+	}
+
+	return rbucket, nil
+}
+
+func getTargetBucketCreateIfEmpty(tx *bbolt.Tx, name chain.Name, target policyengine.Target) (*bbolt.Bucket, error) {
+	cbucket := tx.Bucket(chainBucket)
+	if cbucket == nil {
+		return nil, ErrChainBucketNotFound
+	}
+
+	nbucket := cbucket.Bucket([]byte(name))
+	if nbucket == nil {
+		var err error
+		nbucket, err = cbucket.CreateBucket([]byte(name))
+		if err != nil {
+			return nil, fmt.Errorf("could not create a bucket for the global chain name %s: %w", name, err)
+		}
+	}
+
+	typeBucket := nbucket.Bucket([]byte{byte(target.Type)})
+	if typeBucket == nil {
+		var err error
+		typeBucket, err = cbucket.CreateBucket([]byte{byte(target.Type)})
+		if err != nil {
+			return nil, fmt.Errorf("could not create a bucket for the target type '%c': %w", target.Type, err)
+		}
+	}
+
+	rbucket := typeBucket.Bucket([]byte(target.Name))
+	if rbucket == nil {
+		var err error
+		rbucket, err = typeBucket.CreateBucket([]byte(target.Name))
+		if err != nil {
+			return nil, fmt.Errorf("could not create a bucket for the target name %s: %w", target.Name, err)
+		}
+	}
+
+	return rbucket, nil
+}
+
+func (cs *boltLocalOverrideStorage) AddOverride(name chain.Name, target policyengine.Target, c *chain.Chain) (chain.ID, error) {
+	if c.ID == "" {
+		return "", fmt.Errorf("chain ID is not set")
+	}
+
+	serializedChain := c.Bytes()
+
+	err := cs.db.Update(func(tx *bbolt.Tx) error {
+		rbuck, err := getTargetBucketCreateIfEmpty(tx, name, target)
+		if err != nil {
+			return err
+		}
+		return rbuck.Put([]byte(c.ID), serializedChain)
+	})
+
+	return c.ID, err
+}
+
+func (cs *boltLocalOverrideStorage) GetOverride(name chain.Name, target policyengine.Target, chainID chain.ID) (*chain.Chain, error) {
+	var serializedChain []byte
+
+	if err := cs.db.View(func(tx *bbolt.Tx) error {
+		rbuck, err := getTargetBucket(tx, name, target)
+		if err != nil {
+			return err
+		}
+		serializedChain = rbuck.Get([]byte(chainID))
+		if serializedChain == nil {
+			return ErrChainNotFound
+		}
+		serializedChain = slice.Copy(serializedChain)
+		return nil
+	}); err != nil {
+		return nil, err
+	}
+
+	c := &chain.Chain{}
+	if err := json.Unmarshal(serializedChain, c); err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+func (cs *boltLocalOverrideStorage) RemoveOverride(name chain.Name, target policyengine.Target, chainID chain.ID) error {
+	return cs.db.Update(func(tx *bbolt.Tx) error {
+		rbuck, err := getTargetBucket(tx, name, target)
+		if err != nil {
+			return err
+		}
+		return rbuck.Delete([]byte(chainID))
+	})
+}
+
+func (cs *boltLocalOverrideStorage) ListOverrides(name chain.Name, target policyengine.Target) ([]*chain.Chain, error) {
+	var serializedChains [][]byte
+	var serializedChain []byte
+	if err := cs.db.View(func(tx *bbolt.Tx) error {
+		rbuck, err := getTargetBucket(tx, name, target)
+		if err != nil {
+			return err
+		}
+		return rbuck.ForEach(func(_, v []byte) error {
+			serializedChain = slice.Copy(v)
+			serializedChains = append(serializedChains, serializedChain)
+			return nil
+		})
+	}); err != nil {
+		if errors.Is(err, ErrGlobalNamespaceBucketNotFound) || errors.Is(err, ErrTargetNameBucketNotFound) {
+			return []*chain.Chain{}, nil
+		}
+		return nil, err
+	}
+	chains := make([]*chain.Chain, 0, len(serializedChains))
+	for _, serializedChain = range serializedChains {
+		c := &chain.Chain{}
+		if err := json.Unmarshal(serializedChain, c); err != nil {
+			return nil, err
+		}
+		chains = append(chains, c)
+	}
+	return chains, nil
+}
+
+func (cs *boltLocalOverrideStorage) DropAllOverrides(name chain.Name) error {
+	return cs.db.Update(func(tx *bbolt.Tx) error {
+		return tx.DeleteBucket([]byte(name))
+	})
+}

