chore: new InspectMachine gRPC method that to return store DB version (lamport time)

internal/machine/api/pb/machine.pb.go

@@ -371,6 +371,8 @@ type JoinClusterRequest struct {
 
 	Machine       *MachineInfo   `protobuf:"bytes,1,opt,name=machine,proto3" json:"machine,omitempty"`
 	OtherMachines []*MachineInfo `protobuf:"bytes,3,rep,name=other_machines,json=otherMachines,proto3" json:"other_machines,omitempty"`
+	// Minimum store database version the new machine should sync to before starting cluster operations.
+	MinStoreDbVersion int64 `protobuf:"varint,4,opt,name=min_store_db_version,json=minStoreDbVersion,proto3" json:"min_store_db_version,omitempty"`
 }
 
 func (x *JoinClusterRequest) Reset() {
@@ -419,6 +421,125 @@ func (x *JoinClusterRequest) GetOtherMachines() []*MachineInfo {
 	return nil
 }
 
+func (x *JoinClusterRequest) GetMinStoreDbVersion() int64 {
+	if x != nil {
+		return x.MinStoreDbVersion
+	}
+	return 0
+}
+
+type InspectMachineResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Must contain only one repeated messages field to allow broadcasting InspectMachine requests to multiple machines.
+	Machines []*MachineDetails `protobuf:"bytes,1,rep,name=machines,proto3" json:"machines,omitempty"`
+}
+
+func (x *InspectMachineResponse) Reset() {
+	*x = InspectMachineResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *InspectMachineResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*InspectMachineResponse) ProtoMessage() {}
+
+func (x *InspectMachineResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use InspectMachineResponse.ProtoReflect.Descriptor instead.
+func (*InspectMachineResponse) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *InspectMachineResponse) GetMachines() []*MachineDetails {
+	if x != nil {
+		return x.Machines
+	}
+	return nil
+}
+
+type MachineDetails struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Metadata *Metadata    `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	Machine  *MachineInfo `protobuf:"bytes,2,opt,name=machine,proto3" json:"machine,omitempty"`
+	// Current Corrosion cr-sqlite database version (Lamport timestamp) of the cluster store.
+	StoreDbVersion int64 `protobuf:"varint,3,opt,name=store_db_version,json=storeDbVersion,proto3" json:"store_db_version,omitempty"`
+}
+
+func (x *MachineDetails) Reset() {
+	*x = MachineDetails{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MachineDetails) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MachineDetails) ProtoMessage() {}
+
+func (x *MachineDetails) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MachineDetails.ProtoReflect.Descriptor instead.
+func (*MachineDetails) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *MachineDetails) GetMetadata() *Metadata {
+	if x != nil {
+		return x.Metadata
+	}
+	return nil
+}
+
+func (x *MachineDetails) GetMachine() *MachineInfo {
+	if x != nil {
+		return x.Machine
+	}
+	return nil
+}
+
+func (x *MachineDetails) GetStoreDbVersion() int64 {
+	if x != nil {
+		return x.StoreDbVersion
+	}
+	return 0
+}
+
 type TokenResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -430,7 +551,7 @@ type TokenResponse struct {
 func (x *TokenResponse) Reset() {
 	*x = TokenResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[6]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -443,7 +564,7 @@ func (x *TokenResponse) String() string {
 func (*TokenResponse) ProtoMessage() {}
 
 func (x *TokenResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[6]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -456,7 +577,7 @@ func (x *TokenResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TokenResponse.ProtoReflect.Descriptor instead.
 func (*TokenResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{6}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *TokenResponse) GetToken() string {
@@ -475,7 +596,7 @@ type ResetRequest struct {
 func (x *ResetRequest) Reset() {
 	*x = ResetRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -488,7 +609,7 @@ func (x *ResetRequest) String() string {
 func (*ResetRequest) ProtoMessage() {}
 
 func (x *ResetRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -501,7 +622,7 @@ func (x *ResetRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ResetRequest.ProtoReflect.Descriptor instead.
 func (*ResetRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{7}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{9}
 }
 
 type Service struct {
@@ -518,7 +639,7 @@ type Service struct {
 func (x *Service) Reset() {
 	*x = Service{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -531,7 +652,7 @@ func (x *Service) String() string {
 func (*Service) ProtoMessage() {}
 
