Change headsync logic (ensure space closing on nodes)

client/storage/storageservice.go

@@ -38,6 +38,16 @@ func (s *storageService) SpaceStorage(id string) (spacestorage.SpaceStorage, err
 	return newSpaceStorage(s.db, id)
 }
 
+func (s *storageService) SpaceExists(id string) bool {
+	return s.db.View(func(txn *badger.Txn) error {
+		_, err := getTxn(txn, newSpaceKeys(id).HeaderKey())
+		if err != nil {
+			return err
+		}
+		return nil
+	}) == nil
+}
+
 func (s *storageService) CreateSpaceStorage(payload spacestorage.SpaceStorageCreatePayload) (spacestorage.SpaceStorage, error) {
 	return createSpaceStorage(s.db, payload)
 }

common/commonspace/confconnector/confconnector.go

@@ -5,7 +5,7 @@ import (
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/net/peer"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/net/pool"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/nodeconf"
-	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/util/slice"
+	"golang.org/x/exp/slices"
 )
 
 type ConfConnector interface {
@@ -50,7 +50,7 @@ func (s *confConnector) connectOneOrMany(
 		allNodes        = s.conf.NodeIds(spaceId)
 	)
 	for _, id := range allNodes {
-		if slice.FindPos(activeNodeIds, id) == -1 {
+		if !slices.Contains(activeNodeIds, id) {
 			inactiveNodeIds = append(inactiveNodeIds, id)
 		}
 	}

common/commonspace/objectsync/objectsync.go

@@ -9,7 +9,6 @@ import (
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace/object/syncobjectgetter"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace/objectsync/synchandler"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace/spacesyncproto"
-	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/util/periodicsync"
 	"go.uber.org/zap"
 	"time"
 )
@@ -32,7 +31,6 @@ type objectSync struct {
 
 	streamPool   StreamPool
 	checker      StreamChecker
-	periodicSync periodicsync.PeriodicSync
 	objectGetter syncobjectgetter.SyncObjectGetter
 	actionQueue  ActionQueue
 
@@ -42,8 +40,7 @@ type objectSync struct {
 
 func NewObjectSync(
 	spaceId string,
-	confConnector confconnector.ConfConnector,
+	confConnector confconnector.ConfConnector) (objectSync ObjectSync) {
-	periodicSeconds int) (objectSync ObjectSync) {
 	streamPool := newStreamPool(func(ctx context.Context, senderId string, message *spacesyncproto.ObjectSyncMessage) (err error) {
 		return objectSync.HandleMessage(ctx, senderId, message)
 	})
@@ -57,14 +54,9 @@ func NewObjectSync(
 		clientFactory,
 		syncCtx,
 		syncLog)
-	periodicSync := periodicsync.NewPeriodicSync(periodicSeconds, 0, func(ctx context.Context) error {
-		checker.CheckResponsiblePeers()
-		return nil
-	}, syncLog)
 	objectSync = newObjectSync(
 		spaceId,
 		streamPool,
-		periodicSync,
 		checker,
 		syncCtx,
 		cancel)
@@ -74,31 +66,28 @@ func NewObjectSync(
 func newObjectSync(
 	spaceId string,
 	streamPool StreamPool,
-	periodicSync periodicsync.PeriodicSync,
 	checker StreamChecker,
 	syncCtx context.Context,
 	cancel context.CancelFunc,
 ) *objectSync {
 	return &objectSync{
-		periodicSync: periodicSync,
+		streamPool:  streamPool,
-		streamPool:   streamPool,
+		spaceId:     spaceId,
-		spaceId:      spaceId,
+		checker:     checker,
-		checker:      checker,
+		syncCtx:     syncCtx,
-		syncCtx:      syncCtx,
+		cancelSync:  cancel,
-		cancelSync:   cancel,
+		actionQueue: NewDefaultActionQueue(),
-		actionQueue:  NewDefaultActionQueue(),
 	}
 }
 
 func (s *objectSync) Init(objectGetter syncobjectgetter.SyncObjectGetter) {
 	s.objectGetter = objectGetter
 	s.actionQueue.Run()
-	s.periodicSync.Run()
+	go s.checker.CheckResponsiblePeers()
 }
 
 func (s *objectSync) Close() (err error) {
 	s.actionQueue.Close()
-	s.periodicSync.Close()
 	s.cancelSync()
 	return s.streamPool.Close()
 }

