Add some CAS WIP

command/proto/command.pb.go

@@ -128,14 +128,16 @@ func (BackupRequest_Format) EnumDescriptor() ([]byte, []int) {
 type Command_Type int32
 
 const (
-	Command_COMMAND_TYPE_UNKNOWN       Command_Type = 0
-	Command_COMMAND_TYPE_QUERY         Command_Type = 1
-	Command_COMMAND_TYPE_EXECUTE       Command_Type = 2
-	Command_COMMAND_TYPE_NOOP          Command_Type = 3
-	Command_COMMAND_TYPE_LOAD          Command_Type = 4
-	Command_COMMAND_TYPE_JOIN          Command_Type = 5
-	Command_COMMAND_TYPE_EXECUTE_QUERY Command_Type = 6
-	Command_COMMAND_TYPE_LOAD_CHUNK    Command_Type = 7
+	Command_COMMAND_TYPE_UNKNOWN            Command_Type = 0
+	Command_COMMAND_TYPE_QUERY              Command_Type = 1
+	Command_COMMAND_TYPE_EXECUTE            Command_Type = 2
+	Command_COMMAND_TYPE_NOOP               Command_Type = 3
+	Command_COMMAND_TYPE_LOAD               Command_Type = 4
+	Command_COMMAND_TYPE_JOIN               Command_Type = 5
+	Command_COMMAND_TYPE_EXECUTE_QUERY      Command_Type = 6
+	Command_COMMAND_TYPE_LOAD_CHUNK         Command_Type = 7
+	Command_COMMAND_TYPE_COMPARE_AND_SWAP   Command_Type = 8
+	Command_COMMAND_TYPE_COMPARE_AND_DELETE Command_Type = 9
 )
 
 // Enum value maps for Command_Type.
@@ -149,16 +151,20 @@ var (
 		5: "COMMAND_TYPE_JOIN",
 		6: "COMMAND_TYPE_EXECUTE_QUERY",
 		7: "COMMAND_TYPE_LOAD_CHUNK",
+		8: "COMMAND_TYPE_COMPARE_AND_SWAP",
+		9: "COMMAND_TYPE_COMPARE_AND_DELETE",
 	}
 	Command_Type_value = map[string]int32{
-		"COMMAND_TYPE_UNKNOWN":       0,
-		"COMMAND_TYPE_QUERY":         1,
-		"COMMAND_TYPE_EXECUTE":       2,
-		"COMMAND_TYPE_NOOP":          3,
-		"COMMAND_TYPE_LOAD":          4,
-		"COMMAND_TYPE_JOIN":          5,
-		"COMMAND_TYPE_EXECUTE_QUERY": 6,
-		"COMMAND_TYPE_LOAD_CHUNK":    7,
+		"COMMAND_TYPE_UNKNOWN":            0,
+		"COMMAND_TYPE_QUERY":              1,
+		"COMMAND_TYPE_EXECUTE":            2,
+		"COMMAND_TYPE_NOOP":               3,
+		"COMMAND_TYPE_LOAD":               4,
+		"COMMAND_TYPE_JOIN":               5,
+		"COMMAND_TYPE_EXECUTE_QUERY":      6,
+		"COMMAND_TYPE_LOAD_CHUNK":         7,
+		"COMMAND_TYPE_COMPARE_AND_SWAP":   8,
+		"COMMAND_TYPE_COMPARE_AND_DELETE": 9,
 	}
 )
 