 func (x *Service) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -544,7 +665,7 @@ func (x *Service) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Service.ProtoReflect.Descriptor instead.
 func (*Service) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{8}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *Service) GetId() string {
@@ -586,7 +707,7 @@ type InspectServiceRequest struct {
 func (x *InspectServiceRequest) Reset() {
 	*x = InspectServiceRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -599,7 +720,7 @@ func (x *InspectServiceRequest) String() string {
 func (*InspectServiceRequest) ProtoMessage() {}
 
 func (x *InspectServiceRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -612,7 +733,7 @@ func (x *InspectServiceRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use InspectServiceRequest.ProtoReflect.Descriptor instead.
 func (*InspectServiceRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{9}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *InspectServiceRequest) GetId() string {
@@ -633,7 +754,7 @@ type InspectServiceResponse struct {
 func (x *InspectServiceResponse) Reset() {
 	*x = InspectServiceResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -646,7 +767,7 @@ func (x *InspectServiceResponse) String() string {
 func (*InspectServiceResponse) ProtoMessage() {}
 
 func (x *InspectServiceResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -659,7 +780,7 @@ func (x *InspectServiceResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use InspectServiceResponse.ProtoReflect.Descriptor instead.
 func (*InspectServiceResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{10}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *InspectServiceResponse) GetService() *Service {
@@ -682,7 +803,7 @@ type Service_Container struct {
 func (x *Service_Container) Reset() {
 	*x = Service_Container{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -695,7 +816,7 @@ func (x *Service_Container) String() string {
 func (*Service_Container) ProtoMessage() {}
 
 func (x *Service_Container) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -708,7 +829,7 @@ func (x *Service_Container) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Service_Container.ProtoReflect.Descriptor instead.
 func (*Service_Container) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{8, 0}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{10, 0}
 }
 
 func (x *Service_Container) GetMachineId() string {
@@ -776,69 +897,91 @@ var file_internal_machine_api_pb_machine_proto_rawDesc = []byte{
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 }
 
 var (
@@ -853,7 +996,7 @@ func file_internal_machine_api_pb_machine_proto_rawDescGZIP() []byte {
 	return file_internal_machine_api_pb_machine_proto_rawDescData
 }
 