common/commonspace/spaceservice.go

@@ -118,7 +118,7 @@ func (s *spaceService) NewSpace(ctx context.Context, id string) (Space, error) {
 	}
 
 	headSync := headsync.NewHeadSync(id, s.config.SyncPeriod, st, confConnector, s.treeGetter, syncStatus, log)
-	objectSync := objectsync.NewObjectSync(id, confConnector, s.config.SyncPeriod)
+	objectSync := objectsync.NewObjectSync(id, confConnector)
 	sp := &space{
 		id:            id,
 		objectSync:    objectSync,

common/commonspace/spacestorage/storage.go

@@ -47,6 +47,7 @@ type SpaceStorageCreatePayload struct {
 type SpaceStorageProvider interface {
 	app.Component
 	SpaceStorage(id string) (SpaceStorage, error)
+	SpaceExists(id string) bool
 	CreateSpaceStorage(payload SpaceStorageCreatePayload) (SpaceStorage, error)
 }
 

common/commonspace/spacesyncproto/errors.go

@@ -8,7 +8,8 @@ import (
 var (
 	errGroup = rpcerr.ErrGroup(ErrCodes_ErrorOffset)
 
-	ErrUnexpected   = errGroup.Register(errors.New("unexpected error"), uint64(ErrCodes_Unexpected))
+	ErrUnexpected      = errGroup.Register(errors.New("unexpected error"), uint64(ErrCodes_Unexpected))
-	ErrSpaceMissing = errGroup.Register(errors.New("space is missing"), uint64(ErrCodes_SpaceMissing))
+	ErrSpaceMissing    = errGroup.Register(errors.New("space is missing"), uint64(ErrCodes_SpaceMissing))
-	ErrSpaceExists  = errGroup.Register(errors.New("space exists"), uint64(ErrCodes_SpaceExists))
+	ErrSpaceExists     = errGroup.Register(errors.New("space exists"), uint64(ErrCodes_SpaceExists))
+	ErrSpaceNotInCache = errGroup.Register(errors.New("space not in cache"), uint64(ErrCodes_SpaceNotInCache))
 )

common/commonspace/spacesyncproto/protos/spacesync.proto

@@ -7,6 +7,7 @@ enum ErrCodes {
     Unexpected = 0;
     SpaceMissing = 1;
     SpaceExists = 2;
+    SpaceNotInCache = 3;
     ErrorOffset = 100;
 }
 

common/commonspace/spacesyncproto/spacesync.pb.go

@@ -25,24 +25,27 @@ const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 type ErrCodes int32
 
 const (
-	ErrCodes_Unexpected   ErrCodes = 0
+	ErrCodes_Unexpected      ErrCodes = 0
-	ErrCodes_SpaceMissing ErrCodes = 1
+	ErrCodes_SpaceMissing    ErrCodes = 1
-	ErrCodes_SpaceExists  ErrCodes = 2
+	ErrCodes_SpaceExists     ErrCodes = 2
-	ErrCodes_ErrorOffset  ErrCodes = 100
+	ErrCodes_SpaceNotInCache ErrCodes = 3
+	ErrCodes_ErrorOffset     ErrCodes = 100
 )
 
 var ErrCodes_name = map[int32]string{
 	0:   "Unexpected",
 	1:   "SpaceMissing",
 	2:   "SpaceExists",
+	3:   "SpaceNotInCache",
 	100: "ErrorOffset",
 }
 
 var ErrCodes_value = map[string]int32{
-	"Unexpected":   0,
+	"Unexpected":      0,
-	"SpaceMissing": 1,
+	"SpaceMissing":    1,
-	"SpaceExists":  2,
+	"SpaceExists":     2,
-	"ErrorOffset":  100,
+	"SpaceNotInCache": 3,
+	"ErrorOffset":     100,
 }
 
