feat(caddystorage): simplify CaddyStorage gRPC API to allow only one2one calls

.dockerignore

@@ -2,6 +2,7 @@
 *
 
 # Allow files and directories.
+!api/
 !cmd/
 !internal/
 !pkg/

AGENTS.md

@@ -188,7 +188,7 @@ uc context use <name>           # Switch context
 - **Package naming**: Use clear, descriptive names
 - **Error handling**: Wrap errors with context using `fmt.Errorf`
 - **Logging**: Use structured logging with levels
-- **gRPC**: Services defined in `internal/machine/api/pb/`
+- **gRPC**: Services defined in `api/pb/`
 
 ### Testing
 

HACKING.md

@@ -107,7 +107,7 @@ make lint-and-fix
 
 ## Code generation
 
-Update the generated Go code for the machine gRPC API after modifying `.proto` files:
+Update the generated Go code for the gRPC API after modifying files in [`api/pb`](./api/pb):
 
 ```shell
 mise run proto

api/pb/caddy.pb.go

@@ -0,0 +1,174 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.34.2
+// 	protoc        v5.27.3
+// source: api/pb/caddy.proto
+
+package pb
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type GetCaddyConfigResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The generated Caddyfile content.
+	Caddyfile string `protobuf:"bytes,1,opt,name=caddyfile,proto3" json:"caddyfile,omitempty"`
+	// Timestamp when the config was last modified.
+	ModifiedAt *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=modified_at,json=modifiedAt,proto3" json:"modified_at,omitempty"`
+}
+
+func (x *GetCaddyConfigResponse) Reset() {
+	*x = GetCaddyConfigResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetCaddyConfigResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetCaddyConfigResponse) ProtoMessage() {}
+
+func (x *GetCaddyConfigResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_proto_msgTypes[0]
+	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 GetCaddyConfigResponse.ProtoReflect.Descriptor instead.
+func (*GetCaddyConfigResponse) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *GetCaddyConfigResponse) GetCaddyfile() string {
+	if x != nil {
+		return x.Caddyfile
+	}
+	return ""
+}
+
+func (x *GetCaddyConfigResponse) GetModifiedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.ModifiedAt
+	}
+	return nil
+}
+
+var File_api_pb_caddy_proto protoreflect.FileDescriptor
+
+var file_api_pb_caddy_proto_rawDesc = []byte{
+	0x0a, 0x12, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62, 0x2f, 0x63, 0x61, 0x64, 0x64, 0x79, 0x2e, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x12, 0x03, 0x61, 0x70, 0x69, 0x1a, 0x1b, 0x67, 0x6f, 0x6f, 0x67, 0x6c,
+	0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x65, 0x6d, 0x70, 0x74, 0x79,
+	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d,
+	0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x73, 0x0a, 0x16, 0x47, 0x65, 0x74, 0x43, 0x61,
+	0x64, 0x64, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73,
+	0x65, 0x12, 0x1c, 0x0a, 0x09, 0x63, 0x61, 0x64, 0x64, 0x79, 0x66, 0x69, 0x6c, 0x65, 0x18, 0x01,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x63, 0x61, 0x64, 0x64, 0x79, 0x66, 0x69, 0x6c, 0x65, 0x12,
+	0x3b, 0x0a, 0x0b, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x5f, 0x61, 0x74, 0x18, 0x02,
+	0x20, 0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x54, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70,
+	0x52, 0x0a, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x41, 0x74, 0x32, 0x49, 0x0a, 0x05,
+	0x43, 0x61, 0x64, 0x64, 0x79, 0x12, 0x40, 0x0a, 0x09, 0x47, 0x65, 0x74, 0x43, 0x6f, 0x6e, 0x66,
+	0x69, 0x67, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x1b, 0x2e, 0x61, 0x70, 0x69,
+	0x2e, 0x47, 0x65, 0x74, 0x43, 0x61, 0x64, 0x64, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52,
+	0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x42, 0x26, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75,
+	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x70, 0x73, 0x76, 0x69, 0x64, 0x65, 0x72, 0x73, 0x6b, 0x69,
+	0x2f, 0x75, 0x6e, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_api_pb_caddy_proto_rawDescOnce sync.Once
+	file_api_pb_caddy_proto_rawDescData = file_api_pb_caddy_proto_rawDesc
+)
+
+func file_api_pb_caddy_proto_rawDescGZIP() []byte {
+	file_api_pb_caddy_proto_rawDescOnce.Do(func() {
+		file_api_pb_caddy_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_pb_caddy_proto_rawDescData)
+	})
+	return file_api_pb_caddy_proto_rawDescData
+}
+
+var file_api_pb_caddy_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_api_pb_caddy_proto_goTypes = []any{
+	(*GetCaddyConfigResponse)(nil), // 0: api.GetCaddyConfigResponse
+	(*timestamppb.Timestamp)(nil),  // 1: google.protobuf.Timestamp
+	(*emptypb.Empty)(nil),          // 2: google.protobuf.Empty
+}
+var file_api_pb_caddy_proto_depIdxs = []int32{
+	1, // 0: api.GetCaddyConfigResponse.modified_at:type_name -> google.protobuf.Timestamp
+	2, // 1: api.Caddy.GetConfig:input_type -> google.protobuf.Empty
+	0, // 2: api.Caddy.GetConfig:output_type -> api.GetCaddyConfigResponse
+	2, // [2:3] is the sub-list for method output_type
+	1, // [1:2] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_api_pb_caddy_proto_init() }
+func file_api_pb_caddy_proto_init() {
+	if File_api_pb_caddy_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_api_pb_caddy_proto_msgTypes[0].Exporter = func(v any, i int) any {
+			switch v := v.(*GetCaddyConfigResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_api_pb_caddy_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_api_pb_caddy_proto_goTypes,
+		DependencyIndexes: file_api_pb_caddy_proto_depIdxs,
+		MessageInfos:      file_api_pb_caddy_proto_msgTypes,
+	}.Build()
+	File_api_pb_caddy_proto = out.File
+	file_api_pb_caddy_proto_rawDesc = nil
+	file_api_pb_caddy_proto_goTypes = nil
+	file_api_pb_caddy_proto_depIdxs = nil
+}

api/pb/caddy.proto

@@ -2,7 +2,7 @@ syntax = "proto3";
 
 package api;
 
-option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
+option go_package = "github.com/psviderski/uncloud/api/pb";
 
 import "google/protobuf/empty.proto";
 import "google/protobuf/timestamp.proto";
@@ -17,4 +17,4 @@ message GetCaddyConfigResponse {
   string caddyfile = 1;
   // Timestamp when the config was last modified.
   google.protobuf.Timestamp modified_at = 2;
-}
+}

api/pb/caddy_grpc.pb.go

@@ -2,7 +2,7 @@
 // versions:
 // - protoc-gen-go-grpc v1.5.1
 // - protoc             v5.27.3
-// source: internal/machine/api/pb/caddy.proto
+// source: api/pb/caddy.proto
 
 package pb
 
@@ -120,5 +120,5 @@ var Caddy_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "internal/machine/api/pb/caddy.proto",
+	Metadata: "api/pb/caddy.proto",
 }

api/pb/caddy_storage.pb.go

@@ -0,0 +1,689 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.34.2
+// 	protoc        v5.27.3
+// source: api/pb/caddy_storage.proto
+
+package pb
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type StoreCaddyStorageRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key   string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *StoreCaddyStorageRequest) Reset() {
+	*x = StoreCaddyStorageRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StoreCaddyStorageRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StoreCaddyStorageRequest) ProtoMessage() {}
+
+func (x *StoreCaddyStorageRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_proto_msgTypes[0]
+	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 StoreCaddyStorageRequest.ProtoReflect.Descriptor instead.
+func (*StoreCaddyStorageRequest) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *StoreCaddyStorageRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *StoreCaddyStorageRequest) GetValue() []byte {
+	if x != nil {
+		return x.Value
+	}
+	return nil
+}
+
+type LoadCaddyStorageRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (x *LoadCaddyStorageRequest) Reset() {
+	*x = LoadCaddyStorageRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LoadCaddyStorageRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LoadCaddyStorageRequest) ProtoMessage() {}
+
+func (x *LoadCaddyStorageRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_proto_msgTypes[1]
+	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 LoadCaddyStorageRequest.ProtoReflect.Descriptor instead.
+func (*LoadCaddyStorageRequest) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *LoadCaddyStorageRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+type LoadCaddyStorageResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Value     []byte                 `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
+	UpdatedAt *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
+}
+
+func (x *LoadCaddyStorageResponse) Reset() {
+	*x = LoadCaddyStorageResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LoadCaddyStorageResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LoadCaddyStorageResponse) ProtoMessage() {}
+
+func (x *LoadCaddyStorageResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_proto_msgTypes[2]
+	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 LoadCaddyStorageResponse.ProtoReflect.Descriptor instead.
+func (*LoadCaddyStorageResponse) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *LoadCaddyStorageResponse) GetValue() []byte {
+	if x != nil {
+		return x.Value
+	}
+	return nil
+}
+
+func (x *LoadCaddyStorageResponse) GetUpdatedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.UpdatedAt
+	}
+	return nil
+}
+
+type DeleteCaddyStorageRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (x *DeleteCaddyStorageRequest) Reset() {
+	*x = DeleteCaddyStorageRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteCaddyStorageRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteCaddyStorageRequest) ProtoMessage() {}
+
+func (x *DeleteCaddyStorageRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_proto_msgTypes[3]
+	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 DeleteCaddyStorageRequest.ProtoReflect.Descriptor instead.
+func (*DeleteCaddyStorageRequest) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *DeleteCaddyStorageRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+type ListCaddyStorageRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Prefix    string `protobuf:"bytes,1,opt,name=prefix,proto3" json:"prefix,omitempty"`
+	Recursive bool   `protobuf:"varint,2,opt,name=recursive,proto3" json:"recursive,omitempty"`
+}
+
+func (x *ListCaddyStorageRequest) Reset() {
+	*x = ListCaddyStorageRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListCaddyStorageRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListCaddyStorageRequest) ProtoMessage() {}
+
+func (x *ListCaddyStorageRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_proto_msgTypes[4]
+	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 ListCaddyStorageRequest.ProtoReflect.Descriptor instead.
