From 77873b832be692a791c3b17b079a0d14bd317bcd Mon Sep 17 00:00:00 2001 From: Chris Lu Date: Thu, 23 Apr 2020 01:55:44 -0700 Subject: [PATCH] add master side code for cluster wise exclusive lock --- weed/pb/master.proto | 33 ++ weed/pb/master_pb/master.pb.go | 557 +++++++++++++++++------- weed/server/master_grpc_server_admin.go | 107 +++++ weed/server/master_server.go | 3 +- 4 files changed, 549 insertions(+), 151 deletions(-) create mode 100644 weed/server/master_grpc_server_admin.go diff --git a/weed/pb/master.proto b/weed/pb/master.proto index 4310b2602..3e9e3ba41 100644 --- a/weed/pb/master.proto +++ b/weed/pb/master.proto @@ -27,6 +27,13 @@ service Seaweed { } rpc ListMasterClients (ListMasterClientsRequest) returns (ListMasterClientsResponse) { } + rpc LeaseAdminToken (LeaseAdminTokenRequest) returns (LeaseAdminTokenResponse) { + } + rpc ReleaseAdminToken (ReleaseAdminTokenRequest) returns (ReleaseAdminTokenResponse) { + } + rpc VerifyAdminToken (VerifyAdminTokenRequest) returns (VerifyAdminTokenResponse) { + } + } ////////////////////////////////////////////////// @@ -274,3 +281,29 @@ message ListMasterClientsRequest { message ListMasterClientsResponse { repeated string grpc_addresses = 1; } + +message LeaseAdminTokenRequest { + int64 previous_token = 1; + int64 previous_lock_time = 2; +} +message LeaseAdminTokenResponse { + bool is_allowed = 1; + string error = 2; + int64 lock_ts_ns = 3; + int64 token = 4; +} + +message ReleaseAdminTokenRequest { + int64 previous_token = 1; + int64 previous_lock_time = 2; +} +message ReleaseAdminTokenResponse { +} + +message VerifyAdminTokenRequest { + int64 token = 1; + int64 lock_time = 2; +} +message VerifyAdminTokenResponse { + bool is_valid = 1; +} diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go index 95c9533a1..b3fcf531a 100644 --- a/weed/pb/master_pb/master.pb.go +++ b/weed/pb/master_pb/master.pb.go @@ -44,6 +44,12 @@ It has these top-level messages: GetMasterConfigurationResponse ListMasterClientsRequest ListMasterClientsResponse + LeaseAdminTokenRequest + LeaseAdminTokenResponse + ReleaseAdminTokenRequest + ReleaseAdminTokenResponse + VerifyAdminTokenRequest + VerifyAdminTokenResponse */ package master_pb @@ -428,12 +434,10 @@ type VolumeEcShardInformationMessage struct { EcIndexBits uint32 `protobuf:"varint,3,opt,name=ec_index_bits,json=ecIndexBits" json:"ec_index_bits,omitempty"` } -func (m *VolumeEcShardInformationMessage) Reset() { *m = VolumeEcShardInformationMessage{} } -func (m *VolumeEcShardInformationMessage) String() string { return proto.CompactTextString(m) } -func (*VolumeEcShardInformationMessage) ProtoMessage() {} -func (*VolumeEcShardInformationMessage) Descriptor() ([]byte, []int) { - return fileDescriptor0, []int{4} -} +func (m *VolumeEcShardInformationMessage) Reset() { *m = VolumeEcShardInformationMessage{} } +func (m *VolumeEcShardInformationMessage) String() string { return proto.CompactTextString(m) } +func (*VolumeEcShardInformationMessage) ProtoMessage() {} +func (*VolumeEcShardInformationMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} } func (m *VolumeEcShardInformationMessage) GetId() uint32 { if m != nil { @@ -1424,12 +1428,10 @@ type GetMasterConfigurationResponse struct { MetricsIntervalSeconds uint32 `protobuf:"varint,2,opt,name=metrics_interval_seconds,json=metricsIntervalSeconds" json:"metrics_interval_seconds,omitempty"` } -func (m *GetMasterConfigurationResponse) Reset() { *m = GetMasterConfigurationResponse{} } -func (m *GetMasterConfigurationResponse) String() string { return proto.CompactTextString(m) } -func (*GetMasterConfigurationResponse) ProtoMessage() {} -func (*GetMasterConfigurationResponse) Descriptor() ([]byte, []int) { - return fileDescriptor0, []int{32} -} +func (m *GetMasterConfigurationResponse) Reset() { *m = GetMasterConfigurationResponse{} } +func (m *GetMasterConfigurationResponse) String() string { return proto.CompactTextString(m) } +func (*GetMasterConfigurationResponse) ProtoMessage() {} +func (*GetMasterConfigurationResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{32} } func (m *GetMasterConfigurationResponse) GetMetricsAddress() string { if m != nil { @@ -1477,6 +1479,142 @@ func (m *ListMasterClientsResponse) GetGrpcAddresses() []string { return nil } +type LeaseAdminTokenRequest struct { + PreviousToken int64 `protobuf:"varint,1,opt,name=previous_token,json=previousToken" json:"previous_token,omitempty"` + PreviousLockTime int64 `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime" json:"previous_lock_time,omitempty"` +} + +func (m *LeaseAdminTokenRequest) Reset() { *m = LeaseAdminTokenRequest{} } +func (m *LeaseAdminTokenRequest) String() string { return proto.CompactTextString(m) } +func (*LeaseAdminTokenRequest) ProtoMessage() {} +func (*LeaseAdminTokenRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{35} } + +func (m *LeaseAdminTokenRequest) GetPreviousToken() int64 { + if m != nil { + return m.PreviousToken + } + return 0 +} + +func (m *LeaseAdminTokenRequest) GetPreviousLockTime() int64 { + if m != nil { + return m.PreviousLockTime + } + return 0 +} + +type LeaseAdminTokenResponse struct { + IsAllowed bool `protobuf:"varint,1,opt,name=is_allowed,json=isAllowed" json:"is_allowed,omitempty"` + Error string `protobuf:"bytes,2,opt,name=error" json:"error,omitempty"` + LockTsNs int64 `protobuf:"varint,3,opt,name=lock_ts_ns,json=lockTsNs" json:"lock_ts_ns,omitempty"` + Token int64 `protobuf:"varint,4,opt,name=token" json:"token,omitempty"` +} + +func (m *LeaseAdminTokenResponse) Reset() { *m = LeaseAdminTokenResponse{} } +func (m *LeaseAdminTokenResponse) String() string { return proto.CompactTextString(m) } +func (*LeaseAdminTokenResponse) ProtoMessage() {} +func (*LeaseAdminTokenResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{36} } + +func (m *LeaseAdminTokenResponse) GetIsAllowed() bool { + if m != nil { + return m.IsAllowed + } + return false +} + +func (m *LeaseAdminTokenResponse) GetError() string { + if m != nil { + return m.Error + } + return "" +} + +func (m *LeaseAdminTokenResponse) GetLockTsNs() int64 { + if m != nil { + return m.LockTsNs + } + return 0 +} + +func (m *LeaseAdminTokenResponse) GetToken() int64 { + if m != nil { + return m.Token + } + return 0 +} + +type ReleaseAdminTokenRequest struct { + PreviousToken int64 `protobuf:"varint,1,opt,name=previous_token,json=previousToken" json:"previous_token,omitempty"` + PreviousLockTime int64 `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime" json:"previous_lock_time,omitempty"` +} + +func (m *ReleaseAdminTokenRequest) Reset() { *m = ReleaseAdminTokenRequest{} } +func (m *ReleaseAdminTokenRequest) String() string { return proto.CompactTextString(m) } +func (*ReleaseAdminTokenRequest) ProtoMessage() {} +func (*ReleaseAdminTokenRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{37} } + +func (m *ReleaseAdminTokenRequest) GetPreviousToken() int64 { + if m != nil { + return m.PreviousToken + } + return 0 +} + +func (m *ReleaseAdminTokenRequest) GetPreviousLockTime() int64 { + if m != nil { + return m.PreviousLockTime + } + return 0 +} + +type ReleaseAdminTokenResponse struct { +} + +func (m *ReleaseAdminTokenResponse) Reset() { *m = ReleaseAdminTokenResponse{} } +func (m *ReleaseAdminTokenResponse) String() string { return proto.CompactTextString(m) } +func (*ReleaseAdminTokenResponse) ProtoMessage() {} +func (*ReleaseAdminTokenResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{38} } + +type VerifyAdminTokenRequest struct { + Token int64 `protobuf:"varint,1,opt,name=token" json:"token,omitempty"` + LockTime