pkg/ape/chainbase/inmemory.go

@@ -0,0 +1,30 @@
+package chainbase
+
+import (
+	"context"
+
+	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
+	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine/inmemory"
+)
+
+type inmemoryLocalOverrideStorage struct {
+	engine.LocalOverrideStorage
+}
+
+func NewInmemoryLocalOverrideDatabase() LocalOverrideDatabase {
+	return &inmemoryLocalOverrideStorage{
+		LocalOverrideStorage: inmemory.NewInmemoryLocalStorage(),
+	}
+}
+
+func (cs *inmemoryLocalOverrideStorage) Init() error {
+	return nil
+}
+
+func (cs *inmemoryLocalOverrideStorage) Open(_ context.Context) error {
+	return nil
+}
+
+func (cs *inmemoryLocalOverrideStorage) Close() error {
+	return nil
+}

pkg/ape/chainbase/interface.go

@@ -0,0 +1,22 @@
+package chainbase
+
+import (
+	"context"
+
+	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
+)
+
+// DatabaseCore interface provides methods to initialize and manage local override storage
+// as database.
+type DatabaseCore interface {
+	Init() error
+	Open(context.Context) error
+	Close() error
+}
+
+// LocalOverrideDatabase interface provides methods to manage local override storage
+// as database and as the APE's local override storage.
+type LocalOverrideDatabase interface {
+	DatabaseCore
+	engine.LocalOverrideStorage
+}

pkg/ape/chainbase/option.go

@@ -0,0 +1,67 @@
+package chainbase
+
+import (
+	"io/fs"
+	"os"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+	"go.etcd.io/bbolt"
+	"go.uber.org/zap"
+)
+
+type Option func(*cfg)
+
+type cfg struct {
+	path          string
+	perm          fs.FileMode
+	noSync        bool
+	maxBatchDelay time.Duration
+	maxBatchSize  int
+	log           *logger.Logger
+}
+
+func defaultCfg() *cfg {
+	return &cfg{
+		perm:          os.ModePerm,
+		maxBatchDelay: bbolt.DefaultMaxBatchDelay,
+		maxBatchSize:  bbolt.DefaultMaxBatchSize,
+		log:           &logger.Logger{Logger: zap.L()},
+	}
+}
+
+func WithPath(path string) Option {
+	return func(c *cfg) {
+		c.path = path
+	}
+}
+
+func WithPerm(perm fs.FileMode) Option {
+	return func(c *cfg) {
+		c.perm = perm
+	}
+}
+
+func WithNoSync(noSync bool) Option {
+	return func(c *cfg) {
+		c.noSync = noSync
+	}
+}
+
+func WithMaxBatchDelay(maxBatchDelay time.Duration) Option {
+	return func(c *cfg) {
+		c.maxBatchDelay = maxBatchDelay
+	}
+}
+
+func WithMaxBatchSize(maxBatchSize int) Option {
+	return func(c *cfg) {
+		c.maxBatchSize = maxBatchSize
+	}
+}
+
+func WithLogger(l *logger.Logger) Option {
+	return func(c *cfg) {
+		c.log = l
+	}
+}

pkg/core/container/storage.go

@@ -7,7 +7,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 )
 
