instant notification of new volumes added or deleted

7 files changed, 170 insertions, 137 deletions

diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index d3f14a7bf..ecce7ef76 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -203,7 +203,6 @@ func (m *Entry) GetAttributes() *FuseAttributes {
 }
 
 type EventNotification struct {
-	Name     string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
 	OldEntry *Entry `protobuf:"bytes,2,opt,name=old_entry,json=oldEntry" json:"old_entry,omitempty"`
 	NewEntry *Entry `protobuf:"bytes,3,opt,name=new_entry,json=newEntry" json:"new_entry,omitempty"`
 }
@@ -213,13 +212,6 @@ func (m *EventNotification) String() string            { return proto.CompactTex
 func (*EventNotification) ProtoMessage()               {}
 func (*EventNotification) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
 
-func (m *EventNotification) GetName() string {
-	if m != nil {
-		return m.Name
-	}
-	return ""
-}
-
 func (m *EventNotification) GetOldEntry() *Entry {
 	if m != nil {
 		return m.OldEntry
@@ -1122,13 +1114,13 @@ var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("filer.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
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+	// 1152 bytes of a gzipped FileDescriptorProto
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@@ -1144,56 +1136,55 @@ var fileDescriptor0 = []byte{
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 }
diff --git a/weed/pb/master_pb/seaweed.pb.go b/weed/pb/master_pb/seaweed.pb.go
index 15a72f0bf..245773a59 100644
--- a/weed/pb/master_pb/seaweed.pb.go
+++ b/weed/pb/master_pb/seaweed.pb.go
@@ -49,6 +49,9 @@ type Heartbeat struct {
 	Rack           string                      `protobuf:"bytes,7,opt,name=rack" json:"rack,omitempty"`
 	AdminPort      uint32                      `protobuf:"varint,8,opt,name=admin_port,json=adminPort" json:"admin_port,omitempty"`
 	Volumes        []*VolumeInformationMessage `protobuf:"bytes,9,rep,name=volumes" json:"volumes,omitempty"`
+	// delta volume ids
+	NewVids     []uint32 `protobuf:"varint,10,rep,packed,name=new_vids,json=newVids" json:"new_vids,omitempty"`
+	DeletedVids []uint32 `protobuf:"varint,11,rep,packed,name=deleted_vids,json=deletedVids" json:"deleted_vids,omitempty"`
 }
 
 func (m *Heartbeat) Reset()                    { *m = Heartbeat{} }
@@ -119,6 +122,20 @@ func (m *Heartbeat) GetVolumes() []*VolumeInformationMessage {
 	return nil
 }
 
+func (m *Heartbeat) GetNewVids() []uint32 {
+	if m != nil {
+		return m.NewVids
+	}
+	return nil
+}
+
+func (m *Heartbeat) GetDeletedVids() []uint32 {
+	if m != nil {
+		return m.DeletedVids
+	}
+	return nil
+}
+
 type HeartbeatResponse struct {
 	VolumeSizeLimit uint64 `protobuf:"varint,1,opt,name=volumeSizeLimit" json:"volumeSizeLimit,omitempty"`
 	SecretKey       string `protobuf:"bytes,2,opt,name=secretKey" json:"secretKey,omitempty"`
@@ -536,50 +553,51 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("seaweed.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
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+	// 726 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x7c, 0x54, 0xc1, 0x6e, 0xdb, 0x38,
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+	0x10, 0x98, 0x68, 0x4c, 0xc9, 0xe1, 0x5a, 0xd2, 0x33, 0xe4, 0xec, 0xef, 0x3d, 0xd9, 0x12, 0x0d,
+	0x23, 0xd5, 0x8d, 0xf3, 0xae, 0x5d, 0xad, 0x2f, 0xbf, 0x05, 0x00, 0x00, 0xff, 0xff, 0x97, 0xbc,
+	0x58, 0x26, 0x6b, 0x05, 0x00, 0x00,
 }
diff --git a/weed/pb/seaweed.proto b/weed/pb/seaweed.proto
index e7b757bd8..bc376f75b 100644
--- a/weed/pb/seaweed.proto
+++ b/weed/pb/seaweed.proto
@@ -23,6 +23,9 @@ message Heartbeat {
     string rack = 7;
     uint32 admin_port = 8;
     repeated VolumeInformationMessage volumes = 9;
+    // delta volume ids
+    repeated uint32 new_vids = 10;
+    repeated uint32 deleted_vids = 11;
 }
 
 message HeartbeatResponse {
diff --git a/weed/server/master_grpc_server.go b/weed/server/master_grpc_server.go
index e12449819..d2c86598e 100644
--- a/weed/server/master_grpc_server.go
+++ b/weed/server/master_grpc_server.go
@@ -72,17 +72,24 @@ func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServ
 			}
 		}
 