@@ -186,7 +192,7 @@ func (x Command_Type) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use Command_Type.Descriptor instead.
 func (Command_Type) EnumDescriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{17, 0}
+	return file_command_proto_rawDescGZIP(), []int{20, 0}
 }
 
 type CDCEvent_Operation int32
@@ -238,7 +244,7 @@ func (x CDCEvent_Operation) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use CDCEvent_Operation.Descriptor instead.
 func (CDCEvent_Operation) EnumDescriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{20, 0}
+	return file_command_proto_rawDescGZIP(), []int{23, 0}
 }
 
 type UpdateHookEvent_Operation int32
@@ -290,7 +296,7 @@ func (x UpdateHookEvent_Operation) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use UpdateHookEvent_Operation.Descriptor instead.
 func (UpdateHookEvent_Operation) EnumDescriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{22, 0}
+	return file_command_proto_rawDescGZIP(), []int{25, 0}
 }
 
 type Parameter struct {
@@ -1393,6 +1399,186 @@ func (x *RemoveNodeRequest) GetId() string {
 	return ""
 }
 
+type CompareAndSwapRequest struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Key           string                 `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	Value         string                 `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+	PrevExist     bool                   `protobuf:"varint,3,opt,name=prevExist,proto3" json:"prevExist,omitempty"`
+	PrevValue     string                 `protobuf:"bytes,4,opt,name=prevValue,proto3" json:"prevValue,omitempty"`
+	PrevIndex     uint64                 `protobuf:"varint,5,opt,name=prevIndex,proto3" json:"prevIndex,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *CompareAndSwapRequest) Reset() {
+	*x = CompareAndSwapRequest{}
+	mi := &file_command_proto_msgTypes[16]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *CompareAndSwapRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CompareAndSwapRequest) ProtoMessage() {}
+
+func (x *CompareAndSwapRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_command_proto_msgTypes[16]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CompareAndSwapRequest.ProtoReflect.Descriptor instead.
+func (*CompareAndSwapRequest) Descriptor() ([]byte, []int) {
+	return file_command_proto_rawDescGZIP(), []int{16}
+}
+
+func (x *CompareAndSwapRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *CompareAndSwapRequest) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
+func (x *CompareAndSwapRequest) GetPrevExist() bool {
+	if x != nil {
+		return x.PrevExist
+	}
+	return false
+}
+
+func (x *CompareAndSwapRequest) GetPrevValue() string {
+	if x != nil {
+		return x.PrevValue
+	}
+	return ""
+}
+
+func (x *CompareAndSwapRequest) GetPrevIndex() uint64 {
+	if x != nil {
+		return x.PrevIndex
+	}
+	return 0
+}
+
+type CompareAndSwapResponse struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *CompareAndSwapResponse) Reset() {
+	*x = CompareAndSwapResponse{}
+	mi := &file_command_proto_msgTypes[17]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *CompareAndSwapResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CompareAndSwapResponse) ProtoMessage() {}
+
+func (x *CompareAndSwapResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_command_proto_msgTypes[17]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CompareAndSwapResponse.ProtoReflect.Descriptor instead.
+func (*CompareAndSwapResponse) Descriptor() ([]byte, []int) {
+	return file_command_proto_rawDescGZIP(), []int{17}
+}
+
+type CompareAndDeleteRequest struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Key           string                 `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	PrevExist     bool                   `protobuf:"varint,2,opt,name=prevExist,proto3" json:"prevExist,omitempty"`
+	PrevValue     string                 `protobuf:"bytes,3,opt,name=prevValue,proto3" json:"prevValue,omitempty"`
+	PrevIndex     uint64                 `protobuf:"varint,4,opt,name=prevIndex,proto3" json:"prevIndex,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *CompareAndDeleteRequest) Reset() {
+	*x = CompareAndDeleteRequest{}
+	mi := &file_command_proto_msgTypes[18]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *CompareAndDeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CompareAndDeleteRequest) ProtoMessage() {}
+
+func (x *CompareAndDeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_command_proto_msgTypes[18]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CompareAndDeleteRequest.ProtoReflect.Descriptor instead.
+func (*CompareAndDeleteRequest) Descriptor() ([]byte, []int) {
+	return file_command_proto_rawDescGZIP(), []int{18}
+}
+
+func (x *CompareAndDeleteRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *CompareAndDeleteRequest) GetPrevExist() bool {
+	if x != nil {
+		return x.PrevExist
+	}
+	return false
+}
+
+func (x *CompareAndDeleteRequest) GetPrevValue() string {
+	if x != nil {
+		return x.PrevValue
+	}
+	return ""
+}
+
+func (x *CompareAndDeleteRequest) GetPrevIndex() uint64 {
+	if x != nil {
+		return x.PrevIndex
+	}
+	return 0
+}
+
 type Noop struct {
 	state         protoimpl.MessageState `protogen:"open.v1"`
 	Id            string                 `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@@ -1402,7 +1588,7 @@ type Noop struct {
 