+func (*ListCaddyStorageRequest) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *ListCaddyStorageRequest) GetPrefix() string {
+	if x != nil {
+		return x.Prefix
+	}
+	return ""
+}
+
+func (x *ListCaddyStorageRequest) GetRecursive() bool {
+	if x != nil {
+		return x.Recursive
+	}
+	return false
+}
+
+type ListCaddyStorageResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Keys []string `protobuf:"bytes,1,rep,name=keys,proto3" json:"keys,omitempty"`
+}
+
+func (x *ListCaddyStorageResponse) Reset() {
+	*x = ListCaddyStorageResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListCaddyStorageResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListCaddyStorageResponse) ProtoMessage() {}
+
+func (x *ListCaddyStorageResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_proto_msgTypes[5]
+	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 ListCaddyStorageResponse.ProtoReflect.Descriptor instead.
+func (*ListCaddyStorageResponse) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *ListCaddyStorageResponse) GetKeys() []string {
+	if x != nil {
+		return x.Keys
+	}
+	return nil
+}
+
+type StatCaddyStorageRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (x *StatCaddyStorageRequest) Reset() {
+	*x = StatCaddyStorageRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatCaddyStorageRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StatCaddyStorageRequest) ProtoMessage() {}
+
+func (x *StatCaddyStorageRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_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 StatCaddyStorageRequest.ProtoReflect.Descriptor instead.
+func (*StatCaddyStorageRequest) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *StatCaddyStorageRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+type StatCaddyStorageResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key        string                 `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	UpdatedAt  *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
+	Size       int64                  `protobuf:"varint,3,opt,name=size,proto3" json:"size,omitempty"`
+	IsTerminal bool                   `protobuf:"varint,4,opt,name=is_terminal,json=isTerminal,proto3" json:"is_terminal,omitempty"`
+}
+
+func (x *StatCaddyStorageResponse) Reset() {
+	*x = StatCaddyStorageResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_pb_caddy_storage_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatCaddyStorageResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StatCaddyStorageResponse) ProtoMessage() {}
+
+func (x *StatCaddyStorageResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_api_pb_caddy_storage_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 StatCaddyStorageResponse.ProtoReflect.Descriptor instead.
+func (*StatCaddyStorageResponse) Descriptor() ([]byte, []int) {
+	return file_api_pb_caddy_storage_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *StatCaddyStorageResponse) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *StatCaddyStorageResponse) GetUpdatedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.UpdatedAt
+	}
+	return nil
+}
+
+func (x *StatCaddyStorageResponse) GetSize() int64 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
+func (x *StatCaddyStorageResponse) GetIsTerminal() bool {
+	if x != nil {
+		return x.IsTerminal
+	}
+	return false
+}
+
+var File_api_pb_caddy_storage_proto protoreflect.FileDescriptor
+
+var file_api_pb_caddy_storage_proto_rawDesc = []byte{
+	0x0a, 0x1a, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62, 0x2f, 0x63, 0x61, 0x64, 0x64, 0x79, 0x5f, 0x73,
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+	0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_api_pb_caddy_storage_proto_rawDescOnce sync.Once
+	file_api_pb_caddy_storage_proto_rawDescData = file_api_pb_caddy_storage_proto_rawDesc
+)
+
+func file_api_pb_caddy_storage_proto_rawDescGZIP() []byte {
+	file_api_pb_caddy_storage_proto_rawDescOnce.Do(func() {
+		file_api_pb_caddy_storage_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_pb_caddy_storage_proto_rawDescData)
+	})
+	return file_api_pb_caddy_storage_proto_rawDescData
+}
+
+var file_api_pb_caddy_storage_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_api_pb_caddy_storage_proto_goTypes = []any{
+	(*StoreCaddyStorageRequest)(nil),  // 0: api.StoreCaddyStorageRequest
+	(*LoadCaddyStorageRequest)(nil),   // 1: api.LoadCaddyStorageRequest
+	(*LoadCaddyStorageResponse)(nil),  // 2: api.LoadCaddyStorageResponse
+	(*DeleteCaddyStorageRequest)(nil), // 3: api.DeleteCaddyStorageRequest
+	(*ListCaddyStorageRequest)(nil),   // 4: api.ListCaddyStorageRequest
+	(*ListCaddyStorageResponse)(nil),  // 5: api.ListCaddyStorageResponse
+	(*StatCaddyStorageRequest)(nil),   // 6: api.StatCaddyStorageRequest
+	(*StatCaddyStorageResponse)(nil),  // 7: api.StatCaddyStorageResponse
+	(*timestamppb.Timestamp)(nil),     // 8: google.protobuf.Timestamp
+	(*emptypb.Empty)(nil),             // 9: google.protobuf.Empty
+}
+var file_api_pb_caddy_storage_proto_depIdxs = []int32{
+	8, // 0: api.LoadCaddyStorageResponse.updated_at:type_name -> google.protobuf.Timestamp
+	8, // 1: api.StatCaddyStorageResponse.updated_at:type_name -> google.protobuf.Timestamp
+	0, // 2: api.CaddyStorage.Store:input_type -> api.StoreCaddyStorageRequest
+	1, // 3: api.CaddyStorage.Load:input_type -> api.LoadCaddyStorageRequest
+	3, // 4: api.CaddyStorage.Delete:input_type -> api.DeleteCaddyStorageRequest
+	4, // 5: api.CaddyStorage.List:input_type -> api.ListCaddyStorageRequest
+	6, // 6: api.CaddyStorage.Stat:input_type -> api.StatCaddyStorageRequest
+	9, // 7: api.CaddyStorage.Store:output_type -> google.protobuf.Empty
+	2, // 8: api.CaddyStorage.Load:output_type -> api.LoadCaddyStorageResponse
+	9, // 9: api.CaddyStorage.Delete:output_type -> google.protobuf.Empty
+	5, // 10: api.CaddyStorage.List:output_type -> api.ListCaddyStorageResponse
+	7, // 11: api.CaddyStorage.Stat:output_type -> api.StatCaddyStorageResponse
+	7, // [7:12] is the sub-list for method output_type
+	2, // [2:7] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
+}
+
+func init() { file_api_pb_caddy_storage_proto_init() }
+func file_api_pb_caddy_storage_proto_init() {
+	if File_api_pb_caddy_storage_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_api_pb_caddy_storage_proto_msgTypes[0].Exporter = func(v any, i int) any {
+			switch v := v.(*StoreCaddyStorageRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_pb_caddy_storage_proto_msgTypes[1].Exporter = func(v any, i int) any {
+			switch v := v.(*LoadCaddyStorageRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_pb_caddy_storage_proto_msgTypes[2].Exporter = func(v any, i int) any {
+			switch v := v.(*LoadCaddyStorageResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_pb_caddy_storage_proto_msgTypes[3].Exporter = func(v any, i int) any {
+			switch v := v.(*DeleteCaddyStorageRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_pb_caddy_storage_proto_msgTypes[4].Exporter = func(v any, i int) any {
+			switch v := v.(*ListCaddyStorageRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_pb_caddy_storage_proto_msgTypes[5].Exporter = func(v any, i int) any {
+			switch v := v.(*ListCaddyStorageResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_pb_caddy_storage_proto_msgTypes[6].Exporter = func(v any, i int) any {
+			switch v := v.(*StatCaddyStorageRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_pb_caddy_storage_proto_msgTypes[7].Exporter = func(v any, i int) any {
+			switch v := v.(*StatCaddyStorageResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_api_pb_caddy_storage_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   8,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_api_pb_caddy_storage_proto_goTypes,
+		DependencyIndexes: file_api_pb_caddy_storage_proto_depIdxs,
+		MessageInfos:      file_api_pb_caddy_storage_proto_msgTypes,
+	}.Build()
+	File_api_pb_caddy_storage_proto = out.File
+	file_api_pb_caddy_storage_proto_rawDesc = nil
+	file_api_pb_caddy_storage_proto_goTypes = nil
+	file_api_pb_caddy_storage_proto_depIdxs = nil
+}

api/pb/caddy_storage.proto

@@ -0,0 +1,59 @@
+syntax = "proto3";
+
+package api;
+
+option go_package = "github.com/psviderski/uncloud/api/pb";
+
+import "google/protobuf/empty.proto";
+import "google/protobuf/timestamp.proto";
+
+// CaddyStorage exposes the CertMagic storage operations backed by the distributed cluster store.
+// Each request operates on the receiving machine's store replica. Callers that need replication to catch up before
+// reading should capture store versions with Machine.InspectMachine and call Machine.WaitForStoreVersion on the
+// receiving machine, subject to that RPC's data-availability limitations (see WaitForStoreVersion docs).
+// See Storage interface in https://github.com/caddyserver/certmagic/blob/master/storage.go.
+service CaddyStorage {
+  rpc Store(StoreCaddyStorageRequest) returns (google.protobuf.Empty);
+  rpc Load(LoadCaddyStorageRequest) returns (LoadCaddyStorageResponse);
+  rpc Delete(DeleteCaddyStorageRequest) returns (google.protobuf.Empty);
+  rpc List(ListCaddyStorageRequest) returns (ListCaddyStorageResponse);
+  rpc Stat(StatCaddyStorageRequest) returns (StatCaddyStorageResponse);
+}
+
+message StoreCaddyStorageRequest {
+  string key = 1;
+  bytes value = 2;
+}
+
+message LoadCaddyStorageRequest {
+  string key = 1;
+}
+
+message LoadCaddyStorageResponse {
+  bytes value = 1;
+  google.protobuf.Timestamp updated_at = 2;
+}
+
+message DeleteCaddyStorageRequest {
+  string key = 1;
+}
+
+message ListCaddyStorageRequest {
+  string prefix = 1;
+  bool recursive = 2;
+}
+
+message ListCaddyStorageResponse {
+  repeated string keys = 1;
+}
+
+message StatCaddyStorageRequest {
+  string key = 1;
+}
+
+message StatCaddyStorageResponse {
+  string key = 1;
+  google.protobuf.Timestamp updated_at = 2;
+  int64 size = 3;
+  bool is_terminal = 4;
+}

api/pb/caddy_storage_grpc.pb.go

@@ -0,0 +1,286 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.27.3
+// source: api/pb/caddy_storage.proto
+
+package pb
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	CaddyStorage_Store_FullMethodName  = "/api.CaddyStorage/Store"
+	CaddyStorage_Load_FullMethodName   = "/api.CaddyStorage/Load"
+	CaddyStorage_Delete_FullMethodName = "/api.CaddyStorage/Delete"
+	CaddyStorage_List_FullMethodName   = "/api.CaddyStorage/List"
+	CaddyStorage_Stat_FullMethodName   = "/api.CaddyStorage/Stat"
+)
+
+// CaddyStorageClient is the client API for CaddyStorage service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+//
+// CaddyStorage exposes the CertMagic storage operations backed by the distributed cluster store.
