diff --git a/weed/pb/seaweed.pb.go b/weed/pb/seaweed.pb.go index 19bbb39d8..51e115b56 100644 --- a/weed/pb/seaweed.pb.go +++ b/weed/pb/seaweed.pb.go @@ -118,6 +118,7 @@ func (m *Heartbeat) GetVolumes() []*VolumeInformationMessage { 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"` + Leader string `protobuf:"bytes,3,opt,name=leader" json:"leader,omitempty"` } func (m *HeartbeatResponse) Reset() { *m = HeartbeatResponse{} } @@ -139,6 +140,13 @@ func (m *HeartbeatResponse) GetSecretKey() string { return "" } +func (m *HeartbeatResponse) GetLeader() string { + if m != nil { + return m.Leader + } + return "" +} + type VolumeInformationMessage struct { Id uint32 `protobuf:"varint,1,opt,name=id" json:"id,omitempty"` Size uint64 `protobuf:"varint,2,opt,name=size" json:"size,omitempty"` @@ -340,36 +348,37 @@ var 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0x30, 0xd9, 0xf8, 0x97, 0xcf, 0xde, 0xc1, 0x7c, 0x83, 0x55, 0x71, 0x78, 0xf2, 0x73, + 0x17, 0xff, 0xbe, 0x7d, 0xfc, 0xf0, 0xaf, 0x76, 0x08, 0x7a, 0x75, 0x2f, 0x09, 0x5e, 0x07, 0xd9, + 0x98, 0xfe, 0x37, 0x6f, 0x7e, 0x07, 0x00, 0x00, 0xff, 0xff, 0x7c, 0xda, 0x3f, 0x9c, 0x48, 0x03, + 0x00, 0x00, } diff --git a/weed/pb/seaweed.proto b/weed/pb/seaweed.proto index b796b9c26..0eb55b295 100644 --- a/weed/pb/seaweed.proto +++ b/weed/pb/seaweed.proto @@ -24,6 +24,7 @@ message Heartbeat { message HeartbeatResponse { uint64 volumeSizeLimit = 1; string secretKey = 2; + string leader = 3; } message VolumeInformationMessage { diff --git a/weed/server/master_grpc_server.go b/weed/server/master_grpc_server.go index b5cbd85b7..8a9117b1e 100644 --- a/weed/server/master_grpc_server.go +++ b/weed/server/master_grpc_server.go @@ -65,5 +65,17 @@ func (ms MasterServer) SendHeartbeat(stream pb.Seaweed_SendHeartbeatServer) erro } return err } + + if !t.IsLeader() { + newLeader, err := t.Leader() + if err == nil { + if err := stream.Send(&pb.HeartbeatResponse{ + Leader: newLeader, + }); err != nil { + return err + } + } + } + } } diff --git a/weed/server/volume_grpc_client.go b/weed/server/volume_grpc_client.go index d2d6f1a91..ee6f6095c 100644 --- a/weed/server/volume_grpc_client.go +++ b/weed/server/volume_grpc_client.go @@ -65,6 +65,11 @@ func (vs *VolumeServer) doHeartbeat(sleepInterval time.Duration) error { } vs.store.VolumeSizeLimit = in.GetVolumeSizeLimit() vs.guard.SecretKey = security.Secret(in.GetSecretKey()) + if in.GetLeader() != "" && masterNode != in.GetLeader() { + vs.masterNodes.SetPossibleLeader(in.GetLeader()) + doneChan <- nil + return + } } }() diff --git a/weed/storage/store.go b/weed/storage/store.go index ade323c2e..f70ebe0ee 100644 --- a/weed/storage/store.go +++ b/weed/storage/store.go @@ -16,8 +16,9 @@ const ( ) type MasterNodes struct { - nodes []string - leader string + nodes []string + leader string + possibleLeader string } func (mn *MasterNodes) String() string { @@ -34,6 +35,10 @@ func (mn *MasterNodes) Reset() { glog.V(0).Infof("Resetting master nodes: %v", mn) } } +func (mn *MasterNodes) SetPossibleLeader(possibleLeader string) { + // TODO try to check this leader first + mn.possibleLeader = possibleLeader +} func (mn *MasterNodes) FindMaster() (leader string, err error) { if len(mn.nodes) == 0 { return "", errors.New("No master node found!")