 func (x *Noop) Reset() {
 	*x = Noop{}
-	mi := &file_command_proto_msgTypes[16]
+	mi := &file_command_proto_msgTypes[19]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1414,7 +1600,7 @@ func (x *Noop) String() string {
 func (*Noop) ProtoMessage() {}
 
 func (x *Noop) ProtoReflect() protoreflect.Message {
-	mi := &file_command_proto_msgTypes[16]
+	mi := &file_command_proto_msgTypes[19]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1427,7 +1613,7 @@ func (x *Noop) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Noop.ProtoReflect.Descriptor instead.
 func (*Noop) Descriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{16}
+	return file_command_proto_rawDescGZIP(), []int{19}
 }
 
 func (x *Noop) GetId() string {
@@ -1448,7 +1634,7 @@ type Command struct {
 
 func (x *Command) Reset() {
 	*x = Command{}
-	mi := &file_command_proto_msgTypes[17]
+	mi := &file_command_proto_msgTypes[20]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1460,7 +1646,7 @@ func (x *Command) String() string {
 func (*Command) ProtoMessage() {}
 
 func (x *Command) ProtoReflect() protoreflect.Message {
-	mi := &file_command_proto_msgTypes[17]
+	mi := &file_command_proto_msgTypes[20]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1473,7 +1659,7 @@ func (x *Command) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Command.ProtoReflect.Descriptor instead.
 func (*Command) Descriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{17}
+	return file_command_proto_rawDescGZIP(), []int{20}
 }
 
 func (x *Command) GetType() Command_Type {
@@ -1513,7 +1699,7 @@ type CDCValue struct {
 
 func (x *CDCValue) Reset() {
 	*x = CDCValue{}
-	mi := &file_command_proto_msgTypes[18]
+	mi := &file_command_proto_msgTypes[21]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1525,7 +1711,7 @@ func (x *CDCValue) String() string {
 func (*CDCValue) ProtoMessage() {}
 
 func (x *CDCValue) ProtoReflect() protoreflect.Message {
-	mi := &file_command_proto_msgTypes[18]
+	mi := &file_command_proto_msgTypes[21]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1538,7 +1724,7 @@ func (x *CDCValue) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CDCValue.ProtoReflect.Descriptor instead.
 func (*CDCValue) Descriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{18}
+	return file_command_proto_rawDescGZIP(), []int{21}
 }
 
 func (x *CDCValue) GetValue() isCDCValue_Value {
@@ -1636,7 +1822,7 @@ type CDCRow struct {
 
 func (x *CDCRow) Reset() {
 	*x = CDCRow{}
-	mi := &file_command_proto_msgTypes[19]
+	mi := &file_command_proto_msgTypes[22]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1648,7 +1834,7 @@ func (x *CDCRow) String() string {
 func (*CDCRow) ProtoMessage() {}
 
 func (x *CDCRow) ProtoReflect() protoreflect.Message {
-	mi := &file_command_proto_msgTypes[19]
+	mi := &file_command_proto_msgTypes[22]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1661,7 +1847,7 @@ func (x *CDCRow) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CDCRow.ProtoReflect.Descriptor instead.
 func (*CDCRow) Descriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{19}
+	return file_command_proto_rawDescGZIP(), []int{22}
 }
 