+// Each request operates on the receiving machine's store replica. Callers that need replication to catch up before
+// reading should capture store versions with Machine.InspectMachine and call Machine.WaitForStoreVersion on the
+// receiving machine, subject to that RPC's data-availability limitations (see WaitForStoreVersion docs).
+// See Storage interface in https://github.com/caddyserver/certmagic/blob/master/storage.go.
+type CaddyStorageClient interface {
+	Store(ctx context.Context, in *StoreCaddyStorageRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	Load(ctx context.Context, in *LoadCaddyStorageRequest, opts ...grpc.CallOption) (*LoadCaddyStorageResponse, error)
+	Delete(ctx context.Context, in *DeleteCaddyStorageRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	List(ctx context.Context, in *ListCaddyStorageRequest, opts ...grpc.CallOption) (*ListCaddyStorageResponse, error)
+	Stat(ctx context.Context, in *StatCaddyStorageRequest, opts ...grpc.CallOption) (*StatCaddyStorageResponse, error)
+}
+
+type caddyStorageClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewCaddyStorageClient(cc grpc.ClientConnInterface) CaddyStorageClient {
+	return &caddyStorageClient{cc}
+}
+
+func (c *caddyStorageClient) Store(ctx context.Context, in *StoreCaddyStorageRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, CaddyStorage_Store_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *caddyStorageClient) Load(ctx context.Context, in *LoadCaddyStorageRequest, opts ...grpc.CallOption) (*LoadCaddyStorageResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(LoadCaddyStorageResponse)
+	err := c.cc.Invoke(ctx, CaddyStorage_Load_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *caddyStorageClient) Delete(ctx context.Context, in *DeleteCaddyStorageRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, CaddyStorage_Delete_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *caddyStorageClient) List(ctx context.Context, in *ListCaddyStorageRequest, opts ...grpc.CallOption) (*ListCaddyStorageResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(ListCaddyStorageResponse)
+	err := c.cc.Invoke(ctx, CaddyStorage_List_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *caddyStorageClient) Stat(ctx context.Context, in *StatCaddyStorageRequest, opts ...grpc.CallOption) (*StatCaddyStorageResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(StatCaddyStorageResponse)
+	err := c.cc.Invoke(ctx, CaddyStorage_Stat_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// CaddyStorageServer is the server API for CaddyStorage service.
+// All implementations must embed UnimplementedCaddyStorageServer
+// for forward compatibility.
+//
+// CaddyStorage exposes the CertMagic storage operations backed by the distributed cluster store.
+// Each request operates on the receiving machine's store replica. Callers that need replication to catch up before
+// reading should capture store versions with Machine.InspectMachine and call Machine.WaitForStoreVersion on the
+// receiving machine, subject to that RPC's data-availability limitations (see WaitForStoreVersion docs).
+// See Storage interface in https://github.com/caddyserver/certmagic/blob/master/storage.go.
+type CaddyStorageServer interface {
+	Store(context.Context, *StoreCaddyStorageRequest) (*emptypb.Empty, error)
+	Load(context.Context, *LoadCaddyStorageRequest) (*LoadCaddyStorageResponse, error)
+	Delete(context.Context, *DeleteCaddyStorageRequest) (*emptypb.Empty, error)
+	List(context.Context, *ListCaddyStorageRequest) (*ListCaddyStorageResponse, error)
+	Stat(context.Context, *StatCaddyStorageRequest) (*StatCaddyStorageResponse, error)
+	mustEmbedUnimplementedCaddyStorageServer()
+}
+
+// UnimplementedCaddyStorageServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedCaddyStorageServer struct{}
+
+func (UnimplementedCaddyStorageServer) Store(context.Context, *StoreCaddyStorageRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Store not implemented")
+}
+func (UnimplementedCaddyStorageServer) Load(context.Context, *LoadCaddyStorageRequest) (*LoadCaddyStorageResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Load not implemented")
+}
+func (UnimplementedCaddyStorageServer) Delete(context.Context, *DeleteCaddyStorageRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Delete not implemented")
+}
+func (UnimplementedCaddyStorageServer) List(context.Context, *ListCaddyStorageRequest) (*ListCaddyStorageResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method List not implemented")
+}
+func (UnimplementedCaddyStorageServer) Stat(context.Context, *StatCaddyStorageRequest) (*StatCaddyStorageResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Stat not implemented")
+}
+func (UnimplementedCaddyStorageServer) mustEmbedUnimplementedCaddyStorageServer() {}
+func (UnimplementedCaddyStorageServer) testEmbeddedByValue()                      {}
+
+// UnsafeCaddyStorageServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to CaddyStorageServer will
+// result in compilation errors.
+type UnsafeCaddyStorageServer interface {
+	mustEmbedUnimplementedCaddyStorageServer()
+}
+
+func RegisterCaddyStorageServer(s grpc.ServiceRegistrar, srv CaddyStorageServer) {
+	// If the following call pancis, it indicates UnimplementedCaddyStorageServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
+	s.RegisterService(&CaddyStorage_ServiceDesc, srv)
+}
+
+func _CaddyStorage_Store_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StoreCaddyStorageRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(CaddyStorageServer).Store(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: CaddyStorage_Store_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(CaddyStorageServer).Store(ctx, req.(*StoreCaddyStorageRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _CaddyStorage_Load_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(LoadCaddyStorageRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(CaddyStorageServer).Load(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: CaddyStorage_Load_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(CaddyStorageServer).Load(ctx, req.(*LoadCaddyStorageRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _CaddyStorage_Delete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteCaddyStorageRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(CaddyStorageServer).Delete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: CaddyStorage_Delete_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(CaddyStorageServer).Delete(ctx, req.(*DeleteCaddyStorageRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _CaddyStorage_List_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListCaddyStorageRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(CaddyStorageServer).List(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: CaddyStorage_List_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(CaddyStorageServer).List(ctx, req.(*ListCaddyStorageRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _CaddyStorage_Stat_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StatCaddyStorageRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(CaddyStorageServer).Stat(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: CaddyStorage_Stat_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(CaddyStorageServer).Stat(ctx, req.(*StatCaddyStorageRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// CaddyStorage_ServiceDesc is the grpc.ServiceDesc for CaddyStorage service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var CaddyStorage_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "api.CaddyStorage",
+	HandlerType: (*CaddyStorageServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Store",
+			Handler:    _CaddyStorage_Store_Handler,
+		},
+		{
+			MethodName: "Load",
+			Handler:    _CaddyStorage_Load_Handler,
+		},
+		{
+			MethodName: "Delete",
+			Handler:    _CaddyStorage_Delete_Handler,
+		},
+		{
+			MethodName: "List",
+			Handler:    _CaddyStorage_List_Handler,
+		},
+		{
+			MethodName: "Stat",
+			Handler:    _CaddyStorage_Stat_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "api/pb/caddy_storage.proto",
+}

api/pb/cluster.pb.go

@@ -2,7 +2,7 @@
 // versions:
 // 	protoc-gen-go v1.34.2
 // 	protoc        v5.27.3
-// source: internal/machine/api/pb/cluster.proto
+// source: api/pb/cluster.proto
 
 package pb
 
@@ -62,11 +62,11 @@ func (x MachineMember_MembershipState) String() string {
 }
 
 func (MachineMember_MembershipState) Descriptor() protoreflect.EnumDescriptor {
-	return file_internal_machine_api_pb_cluster_proto_enumTypes[0].Descriptor()
+	return file_api_pb_cluster_proto_enumTypes[0].Descriptor()
 }
 
 func (MachineMember_MembershipState) Type() protoreflect.EnumType {
-	return &file_internal_machine_api_pb_cluster_proto_enumTypes[0]
+	return &file_api_pb_cluster_proto_enumTypes[0]
 }
 
 func (x MachineMember_MembershipState) Number() protoreflect.EnumNumber {
@@ -75,7 +75,7 @@ func (x MachineMember_MembershipState) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use MachineMember_MembershipState.Descriptor instead.
 func (MachineMember_MembershipState) EnumDescriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{2, 0}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{2, 0}
 }
 
 type DNSRecord_RecordType int32
@@ -111,11 +111,11 @@ func (x DNSRecord_RecordType) String() string {
 }
 
 func (DNSRecord_RecordType) Descriptor() protoreflect.EnumDescriptor {
-	return file_internal_machine_api_pb_cluster_proto_enumTypes[1].Descriptor()
+	return file_api_pb_cluster_proto_enumTypes[1].Descriptor()
 }
 
 func (DNSRecord_RecordType) Type() protoreflect.EnumType {
-	return &file_internal_machine_api_pb_cluster_proto_enumTypes[1]
+	return &file_api_pb_cluster_proto_enumTypes[1]
 }
 
 func (x DNSRecord_RecordType) Number() protoreflect.EnumNumber {
@@ -124,7 +124,7 @@ func (x DNSRecord_RecordType) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use DNSRecord_RecordType.Descriptor instead.
 func (DNSRecord_RecordType) EnumDescriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{9, 0}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{9, 0}
 }
 
 type AddMachineRequest struct {
@@ -140,7 +140,7 @@ type AddMachineRequest struct {
 func (x *AddMachineRequest) Reset() {
 	*x = AddMachineRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[0]
+		mi := &file_api_pb_cluster_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -153,7 +153,7 @@ func (x *AddMachineRequest) String() string {
 func (*AddMachineRequest) ProtoMessage() {}
 
 func (x *AddMachineRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[0]
+	mi := &file_api_pb_cluster_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -166,7 +166,7 @@ func (x *AddMachineRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AddMachineRequest.ProtoReflect.Descriptor instead.
 func (*AddMachineRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{0}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *AddMachineRequest) GetName() string {
@@ -201,7 +201,7 @@ type AddMachineResponse struct {
 func (x *AddMachineResponse) Reset() {
 	*x = AddMachineResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[1]
+		mi := &file_api_pb_cluster_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -214,7 +214,7 @@ func (x *AddMachineResponse) String() string {
 func (*AddMachineResponse) ProtoMessage() {}
 
 func (x *AddMachineResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[1]
+	mi := &file_api_pb_cluster_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -227,7 +227,7 @@ func (x *AddMachineResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AddMachineResponse.ProtoReflect.Descriptor instead.
 func (*AddMachineResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{1}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *AddMachineResponse) GetMachine() *MachineInfo {
@@ -249,7 +249,7 @@ type MachineMember struct {
 func (x *MachineMember) Reset() {
 	*x = MachineMember{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[2]
+		mi := &file_api_pb_cluster_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -262,7 +262,7 @@ func (x *MachineMember) String() string {
 func (*MachineMember) ProtoMessage() {}
 
 func (x *MachineMember) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[2]
+	mi := &file_api_pb_cluster_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -275,7 +275,7 @@ func (x *MachineMember) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MachineMember.ProtoReflect.Descriptor instead.