 // Container groups information about the FrostFS container stored in the FrostFS network.
@@ -72,10 +71,3 @@ type EACLSource interface {
 	// eACL table is not in source.
 	GetEACL(cid.ID) (*EACL, error)
 }
-
-// AccessPolicyEngineChainSource interface provides methods to access and manipulate
-// policy engine chain storage.
-type AccessPolicyEngineChainSource interface {
-	// TODO (aarifullin): Better to use simpler interface instead CachedChainStorage.
-	GetChainSource(cid cid.ID) (engine.LocalOverrideEngine, error)
-}

pkg/services/control/server/policy_engine.go

@@ -4,34 +4,24 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"strings"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
-	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	apechain "git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	engine "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	nativeschema "git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )
 
-// extractCID extracts CID from the schema's pattern.
+func apeTarget(chainTarget *control.ChainTarget) (engine.Target, error) {
-// TODO (aarifullin): This is temporary solution should be replaced by
+	switch chainTarget.GetType() {
-// resource name validation.
+	case control.ChainTarget_CONTAINER:
-func extractCID(resource string) (cid.ID, error) {
+		return engine.ContainerTarget(chainTarget.GetName()), nil
-	var cidStr string
+	case control.ChainTarget_NAMESPACE:
-
+		return engine.NamespaceTarget(chainTarget.GetName()), nil
-	// Sscanf requires to make tokens delimited by spaces.
+	default:
-	pattern := strings.Replace(nativeschema.ResourceFormatRootContainerObjects, "/", " ", -1)
-	resource = strings.Replace(resource, "/", " ", -1)
-
-	if _, err := fmt.Sscanf(resource, pattern, &cidStr); err != nil {
-		err = fmt.Errorf("could not parse the target name '%s' to CID: %w", resource, err)
-		return cid.ID{}, err
 	}
-	var cid cid.ID
+	return engine.Target{}, status.Error(codes.InvalidArgument,
-	err := cid.DecodeString(cidStr)
+		fmt.Errorf("target type is not supported: %s", chainTarget.GetType().String()).Error())
-	return cid, err
 }
 
 func (s *Server) AddChainLocalOverride(_ context.Context, req *control.AddChainLocalOverrideRequest) (*control.AddChainLocalOverrideResponse, error) {
@@ -39,34 +29,23 @@ func (s *Server) AddChainLocalOverride(_ context.Context, req *control.AddChainL
 		return nil, status.Error(codes.PermissionDenied, err.Error())
 	}
 
-	target := req.GetBody().GetTarget()
-	if target.Type != control.ChainTarget_CONTAINER {
-		return nil, status.Error(codes.Internal, fmt.Errorf("target type is not supported: %s", target.Type.String()).Error())
-	}
-
-	cid, err := extractCID(target.GetName())
-	if err != nil {
-		return nil, status.Error(codes.InvalidArgument, err.Error())
-	}
-
 	var chain apechain.Chain
-	if err = chain.DecodeBytes(req.GetBody().GetChain()); err != nil {
+	if err := chain.DecodeBytes(req.GetBody().GetChain()); err != nil {
 		return nil, status.Error(codes.InvalidArgument, err.Error())
 	}
 
-	src, err := s.apeChainSrc.GetChainSource(cid)
-	if err != nil {
-		return nil, status.Error(codes.Internal, err.Error())
-	}
-
 	s.apeChainCounter.Add(1)
 	// TODO (aarifullin): the such chain id is not well-designed yet.
 	if chain.ID == "" {
 		chain.ID = apechain.ID(fmt.Sprintf("%s:%d", apechain.Ingress, s.apeChainCounter.Load()))
 	}
 
-	resource := fmt.Sprintf(nativeschema.ResourceFormatRootContainerObjects, cid.EncodeToString())
+	target, err := apeTarget(req.GetBody().GetTarget())
-	if _, err = src.LocalStorage().AddOverride(apechain.Ingress, engine.ContainerTarget(resource), &chain); err != nil {
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err = s.localOverrideStorage.LocalStorage().AddOverride(apechain.Ingress, target, &chain); err != nil {
 		return nil, status.Error(getCodeByLocalStorageErr(err), err.Error())
 	}
 