-var file_internal_machine_api_pb_machine_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_internal_machine_api_pb_machine_proto_msgTypes = make([]protoimpl.MessageInfo, 14)
 var file_internal_machine_api_pb_machine_proto_goTypes = []any{
 	(*MachineInfo)(nil),                // 0: api.MachineInfo
 	(*NetworkConfig)(nil),              // 1: api.NetworkConfig
@@ -861,49 +1004,57 @@ var file_internal_machine_api_pb_machine_proto_goTypes = []any{
 	(*InitClusterRequest)(nil),         // 3: api.InitClusterRequest
 	(*InitClusterResponse)(nil),        // 4: api.InitClusterResponse
 	(*JoinClusterRequest)(nil),         // 5: api.JoinClusterRequest
-	(*TokenResponse)(nil),              // 6: api.TokenResponse
+	(*InspectMachineResponse)(nil),     // 6: api.InspectMachineResponse
-	(*ResetRequest)(nil),               // 7: api.ResetRequest
+	(*MachineDetails)(nil),             // 7: api.MachineDetails
-	(*Service)(nil),                    // 8: api.Service
+	(*TokenResponse)(nil),              // 8: api.TokenResponse
-	(*InspectServiceRequest)(nil),      // 9: api.InspectServiceRequest
+	(*ResetRequest)(nil),               // 9: api.ResetRequest
-	(*InspectServiceResponse)(nil),     // 10: api.InspectServiceResponse
+	(*Service)(nil),                    // 10: api.Service
-	(*Service_Container)(nil),          // 11: api.Service.Container
+	(*InspectServiceRequest)(nil),      // 11: api.InspectServiceRequest
-	(*IP)(nil),                         // 12: api.IP
+	(*InspectServiceResponse)(nil),     // 12: api.InspectServiceResponse
-	(*IPPrefix)(nil),                   // 13: api.IPPrefix
+	(*Service_Container)(nil),          // 13: api.Service.Container
-	(*IPPort)(nil),                     // 14: api.IPPort
+	(*IP)(nil),                         // 14: api.IP
-	(*emptypb.Empty)(nil),              // 15: google.protobuf.Empty
+	(*IPPrefix)(nil),                   // 15: api.IPPrefix
+	(*IPPort)(nil),                     // 16: api.IPPort
+	(*Metadata)(nil),                   // 17: api.Metadata
+	(*emptypb.Empty)(nil),              // 18: google.protobuf.Empty
 }
 var file_internal_machine_api_pb_machine_proto_depIdxs = []int32{
 	1,  // 0: api.MachineInfo.network:type_name -> api.NetworkConfig
-	12, // 1: api.MachineInfo.public_ip:type_name -> api.IP
+	14, // 1: api.MachineInfo.public_ip:type_name -> api.IP
-	13, // 2: api.NetworkConfig.subnet:type_name -> api.IPPrefix
+	15, // 2: api.NetworkConfig.subnet:type_name -> api.IPPrefix
-	12, // 3: api.NetworkConfig.management_ip:type_name -> api.IP
+	14, // 3: api.NetworkConfig.management_ip:type_name -> api.IP
-	14, // 4: api.NetworkConfig.endpoints:type_name -> api.IPPort
+	16, // 4: api.NetworkConfig.endpoints:type_name -> api.IPPort
-	13, // 5: api.InitClusterRequest.network:type_name -> api.IPPrefix
+	15, // 5: api.InitClusterRequest.network:type_name -> api.IPPrefix
-	12, // 6: api.InitClusterRequest.public_ip:type_name -> api.IP
+	14, // 6: api.InitClusterRequest.public_ip:type_name -> api.IP
 	0,  // 7: api.InitClusterResponse.machine:type_name -> api.MachineInfo
 	0,  // 8: api.JoinClusterRequest.machine:type_name -> api.MachineInfo
 	0,  // 9: api.JoinClusterRequest.other_machines:type_name -> api.MachineInfo
-	11, // 10: api.Service.containers:type_name -> api.Service.Container
+	7,  // 10: api.InspectMachineResponse.machines:type_name -> api.MachineDetails
-	8,  // 11: api.InspectServiceResponse.service:type_name -> api.Service
+	17, // 11: api.MachineDetails.metadata:type_name -> api.Metadata
-	15, // 12: api.Machine.CheckPrerequisites:input_type -> google.protobuf.Empty
+	0,  // 12: api.MachineDetails.machine:type_name -> api.MachineInfo
-	3,  // 13: api.Machine.InitCluster:input_type -> api.InitClusterRequest
+	13, // 13: api.Service.containers:type_name -> api.Service.Container
-	5,  // 14: api.Machine.JoinCluster:input_type -> api.JoinClusterRequest
+	10, // 14: api.InspectServiceResponse.service:type_name -> api.Service
-	15, // 15: api.Machine.Token:input_type -> google.protobuf.Empty
+	18, // 15: api.Machine.CheckPrerequisites:input_type -> google.protobuf.Empty
-	15, // 16: api.Machine.Inspect:input_type -> google.protobuf.Empty
+	3,  // 16: api.Machine.InitCluster:input_type -> api.InitClusterRequest
-	7,  // 17: api.Machine.Reset:input_type -> api.ResetRequest
+	5,  // 17: api.Machine.JoinCluster:input_type -> api.JoinClusterRequest
-	9,  // 18: api.Machine.InspectService:input_type -> api.InspectServiceRequest
+	18, // 18: api.Machine.Token:input_type -> google.protobuf.Empty
-	2,  // 19: api.Machine.CheckPrerequisites:output_type -> api.CheckPrerequisitesResponse
+	18, // 19: api.Machine.Inspect:input_type -> google.protobuf.Empty
-	4,  // 20: api.Machine.InitCluster:output_type -> api.InitClusterResponse
+	18, // 20: api.Machine.InspectMachine:input_type -> google.protobuf.Empty
-	15, // 21: api.Machine.JoinCluster:output_type -> google.protobuf.Empty
+	9,  // 21: api.Machine.Reset:input_type -> api.ResetRequest
-	6,  // 22: api.Machine.Token:output_type -> api.TokenResponse
+	11, // 22: api.Machine.InspectService:input_type -> api.InspectServiceRequest
-	0,  // 23: api.Machine.Inspect:output_type -> api.MachineInfo
+	2,  // 23: api.Machine.CheckPrerequisites:output_type -> api.CheckPrerequisitesResponse
-	15, // 24: api.Machine.Reset:output_type -> google.protobuf.Empty
+	4,  // 24: api.Machine.InitCluster:output_type -> api.InitClusterResponse
-	10, // 25: api.Machine.InspectService:output_type -> api.InspectServiceResponse
+	18, // 25: api.Machine.JoinCluster:output_type -> google.protobuf.Empty
-	19, // [19:26] is the sub-list for method output_type
+	8,  // 26: api.Machine.Token:output_type -> api.TokenResponse
-	12, // [12:19] is the sub-list for method input_type
+	0,  // 27: api.Machine.Inspect:output_type -> api.MachineInfo
-	12, // [12:12] is the sub-list for extension type_name
+	6,  // 28: api.Machine.InspectMachine:output_type -> api.InspectMachineResponse
-	12, // [12:12] is the sub-list for extension extendee
+	18, // 29: api.Machine.Reset:output_type -> google.protobuf.Empty
-	0,  // [0:12] is the sub-list for field type_name
+	12, // 30: api.Machine.InspectService:output_type -> api.InspectServiceResponse
+	23, // [23:31] is the sub-list for method output_type
+	15, // [15:23] is the sub-list for method input_type
+	15, // [15:15] is the sub-list for extension type_name
+	15, // [15:15] is the sub-list for extension extendee
+	0,  // [0:15] is the sub-list for field type_name
 }
 