 func (*MachineMember) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{2}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *MachineMember) GetMachine() *MachineInfo {
@@ -303,7 +303,7 @@ type ListMachinesResponse struct {
 func (x *ListMachinesResponse) Reset() {
 	*x = ListMachinesResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[3]
+		mi := &file_api_pb_cluster_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -316,7 +316,7 @@ func (x *ListMachinesResponse) String() string {
 func (*ListMachinesResponse) ProtoMessage() {}
 
 func (x *ListMachinesResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[3]
+	mi := &file_api_pb_cluster_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -329,7 +329,7 @@ func (x *ListMachinesResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMachinesResponse.ProtoReflect.Descriptor instead.
 func (*ListMachinesResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{3}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *ListMachinesResponse) GetMachines() []*MachineMember {
@@ -350,7 +350,7 @@ type RemoveMachineRequest struct {
 func (x *RemoveMachineRequest) Reset() {
 	*x = RemoveMachineRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[4]
+		mi := &file_api_pb_cluster_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -363,7 +363,7 @@ func (x *RemoveMachineRequest) String() string {
 func (*RemoveMachineRequest) ProtoMessage() {}
 
 func (x *RemoveMachineRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[4]
+	mi := &file_api_pb_cluster_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -376,7 +376,7 @@ func (x *RemoveMachineRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RemoveMachineRequest.ProtoReflect.Descriptor instead.
 func (*RemoveMachineRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{4}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *RemoveMachineRequest) GetId() string {
@@ -397,7 +397,7 @@ type Domain struct {
 func (x *Domain) Reset() {
 	*x = Domain{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+		mi := &file_api_pb_cluster_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -410,7 +410,7 @@ func (x *Domain) String() string {
 func (*Domain) ProtoMessage() {}
 
 func (x *Domain) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+	mi := &file_api_pb_cluster_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -423,7 +423,7 @@ func (x *Domain) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Domain.ProtoReflect.Descriptor instead.
 func (*Domain) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{5}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *Domain) GetName() string {
@@ -444,7 +444,7 @@ type ReserveDomainRequest struct {
 func (x *ReserveDomainRequest) Reset() {
 	*x = ReserveDomainRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+		mi := &file_api_pb_cluster_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -457,7 +457,7 @@ func (x *ReserveDomainRequest) String() string {
 func (*ReserveDomainRequest) ProtoMessage() {}
 
 func (x *ReserveDomainRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+	mi := &file_api_pb_cluster_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -470,7 +470,7 @@ func (x *ReserveDomainRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReserveDomainRequest.ProtoReflect.Descriptor instead.
 func (*ReserveDomainRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{6}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *ReserveDomainRequest) GetEndpoint() string {
@@ -491,7 +491,7 @@ type CreateDomainRecordsRequest struct {
 func (x *CreateDomainRecordsRequest) Reset() {
 	*x = CreateDomainRecordsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
+		mi := &file_api_pb_cluster_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -504,7 +504,7 @@ func (x *CreateDomainRecordsRequest) String() string {
 func (*CreateDomainRecordsRequest) ProtoMessage() {}
 
 func (x *CreateDomainRecordsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
+	mi := &file_api_pb_cluster_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -517,7 +517,7 @@ func (x *CreateDomainRecordsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateDomainRecordsRequest.ProtoReflect.Descriptor instead.
 func (*CreateDomainRecordsRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{7}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *CreateDomainRecordsRequest) GetRecords() []*DNSRecord {
@@ -538,7 +538,7 @@ type CreateDomainRecordsResponse struct {
 func (x *CreateDomainRecordsResponse) Reset() {
 	*x = CreateDomainRecordsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[8]
+		mi := &file_api_pb_cluster_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -551,7 +551,7 @@ func (x *CreateDomainRecordsResponse) String() string {
 func (*CreateDomainRecordsResponse) ProtoMessage() {}
 
 func (x *CreateDomainRecordsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[8]
+	mi := &file_api_pb_cluster_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -564,7 +564,7 @@ func (x *CreateDomainRecordsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateDomainRecordsResponse.ProtoReflect.Descriptor instead.
 func (*CreateDomainRecordsResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{8}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *CreateDomainRecordsResponse) GetRecords() []*DNSRecord {
@@ -587,7 +587,7 @@ type DNSRecord struct {
 func (x *DNSRecord) Reset() {
 	*x = DNSRecord{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[9]
+		mi := &file_api_pb_cluster_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -600,7 +600,7 @@ func (x *DNSRecord) String() string {
 func (*DNSRecord) ProtoMessage() {}
 
 func (x *DNSRecord) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[9]
+	mi := &file_api_pb_cluster_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -613,7 +613,7 @@ func (x *DNSRecord) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DNSRecord.ProtoReflect.Descriptor instead.
 func (*DNSRecord) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{9}
+	return file_api_pb_cluster_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *DNSRecord) GetName() string {
@@ -637,123 +637,119 @@ func (x *DNSRecord) GetValues() []string {
 	return nil
 }
 
-var File_internal_machine_api_pb_cluster_proto protoreflect.FileDescriptor
+var File_api_pb_cluster_proto protoreflect.FileDescriptor
 
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+	0x6f, 0x33,
 }
 
 var (
-	file_internal_machine_api_pb_cluster_proto_rawDescOnce sync.Once
-	file_internal_machine_api_pb_cluster_proto_rawDescData = file_internal_machine_api_pb_cluster_proto_rawDesc
+	file_api_pb_cluster_proto_rawDescOnce sync.Once
+	file_api_pb_cluster_proto_rawDescData = file_api_pb_cluster_proto_rawDesc
 )
 
-func file_internal_machine_api_pb_cluster_proto_rawDescGZIP() []byte {
-	file_internal_machine_api_pb_cluster_proto_rawDescOnce.Do(func() {
-		file_internal_machine_api_pb_cluster_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_machine_api_pb_cluster_proto_rawDescData)
+func file_api_pb_cluster_proto_rawDescGZIP() []byte {
+	file_api_pb_cluster_proto_rawDescOnce.Do(func() {
+		file_api_pb_cluster_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_pb_cluster_proto_rawDescData)
 	})
-	return file_internal_machine_api_pb_cluster_proto_rawDescData
+	return file_api_pb_cluster_proto_rawDescData
 }
 
-var file_internal_machine_api_pb_cluster_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_internal_machine_api_pb_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
-var file_internal_machine_api_pb_cluster_proto_goTypes = []any{
+var file_api_pb_cluster_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_api_pb_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
+var file_api_pb_cluster_proto_goTypes = []any{
 	(MachineMember_MembershipState)(0),  // 0: api.MachineMember.MembershipState
 	(DNSRecord_RecordType)(0),           // 1: api.DNSRecord.RecordType
 	(*AddMachineRequest)(nil),           // 2: api.AddMachineRequest
@@ -771,7 +767,7 @@ var file_internal_machine_api_pb_cluster_proto_goTypes = []any{
 	(*MachineInfo)(nil),                 // 14: api.MachineInfo
 	(*emptypb.Empty)(nil),               // 15: google.protobuf.Empty
 }
-var file_internal_machine_api_pb_cluster_proto_depIdxs = []int32{
+var file_api_pb_cluster_proto_depIdxs = []int32{
 	12, // 0: api.AddMachineRequest.network:type_name -> api.NetworkConfig
 	13, // 1: api.AddMachineRequest.public_ip:type_name -> api.IP
 	14, // 2: api.AddMachineResponse.machine:type_name -> api.MachineInfo
@@ -802,15 +798,15 @@ var file_internal_machine_api_pb_cluster_proto_depIdxs = []int32{
 	0,  // [0:9] is the sub-list for field type_name
 }
 
-func init() { file_internal_machine_api_pb_cluster_proto_init() }
-func file_internal_machine_api_pb_cluster_proto_init() {
-	if File_internal_machine_api_pb_cluster_proto != nil {
+func init() { file_api_pb_cluster_proto_init() }
+func file_api_pb_cluster_proto_init() {
+	if File_api_pb_cluster_proto != nil {
 		return
 	}
-	file_internal_machine_api_pb_common_proto_init()
-	file_internal_machine_api_pb_machine_proto_init()
+	file_api_pb_common_proto_init()
+	file_api_pb_machine_proto_init()
 	if !protoimpl.UnsafeEnabled {
-		file_internal_machine_api_pb_cluster_proto_msgTypes[0].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[0].Exporter = func(v any, i int) any {
 			switch v := v.(*AddMachineRequest); i {
 			case 0:
 				return &v.state
@@ -822,7 +818,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[1].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[1].Exporter = func(v any, i int) any {
 			switch v := v.(*AddMachineResponse); i {
 			case 0:
 				return &v.state
@@ -834,7 +830,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[2].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[2].Exporter = func(v any, i int) any {
 			switch v := v.(*MachineMember); i {
 			case 0:
 				return &v.state
@@ -846,7 +842,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[3].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[3].Exporter = func(v any, i int) any {
 			switch v := v.(*ListMachinesResponse); i {
 			case 0:
 				return &v.state
@@ -858,7 +854,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[4].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[4].Exporter = func(v any, i int) any {
 			switch v := v.(*RemoveMachineRequest); i {
 			case 0:
 				return &v.state