-		newVolumes, deletedVolumes := t.SyncDataNodeRegistration(heartbeat.Volumes, dn)
-
 		message := &master_pb.VolumeLocation{
 			Url:       dn.Url(),
 			PublicUrl: dn.PublicUrl,
 		}
-		for _, v := range newVolumes {
-			message.NewVids = append(message.NewVids, uint32(v.Id))
-		}
-		for _, v := range deletedVolumes {
-			message.DeletedVids = append(message.DeletedVids, uint32(v.Id))
+		if len(heartbeat.NewVids) > 0 || len(heartbeat.DeletedVids) > 0 {
+			// process delta volume ids if exists for fast volume id updates
+			message.NewVids = append(message.NewVids, heartbeat.NewVids...)
+			message.DeletedVids = append(message.DeletedVids, heartbeat.DeletedVids...)
+		} else {
+			// process heartbeat.Volumes
+			newVolumes, deletedVolumes := t.SyncDataNodeRegistration(heartbeat.Volumes, dn)
+
+			for _, v := range newVolumes {
+				message.NewVids = append(message.NewVids, uint32(v.Id))
+			}
+			for _, v := range deletedVolumes {
+				message.DeletedVids = append(message.DeletedVids, uint32(v.Id))
+			}
 		}
 
 		if len(message.NewVids) > 0 || len(message.DeletedVids) > 0 {
@@ -169,6 +176,7 @@ func (ms *MasterServer) KeepConnected(stream master_pb.Seaweed_KeepConnectedServ
 		select {
 		case message := <-messageChan:
 			if err := stream.Send(message); err != nil {
+				glog.V(0).Infof("=> client %v: %+v", clientName, message)
 				return err
 			}
 		case <-stopChan:
diff --git a/weed/server/volume_grpc_client.go b/weed/server/volume_grpc_client.go
index de6fa23c7..219948936 100644
--- a/weed/server/volume_grpc_client.go
+++ b/weed/server/volume_grpc_client.go
@@ -89,6 +89,22 @@ func (vs *VolumeServer) doHeartbeat(masterNode string, sleepInterval time.Durati
 
 	for {
 		select {
+		case vid := <-vs.store.NewVolumeIdChan:
+			deltaBeat := &master_pb.Heartbeat{
+				NewVids: []uint32{uint32(vid)},
+			}
+			if err = stream.Send(deltaBeat); err != nil {
+				glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterNode, err)
+				return "", err
+			}
+		case vid := <-vs.store.DeletedVolumeIdChan:
+			deltaBeat := &master_pb.Heartbeat{
+				DeletedVids: []uint32{uint32(vid)},
+			}
+			if err = stream.Send(deltaBeat); err != nil {
+				glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterNode, err)
+				return "", err
+			}
 		case <-tickChan:
 			if err = stream.Send(vs.store.CollectHeartbeat()); err != nil {
 				glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterNode, err)
diff --git a/weed/storage/store.go b/weed/storage/store.go
index ac125ef4b..aea4670ad 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -18,16 +18,18 @@ const (
  * A VolumeServer contains one Store
  */
 type Store struct {
-	Ip              string
-	Port            int
-	PublicUrl       string
-	Locations       []*DiskLocation
-	dataCenter      string //optional informaton, overwriting master setting if exists
-	rack            string //optional information, overwriting master setting if exists
-	connected       bool
-	VolumeSizeLimit uint64 //read from the master
-	Client          master_pb.Seaweed_SendHeartbeatClient
-	NeedleMapType   NeedleMapType
+	Ip                  string
+	Port                int
+	PublicUrl           string
+	Locations           []*DiskLocation
+	dataCenter          string //optional informaton, overwriting master setting if exists
+	rack                string //optional information, overwriting master setting if exists
+	connected           bool
+	VolumeSizeLimit     uint64 //read from the master
+	Client              master_pb.Seaweed_SendHeartbeatClient
+	NeedleMapType       NeedleMapType
+	NewVolumeIdChan     chan VolumeId
+	DeletedVolumeIdChan chan VolumeId
 }
 