 func init() { file_internal_machine_api_pb_machine_proto_init() }
@@ -986,7 +1137,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[6].Exporter = func(v any, i int) any {
-			switch v := v.(*TokenResponse); i {
+			switch v := v.(*InspectMachineResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -998,7 +1149,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[7].Exporter = func(v any, i int) any {
-			switch v := v.(*ResetRequest); i {
+			switch v := v.(*MachineDetails); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1010,7 +1161,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[8].Exporter = func(v any, i int) any {
-			switch v := v.(*Service); i {
+			switch v := v.(*TokenResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1022,7 +1173,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[9].Exporter = func(v any, i int) any {
-			switch v := v.(*InspectServiceRequest); i {
+			switch v := v.(*ResetRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1034,7 +1185,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[10].Exporter = func(v any, i int) any {
-			switch v := v.(*InspectServiceResponse); i {
+			switch v := v.(*Service); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1046,6 +1197,30 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[11].Exporter = func(v any, i int) any {
+			switch v := v.(*InspectServiceRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_machine_proto_msgTypes[12].Exporter = func(v any, i int) any {
+			switch v := v.(*InspectServiceResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_machine_proto_msgTypes[13].Exporter = func(v any, i int) any {
 			switch v := v.(*Service_Container); i {
 			case 0:
 				return &v.state
@@ -1068,7 +1243,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_internal_machine_api_pb_machine_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   12,
+			NumMessages:   14,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

internal/machine/api/pb/machine.proto

@@ -13,7 +13,10 @@ service Machine {
   rpc InitCluster(InitClusterRequest) returns (InitClusterResponse);
   rpc JoinCluster(JoinClusterRequest) returns (google.protobuf.Empty);
   rpc Token(google.protobuf.Empty) returns (TokenResponse);
+  // Deprecated: use InspectMachine instead.
   rpc Inspect(google.protobuf.Empty) returns (MachineInfo);
+  // InspectMachine retrieves detailed information about the machine. Supports broadcasting to multiple machines.
+  rpc InspectMachine(google.protobuf.Empty) returns (InspectMachineResponse);
   // Reset restores the machine to a clean state, removing all cluster-related configuration and data.
   rpc Reset(ResetRequest) returns (google.protobuf.Empty);
 