@@ -870,7 +866,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[5].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[5].Exporter = func(v any, i int) any {
 			switch v := v.(*Domain); i {
 			case 0:
 				return &v.state
@@ -882,7 +878,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[6].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[6].Exporter = func(v any, i int) any {
 			switch v := v.(*ReserveDomainRequest); i {
 			case 0:
 				return &v.state
@@ -894,7 +890,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[7].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[7].Exporter = func(v any, i int) any {
 			switch v := v.(*CreateDomainRecordsRequest); i {
 			case 0:
 				return &v.state
@@ -906,7 +902,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[8].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[8].Exporter = func(v any, i int) any {
 			switch v := v.(*CreateDomainRecordsResponse); i {
 			case 0:
 				return &v.state
@@ -918,7 +914,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_cluster_proto_msgTypes[9].Exporter = func(v any, i int) any {
+		file_api_pb_cluster_proto_msgTypes[9].Exporter = func(v any, i int) any {
 			switch v := v.(*DNSRecord); i {
 			case 0:
 				return &v.state
@@ -935,19 +931,19 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_internal_machine_api_pb_cluster_proto_rawDesc,
+			RawDescriptor: file_api_pb_cluster_proto_rawDesc,
 			NumEnums:      2,
 			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
-		GoTypes:           file_internal_machine_api_pb_cluster_proto_goTypes,
-		DependencyIndexes: file_internal_machine_api_pb_cluster_proto_depIdxs,
-		EnumInfos:         file_internal_machine_api_pb_cluster_proto_enumTypes,
-		MessageInfos:      file_internal_machine_api_pb_cluster_proto_msgTypes,
+		GoTypes:           file_api_pb_cluster_proto_goTypes,
+		DependencyIndexes: file_api_pb_cluster_proto_depIdxs,
+		EnumInfos:         file_api_pb_cluster_proto_enumTypes,
+		MessageInfos:      file_api_pb_cluster_proto_msgTypes,
 	}.Build()
-	File_internal_machine_api_pb_cluster_proto = out.File
-	file_internal_machine_api_pb_cluster_proto_rawDesc = nil
-	file_internal_machine_api_pb_cluster_proto_goTypes = nil
-	file_internal_machine_api_pb_cluster_proto_depIdxs = nil
+	File_api_pb_cluster_proto = out.File
+	file_api_pb_cluster_proto_rawDesc = nil
+	file_api_pb_cluster_proto_goTypes = nil
+	file_api_pb_cluster_proto_depIdxs = nil
 }

api/pb/cluster.proto

@@ -2,11 +2,11 @@ syntax = "proto3";
 
 package api;
 
-option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
+option go_package = "github.com/psviderski/uncloud/api/pb";
 
 import "google/protobuf/empty.proto";
-import "internal/machine/api/pb/common.proto";
-import "internal/machine/api/pb/machine.proto";
+import "api/pb/common.proto";
+import "api/pb/machine.proto";
 
 service Cluster {
   rpc AddMachine(AddMachineRequest) returns (AddMachineResponse);

api/pb/cluster_grpc.pb.go

@@ -2,7 +2,7 @@
 // versions:
 // - protoc-gen-go-grpc v1.5.1
 // - protoc             v5.27.3
-// source: internal/machine/api/pb/cluster.proto
+// source: api/pb/cluster.proto
 
 package pb
 
@@ -346,5 +346,5 @@ var Cluster_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "internal/machine/api/pb/cluster.proto",
+	Metadata: "api/pb/cluster.proto",
 }

api/pb/common.pb.go

@@ -2,7 +2,7 @@
 // versions:
 // 	protoc-gen-go v1.34.2
 // 	protoc        v5.27.3
-// source: internal/machine/api/pb/common.proto
+// source: api/pb/common.proto
 
 package pb
 
@@ -58,11 +58,11 @@ func (x LogEntry_StreamType) String() string {
 }
 
 func (LogEntry_StreamType) Descriptor() protoreflect.EnumDescriptor {
-	return file_internal_machine_api_pb_common_proto_enumTypes[0].Descriptor()
+	return file_api_pb_common_proto_enumTypes[0].Descriptor()
 }
 
 func (LogEntry_StreamType) Type() protoreflect.EnumType {
-	return &file_internal_machine_api_pb_common_proto_enumTypes[0]
+	return &file_api_pb_common_proto_enumTypes[0]
 }
 
 func (x LogEntry_StreamType) Number() protoreflect.EnumNumber {
@@ -71,7 +71,7 @@ func (x LogEntry_StreamType) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use LogEntry_StreamType.Descriptor instead.
 func (LogEntry_StreamType) EnumDescriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{7, 0}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{7, 0}
 }
 
 // Common metadata message nested in all reply message types, injected by the gRPC proxy to provide information
@@ -96,7 +96,7 @@ type Metadata struct {
 func (x *Metadata) Reset() {
 	*x = Metadata{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[0]
+		mi := &file_api_pb_common_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -109,7 +109,7 @@ func (x *Metadata) String() string {
 func (*Metadata) ProtoMessage() {}
 
 func (x *Metadata) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[0]
+	mi := &file_api_pb_common_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -122,7 +122,7 @@ func (x *Metadata) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Metadata.ProtoReflect.Descriptor instead.
 func (*Metadata) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{0}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *Metadata) GetMachineId() string {
@@ -172,7 +172,7 @@ type Empty struct {
 func (x *Empty) Reset() {
 	*x = Empty{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[1]
+		mi := &file_api_pb_common_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -185,7 +185,7 @@ func (x *Empty) String() string {
 func (*Empty) ProtoMessage() {}
 
 func (x *Empty) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[1]
+	mi := &file_api_pb_common_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -198,7 +198,7 @@ func (x *Empty) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Empty.ProtoReflect.Descriptor instead.
 func (*Empty) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{1}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *Empty) GetMetadata() *Metadata {
@@ -221,7 +221,7 @@ type EmptyResponse struct {
 func (x *EmptyResponse) Reset() {
 	*x = EmptyResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[2]
+		mi := &file_api_pb_common_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -234,7 +234,7 @@ func (x *EmptyResponse) String() string {
 func (*EmptyResponse) ProtoMessage() {}
 
 func (x *EmptyResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[2]
+	mi := &file_api_pb_common_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -247,7 +247,7 @@ func (x *EmptyResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use EmptyResponse.ProtoReflect.Descriptor instead.
 func (*EmptyResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{2}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *EmptyResponse) GetMessages() []*Empty {
@@ -268,7 +268,7 @@ type IP struct {
 func (x *IP) Reset() {
 	*x = IP{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[3]
+		mi := &file_api_pb_common_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -281,7 +281,7 @@ func (x *IP) String() string {
 func (*IP) ProtoMessage() {}
 
 func (x *IP) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[3]
+	mi := &file_api_pb_common_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -294,7 +294,7 @@ func (x *IP) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use IP.ProtoReflect.Descriptor instead.
 func (*IP) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{3}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *IP) GetIp() []byte {
@@ -316,7 +316,7 @@ type IPPort struct {
 func (x *IPPort) Reset() {
 	*x = IPPort{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[4]
+		mi := &file_api_pb_common_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -329,7 +329,7 @@ func (x *IPPort) String() string {
 func (*IPPort) ProtoMessage() {}
 
 func (x *IPPort) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[4]
+	mi := &file_api_pb_common_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -342,7 +342,7 @@ func (x *IPPort) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use IPPort.ProtoReflect.Descriptor instead.
 func (*IPPort) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{4}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *IPPort) GetIp() *IP {
@@ -371,7 +371,7 @@ type IPPrefix struct {
 func (x *IPPrefix) Reset() {
 	*x = IPPrefix{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[5]
+		mi := &file_api_pb_common_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -384,7 +384,7 @@ func (x *IPPrefix) String() string {
 func (*IPPrefix) ProtoMessage() {}
 
 func (x *IPPrefix) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[5]
+	mi := &file_api_pb_common_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -397,7 +397,7 @@ func (x *IPPrefix) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use IPPrefix.ProtoReflect.Descriptor instead.
 func (*IPPrefix) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{5}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *IPPrefix) GetIp() *IP {
@@ -430,7 +430,7 @@ type LogsRequest struct {
 func (x *LogsRequest) Reset() {
 	*x = LogsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[6]
+		mi := &file_api_pb_common_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -443,7 +443,7 @@ func (x *LogsRequest) String() string {
 func (*LogsRequest) ProtoMessage() {}
 
 func (x *LogsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[6]
+	mi := &file_api_pb_common_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -456,7 +456,7 @@ func (x *LogsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LogsRequest.ProtoReflect.Descriptor instead.
 func (*LogsRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{6}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *LogsRequest) GetId() string {
@@ -508,7 +508,7 @@ type LogEntry struct {
 func (x *LogEntry) Reset() {
 	*x = LogEntry{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_common_proto_msgTypes[7]
+		mi := &file_api_pb_common_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -521,7 +521,7 @@ func (x *LogEntry) String() string {
 func (*LogEntry) ProtoMessage() {}
 
 func (x *LogEntry) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_common_proto_msgTypes[7]
+	mi := &file_api_pb_common_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -534,7 +534,7 @@ func (x *LogEntry) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LogEntry.ProtoReflect.Descriptor instead.