int64 `protobuf:"varint,2,opt,name=lock_time,json=lockTime" json:"lock_time,omitempty"` +} + +func (m *VerifyAdminTokenRequest) Reset() { *m = VerifyAdminTokenRequest{} } +func (m *VerifyAdminTokenRequest) String() string { return proto.CompactTextString(m) } +func (*VerifyAdminTokenRequest) ProtoMessage() {} +func (*VerifyAdminTokenRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{39} } + +func (m *VerifyAdminTokenRequest) GetToken() int64 { + if m != nil { + return m.Token + } + return 0 +} + +func (m *VerifyAdminTokenRequest) GetLockTime() int64 { + if m != nil { + return m.LockTime + } + return 0 +} + +type VerifyAdminTokenResponse struct { + IsValid bool `protobuf:"varint,1,opt,name=is_valid,json=isValid" json:"is_valid,omitempty"` +} + +func (m *VerifyAdminTokenResponse) Reset() { *m = VerifyAdminTokenResponse{} } +func (m *VerifyAdminTokenResponse) String() string { return proto.CompactTextString(m) } +func (*VerifyAdminTokenResponse) ProtoMessage() {} +func (*VerifyAdminTokenResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{40} } + +func (m *VerifyAdminTokenResponse) GetIsValid() bool { + if m != nil { + return m.IsValid + } + return false +} + func init() { proto.RegisterType((*Heartbeat)(nil), "master_pb.Heartbeat") proto.RegisterType((*HeartbeatResponse)(nil), "master_pb.HeartbeatResponse") @@ -1516,6 +1654,12 @@ func init() { proto.RegisterType((*GetMasterConfigurationResponse)(nil), "master_pb.GetMasterConfigurationResponse") proto.RegisterType((*ListMasterClientsRequest)(nil), "master_pb.ListMasterClientsRequest") proto.RegisterType((*ListMasterClientsResponse)(nil), "master_pb.ListMasterClientsResponse") + proto.RegisterType((*LeaseAdminTokenRequest)(nil), "master_pb.LeaseAdminTokenRequest") + proto.RegisterType((*LeaseAdminTokenResponse)(nil), "master_pb.LeaseAdminTokenResponse") + proto.RegisterType((*ReleaseAdminTokenRequest)(nil), "master_pb.ReleaseAdminTokenRequest") + proto.RegisterType((*ReleaseAdminTokenResponse)(nil), "master_pb.ReleaseAdminTokenResponse") + proto.RegisterType((*VerifyAdminTokenRequest)(nil), "master_pb.VerifyAdminTokenRequest") + proto.RegisterType((*VerifyAdminTokenResponse)(nil), "master_pb.VerifyAdminTokenResponse") } // Reference imports to suppress errors if they are not otherwise used. @@ -1540,6 +1684,9 @@ type SeaweedClient interface { LookupEcVolume(ctx context.Context, in *LookupEcVolumeRequest, opts ...grpc.CallOption) (*LookupEcVolumeResponse, error) GetMasterConfiguration(ctx context.Context, in *GetMasterConfigurationRequest, opts ...grpc.CallOption) (*GetMasterConfigurationResponse, error) ListMasterClients(ctx context.Context, in *ListMasterClientsRequest, opts ...grpc.CallOption) (*ListMasterClientsResponse, error) + LeaseAdminToken(ctx context.Context, in *LeaseAdminTokenRequest, opts ...grpc.CallOption) (*LeaseAdminTokenResponse, error) + ReleaseAdminToken(ctx context.Context, in *ReleaseAdminTokenRequest, opts ...grpc.CallOption) (*ReleaseAdminTokenResponse, error) + VerifyAdminToken(ctx context.Context, in *VerifyAdminTokenRequest, opts ...grpc.CallOption) (*VerifyAdminTokenResponse, error) } type seaweedClient struct { @@ -1693,6 +1840,33 @@ func (c *seaweedClient) ListMasterClients(ctx context.Context, in *ListMasterCli return out, nil } +func (c *seaweedClient) LeaseAdminToken(ctx context.Context, in *LeaseAdminTokenRequest, opts ...grpc.CallOption) (*LeaseAdminTokenResponse, error) { + out := new(LeaseAdminTokenResponse) + err := grpc.Invoke(ctx, "/master_pb.Seaweed/LeaseAdminToken", in, out, c.cc, opts...) + if err != nil { + return nil, err + } + return out, nil +} + +func (c *seaweedClient) ReleaseAdminToken(ctx context.Context, in *ReleaseAdminTokenRequest, opts ...grpc.CallOption) (*ReleaseAdminTokenResponse, error) { + out := new(ReleaseAdminTokenResponse) + err := grpc.Invoke(ctx, "/master_pb.Seaweed/ReleaseAdminToken", in, out, c.cc, opts...) + if err != nil { + return nil, err + } + return out, nil +} + +func (c *seaweedClient) VerifyAdminToken(ctx context.Context, in *VerifyAdminTokenRequest, opts ...grpc.CallOption) (*VerifyAdminTokenResponse, error) { + out := new(VerifyAdminTokenResponse) + err := grpc.Invoke(ctx, "/master_pb.Seaweed/VerifyAdminToken", in, out, c.cc, opts...) + if err != nil { + return nil, err + } + return out, nil +} + // Server API for Seaweed service type SeaweedServer interface { @@ -1707,6 +1881,9 @@ type SeaweedServer interface { LookupEcVolume(context.Context, *LookupEcVolumeRequest) (*LookupEcVolumeResponse, error) GetMasterConfiguration(context.Context, *GetMasterConfigurationRequest) (*GetMasterConfigurationResponse, error) ListMasterClients(context.Context, *ListMasterClientsRequest) (*ListMasterClientsResponse, error) + LeaseAdminToken(context.Context, *LeaseAdminTokenRequest) (*LeaseAdminTokenResponse, error) + ReleaseAdminToken(context.Context, *ReleaseAdminTokenRequest) (*ReleaseAdminTokenResponse, error) + VerifyAdminToken(context.Context, *VerifyAdminTokenRequest) (*VerifyAdminTokenResponse, error) } func RegisterSeaweedServer(s *grpc.Server, srv SeaweedServer) { @@ -1927,6 +2104,60 @@ func _Seaweed_ListMasterClients_Handler(srv interface{}, ctx context.Context, de return interceptor(ctx, in, info, handler) } +func _Seaweed_LeaseAdminToken_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(LeaseAdminTokenRequest) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(SeaweedServer).LeaseAdminToken(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: "/master_pb.Seaweed/LeaseAdminToken", + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(SeaweedServer).LeaseAdminToken(ctx, req.(*LeaseAdminTokenRequest)) + } + return interceptor(ctx, in, info, handler) +} + +func _Seaweed_ReleaseAdminToken_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(ReleaseAdminTokenRequest) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(SeaweedServer).ReleaseAdminToken(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: "/master_pb.Seaweed/ReleaseAdminToken", + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(SeaweedServer).ReleaseAdminToken(ctx, req.(*ReleaseAdminTokenRequest)) + } + return interceptor(ctx, in, info, handler) +} + +func _Seaweed_VerifyAdminToken_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(VerifyAdminTokenRequest) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(SeaweedServer).VerifyAdminToken(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: "/master_pb.Seaweed/VerifyAdminToken", + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(SeaweedServer).VerifyAdminToken(ctx, req.(*VerifyAdminTokenRequest)) + } + return interceptor(ctx, in, info, handler) +} + var _Seaweed_serviceDesc = grpc.ServiceDesc{ ServiceName: "master_pb.Seaweed", HandlerType: (*SeaweedServer)(nil), @@ -1967,6 +2198,18 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{ MethodName: "ListMasterClients", Handler: _Seaweed_ListMasterClients_Handler, }, + { + MethodName: "LeaseAdminToken", + Handler: _Seaweed_LeaseAdminToken_Handler, + }, + { + MethodName: "ReleaseAdminToken", + Handler: _Seaweed_ReleaseAdminToken_Handler, + }, + { + MethodName: "VerifyAdminToken", + Handler: _Seaweed_VerifyAdminToken_Handler, + }, }, Streams: []grpc.StreamDesc{ { @@ -1988,142 +2231,156 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{ func init() { proto.RegisterFile("master.proto", fileDescriptor0) } var fileDescriptor0 = []byte{ - // 2183 bytes of a gzipped FileDescriptorProto - 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xd4, 0x59, 0xcd, 0x6f, 0x1b, 0xc7, - 0x15, 0xf7, 0x92, 0x94, 0x48, 