@@ -87,23 +66,11 @@ func (s *Server) GetChainLocalOverride(_ context.Context, req *control.GetChainL
 		return nil, status.Error(codes.PermissionDenied, err.Error())
 	}
 
-	target := req.GetBody().GetTarget()
+	target, err := apeTarget(req.GetBody().GetTarget())
-	if target.Type != control.ChainTarget_CONTAINER {
-		return nil, status.Error(codes.Internal, fmt.Errorf("target type is not supported: %s", target.Type.String()).Error())
-	}
-
-	cid, err := extractCID(target.GetName())
 	if err != nil {
-		return nil, status.Error(codes.InvalidArgument, err.Error())
+		return nil, err
 	}
-
+	chain, err := s.localOverrideStorage.LocalStorage().GetOverride(apechain.Ingress, target, apechain.ID(req.GetBody().GetChainId()))
-	src, err := s.apeChainSrc.GetChainSource(cid)
-	if err != nil {
-		return nil, status.Error(codes.Internal, err.Error())
-	}
-
-	resource := fmt.Sprintf(nativeschema.ResourceFormatRootContainerObjects, cid.EncodeToString())
-	chain, err := src.LocalStorage().GetOverride(apechain.Ingress, engine.ContainerTarget(resource), apechain.ID(req.GetBody().GetChainId()))
 	if err != nil {
 		return nil, status.Error(getCodeByLocalStorageErr(err), err.Error())
 	}
@@ -125,23 +92,12 @@ func (s *Server) ListChainLocalOverrides(_ context.Context, req *control.ListCha
 		return nil, status.Error(codes.PermissionDenied, err.Error())
 	}
 
-	target := req.GetBody().GetTarget()
+	target, err := apeTarget(req.GetBody().GetTarget())
-	if target.Type != control.ChainTarget_CONTAINER {
-		return nil, status.Error(codes.Internal, fmt.Errorf("target type is not supported: %s", target.Type.String()).Error())
-	}
-
-	cid, err := extractCID(target.GetName())
 	if err != nil {
-		return nil, status.Error(codes.InvalidArgument, err.Error())
+		return nil, err
 	}
 
-	src, err := s.apeChainSrc.GetChainSource(cid)
+	chains, err := s.localOverrideStorage.LocalStorage().ListOverrides(apechain.Ingress, target)
-	if err != nil {
-		return nil, status.Error(codes.Internal, err.Error())
-	}
-
-	resource := fmt.Sprintf(nativeschema.ResourceFormatRootContainerObjects, cid.EncodeToString())
-	chains, err := src.LocalStorage().ListOverrides(apechain.Ingress, engine.ContainerTarget(resource))
 	if err != nil {
 		return nil, status.Error(getCodeByLocalStorageErr(err), err.Error())
 	}
@@ -167,23 +123,12 @@ func (s *Server) RemoveChainLocalOverride(_ context.Context, req *control.Remove
 		return nil, status.Error(codes.PermissionDenied, err.Error())
 	}
 
-	target := req.GetBody().GetTarget()
+	target, err := apeTarget(req.GetBody().GetTarget())
-	if target.Type != control.ChainTarget_CONTAINER {
-		return nil, status.Error(codes.Internal, fmt.Errorf("target type is not supported: %s", target.Type.String()).Error())
-	}
-
-	cid, err := extractCID(target.GetName())
 	if err != nil {
-		return nil, status.Error(codes.InvalidArgument, err.Error())
+		return nil, err
 	}
 