 func (*LogEntry) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_common_proto_rawDescGZIP(), []int{7}
+	return file_api_pb_common_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *LogEntry) GetStream() LogEntry_StreamType {
@@ -558,84 +558,82 @@ func (x *LogEntry) GetMessage() []byte {
 	return nil
 }
 
-var File_internal_machine_api_pb_common_proto protoreflect.FileDescriptor
+var File_api_pb_common_proto protoreflect.FileDescriptor
 
-var file_internal_machine_api_pb_common_proto_rawDesc = []byte{
-	0x0a, 0x24, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x6d, 0x61, 0x63, 0x68, 0x69,
-	0x6e, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e,
-	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x03, 0x61, 0x70, 0x69, 0x1a, 0x17, 0x67, 0x6f, 0x6f,
-	0x67, 0x6c, 0x65, 0x2f, 0x72, 0x70, 0x63, 0x2f, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x2e, 0x70,
-	0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x2e,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xb1, 0x01, 0x0a, 0x08, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61,
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 }
 
 var (
-	file_internal_machine_api_pb_common_proto_rawDescOnce sync.Once
-	file_internal_machine_api_pb_common_proto_rawDescData = file_internal_machine_api_pb_common_proto_rawDesc
+	file_api_pb_common_proto_rawDescOnce sync.Once
+	file_api_pb_common_proto_rawDescData = file_api_pb_common_proto_rawDesc
 )
 
-func file_internal_machine_api_pb_common_proto_rawDescGZIP() []byte {
-	file_internal_machine_api_pb_common_proto_rawDescOnce.Do(func() {
-		file_internal_machine_api_pb_common_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_machine_api_pb_common_proto_rawDescData)
+func file_api_pb_common_proto_rawDescGZIP() []byte {
+	file_api_pb_common_proto_rawDescOnce.Do(func() {
+		file_api_pb_common_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_pb_common_proto_rawDescData)
 	})
-	return file_internal_machine_api_pb_common_proto_rawDescData
+	return file_api_pb_common_proto_rawDescData
 }
 
-var file_internal_machine_api_pb_common_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_internal_machine_api_pb_common_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
-var file_internal_machine_api_pb_common_proto_goTypes = []any{
+var file_api_pb_common_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_api_pb_common_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_api_pb_common_proto_goTypes = []any{
 	(LogEntry_StreamType)(0),      // 0: api.LogEntry.StreamType
 	(*Metadata)(nil),              // 1: api.Metadata
 	(*Empty)(nil),                 // 2: api.Empty
@@ -648,7 +646,7 @@ var file_internal_machine_api_pb_common_proto_goTypes = []any{
 	(*status.Status)(nil),         // 9: google.rpc.Status
 	(*timestamppb.Timestamp)(nil), // 10: google.protobuf.Timestamp
 }
-var file_internal_machine_api_pb_common_proto_depIdxs = []int32{
+var file_api_pb_common_proto_depIdxs = []int32{
 	9,  // 0: api.Metadata.status:type_name -> google.rpc.Status
 	1,  // 1: api.Empty.metadata:type_name -> api.Metadata
 	2,  // 2: api.EmptyResponse.messages:type_name -> api.Empty
@@ -663,13 +661,13 @@ var file_internal_machine_api_pb_common_proto_depIdxs = []int32{
 	0,  // [0:7] is the sub-list for field type_name
 }
 
-func init() { file_internal_machine_api_pb_common_proto_init() }
-func file_internal_machine_api_pb_common_proto_init() {
-	if File_internal_machine_api_pb_common_proto != nil {
+func init() { file_api_pb_common_proto_init() }
+func file_api_pb_common_proto_init() {
+	if File_api_pb_common_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_internal_machine_api_pb_common_proto_msgTypes[0].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[0].Exporter = func(v any, i int) any {
 			switch v := v.(*Metadata); i {
 			case 0:
 				return &v.state
@@ -681,7 +679,7 @@ func file_internal_machine_api_pb_common_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_common_proto_msgTypes[1].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[1].Exporter = func(v any, i int) any {
 			switch v := v.(*Empty); i {
 			case 0:
 				return &v.state
@@ -693,7 +691,7 @@ func file_internal_machine_api_pb_common_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_common_proto_msgTypes[2].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[2].Exporter = func(v any, i int) any {
 			switch v := v.(*EmptyResponse); i {
 			case 0:
 				return &v.state
@@ -705,7 +703,7 @@ func file_internal_machine_api_pb_common_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_common_proto_msgTypes[3].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[3].Exporter = func(v any, i int) any {
 			switch v := v.(*IP); i {
 			case 0:
 				return &v.state
@@ -717,7 +715,7 @@ func file_internal_machine_api_pb_common_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_common_proto_msgTypes[4].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[4].Exporter = func(v any, i int) any {
 			switch v := v.(*IPPort); i {
 			case 0:
 				return &v.state
@@ -729,7 +727,7 @@ func file_internal_machine_api_pb_common_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_common_proto_msgTypes[5].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[5].Exporter = func(v any, i int) any {
 			switch v := v.(*IPPrefix); i {
 			case 0:
 				return &v.state
@@ -741,7 +739,7 @@ func file_internal_machine_api_pb_common_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_common_proto_msgTypes[6].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[6].Exporter = func(v any, i int) any {
 			switch v := v.(*LogsRequest); i {
 			case 0:
 				return &v.state
@@ -753,7 +751,7 @@ func file_internal_machine_api_pb_common_proto_init() {
 				return nil
 			}
 		}
-		file_internal_machine_api_pb_common_proto_msgTypes[7].Exporter = func(v any, i int) any {
+		file_api_pb_common_proto_msgTypes[7].Exporter = func(v any, i int) any {
 			switch v := v.(*LogEntry); i {
 			case 0:
 				return &v.state
@@ -770,19 +768,19 @@ func file_internal_machine_api_pb_common_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_internal_machine_api_pb_common_proto_rawDesc,
+			RawDescriptor: file_api_pb_common_proto_rawDesc,
 			NumEnums:      1,
 			NumMessages:   8,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
-		GoTypes:           file_internal_machine_api_pb_common_proto_goTypes,
-		DependencyIndexes: file_internal_machine_api_pb_common_proto_depIdxs,
-		EnumInfos:         file_internal_machine_api_pb_common_proto_enumTypes,
-		MessageInfos:      file_internal_machine_api_pb_common_proto_msgTypes,
+		GoTypes:           file_api_pb_common_proto_goTypes,
+		DependencyIndexes: file_api_pb_common_proto_depIdxs,
+		EnumInfos:         file_api_pb_common_proto_enumTypes,
+		MessageInfos:      file_api_pb_common_proto_msgTypes,
 	}.Build()
-	File_internal_machine_api_pb_common_proto = out.File
-	file_internal_machine_api_pb_common_proto_rawDesc = nil
-	file_internal_machine_api_pb_common_proto_goTypes = nil
-	file_internal_machine_api_pb_common_proto_depIdxs = nil
+	File_api_pb_common_proto = out.File
+	file_api_pb_common_proto_rawDesc = nil
+	file_api_pb_common_proto_goTypes = nil
+	file_api_pb_common_proto_depIdxs = nil
 }

api/pb/common.proto

@@ -2,9 +2,9 @@ syntax = "proto3";
 
 package api;
 
-option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
+option go_package = "github.com/psviderski/uncloud/api/pb";
 
-// Vendored at internal/machine/api/vendor/google/rpc/status.proto.
+// Vendored at api/pb/vendor/google/rpc/status.proto.
 import "google/rpc/status.proto";
 import "google/protobuf/timestamp.proto";
 

api/pb/docker.proto

@@ -2,10 +2,10 @@ syntax = "proto3";
 
 package api;
 
-option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
+option go_package = "github.com/psviderski/uncloud/api/pb";
 
 import "google/protobuf/empty.proto";
-import "internal/machine/api/pb/common.proto";
+import "api/pb/common.proto";
 
 service Docker {
   rpc CreateContainer(CreateContainerRequest) returns (CreateContainerResponse);

api/pb/docker_grpc.pb.go

@@ -2,7 +2,7 @@
 // versions:
 // - protoc-gen-go-grpc v1.5.1
 // - protoc             v5.27.3
-// source: internal/machine/api/pb/docker.proto
+// source: api/pb/docker.proto
 
 package pb
 
@@ -807,5 +807,5 @@ var Docker_ServiceDesc = grpc.ServiceDesc{
 			ServerStreams: true,
 		},
 	},
-	Metadata: "internal/machine/api/pb/docker.proto",
+	Metadata: "api/pb/docker.proto",
 }

api/pb/machine.proto

@@ -2,12 +2,12 @@ syntax = "proto3";
 
 package api;
 
-option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
+option go_package = "github.com/psviderski/uncloud/api/pb";
 
 import "google/protobuf/duration.proto";
 import "google/protobuf/empty.proto";
 import "google/protobuf/timestamp.proto";
-import "internal/machine/api/pb/common.proto";
+import "api/pb/common.proto";
 
 service Machine {
   // CheckPrerequisites verifies if the machine meets all necessary system requirements to participate in the cluster.
@@ -19,6 +19,22 @@ service Machine {
   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);
+  // WaitForStoreVersion waits until the cluster store on this machine has reached each requested actor version, with
+  // no known missing or pending transactions through those versions.
+  // Corrosion may satisfy a version by applying its surviving changes or by marking it complete because its changes
+  // have been superseded.
+  //
+  // Waiting normally makes the captured data available on this machine. However, another write may replace some of that
+  // data before it arrives. Corrosion can then complete the older version without transferring the replaced data.
+  // If the replacement is outside the requested versions, this RPC can succeed while the affected data is still missing
+  // or outdated. This can happen during concurrent updates even when all machines are well connected.
+  //
+  // Success does not guarantee an exact snapshot or delivery of every historical value. Callers that require a specific
+  // record or condition should verify it after waiting.
+  //
+  // This RPC observes native replication without initiating synchronisation.
+  // Use the RPC deadline to bound the wait.
+  rpc WaitForStoreVersion(WaitForStoreVersionRequest) returns (google.protobuf.Empty);
   // UpdateMachine updates the configuration of the machine.
   rpc UpdateMachine(UpdateMachineRequest) returns (UpdateMachineResponse);
   // InspectWireGuardNetwork retrieves the current WireGuard network configuration and peer status.
@@ -105,8 +121,8 @@ message JoinClusterRequest {
   // MTU of the WireGuard interface on this machine. The daemon auto-detects the optimal MTU if 0 or not set.
   int32 wireguard_mtu = 7;
   // Cluster store version this machine must reach before participating.
-  // Per-actor vector (Corrosion actor UUID → max applied db_version).
-  map<string, int64> min_store_version = 6;
+  // Per-actor vector (Corrosion actor UUID → minimum required db_version).
+  map<string, uint64> min_store_version = 6;
 }
 
 message InspectMachineResponse {
@@ -119,9 +135,24 @@ message MachineDetails {
   MachineInfo machine = 2;
   // Round-trip times to other machines in the cluster, keyed by peer machine ID.
   map<string, RTTStats> rtts = 4;
-  // Current cluster store version observed on this machine.
-  // Per-actor vector (Corrosion actor UUID → max applied db_version) read from Corrosion crsql_db_versions.
-  map<string, int64> store_version = 5;
+  // Store replication progress observed on this machine.
+  // Maps each Corrosion actor UUID to its highest processed database version. Corrosion also counts versions whose
+  // changes were superseded and skipped. Versions at or below a reported version may still be missing or pending
+  // locally.
+  //
+  // Pass this vector to WaitForStoreVersion on another machine to wait for replication through these versions.
+  // See that RPC's data-availability limitations. To combine observations from several machines, take the maximum
+  // for each actor.
+  // Capturing this vector does not wait for replication or prevent further writes.
+  map<string, uint64> store_version = 5;
+}
+
+message WaitForStoreVersionRequest {
+  // Minimum database version to reach for each Corrosion actor UUID.
+  // Obtain a vector from InspectMachine. To combine several responses, take the maximum version for each actor.
+  // Actors omitted from this vector and versions above its targets are not awaited. An empty vector requires
+  // no replication. Unknown actors with positive targets remain pending until replication reaches them or the RPC ends.
+  map<string, uint64> min_version = 1;
 }
 
 message TokenResponse {

api/pb/machine_grpc.pb.go

@@ -2,7 +2,7 @@
 // versions:
 // - protoc-gen-go-grpc v1.5.1
 // - protoc             v5.27.3
-// source: internal/machine/api/pb/machine.proto
+// source: api/pb/machine.proto
 
 package pb
 
@@ -26,6 +26,7 @@ const (
 	Machine_Token_FullMethodName                   = "/api.Machine/Token"
 	Machine_Inspect_FullMethodName                 = "/api.Machine/Inspect"
 	Machine_InspectMachine_FullMethodName          = "/api.Machine/InspectMachine"
+	Machine_WaitForStoreVersion_FullMethodName     = "/api.Machine/WaitForStoreVersion"
 	Machine_UpdateMachine_FullMethodName           = "/api.Machine/UpdateMachine"
 	Machine_InspectWireGuardNetwork_FullMethodName = "/api.Machine/InspectWireGuardNetwork"
 	Machine_Reset_FullMethodName                   = "/api.Machine/Reset"
@@ -46,6 +47,22 @@ type MachineClient interface {
 	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)
+	// WaitForStoreVersion waits until the cluster store on this machine has reached each requested actor version, with
+	// no known missing or pending transactions through those versions.
