diff --git a/weed/pb/master.proto b/weed/pb/master.proto index 7dcab40db..9cf46ab92 100644 --- a/weed/pb/master.proto +++ b/weed/pb/master.proto @@ -7,7 +7,7 @@ package master_pb; service Seaweed { rpc SendHeartbeat (stream Heartbeat) returns (stream HeartbeatResponse) { } - rpc KeepConnected (stream ClientListenRequest) returns (stream VolumeLocation) { + rpc KeepConnected (stream KeepConnectedRequest) returns (stream VolumeLocation) { } rpc LookupVolume (LookupVolumeRequest) returns (LookupVolumeResponse) { } @@ -101,7 +101,7 @@ message SuperBlockExtra { ErasureCoding erasure_coding = 1; } -message ClientListenRequest { +message KeepConnectedRequest { string name = 1; } @@ -110,6 +110,7 @@ message VolumeLocation { string public_url = 2; repeated uint32 new_vids = 3; repeated uint32 deleted_vids = 4; + string leader = 5; // optional when leader is not itself } message LookupVolumeRequest { diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go index cc1766fe8..f2d9420f0 100644 --- a/weed/pb/master_pb/master.pb.go +++ b/weed/pb/master_pb/master.pb.go @@ -16,7 +16,7 @@ It has these top-level messages: VolumeEcShardInformationMessage Empty SuperBlockExtra - ClientListenRequest + KeepConnectedRequest VolumeLocation LookupVolumeRequest LookupVolumeResponse @@ -485,16 +485,16 @@ func (m *SuperBlockExtra_ErasureCoding) GetVolumeIds() []uint32 { return nil } -type ClientListenRequest struct { +type KeepConnectedRequest struct { Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"` } -func (m *ClientListenRequest) Reset() { *m = ClientListenRequest{} } -func (m *ClientListenRequest) String() string { return proto.CompactTextString(m) } -func (*ClientListenRequest) ProtoMessage() {} -func (*ClientListenRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} } +func (m *KeepConnectedRequest) Reset() { *m = KeepConnectedRequest{} } +func (m *KeepConnectedRequest) String() string { return proto.CompactTextString(m) } +func (*KeepConnectedRequest) ProtoMessage() {} +func (*KeepConnectedRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} } -func (m *ClientListenRequest) GetName() string { +func (m *KeepConnectedRequest) GetName() string { if m != nil { return m.Name } @@ -506,6 +506,7 @@ type VolumeLocation struct { PublicUrl string `protobuf:"bytes,2,opt,name=public_url,json=publicUrl" json:"public_url,omitempty"` NewVids []uint32 `protobuf:"varint,3,rep,packed,name=new_vids,json=newVids" json:"new_vids,omitempty"` DeletedVids []uint32 `protobuf:"varint,4,rep,packed,name=deleted_vids,json=deletedVids" json:"deleted_vids,omitempty"` + Leader string `protobuf:"bytes,5,opt,name=leader" json:"leader,omitempty"` } func (m *VolumeLocation) Reset() { *m = VolumeLocation{} } @@ -541,6 +542,13 @@ func (m *VolumeLocation) GetDeletedVids() []uint32 { return nil } +func (m *VolumeLocation) GetLeader() string { + if m != nil { + return m.Leader + } + return "" +} + type LookupVolumeRequest struct { VolumeIds []string `protobuf:"bytes,1,rep,name=volume_ids,json=volumeIds" json:"volume_ids,omitempty"` Collection string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"` @@ -1327,7 +1335,7 @@ func init() { proto.RegisterType((*Empty)(nil), "master_pb.Empty") proto.RegisterType((*SuperBlockExtra)(nil), "master_pb.SuperBlockExtra") proto.RegisterType((*SuperBlockExtra_ErasureCoding)(nil), "master_pb.SuperBlockExtra.ErasureCoding") - proto.RegisterType((*ClientListenRequest)(nil), "master_pb.ClientListenRequest") + proto.RegisterType((*KeepConnectedRequest)(nil), "master_pb.KeepConnectedRequest") proto.RegisterType((*VolumeLocation)(nil), "master_pb.VolumeLocation") proto.RegisterType((*LookupVolumeRequest)(nil), "master_pb.LookupVolumeRequest") proto.RegisterType((*LookupVolumeResponse)(nil), "master_pb.LookupVolumeResponse") @@ -1428,7 +1436,7 @@ func (c *seaweedClient) KeepConnected(ctx context.Context, opts ...grpc.CallOpti } type Seaweed_KeepConnectedClient interface { - Send(*ClientListenRequest) error + Send(*KeepConnectedRequest) error Recv() (*VolumeLocation, error) grpc.ClientStream } @@ -1437,7 +1445,7 @@ type seaweedKeepConnectedClient struct { grpc.ClientStream } -func (x *seaweedKeepConnectedClient) Send(m *ClientListenRequest) error { +func (x *seaweedKeepConnectedClient) Send(m *KeepConnectedRequest) error { return x.ClientStream.SendMsg(m) } @@ -1572,7 +1580,7 @@ func _Seaweed_KeepConnected_Handler(srv interface{}, stream grpc.ServerStream) e type Seaweed_KeepConnectedServer interface { Send(*VolumeLocation) error - Recv() (*ClientListenRequest, error) + Recv() (*KeepConnectedRequest, error) grpc.ServerStream } @@ -1584,8 +1592,8 @@ func (x *seaweedKeepConnectedServer) Send(m *VolumeLocation) error { return x.ServerStream.SendMsg(m) } -func (x *seaweedKeepConnectedServer) Recv() (*ClientListenRequest, error) { - m := new(ClientListenRequest) +func (x *seaweedKeepConnectedServer) Recv() (*KeepConnectedRequest, error) { + m := new(KeepConnectedRequest) if err := x.ServerStream.RecvMsg(m); err != nil { return nil, err } @@ -1793,123 +1801,124 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{ func init() { proto.RegisterFile("master.proto", fileDescriptor0) } var fileDescriptor0 = []byte{ - // 1888 bytes of a gzipped FileDescriptorProto - 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xd4, 0x58, 0xcd, 0x6f, 0x1c, 0x49, - 0x15, 0x4f, 0xcf, 0x8c, 0xc7, 0x33, 0x6f, 0x3e, 0x3c, 0x53, 0x76, 0xbc, 0x93, 0x59, 0x92, 0x4c, - 0x7a, 0x91, 0xd6, 0x09, 0x8b, 0x59, 0xb2, 0x2b, 0x81, 0x04, 0x68, 0x95, 0x38, 0xde, 0xc5, 0xca, - 0xc7, 0x3a, 0x3d, 0x21, 0x48, 0x48, 0xa8, 0xa9, 0xe9, 0x2e, 0xdb, 0x25, 0xf7, 0x74, 0x37, 0x5d, - 0x35, 0x8e, 0x67, 0x39, 0x70, 0x80, 0x1b, 0x12, 0x17, 0xce, 0xdc, 0xf9, 0x1b, 0x38, 0x70, 0xe1, - 0xc8, 0x9d, 0x3b, 0xff, 0x02, 0x57, 0x84, 0xb4, 0xaa, 0xaf, 0xee, 0xea, 0x99, 0xb1, 0x1d, 0xaf, - 0xb4, 0x87, 0xdc, 0xaa, 0xdf, 0x7b, 0xf5, 0xde, 0xab, 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0x25, 0x10, 0x56, 0x17, 0x05, 0xf7, 0x06, 0x4a, 0x60, 0x7b, 0x75, 0xb6, + 0x21, 0xfb, 0xa7, 0x8e, 0x4b, 0x53, 0x76, 0xf8, 0xd1, 0x1b, 0x48, 0x9a, 0x0d, 0x27, 0x75, 0xf9, + 0xaf, 0xc0, 0xa7, 0xdf, 0x04, 0x00, 0x00, 0xff, 0xff, 0xe6, 0xab, 0xab, 0x3b, 0x25, 0x18, 0x00, + 0x00, } diff --git a/weed/server/master_grpc_server.go b/weed/server/master_grpc_server.go index e0d1fd174..9e1b2e427 100644 --- a/weed/server/master_grpc_server.go +++ b/weed/server/master_grpc_server.go @@ -176,7 +176,7 @@ func (ms *MasterServer) KeepConnected(stream master_pb.Seaweed_KeepConnectedServ } if !ms.Topo.IsLeader() { - return raft.NotLeaderError + return ms.informNewLeader(stream) } // remember client address @@ -236,7 +236,7 @@ func (ms *MasterServer) KeepConnected(stream master_pb.Seaweed_KeepConnectedServ } case <-ticker.C: if !ms.Topo.IsLeader() { - return raft.NotLeaderError + return ms.informNewLeader(stream) } case <-stopChan: return nil @@ -245,3 +245,17 @@ func (ms *MasterServer) KeepConnected(stream master_pb.Seaweed_KeepConnectedServ return nil } + +func (ms *MasterServer) informNewLeader(stream master_pb.Seaweed_KeepConnectedServer) error { + leader, err := ms.Topo.Leader() + if err != nil { + glog.Error("topo leader: %v", err) + return raft.NotLeaderError + } + if err := stream.Send(&master_pb.VolumeLocation{ + Leader: leader, + }); err != nil { + return err + } + return nil +} diff --git a/weed/wdclient/masterclient.go