@@ -58,6 +61,20 @@ message InitClusterResponse {
 message JoinClusterRequest {
   MachineInfo machine = 1;
   repeated MachineInfo other_machines = 3;
+  // Minimum store database version the new machine should sync to before starting cluster operations.
+  int64 min_store_db_version = 4;
+}
+
+message InspectMachineResponse {
+  // Must contain only one repeated messages field to allow broadcasting InspectMachine requests to multiple machines.
+  repeated MachineDetails machines = 1;
+}
+
+message MachineDetails {
+  Metadata metadata = 1;
+  MachineInfo machine = 2;
+  // Current Corrosion cr-sqlite database version (Lamport timestamp) of the cluster store.
+  int64 store_db_version = 3;
 }
 
 message TokenResponse {

internal/machine/api/pb/machine_grpc.pb.go

@@ -25,6 +25,7 @@ const (
 	Machine_JoinCluster_FullMethodName        = "/api.Machine/JoinCluster"
 	Machine_Token_FullMethodName              = "/api.Machine/Token"
 	Machine_Inspect_FullMethodName            = "/api.Machine/Inspect"
+	Machine_InspectMachine_FullMethodName     = "/api.Machine/InspectMachine"
 	Machine_Reset_FullMethodName              = "/api.Machine/Reset"
 	Machine_InspectService_FullMethodName     = "/api.Machine/InspectService"
 )
@@ -38,7 +39,10 @@ type MachineClient interface {
 	InitCluster(ctx context.Context, in *InitClusterRequest, opts ...grpc.CallOption) (*InitClusterResponse, error)
 	JoinCluster(ctx context.Context, in *JoinClusterRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	Token(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*TokenResponse, error)
+	// Deprecated: use InspectMachine instead.
 	Inspect(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*MachineInfo, error)
+	// InspectMachine retrieves detailed information about the machine. Supports broadcasting to multiple machines.
+	InspectMachine(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*InspectMachineResponse, error)
 	// Reset restores the machine to a clean state, removing all cluster-related configuration and data.
 	Reset(ctx context.Context, in *ResetRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	InspectService(ctx context.Context, in *InspectServiceRequest, opts ...grpc.CallOption) (*InspectServiceResponse, error)
@@ -102,6 +106,16 @@ func (c *machineClient) Inspect(ctx context.Context, in *emptypb.Empty, opts ...
 	return out, nil
 }
 
+func (c *machineClient) InspectMachine(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*InspectMachineResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(InspectMachineResponse)
+	err := c.cc.Invoke(ctx, Machine_InspectMachine_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *machineClient) Reset(ctx context.Context, in *ResetRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(emptypb.Empty)
@@ -131,7 +145,10 @@ type MachineServer interface {
 	InitCluster(context.Context, *InitClusterRequest) (*InitClusterResponse, error)
 	JoinCluster(context.Context, *JoinClusterRequest) (*emptypb.Empty, error)
 	Token(context.Context, *emptypb.Empty) (*TokenResponse, error)
+	// Deprecated: use InspectMachine instead.
 	Inspect(context.Context, *emptypb.Empty) (*MachineInfo, error)
+	// InspectMachine retrieves detailed information about the machine. Supports broadcasting to multiple machines.
+	InspectMachine(context.Context, *emptypb.Empty) (*InspectMachineResponse, error)
 	// Reset restores the machine to a clean state, removing all cluster-related configuration and data.
 	Reset(context.Context, *ResetRequest) (*emptypb.Empty, error)
 	InspectService(context.Context, *InspectServiceRequest) (*InspectServiceResponse, error)
@@ -160,6 +177,9 @@ func (UnimplementedMachineServer) Token(context.Context, *emptypb.Empty) (*Token
 func (UnimplementedMachineServer) Inspect(context.Context, *emptypb.Empty) (*MachineInfo, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Inspect not implemented")
 }
+func (UnimplementedMachineServer) InspectMachine(context.Context, *emptypb.Empty) (*InspectMachineResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method InspectMachine not implemented")
+}
 func (UnimplementedMachineServer) Reset(context.Context, *ResetRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Reset not implemented")
 }
@@ -277,6 +297,24 @@ func _Machine_Inspect_Handler(srv interface{}, ctx context.Context, dec func(int
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Machine_InspectMachine_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(emptypb.Empty)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MachineServer).InspectMachine(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Machine_InspectMachine_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MachineServer).InspectMachine(ctx, req.(*emptypb.Empty))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Machine_Reset_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(ResetRequest)
 	if err := dec(in); err != nil {
@@ -340,6 +378,10 @@ var Machine_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Inspect",
 			Handler:    _Machine_Inspect_Handler,
 		},
+		{
+			MethodName: "InspectMachine",
+			Handler:    _Machine_InspectMachine_Handler,
+		},
 		{
 			MethodName: "Reset",
 			Handler:    _Machine_Reset_Handler,