 func (x *CDCRow) GetValues() []*CDCValue {
@@ -1686,7 +1872,7 @@ type CDCEvent struct {
 
 func (x *CDCEvent) Reset() {
 	*x = CDCEvent{}
-	mi := &file_command_proto_msgTypes[20]
+	mi := &file_command_proto_msgTypes[23]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1698,7 +1884,7 @@ func (x *CDCEvent) String() string {
 func (*CDCEvent) ProtoMessage() {}
 
 func (x *CDCEvent) ProtoReflect() protoreflect.Message {
-	mi := &file_command_proto_msgTypes[20]
+	mi := &file_command_proto_msgTypes[23]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1711,7 +1897,7 @@ func (x *CDCEvent) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CDCEvent.ProtoReflect.Descriptor instead.
 func (*CDCEvent) Descriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{20}
+	return file_command_proto_rawDescGZIP(), []int{23}
 }
 
 func (x *CDCEvent) GetError() string {
@@ -1773,7 +1959,7 @@ type CDCEvents struct {
 
 func (x *CDCEvents) Reset() {
 	*x = CDCEvents{}
-	mi := &file_command_proto_msgTypes[21]
+	mi := &file_command_proto_msgTypes[24]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1785,7 +1971,7 @@ func (x *CDCEvents) String() string {
 func (*CDCEvents) ProtoMessage() {}
 
 func (x *CDCEvents) ProtoReflect() protoreflect.Message {
-	mi := &file_command_proto_msgTypes[21]
+	mi := &file_command_proto_msgTypes[24]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1798,7 +1984,7 @@ func (x *CDCEvents) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CDCEvents.ProtoReflect.Descriptor instead.
 func (*CDCEvents) Descriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{21}
+	return file_command_proto_rawDescGZIP(), []int{24}
 }
 
 func (x *CDCEvents) GetK() uint64 {
@@ -1827,7 +2013,7 @@ type UpdateHookEvent struct {
 
 func (x *UpdateHookEvent) Reset() {
 	*x = UpdateHookEvent{}
-	mi := &file_command_proto_msgTypes[22]
+	mi := &file_command_proto_msgTypes[25]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1839,7 +2025,7 @@ func (x *UpdateHookEvent) String() string {
 func (*UpdateHookEvent) ProtoMessage() {}
 
 func (x *UpdateHookEvent) ProtoReflect() protoreflect.Message {
-	mi := &file_command_proto_msgTypes[22]
+	mi := &file_command_proto_msgTypes[25]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1852,7 +2038,7 @@ func (x *UpdateHookEvent) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateHookEvent.ProtoReflect.Descriptor instead.
 func (*UpdateHookEvent) Descriptor() ([]byte, []int) {
-	return file_command_proto_rawDescGZIP(), []int{22}
+	return file_command_proto_rawDescGZIP(), []int{25}
 }
 