-	src, err := s.apeChainSrc.GetChainSource(cid)
+	if err = s.localOverrideStorage.LocalStorage().RemoveOverride(apechain.Ingress, target, apechain.ID(req.GetBody().GetChainId())); err != nil {
-	if err != nil {
-		return nil, status.Error(codes.Internal, err.Error())
-	}
-
-	resource := fmt.Sprintf(nativeschema.ResourceFormatRootContainerObjects, cid.EncodeToString())
-	if err = src.LocalStorage().RemoveOverride(apechain.Ingress, engine.ContainerTarget(resource), apechain.ID(req.GetBody().GetChainId())); err != nil {
 		return nil, status.Error(getCodeByLocalStorageErr(err), err.Error())
 	}
 	resp := &control.RemoveChainLocalOverrideResponse{

pkg/services/control/server/server.go

@@ -9,6 +9,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/replicator"
+	policyengine "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 )
 
 // Server is an entity that serves
@@ -51,6 +52,14 @@ type NodeState interface {
 	ForceMaintenance() error
 }
 
+// LocalOverrideStorageDecorator interface provides methods to decorate LocalOverrideEngine
+// interface methods.
+type LocalOverrideStorageDecorator interface {
+	// LocalStorage method can be decorated by using sync primitives in the case if the local
+	// override storage state should be consistent for chain router.
+	LocalStorage() policyengine.LocalOverrideStorage
+}
+
 // Option of the Server's constructor.
 type Option func(*cfg)
 
@@ -65,7 +74,7 @@ type cfg struct {
 
 	cnrSrc container.Source
 
-	apeChainSrc container.AccessPolicyEngineChainSource
+	localOverrideStorage LocalOverrideStorageDecorator
 
 	replicator *replicator.Replicator
 
@@ -160,10 +169,10 @@ func WithTreeService(s TreeService) Option {
 	}
 }
 
-// WithAPEChainSource returns the option to set access policy engine
+// WithLocalOverrideStorage returns the option to set access policy engine
-// chain source.
+// chain override storage.
-func WithAPEChainSource(apeChainSrc container.AccessPolicyEngineChainSource) Option {
+func WithLocalOverrideStorage(localOverrideStorage LocalOverrideStorageDecorator) Option {
 	return func(c *cfg) {
-		c.apeChainSrc = apeChainSrc
+		c.localOverrideStorage = localOverrideStorage
 	}
 }

pkg/services/object/acl/ape.go

@@ -1,10 +1,8 @@
 package acl
 
 import (
-	"errors"
 	"fmt"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	v2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/acl/v2"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
@@ -12,34 +10,25 @@ import (
 	policyengine "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 )
 
-var errAPEChainNoSource = errors.New("could not get ape chain source for the container")
-
 type apeCheckerImpl struct {
-	log    *logger.Logger
+	log         *logger.Logger
-	apeSrc container.AccessPolicyEngineChainSource
+	chainRouter policyengine.ChainRouter
 }
 
-func NewAPEChecker(log *logger.Logger, apeSrc container.AccessPolicyEngineChainSource) v2.APEChainChecker {
+func NewAPEChecker(log *logger.Logger, chainRouter policyengine.ChainRouter) v2.APEChainChecker {
 	return &apeCheckerImpl{
-		log:    log,
+		log:         log,
-		apeSrc: apeSrc,
+		chainRouter: chainRouter,
 	}
 }
 
 func (c *apeCheckerImpl) CheckIfRequestPermitted(reqInfo v2.RequestInfo) error {
-	cnr := reqInfo.ContainerID()
-
-	chainCache, err := c.apeSrc.GetChainSource(cnr)
-	if err != nil {
-		return errAPEChainNoSource
-	}
-
 	request := new(Request)
 	request.FromRequestInfo(reqInfo)
 
 	cnrTarget := getResource(reqInfo).Name()
 
-	status, ruleFound, err := chainCache.IsAllowed(apechain.Ingress, policyengine.NewRequestTargetWithContainer(cnrTarget), request)
+	status, ruleFound, err := c.chainRouter.IsAllowed(apechain.Ingress, policyengine.NewRequestTargetWithContainer(cnrTarget), request)
 	if err != nil {
 		return err
 	}