 func (x ErrCodes) String() string {
@@ -1071,63 +1074,64 @@ func init() {
 }
 
 var fileDescriptor_80e49f1f4ac27799 = []byte{
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+	0x3d, 0x11, 0x5c, 0x69, 0xa9, 0xf9, 0x1c, 0x9c, 0xfc, 0xad, 0x9c, 0x62, 0x82, 0x0a, 0x5b, 0xee,
-	0x3f, 0xeb, 0xb0, 0x86, 0xfb, 0x93, 0x1d, 0xd8, 0xfe, 0x95, 0xc7, 0x2b, 0xa4, 0x23, 0xf0, 0xea,
+	0xe3, 0x59, 0xc3, 0xfd, 0xa2, 0x43, 0x57, 0xc2, 0x9f, 0xed, 0xc0, 0xf6, 0x2f, 0x2c, 0x59, 0xa0,
-	0x8e, 0x1b, 0xef, 0xe0, 0x13, 0xb8, 0xd3, 0xc8, 0x3f, 0x13, 0x3c, 0x51, 0x0b, 0xa9, 0xcd, 0x12,
+	0x3f, 0x04, 0xa7, 0x19, 0xb8, 0xf1, 0x0e, 0x3e, 0x86, 0x7b, 0x2b, 0xf5, 0x27, 0x9c, 0xa5, 0x72,
-	0x86, 0x36, 0x24, 0x9c, 0x86, 0x19, 0xaf, 0xf4, 0x58, 0x4d, 0x43, 0xff, 0x70, 0xc0, 0x2b, 0x82,
+	0x26, 0x94, 0xbe, 0x84, 0x91, 0x49, 0x89, 0x82, 0x28, 0xd7, 0x95, 0x1e, 0x6d, 0x58, 0xfc, 0xdf,
-	0x4e, 0xb8, 0xe6, 0xe4, 0x53, 0xd8, 0x09, 0xb2, 0xe2, 0x73, 0x16, 0xba, 0x77, 0xf5, 0xf1, 0x5c,
+	0x2d, 0x70, 0xca, 0xa4, 0x53, 0xa6, 0x18, 0xf9, 0x04, 0x76, 0xc2, 0x9c, 0x7c, 0xa1, 0x42, 0x0f,
-	0xe9, 0x91, 0x15, 0xfe, 0x86, 0xc4, 0x55, 0x9e, 0xd7, 0x8e, 0xa6, 0x49, 0xe2, 0xad, 0xf5, 0xb1,
+	0xd6, 0x1f, 0xcf, 0x5a, 0x8f, 0xb4, 0x8c, 0xd7, 0x22, 0x2e, 0x8b, 0xba, 0x66, 0x34, 0xab, 0x22,
-	0x32, 0xe2, 0xc3, 0x6f, 0x60, 0x77, 0x92, 0xa6, 0xc7, 0x32, 0x44, 0x45, 0xfa, 0x00, 0xdf, 0x09,
+	0xde, 0xca, 0x8f, 0x56, 0x19, 0x1f, 0x84, 0xb0, 0x3b, 0xce, 0xb2, 0x13, 0x11, 0xa1, 0x24, 0x7d,
-	0x3c, 0x4f, 0x30, 0xd0, 0x18, 0x0e, 0x3a, 0x64, 0x90, 0xbf, 0xce, 0xe7, 0x91, 0x52, 0x91, 0x98,
+	0x80, 0x6f, 0x39, 0x5e, 0xa4, 0x18, 0x2a, 0x8c, 0xdc, 0x0e, 0x71, 0x8b, 0xd7, 0xf9, 0x32, 0x96,
-	0x0f, 0x1c, 0x72, 0x2b, 0xdf, 0xd5, 0xc9, 0x79, 0xa4, 0xb4, 0x1a, 0xb8, 0x46, 0x31, 0x49, 0x53,
+	0x32, 0xe6, 0x53, 0xd7, 0x22, 0xfb, 0xc5, 0x5d, 0x1d, 0x5f, 0xc4, 0x52, 0x49, 0xd7, 0x26, 0x77,