 func (x *UpdateHookEvent) GetError() string {
@@ -1977,16 +2163,28 @@ const file_command_proto_rawDesc = "" +
 	"\x02id\x18\x01 \x01(\tR\x02id\x12\x18\n" +
 	"\aaddress\x18\x02 \x01(\tR\aaddress\"#\n" +
 	"\x11RemoveNodeRequest\x12\x0e\n" +
-	"\x02id\x18\x01 \x01(\tR\x02id\"\x16\n" +
+	"\x02id\x18\x01 \x01(\tR\x02id\"\x99\x01\n" +
+	"\x15CompareAndSwapRequest\x12\x10\n" +
+	"\x03key\x18\x01 \x01(\tR\x03key\x12\x14\n" +
+	"\x05value\x18\x02 \x01(\tR\x05value\x12\x1c\n" +
+	"\tprevExist\x18\x03 \x01(\bR\tprevExist\x12\x1c\n" +
+	"\tprevValue\x18\x04 \x01(\tR\tprevValue\x12\x1c\n" +
+	"\tprevIndex\x18\x05 \x01(\x04R\tprevIndex\"\x18\n" +
+	"\x16CompareAndSwapResponse\"\x85\x01\n" +
+	"\x17CompareAndDeleteRequest\x12\x10\n" +
+	"\x03key\x18\x01 \x01(\tR\x03key\x12\x1c\n" +
+	"\tprevExist\x18\x02 \x01(\bR\tprevExist\x12\x1c\n" +
+	"\tprevValue\x18\x03 \x01(\tR\tprevValue\x12\x1c\n" +
+	"\tprevIndex\x18\x04 \x01(\x04R\tprevIndex\"\x16\n" +
 	"\x04Noop\x12\x0e\n" +
-	"\x02id\x18\x01 \x01(\tR\x02id\"\xcc\x02\n" +
+	"\x02id\x18\x01 \x01(\tR\x02id\"\x94\x03\n" +
 	"\aCommand\x12)\n" +
 	"\x04type\x18\x01 \x01(\x0e2\x15.command.Command.TypeR\x04type\x12\x1f\n" +
 	"\vsub_command\x18\x02 \x01(\fR\n" +
 	"subCommand\x12\x1e\n" +
 	"\n" +
 	"compressed\x18\x03 \x01(\bR\n" +
-	"compressed\"\xd4\x01\n" +
+	"compressed\"\x9c\x02\n" +
 	"\x04Type\x12\x18\n" +
 	"\x14COMMAND_TYPE_UNKNOWN\x10\x00\x12\x16\n" +
 	"\x12COMMAND_TYPE_QUERY\x10\x01\x12\x18\n" +
@@ -1995,7 +2193,9 @@ const file_command_proto_rawDesc = "" +
 	"\x11COMMAND_TYPE_LOAD\x10\x04\x12\x15\n" +
 	"\x11COMMAND_TYPE_JOIN\x10\x05\x12\x1e\n" +
 	"\x1aCOMMAND_TYPE_EXECUTE_QUERY\x10\x06\x12\x1b\n" +
-	"\x17COMMAND_TYPE_LOAD_CHUNK\x10\a\"c\n" +
+	"\x17COMMAND_TYPE_LOAD_CHUNK\x10\a\x12!\n" +
+	"\x1dCOMMAND_TYPE_COMPARE_AND_SWAP\x10\b\x12#\n" +
+	"\x1fCOMMAND_TYPE_COMPARE_AND_DELETE\x10\t\"c\n" +
 	"\bCDCValue\x12\x0e\n" +
 	"\x01i\x18\x01 \x01(\x12H\x00R\x01i\x12\x0e\n" +
 	"\x01d\x18\x02 \x01(\x01H\x00R\x01d\x12\x0e\n" +
@@ -2053,36 +2253,39 @@ func file_command_proto_rawDescGZIP() []byte {
 }
 