b/weed/wdclient/masterclient.go index e16356e9d..8a7866bd7 100644 --- a/weed/wdclient/masterclient.go +++ b/weed/wdclient/masterclient.go @@ -51,54 +51,72 @@ func (mc *MasterClient) KeepConnectedToMaster() { } func (mc *MasterClient) tryAllMasters() { + nextHintedLeader := "" for _, master := range mc.masters { - glog.V(1).Infof("%s Connecting to master %v", mc.name, master) - gprcErr := withMasterClient(context.Background(), master, mc.grpcDialOption, func(ctx context.Context, client master_pb.SeaweedClient) error { - stream, err := client.KeepConnected(ctx) + nextHintedLeader = mc.tryConnectToMaster(master) + for nextHintedLeader != "" { + nextHintedLeader = mc.tryConnectToMaster(nextHintedLeader) + } + + mc.currentMaster = "" + } +} + +func (mc *MasterClient) tryConnectToMaster(master string) (nextHintedLeader string) { + glog.V(1).Infof("%s Connecting to master %v", mc.name, master) + gprcErr := withMasterClient(context.Background(), master, mc.grpcDialOption, func(ctx context.Context, client master_pb.SeaweedClient) error { + + stream, err := client.KeepConnected(ctx) + if err != nil { + glog.V(0).Infof("%s failed to keep connected to %s: %v", mc.name, master, err) + return err + } + + if err = stream.Send(&master_pb.KeepConnectedRequest{Name: mc.name}); err != nil { + glog.V(0).Infof("%s failed to send to %s: %v", mc.name, master, err) + return err + } + + if mc.currentMaster == "" { + glog.V(1).Infof("%s Connected to %v", mc.name, master) + mc.currentMaster = master + } + + for { + volumeLocation, err := stream.Recv() if err != nil { - glog.V(0).Infof("%s failed to keep connected to %s: %v", mc.name, master, err) + glog.V(0).Infof("%s failed to receive from %s: %v", mc.name, master, err) return err } - if err = stream.Send(&master_pb.ClientListenRequest{Name: mc.name}); err != nil { - glog.V(0).Infof("%s failed to send to %s: %v", mc.name, master, err) - return err + // maybe the leader is changed + if volumeLocation.Leader != "" { + glog.V(1).Infof("redirected to leader %v", volumeLocation.Leader) + nextHintedLeader = volumeLocation.Leader + return nil } - if mc.currentMaster == "" { - glog.V(1).Infof("%s Connected to %v", mc.name, master) - mc.currentMaster = master + // process new volume location + loc := Location{ + Url: volumeLocation.Url, + PublicUrl: volumeLocation.PublicUrl, } - - for { - if volumeLocation, err := stream.Recv(); err != nil { - glog.V(0).Infof("%s failed to receive from %s: %v", mc.name, master, err) - return err - } else { - loc := Location{ - Url: volumeLocation.Url, - PublicUrl: volumeLocation.PublicUrl, - } - for _, newVid := range volumeLocation.NewVids { - glog.V(1).Infof("%s: %s adds volume %d", mc.name, loc.Url, newVid) - mc.addLocation(newVid, loc) - } - for _, deletedVid := range volumeLocation.DeletedVids { - glog.V(1).Infof("%s: %s removes volume %d", mc.name, loc.Url, deletedVid) - mc.deleteLocation(deletedVid, loc) - } - } + for _, newVid := range volumeLocation.NewVids { + glog.V(1).Infof("%s: %s adds volume %d", mc.name, loc.Url, newVid) + mc.addLocation(newVid, loc) + } + for _, deletedVid := range volumeLocation.DeletedVids { + glog.V(1).Infof("%s: %s removes volume %d", mc.name, loc.Url, deletedVid) + mc.deleteLocation(deletedVid, loc) } - - }) - - if gprcErr != nil { - glog.V(0).Infof("%s failed to connect with master %v: %v", mc.name, master, gprcErr) } - mc.currentMaster = "" + }) + if gprcErr != nil { + glog.V(0).Infof("%s failed to connect with master %v: %v", mc.name, master, gprcErr) } + return } func withMasterClient(ctx context.Context, master string, grpcDialOption grpc.DialOption, fn func(ctx context.Context, client master_pb.SeaweedClient) error) error {