+	// Corrosion may satisfy a version by applying its surviving changes or by marking it complete because its changes
+	// have been superseded.
+	//
+	// Waiting normally makes the captured data available on this machine. However, another write may replace some of that
+	// data before it arrives. Corrosion can then complete the older version without transferring the replaced data.
+	// If the replacement is outside the requested versions, this RPC can succeed while the affected data is still missing
+	// or outdated. This can happen during concurrent updates even when all machines are well connected.
+	//
+	// Success does not guarantee an exact snapshot or delivery of every historical value. Callers that require a specific
+	// record or condition should verify it after waiting.
+	//
+	// This RPC observes native replication without initiating synchronisation.
+	// Use the RPC deadline to bound the wait.
+	WaitForStoreVersion(ctx context.Context, in *WaitForStoreVersionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// UpdateMachine updates the configuration of the machine.
 	UpdateMachine(ctx context.Context, in *UpdateMachineRequest, opts ...grpc.CallOption) (*UpdateMachineResponse, error)
 	// InspectWireGuardNetwork retrieves the current WireGuard network configuration and peer status.
@@ -124,6 +141,16 @@ func (c *machineClient) InspectMachine(ctx context.Context, in *emptypb.Empty, o
 	return out, nil
 }
 
+func (c *machineClient) WaitForStoreVersion(ctx context.Context, in *WaitForStoreVersionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, Machine_WaitForStoreVersion_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *machineClient) UpdateMachine(ctx context.Context, in *UpdateMachineRequest, opts ...grpc.CallOption) (*UpdateMachineResponse, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(UpdateMachineResponse)
@@ -196,6 +223,22 @@ type MachineServer interface {
 	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)
+	// WaitForStoreVersion waits until the cluster store on this machine has reached each requested actor version, with
+	// no known missing or pending transactions through those versions.
+	// Corrosion may satisfy a version by applying its surviving changes or by marking it complete because its changes
+	// have been superseded.
+	//
+	// Waiting normally makes the captured data available on this machine. However, another write may replace some of that
+	// data before it arrives. Corrosion can then complete the older version without transferring the replaced data.
+	// If the replacement is outside the requested versions, this RPC can succeed while the affected data is still missing
+	// or outdated. This can happen during concurrent updates even when all machines are well connected.
+	//
+	// Success does not guarantee an exact snapshot or delivery of every historical value. Callers that require a specific
+	// record or condition should verify it after waiting.
+	//
+	// This RPC observes native replication without initiating synchronisation.
+	// Use the RPC deadline to bound the wait.
+	WaitForStoreVersion(context.Context, *WaitForStoreVersionRequest) (*emptypb.Empty, error)
 	// UpdateMachine updates the configuration of the machine.
 	UpdateMachine(context.Context, *UpdateMachineRequest) (*UpdateMachineResponse, error)
 	// InspectWireGuardNetwork retrieves the current WireGuard network configuration and peer status.
@@ -232,6 +275,9 @@ func (UnimplementedMachineServer) Inspect(context.Context, *emptypb.Empty) (*Mac
 func (UnimplementedMachineServer) InspectMachine(context.Context, *emptypb.Empty) (*InspectMachineResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method InspectMachine not implemented")
 }
+func (UnimplementedMachineServer) WaitForStoreVersion(context.Context, *WaitForStoreVersionRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method WaitForStoreVersion not implemented")
+}
 func (UnimplementedMachineServer) UpdateMachine(context.Context, *UpdateMachineRequest) (*UpdateMachineResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateMachine not implemented")
 }
@@ -376,6 +422,24 @@ func _Machine_InspectMachine_Handler(srv interface{}, ctx context.Context, dec f
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Machine_WaitForStoreVersion_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(WaitForStoreVersionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MachineServer).WaitForStoreVersion(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Machine_WaitForStoreVersion_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MachineServer).WaitForStoreVersion(ctx, req.(*WaitForStoreVersionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Machine_UpdateMachine_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(UpdateMachineRequest)
 	if err := dec(in); err != nil {
@@ -490,6 +554,10 @@ var Machine_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "InspectMachine",
 			Handler:    _Machine_InspectMachine_Handler,
 		},
+		{
+			MethodName: "WaitForStoreVersion",
+			Handler:    _Machine_WaitForStoreVersion_Handler,
+		},
 		{
 			MethodName: "UpdateMachine",
 			Handler:    _Machine_UpdateMachine_Handler,
@@ -514,5 +582,5 @@ var Machine_ServiceDesc = grpc.ServiceDesc{
 			ServerStreams: true,
 		},
 	},
-	Metadata: "internal/machine/api/pb/machine.proto",
+	Metadata: "api/pb/machine.proto",
 }

cmd/uc/caddy/deploy.go

@@ -12,10 +12,10 @@ import (
 	"charm.land/lipgloss/v2"
 	"github.com/docker/cli/cli/streams"
 	"github.com/docker/compose/v2/pkg/progress"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/completion"
 	"github.com/psviderski/uncloud/internal/cli/tui"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/psviderski/uncloud/pkg/client"
 	"github.com/spf13/cobra"

cmd/uc/dns/reserve.go

@@ -5,9 +5,9 @@ import (
 	"errors"
 	"fmt"
 
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/cmd/uc/caddy"
 	"github.com/psviderski/uncloud/internal/cli"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/psviderski/uncloud/pkg/client"
 	"github.com/spf13/cobra"

cmd/uc/machine/init.go

@@ -8,12 +8,12 @@ import (
 	"time"
 
 	"github.com/docker/compose/v2/pkg/progress"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/cmd/uc/caddy"
 	"github.com/psviderski/uncloud/cmd/uc/dns"
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/config"
 	"github.com/psviderski/uncloud/internal/cli/tui"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/cluster"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/psviderski/uncloud/pkg/api"

cmd/uc/machine/rm.go

@@ -13,10 +13,10 @@ import (
 	"charm.land/lipgloss/v2/tree"
 	"github.com/docker/compose/v2/pkg/progress"
 	"github.com/docker/docker/api/types/container"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/completion"
 	"github.com/psviderski/uncloud/internal/cli/tui"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/spf13/cobra"
 )

cmd/uc/machine/update.go

@@ -6,9 +6,9 @@ import (
 	"net/netip"
 	"strings"
 
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/completion"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/spf13/cobra"
 )

cmd/uc/ps_test.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"testing"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/docker"
 	"github.com/psviderski/uncloud/pkg/client"
 	"github.com/stretchr/testify/assert"

cmd/uc/volume/create.go

@@ -8,9 +8,9 @@ import (
 
 	"charm.land/huh/v2"
 	"github.com/docker/docker/api/types/volume"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/completion"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/spf13/cobra"
 )

cmd/uc/wg/wg.go

@@ -8,10 +8,10 @@ import (
 
 	"charm.land/lipgloss/v2"
 	"github.com/docker/go-units"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/completion"
 	"github.com/psviderski/uncloud/internal/cli/tui"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/spf13/cobra"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 	"google.golang.org/grpc/codes"

internal/cli/cli.go

@@ -8,9 +8,9 @@ import (
 	"slices"
 
 	"github.com/docker/cli/cli/streams"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli/config"
 	"github.com/psviderski/uncloud/internal/machine"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/cluster"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/psviderski/uncloud/internal/sshexec"
@@ -458,7 +458,7 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (_ *clie
 	}
 
 	// Snapshot the cluster store version so the new machine can catch up before participating.
-	var storeVersion map[string]int64
+	var storeVersion map[string]uint64
 	inspectResp, err = c.MachineClient.InspectMachine(ctx, &emptypb.Empty{})
 	if err != nil {
 		// TODO(lhf): remove Unimplemented check when v0.17.0 is released.

internal/cli/flags.go

@@ -7,7 +7,7 @@ import (
 	"os"
 	"strings"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/spf13/cobra"
 )
 

internal/cli/machine.go

@@ -11,8 +11,8 @@ import (
 
 	"charm.land/huh/v2"
 	"github.com/cenkalti/backoff/v4"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli/tui"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/sshexec"
 	"github.com/psviderski/uncloud/scripts"
 	"google.golang.org/protobuf/types/known/emptypb"

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

@@ -1,176 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.34.2
-// 	protoc        v5.27.3
-// source: internal/machine/api/pb/caddy.proto
-
-package pb
-
-import (
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	emptypb "google.golang.org/protobuf/types/known/emptypb"
-	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
-	reflect "reflect"
-	sync "sync"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-type GetCaddyConfigResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	// The generated Caddyfile content.
-	Caddyfile string `protobuf:"bytes,1,opt,name=caddyfile,proto3" json:"caddyfile,omitempty"`
-	// Timestamp when the config was last modified.
-	ModifiedAt *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=modified_at,json=modifiedAt,proto3" json:"modified_at,omitempty"`
-}
-
-func (x *GetCaddyConfigResponse) Reset() {
-	*x = GetCaddyConfigResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_caddy_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetCaddyConfigResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetCaddyConfigResponse) ProtoMessage() {}
-
-func (x *GetCaddyConfigResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_caddy_proto_msgTypes[0]
-	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 GetCaddyConfigResponse.ProtoReflect.Descriptor instead.