 var file_command_proto_enumTypes = make([]protoimpl.EnumInfo, 5)
-var file_command_proto_msgTypes = make([]protoimpl.MessageInfo, 23)
+var file_command_proto_msgTypes = make([]protoimpl.MessageInfo, 26)
 var file_command_proto_goTypes = []any{
-	(QueryRequest_Level)(0),        // 0: command.QueryRequest.Level
-	(BackupRequest_Format)(0),      // 1: command.BackupRequest.Format
-	(Command_Type)(0),              // 2: command.Command.Type
-	(CDCEvent_Operation)(0),        // 3: command.CDCEvent.Operation
-	(UpdateHookEvent_Operation)(0), // 4: command.UpdateHookEvent.Operation
-	(*Parameter)(nil),              // 5: command.Parameter
-	(*Statement)(nil),              // 6: command.Statement
-	(*Request)(nil),                // 7: command.Request
-	(*QueryRequest)(nil),           // 8: command.QueryRequest
-	(*Values)(nil),                 // 9: command.Values
-	(*QueryRows)(nil),              // 10: command.QueryRows
-	(*ExecuteRequest)(nil),         // 11: command.ExecuteRequest
-	(*ExecuteResult)(nil),          // 12: command.ExecuteResult
-	(*ExecuteQueryRequest)(nil),    // 13: command.ExecuteQueryRequest
-	(*ExecuteQueryResponse)(nil),   // 14: command.ExecuteQueryResponse
-	(*BackupRequest)(nil),          // 15: command.BackupRequest
-	(*LoadRequest)(nil),            // 16: command.LoadRequest
-	(*LoadChunkRequest)(nil),       // 17: command.LoadChunkRequest
-	(*JoinRequest)(nil),            // 18: command.JoinRequest
-	(*NotifyRequest)(nil),          // 19: command.NotifyRequest
-	(*RemoveNodeRequest)(nil),      // 20: command.RemoveNodeRequest
-	(*Noop)(nil),                   // 21: command.Noop
-	(*Command)(nil),                // 22: command.Command
-	(*CDCValue)(nil),               // 23: command.CDCValue
-	(*CDCRow)(nil),                 // 24: command.CDCRow
-	(*CDCEvent)(nil),               // 25: command.CDCEvent
-	(*CDCEvents)(nil),              // 26: command.CDCEvents
-	(*UpdateHookEvent)(nil),        // 27: command.UpdateHookEvent
+	(QueryRequest_Level)(0),         // 0: command.QueryRequest.Level
+	(BackupRequest_Format)(0),       // 1: command.BackupRequest.Format
+	(Command_Type)(0),               // 2: command.Command.Type
+	(CDCEvent_Operation)(0),         // 3: command.CDCEvent.Operation
+	(UpdateHookEvent_Operation)(0),  // 4: command.UpdateHookEvent.Operation
+	(*Parameter)(nil),               // 5: command.Parameter
+	(*Statement)(nil),               // 6: command.Statement
+	(*Request)(nil),                 // 7: command.Request
+	(*QueryRequest)(nil),            // 8: command.QueryRequest
+	(*Values)(nil),                  // 9: command.Values
+	(*QueryRows)(nil),               // 10: command.QueryRows
+	(*ExecuteRequest)(nil),          // 11: command.ExecuteRequest
+	(*ExecuteResult)(nil),           // 12: command.ExecuteResult
+	(*ExecuteQueryRequest)(nil),     // 13: command.ExecuteQueryRequest
+	(*ExecuteQueryResponse)(nil),    // 14: command.ExecuteQueryResponse
+	(*BackupRequest)(nil),           // 15: command.BackupRequest
+	(*LoadRequest)(nil),             // 16: command.LoadRequest
+	(*LoadChunkRequest)(nil),        // 17: command.LoadChunkRequest
+	(*JoinRequest)(nil),             // 18: command.JoinRequest
+	(*NotifyRequest)(nil),           // 19: command.NotifyRequest
+	(*RemoveNodeRequest)(nil),       // 20: command.RemoveNodeRequest
+	(*CompareAndSwapRequest)(nil),   // 21: command.CompareAndSwapRequest
+	(*CompareAndSwapResponse)(nil),  // 22: command.CompareAndSwapResponse
+	(*CompareAndDeleteRequest)(nil), // 23: command.CompareAndDeleteRequest
+	(*Noop)(nil),                    // 24: command.Noop
+	(*Command)(nil),                 // 25: command.Command
+	(*CDCValue)(nil),                // 26: command.CDCValue
+	(*CDCRow)(nil),                  // 27: command.CDCRow
+	(*CDCEvent)(nil),                // 28: command.CDCEvent
+	(*CDCEvents)(nil),               // 29: command.CDCEvents
+	(*UpdateHookEvent)(nil),         // 30: command.UpdateHookEvent
 }
 var file_command_proto_depIdxs = []int32{
 	5,  // 0: command.Statement.parameters:type_name -> command.Parameter
@@ -2098,11 +2301,11 @@ var file_command_proto_depIdxs = []int32{
 	12, // 10: command.ExecuteQueryResponse.e:type_name -> command.ExecuteResult
 	1,  // 11: command.BackupRequest.format:type_name -> command.BackupRequest.Format
 	2,  // 12: command.Command.type:type_name -> command.Command.Type
-	23, // 13: command.CDCRow.values:type_name -> command.CDCValue
+	26, // 13: command.CDCRow.values:type_name -> command.CDCValue
 	3,  // 14: command.CDCEvent.op:type_name -> command.CDCEvent.Operation
-	24, // 15: command.CDCEvent.old_row:type_name -> command.CDCRow
-	24, // 16: command.CDCEvent.new_row:type_name -> command.CDCRow
-	25, // 17: command.CDCEvents.events:type_name -> command.CDCEvent
+	27, // 15: command.CDCEvent.old_row:type_name -> command.CDCRow
+	27, // 16: command.CDCEvent.new_row:type_name -> command.CDCRow
+	28, // 17: command.CDCEvents.events:type_name -> command.CDCEvent
 	4,  // 18: command.UpdateHookEvent.op:type_name -> command.UpdateHookEvent.Operation
 	19, // [19:19] is the sub-list for method output_type
 	19, // [19:19] is the sub-list for method input_type
@@ -2128,7 +2331,7 @@ func file_command_proto_init() {
 		(*ExecuteQueryResponse_E)(nil),
 		(*ExecuteQueryResponse_Error)(nil),
 	}
-	file_command_proto_msgTypes[18].OneofWrappers = []any{
+	file_command_proto_msgTypes[21].OneofWrappers = []any{
 		(*CDCValue_I)(nil),
 		(*CDCValue_D)(nil),
 		(*CDCValue_B)(nil),
@@ -2141,7 +2344,7 @@ func file_command_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_command_proto_rawDesc), len(file_command_proto_rawDesc)),
 			NumEnums:      5,
-			NumMessages:   23,
+			NumMessages:   26,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