internal/machine/machine.go

@@ -792,6 +792,7 @@ func (m *Machine) JoinCluster(_ context.Context, req *pb.JoinClusterRequest) (*e
 		PrivateKey:   m.state.Network.PrivateKey,
 		PublicKey:    m.state.Network.PublicKey,
 	}
+	m.state.MinStoreDBVersion = req.MinStoreDbVersion
 
 	// Build a peers config from other cluster machines.
 	m.state.Network.Peers = make([]network.PeerConfig, 0, len(req.OtherMachines))
@@ -864,6 +865,7 @@ func (m *Machine) Token(_ context.Context, _ *emptypb.Empty) (*pb.TokenResponse,
 	return &pb.TokenResponse{Token: tokenStr}, nil
 }
 
+// Deprecated: use InspectMachine instead.
 func (m *Machine) Inspect(_ context.Context, _ *emptypb.Empty) (*pb.MachineInfo, error) {
 	return &pb.MachineInfo{
 		Id:   m.state.ID,
@@ -876,6 +878,31 @@ func (m *Machine) Inspect(_ context.Context, _ *emptypb.Empty) (*pb.MachineInfo,
 	}, nil
 }
 
+func (m *Machine) InspectMachine(ctx context.Context, _ *emptypb.Empty) (*pb.InspectMachineResponse, error) {
+	dbVersion, err := m.store.DBVersion(ctx)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "get database version of the cluster store: %v", err)
+	}
+
+	return &pb.InspectMachineResponse{
+		Machines: []*pb.MachineDetails{
+			{
+				// Metadata is injected by the gRPC proxy.
+				Machine: &pb.MachineInfo{
+					Id:   m.state.ID,
+					Name: m.state.Name,
+					Network: &pb.NetworkConfig{
+						Subnet:       pb.NewIPPrefix(m.state.Network.Subnet),
+						ManagementIp: pb.NewIP(m.state.Network.ManagementIP),
+						PublicKey:    m.state.Network.PublicKey,
+					},
+				},
+				StoreDbVersion: dbVersion,
+			},
+		},
+	}, nil
+}
+
 // IsNetworkReady returns true if the Docker network is ready for containers.
 func (m *Machine) IsNetworkReady() bool {
 	if !m.Initialised() {

internal/machine/state.go

@@ -24,6 +24,9 @@ type State struct {
 	Name string
 	// Network specifies the network configuration for this machine.
 	Network *network.Config
+	// MinStoreDBVersion is the latest database version of one of the existing cluster machines at the time this machine
+	// joined the cluster. The machine should sync to at least this version before starting any cluster operations.
+	MinStoreDBVersion int64 `json:",omitempty"`
 
 	// path is the file path config is read from and saved to.
 	path string

internal/machine/store/store.go

@@ -56,6 +56,25 @@ func (s *Store) Delete(ctx context.Context, key string) error {
 	return err
 }
 
+// DBVersion returns the current cr-sqlite database version (Lamport timestamp).
+func (s *Store) DBVersion(ctx context.Context) (int64, error) {
+	rows, err := s.corro.QueryContext(ctx, "SELECT crsql_db_version()")
+	if err != nil {
+		return 0, fmt.Errorf("query crsql_db_version(): %w", err)
+	}
+	defer rows.Close()
+
+	if !rows.Next() {
+		return 0, fmt.Errorf("no result from crsql_db_version()")
+	}
+
+	var version int64
+	if err = rows.Scan(&version); err != nil {
+		return 0, fmt.Errorf("scan db version: %w", err)
+	}
+	return version, nil
+}
+
 func (s *Store) CreateMachine(ctx context.Context, m *pb.MachineInfo) error {
 	mJSON, err := protojson.Marshal(m)
 	if err != nil {