-	0x99, 0x9e, 0x9e, 0x9d, 0x29, 0xd4, 0x83, 0xf0, 0xe8, 0x6f, 0x17, 0x7a, 0x59, 0xce, 0xb5, 0x08,
+	0x61, 0xdf, 0x18, 0xbe, 0x16, 0x2a, 0xe0, 0x27, 0x2c, 0x9c, 0xa1, 0xbb, 0xa5, 0xa3, 0xc6, 0x59,
-	0xc8, 0x31, 0xec, 0x16, 0x14, 0x4a, 0x86, 0xad, 0xbc, 0x6a, 0x09, 0x66, 0x78, 0xb7, 0x9d, 0x73,
+	0x26, 0xb2, 0xb3, 0xf3, 0x73, 0x89, 0xca, 0x8d, 0x8e, 0xff, 0xb2, 0xa1, 0x97, 0x13, 0x59, 0xf2,
-	0x33, 0x62, 0x79, 0x9a, 0x23, 0x1a, 0x9a, 0x22, 0x77, 0x37, 0x48, 0xa5, 0xe2, 0xc0, 0xe1, 0x41,
+	0x90, 0x9c, 0xc0, 0x6e, 0xa9, 0xab, 0x64, 0xd0, 0x2a, 0xb6, 0x46, 0x75, 0x06, 0xf7, 0xdb, 0x85,
-	0xbb, 0x71, 0x03, 0x27, 0x8e, 0xdb, 0x70, 0x4a, 0xbe, 0x6b, 0xc3, 0xa9, 0x11, 0x1d, 0x83, 0x41,
+	0x38, 0x57, 0x9b, 0xe7, 0x05, 0xa2, 0xd6, 0x2e, 0x72, 0x7f, 0x43, 0x69, 0x6a, 0x61, 0x1c, 0x1c,
-	0x45, 0xfe, 0x33, 0x9d, 0x22, 0x5f, 0x92, 0x83, 0x8d, 0xdd, 0xaa, 0xfd, 0x67, 0x18, 0xbe, 0xd1,
+	0xb6, 0x3b, 0x37, 0x70, 0x92, 0xa4, 0x0d, 0xa7, 0x12, 0xc1, 0x36, 0x9c, 0x86, 0xfa, 0x51, 0x70,
-	0x7a, 0xe8, 0x3c, 0x74, 0x9e, 0x7c, 0xf4, 0xcf, 0xc5, 0xc8, 0x79, 0x7d, 0x31, 0x72, 0xfe, 0xbb,
+	0xeb, 0x2f, 0xc2, 0x44, 0x65, 0xc8, 0xe6, 0xe4, 0x70, 0xe3, 0xc2, 0x35, 0x3e, 0x17, 0x83, 0x1b,
-	0x18, 0x39, 0x7f, 0x5e, 0x8e, 0x3a, 0xaf, 0x2f, 0x47, 0x9d, 0x7f, 0x2f, 0x47, 0x9d, 0x1f, 0x86,
+	0xbd, 0x47, 0xd6, 0x63, 0xeb, 0xd9, 0x87, 0x7f, 0x5f, 0x0e, 0xad, 0xb7, 0x97, 0x43, 0xeb, 0xdf,
-	0xd7, 0xff, 0xa4, 0x78, 0x79, 0xc3, 0xfe, 0x79, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x8b,
+	0xcb, 0xa1, 0xf5, 0xc7, 0xd5, 0xb0, 0xf3, 0xf6, 0x6a, 0xd8, 0xf9, 0xe7, 0x6a, 0xd8, 0xf9, 0x7e,
-	0xf0, 0x9f, 0x14, 0x77, 0x08, 0x00, 0x00,
+	0x70, 0xfd, 0xff, 0x19, 0xaf, 0x6f, 0x99, 0x3f, 0x4f, 0xff, 0x0b, 0x00, 0x00, 0xff, 0xff, 0x24,
+	0x0c, 0x9c, 0xee, 0x8c, 0x08, 0x00, 0x00,
 }
 