command/proto/command.proto

@@ -122,6 +122,24 @@ message RemoveNodeRequest {
 	string id = 1;
 }
 
+message CompareAndSwapRequest {
+	string key = 1;
+	string value = 2;
+	bool prevExist = 3;
+	string prevValue = 4;
+	uint64 prevIndex = 5;
+}
+
+message CompareAndSwapResponse {
+}
+
+message CompareAndDeleteRequest {
+	string key = 1;
+	bool prevExist = 2;
+	string prevValue = 3;
+	uint64 prevIndex = 4;
+}
+
 message Noop {
 	string id = 1;
 }
@@ -136,6 +154,8 @@ message Command {
 		COMMAND_TYPE_JOIN = 5;
 		COMMAND_TYPE_EXECUTE_QUERY = 6;
 		COMMAND_TYPE_LOAD_CHUNK = 7;
+		COMMAND_TYPE_COMPARE_AND_SWAP = 8;
+		COMMAND_TYPE_COMPARE_AND_DELETE = 9;
 	}
 	Type type = 1;
 	bytes sub_command = 2;

store/store.go

@@ -1829,6 +1829,13 @@ func (s *Store) Remove(rn *proto.RemoveNodeRequest) error {
 	return nil
 }
 
+func (s *Store) CompareAndSwap(req *proto.CompareAndSwapRequest) (*proto.CompareAndSwapResponse, uint64, error) {
+	if !s.open.Is() {
+		return nil, 0, ErrNotOpen
+	}
+	return nil, 0, nil
+}
+
 // Noop writes a noop command to the Raft log. A noop command simply
 // consumes a slot in the Raft log, but has no other effect on the
 // system.