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0x1f, 0xfe, 0x37, 0x00, 0x00, 0xff, + 0xff, 0x41, 0x4f, 0x53, 0xa0, 0xd6, 0x1e, 0x00, 0x00, } diff --git a/weed/server/master_grpc_server_admin.go b/weed/server/master_grpc_server_admin.go new file mode 100644 index 000000000..b74e9291d --- /dev/null +++ b/weed/server/master_grpc_server_admin.go @@ -0,0 +1,107 @@ +package weed_server + +import ( + "context" + "math/rand" + "time" + + "github.com/chrislusf/seaweedfs/weed/pb/master_pb" +) + +/* +How exclusive lock works? +----------- + +Shell +------ +When shell lock, + * lease an admin token (lockTime, token) + * start a goroutine to renew the admin token periodically +For later volume operations, send (lockTime, token) to volume servers for exclusive access + * need to pause renewal a few seconds, to prevent race condition + +When shell unlock + * stop the renewal goroutine + * sends a release lock request + +Master +------ +Master maintains: + * randomNumber + * lastLockTime +When master receives the lease/renew request from shell + If lastLockTime still fresh { + if is a renew and token is valid { + // for renew + generate the randomNumber => token + return + } + refuse + return + } else { + // for fresh lease request + generate the randomNumber => token + return + } + +When master receives the release lock request from shell + set the lastLockTime to zero + +When master receives the verfication request from volume servers + return secret+lockTime == token && lockTime == lastLockTime + +Volume +------ +When receives (lockTime, token), ask the master whether this is valid + + +*/ + +const ( + LockDuration = 10 * time.Second +) + +func (ms *MasterServer) LeaseAdminToken(ctx context.Context, req *master_pb.LeaseAdminTokenRequest) (*master_pb.LeaseAdminTokenResponse, error) { + resp := &master_pb.LeaseAdminTokenResponse{} + + if ms.adminAccessLockTime.Add(LockDuration).After(time.Now()) { + if req.PreviousToken != 0 && ms.isValidToken(time.Unix(0, req.PreviousLockTime), req.PreviousToken) { + // for renew + ts, token := ms.generateToken() + resp.Token, resp.LockTsNs = token, ts.UnixNano() + return resp, nil + } + // refuse since still locked + resp.Error = "already locked" + return resp, nil + } + // for fresh lease request + ts, token := ms.generateToken() + resp.Token, resp.LockTsNs = token, ts.UnixNano() + return resp, nil +} + +func (ms *MasterServer) isValidToken(ts time.Time, token int64) bool { + return ms.adminAccessLockTime.Equal(ts) && ms.adminAccessSecret == token +} +func (ms *MasterServer) generateToken() (ts time.Time, token int64) { + ms.adminAccessLockTime = time.Now() + ms.adminAccessSecret = rand.Int63() + return ms.adminAccessLockTime, ms.adminAccessSecret +} + +func (ms *MasterServer) ReleaseAdminToken(ctx context.Context, req *master_pb.ReleaseAdminTokenRequest) (*master_pb.ReleaseAdminTokenResponse, error) { + resp := &master_pb.ReleaseAdminTokenResponse{} + if ms.isValidToken(time.Unix(0, req.PreviousLockTime), req.PreviousToken) { + ms.adminAccessSecret = 0 + } + return resp, nil +} + +func (ms *MasterServer) VerifyAdminToken(ctx context.Context, req *master_pb.VerifyAdminTokenRequest) (*master_pb.VerifyAdminTokenResponse, error) { + resp := &master_pb.VerifyAdminTokenResponse{} + if ms.isValidToken(time.Unix(0, req.LockTime), req.Token) { + resp.IsValid = true + } + return resp, nil +} diff --git a/weed/server/master_server.go b/weed/server/master_server.go index 152685886..a7bea8905 100644 --- a/weed/server/master_server.go +++ b/weed/server/master_server.go @@ -66,7 +66,8 @@ type MasterServer struct { MasterClient *wdclient.MasterClient - currentAdminShellClient string + adminAccessSecret int64 + adminAccessLockTime time.Time } func NewMasterServer(r *mux.Router, option *MasterOption, peers []string) *MasterServer {