 func (s *Store) String() (str string) {
@@ -43,6 +45,8 @@ func NewStore(port int, ip, publicUrl string, dirnames []string, maxVolumeCounts
 		location.loadExistingVolumes(needleMapKind)
 		s.Locations = append(s.Locations, location)
 	}
+	s.NewVolumeIdChan = make(chan VolumeId, 3)
+	s.DeletedVolumeIdChan = make(chan VolumeId, 3)
 	return
 }
 func (s *Store) AddVolume(volumeListString string, collection string, needleMapKind NeedleMapType, replicaPlacement string, ttlString string, preallocate int64) error {
@@ -87,6 +91,7 @@ func (s *Store) DeleteCollection(collection string) (e error) {
 		if e != nil {
 			return
 		}
+		// let the heartbeat send the list of volumes, instead of sending the deleted volume ids to DeletedVolumeIdChan
 	}
 	return
 }
@@ -119,6 +124,7 @@ func (s *Store) addVolume(vid VolumeId, collection string, needleMapKind NeedleM
 			location.Directory, vid, collection, replicaPlacement, ttl)
 		if volume, err := NewVolume(location.Directory, collection, vid, needleMapKind, replicaPlacement, ttl, preallocate); err == nil {
 			location.SetVolume(vid, volume)
+			s.NewVolumeIdChan <- vid
 			return nil
 		} else {
 			return err
@@ -232,14 +238,6 @@ func (s *Store) Write(i VolumeId, n *Needle) (size uint32, err error) {
 	return
 }
 
-func (s *Store) updateMaster() {
-	if s.Client != nil {
-		if e := s.Client.Send(s.CollectHeartbeat()); e != nil {
-			glog.V(0).Infoln("error when reporting size:", e)
-		}
-	}
-}
-
 func (s *Store) Delete(i VolumeId, n *Needle) (uint32, error) {
 	if v := s.findVolume(i); v != nil && !v.readOnly {
 		return v.deleteNeedle(n)
@@ -265,7 +263,7 @@ func (s *Store) HasVolume(i VolumeId) bool {
 func (s *Store) MountVolume(i VolumeId) error {
 	for _, location := range s.Locations {
 		if found := location.LoadVolume(i, s.NeedleMapType); found == true {
-			s.updateMaster()
+			s.NewVolumeIdChan <- VolumeId(i)
 			return nil
 		}
 	}
@@ -276,7 +274,7 @@ func (s *Store) MountVolume(i VolumeId) error {
 func (s *Store) UnmountVolume(i VolumeId) error {
 	for _, location := range s.Locations {
 		if err := location.UnloadVolume(i); err == nil {
-			s.updateMaster()
+			s.DeletedVolumeIdChan <- VolumeId(i)
 			return nil
 		}
 	}
@@ -287,7 +285,7 @@ func (s *Store) UnmountVolume(i VolumeId) error {
 func (s *Store) DeleteVolume(i VolumeId) error {
 	for _, location := range s.Locations {
 		if error := location.deleteVolumeById(i); error == nil {
-			s.updateMaster()
+			s.DeletedVolumeIdChan <- VolumeId(i)
 			return nil
 		}
 	}
diff --git a/weed/wdclient/masterclient.go b/weed/wdclient/masterclient.go
index 6b09e4a90..df0adbd18 100644
--- a/weed/wdclient/masterclient.go
+++ b/weed/wdclient/masterclient.go
@@ -67,7 +67,6 @@ func (mc *MasterClient) tryAllMasters() {
 					glog.V(0).Infof("failed to receive from %s: %v", master, err)
 					return err
 				} else {
-					glog.V(0).Infof("volume location: %+v", volumeLocation)
 					loc := Location{
 						Url:       volumeLocation.Url,
 						PublicUrl: volumeLocation.PublicUrl,