 func (m *HeadSyncRange) Marshal() (dAtA []byte, err error) {

etc/configs/node1.yml

@@ -61,7 +61,7 @@ nodes:
         - file
 space:
     gcTTL: 60
-    syncPeriod: 600
+    syncPeriod: 20
 storage:
     path: db/node/1/data
 metric:

etc/configs/node2.yml

@@ -61,7 +61,7 @@ nodes:
         - file
 space:
     gcTTL: 60
-    syncPeriod: 600
+    syncPeriod: 20
 storage:
     path: db/node/2/data
 metric:

etc/configs/node3.yml

@@ -61,7 +61,7 @@ nodes:
         - file
 space:
     gcTTL: 60
-    syncPeriod: 600
+    syncPeriod: 20
 storage:
     path: db/node/3/data
 metric:

node/nodespace/rpchandler.go

@@ -2,6 +2,7 @@ package nodespace
 
 import (
 	"context"
+	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/app/ocache"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace/spacesyncproto"
 )
@@ -54,10 +55,17 @@ func (r *rpcHandler) SpacePush(ctx context.Context, req *spacesyncproto.SpacePus
 	return
 }
 
-func (r *rpcHandler) HeadSync(ctx context.Context, req *spacesyncproto.HeadSyncRequest) (*spacesyncproto.HeadSyncResponse, error) {
+func (r *rpcHandler) HeadSync(ctx context.Context, req *spacesyncproto.HeadSyncRequest) (resp *spacesyncproto.HeadSyncResponse, err error) {
-	sp, err := r.s.GetSpace(ctx, req.SpaceId)
+	sp, err := r.s.GetOrPickSpace(ctx, req.SpaceId)
 	if err != nil {
-		return nil, spacesyncproto.ErrSpaceMissing
+		switch err {
+		case ocache.ErrNotExists:
+			err = spacesyncproto.ErrSpaceNotInCache
+		case spacesyncproto.ErrSpaceMissing:
+		default:
+			err = spacesyncproto.ErrUnexpected
+		}
+		return
 	}
 	return sp.SpaceSyncRpc().HeadSync(ctx, req)
 }

node/nodespace/service.go

@@ -8,7 +8,10 @@ import (
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace/spacestorage"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace/spacesyncproto"
+	peer "github.com/anytypeio/go-anytype-infrastructure-experiments/common/net/peer"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/net/rpc/server"
+	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/nodeconf"
+	"golang.org/x/exp/slices"
 	"time"
 )
 
@@ -22,6 +25,7 @@ func New() Service {
 
 type Service interface {
 	GetSpace(ctx context.Context, id string) (commonspace.Space, error)
+	GetOrPickSpace(ctx context.Context, id string) (commonspace.Space, error)
 	app.ComponentRunnable
 }
 
@@ -29,12 +33,14 @@ type service struct {
 	conf                 commonspace.Config
 	spaceCache           ocache.OCache
 	commonSpace          commonspace.SpaceService
+	confService          nodeconf.Service
 	spaceStorageProvider spacestorage.SpaceStorageProvider
 }
 
 func (s *service) Init(a *app.App) (err error) {
 	s.conf = a.MustComponent("config").(commonspace.ConfigGetter).GetSpace()
 	s.commonSpace = a.MustComponent(commonspace.CName).(commonspace.SpaceService)
+	s.confService = a.MustComponent(nodeconf.CName).(nodeconf.Service)
 	s.spaceStorageProvider = a.MustComponent(spacestorage.CName).(spacestorage.SpaceStorageProvider)
 	s.spaceCache = ocache.New(
 		s.loadSpace,
@@ -61,6 +67,37 @@ func (s *service) GetSpace(ctx context.Context, id string) (commonspace.Space, e
 	return v.(commonspace.Space), nil
 }
 
+func (s *service) GetOrPickSpace(ctx context.Context, id string) (sp commonspace.Space, err error) {
+	var v ocache.Object
+	peerId, err := peer.CtxPeerId(ctx)
+	if err != nil {
+		return
+	}
+	// if we are getting request from our fellow node
+	// don't try to wake the space, otherwise it can be possible
+	// that node would be waking up infinitely, depending on
+	// OCache ttl and HeadSync period
+	if slices.Contains(s.confService.GetLast().NodeIds(id), peerId) {
+		v, err = s.spaceCache.Pick(ctx, id)
+		if err != nil {
+			// safely checking that we don't have the space storage
+			// this should not open the database in case of node
+			if !s.spaceStorageProvider.SpaceExists(id) {
+				err = spacesyncproto.ErrSpaceMissing
+			}
+			return
+		}
+	} else {
+		// if the request is from the client it is safe to wake up the node
+		v, err = s.spaceCache.Get(ctx, id)
+		if err != nil {
+			return
+		}
+	}
+	sp = v.(commonspace.Space)
+	return
+}
+
 func (s *service) loadSpace(ctx context.Context, id string) (value ocache.Object, err error) {
 	cc, err := s.commonSpace.NewSpace(ctx, id)
 	if err != nil {

node/storage/storageservice.go

@@ -4,6 +4,7 @@ import (
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/app"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonspace/spacestorage"
 	"os"
+	"path"
 )
 
 type storageService struct {
@@ -33,6 +34,14 @@ func (s *storageService) SpaceStorage(id string) (spacestorage.SpaceStorage, err
 	return newSpaceStorage(s.rootPath, id)
 }
 
+func (s *storageService) SpaceExists(id string) bool {
+	dbPath := path.Join(s.rootPath, id)
+	if _, err := os.Stat(dbPath); err != nil {
+		return false
+	}
+	return true
+}
+
 func (s *storageService) CreateSpaceStorage(payload spacestorage.SpaceStorageCreatePayload) (spacestorage.SpaceStorage, error) {
 	return createSpaceStorage(s.rootPath, payload)
 }