-func (*GetCaddyConfigResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_caddy_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *GetCaddyConfigResponse) GetCaddyfile() string {
-	if x != nil {
-		return x.Caddyfile
-	}
-	return ""
-}
-
-func (x *GetCaddyConfigResponse) GetModifiedAt() *timestamppb.Timestamp {
-	if x != nil {
-		return x.ModifiedAt
-	}
-	return nil
-}
-
-var File_internal_machine_api_pb_caddy_proto protoreflect.FileDescriptor
-
-var file_internal_machine_api_pb_caddy_proto_rawDesc = []byte{
-	0x0a, 0x23, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x6d, 0x61, 0x63, 0x68, 0x69,
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-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x03, 0x61, 0x70, 0x69, 0x1a, 0x1b, 0x67, 0x6f, 0x6f, 0x67,
-	0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x65, 0x6d, 0x70, 0x74,
-	0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61,
-	0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x73, 0x0a, 0x16, 0x47, 0x65, 0x74, 0x43,
-	0x61, 0x64, 0x64, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
-	0x73, 0x65, 0x12, 0x1c, 0x0a, 0x09, 0x63, 0x61, 0x64, 0x64, 0x79, 0x66, 0x69, 0x6c, 0x65, 0x18,
-	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x63, 0x61, 0x64, 0x64, 0x79, 0x66, 0x69, 0x6c, 0x65,
-	0x12, 0x3b, 0x0a, 0x0b, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x5f, 0x61, 0x74, 0x18,
-	0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70,
-	0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x54, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d,
-	0x70, 0x52, 0x0a, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x41, 0x74, 0x32, 0x49, 0x0a,
-	0x05, 0x43, 0x61, 0x64, 0x64, 0x79, 0x12, 0x40, 0x0a, 0x09, 0x47, 0x65, 0x74, 0x43, 0x6f, 0x6e,
-	0x66, 0x69, 0x67, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x1b, 0x2e, 0x61, 0x70,
-	0x69, 0x2e, 0x47, 0x65, 0x74, 0x43, 0x61, 0x64, 0x64, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
-	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x42, 0x37, 0x5a, 0x35, 0x67, 0x69, 0x74, 0x68,
-	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x70, 0x73, 0x76, 0x69, 0x64, 0x65, 0x72, 0x73, 0x6b,
-	0x69, 0x2f, 0x75, 0x6e, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e,
-	0x61, 0x6c, 0x2f, 0x6d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70,
-	0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
-
-var (
-	file_internal_machine_api_pb_caddy_proto_rawDescOnce sync.Once
-	file_internal_machine_api_pb_caddy_proto_rawDescData = file_internal_machine_api_pb_caddy_proto_rawDesc
-)
-
-func file_internal_machine_api_pb_caddy_proto_rawDescGZIP() []byte {
-	file_internal_machine_api_pb_caddy_proto_rawDescOnce.Do(func() {
-		file_internal_machine_api_pb_caddy_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_machine_api_pb_caddy_proto_rawDescData)
-	})
-	return file_internal_machine_api_pb_caddy_proto_rawDescData
-}
-
-var file_internal_machine_api_pb_caddy_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
-var file_internal_machine_api_pb_caddy_proto_goTypes = []any{
-	(*GetCaddyConfigResponse)(nil), // 0: api.GetCaddyConfigResponse
-	(*timestamppb.Timestamp)(nil),  // 1: google.protobuf.Timestamp
-	(*emptypb.Empty)(nil),          // 2: google.protobuf.Empty
-}
-var file_internal_machine_api_pb_caddy_proto_depIdxs = []int32{
-	1, // 0: api.GetCaddyConfigResponse.modified_at:type_name -> google.protobuf.Timestamp
-	2, // 1: api.Caddy.GetConfig:input_type -> google.protobuf.Empty
-	0, // 2: api.Caddy.GetConfig:output_type -> api.GetCaddyConfigResponse
-	2, // [2:3] is the sub-list for method output_type
-	1, // [1:2] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
-}
-
-func init() { file_internal_machine_api_pb_caddy_proto_init() }
-func file_internal_machine_api_pb_caddy_proto_init() {
-	if File_internal_machine_api_pb_caddy_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_internal_machine_api_pb_caddy_proto_msgTypes[0].Exporter = func(v any, i int) any {
-			switch v := v.(*GetCaddyConfigResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_internal_machine_api_pb_caddy_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   1,
-			NumExtensions: 0,
-			NumServices:   1,
-		},
-		GoTypes:           file_internal_machine_api_pb_caddy_proto_goTypes,
-		DependencyIndexes: file_internal_machine_api_pb_caddy_proto_depIdxs,
-		MessageInfos:      file_internal_machine_api_pb_caddy_proto_msgTypes,
-	}.Build()
-	File_internal_machine_api_pb_caddy_proto = out.File
-	file_internal_machine_api_pb_caddy_proto_rawDesc = nil
-	file_internal_machine_api_pb_caddy_proto_goTypes = nil
-	file_internal_machine_api_pb_caddy_proto_depIdxs = nil
-}

internal/machine/api/proxy/backend.go

@@ -3,7 +3,7 @@ package proxy
 import (
 	"fmt"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/siderolabs/grpc-proxy/proxy"
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/encoding/protowire"

internal/machine/api/proxy/mapper.go

@@ -6,7 +6,7 @@ import (
 	"slices"
 	"strings"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 )
 
 // MachineTarget represents a resolved machine target.

internal/machine/api/proxy/mapper_test.go

@@ -6,7 +6,7 @@ import (
 	"net/netip"
 	"testing"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )

internal/machine/caddyconfig/server.go

@@ -9,7 +9,7 @@ import (
 	"google.golang.org/protobuf/types/known/emptypb"
 	"google.golang.org/protobuf/types/known/timestamppb"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 )
 
 // Server implements the gRPC Caddy service.

internal/machine/caddystorage/server.go

@@ -0,0 +1,181 @@
+// Package caddystorage implements the machine-local Caddy storage API.
+// See api/pb/caddy_storage.proto for the gRPC service definition.
+package caddystorage
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"maps"
+	"path"
+	"slices"
+	"strings"
+
+	"github.com/psviderski/uncloud/api/pb"
+	"github.com/psviderski/uncloud/internal/machine/store"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
+	"google.golang.org/protobuf/types/known/timestamppb"
+)
+
+// Namespace identifies Caddy storage records in the cluster key-value store.
+const Namespace = "caddy_storage"
+
+// Server implements the machine-local CaddyStorage gRPC service.
+type Server struct {
+	pb.UnimplementedCaddyStorageServer
+	store *store.Keyspace
+}
+
+func NewServer(store *store.Keyspace) *Server {
+	return &Server{store: store}
+}
+
+func (s *Server) Store(ctx context.Context, req *pb.StoreCaddyStorageRequest) (*emptypb.Empty, error) {
+	if err := validateKey(req.Key); err != nil {
+		return nil, status.Error(codes.InvalidArgument, err.Error())
+	}
+	if err := s.store.Put(ctx, req.Key, req.Value); err != nil {
+		return nil, status.Errorf(codes.Internal, "put value: %v", err)
+	}
+
+	return &emptypb.Empty{}, nil
+}
+
+func (s *Server) Load(ctx context.Context, req *pb.LoadCaddyStorageRequest) (*pb.LoadCaddyStorageResponse, error) {
+	if err := validateKey(req.Key); err != nil {
+		return nil, status.Error(codes.InvalidArgument, err.Error())
+	}
+
+	record, err := s.store.Get(ctx, req.Key)
+	if errors.Is(err, store.ErrKeyNotFound) {
+		return nil, status.Errorf(codes.NotFound, "Caddy storage key %q not found", req.Key)
+	}
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "get value: %v", err)
+	}
+
+	return &pb.LoadCaddyStorageResponse{
+		Value:     record.Value,
+		UpdatedAt: timestamppb.New(record.UpdatedAt),
+	}, nil
+}
+
+func (s *Server) Delete(ctx context.Context, req *pb.DeleteCaddyStorageRequest) (*emptypb.Empty, error) {
+	if err := validateKey(req.Key); err != nil {
+		return nil, status.Error(codes.InvalidArgument, err.Error())
+	}
+
+	// Delete the key and all keys prefixed by it in case it's a directory.
+	if err := errors.Join(
+		s.store.Delete(ctx, req.Key, store.KeyspaceDeleteOptions{}),
+		s.store.Delete(ctx, req.Key+"/", store.KeyspaceDeleteOptions{Prefix: true}),
+	); err != nil {
+		return nil, status.Errorf(codes.Internal, "delete key: %v", err)
+	}
+
+	return &emptypb.Empty{}, nil
+}
+
+func (s *Server) List(ctx context.Context, req *pb.ListCaddyStorageRequest) (*pb.ListCaddyStorageResponse, error) {
+	if req.Prefix != "" {
+		if err := validateKey(req.Prefix); err != nil {
+			return nil, status.Error(codes.InvalidArgument, err.Error())
+		}
+	}
+
+	storagePrefix := req.Prefix
+	if storagePrefix != "" {
+		storagePrefix += "/"
+	}
+	records, err := s.store.List(ctx, storagePrefix, store.KeyspaceListOptions{KeysOnly: true})
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "list keys: %v", err)
+	}
+	// No descendants can mean an existing terminal key or a missing path.
+	// Check the exact key for non-root prefixes. An empty prefix lists the storage root.
+	if len(records) == 0 && req.Prefix != "" {
+		if _, err = s.store.Get(ctx, req.Prefix); errors.Is(err, store.ErrKeyNotFound) {
+			return nil, status.Errorf(codes.NotFound, "Caddy storage prefix %q not found", req.Prefix)
+		} else if err != nil {
+			return nil, status.Errorf(codes.Internal, "get prefix value: %v", err)
+		}
+	}
+
+	return &pb.ListCaddyStorageResponse{
+		Keys: listKeys(records, req.Prefix, req.Recursive),
+	}, nil
+}
+
+func listKeys(records []store.Record, prefix string, recursive bool) []string {
+	keys := make(map[string]struct{})
+	for _, record := range records {
+		relative := record.Key
+		if prefix != "" {
+			relative = strings.TrimPrefix(record.Key, prefix+"/")
+		}
+		components := strings.Split(relative, "/")
+		if !recursive {
+			keys[path.Join(prefix, components[0])] = struct{}{}
+			continue
+		}
+
+		for i := range components {
+			keys[path.Join(prefix, path.Join(components[:i+1]...))] = struct{}{}
+		}
+	}
+
+	return slices.Sorted(maps.Keys(keys))
+}
+
+func (s *Server) Stat(ctx context.Context, req *pb.StatCaddyStorageRequest) (*pb.StatCaddyStorageResponse, error) {
+	if err := validateKey(req.Key); err != nil {
+		return nil, status.Error(codes.InvalidArgument, err.Error())
+	}
+
+	record, err := s.store.Get(ctx, req.Key)
+	if err == nil {
+		return &pb.StatCaddyStorageResponse{
+			Key:        req.Key,
+			UpdatedAt:  timestamppb.New(record.UpdatedAt),
+			Size:       int64(len(record.Value)),
+			IsTerminal: true,
+		}, nil
+	}
+	if !errors.Is(err, store.ErrKeyNotFound) {
+		return nil, status.Errorf(codes.Internal, "get value: %v", err)
+	}
+
+	// A terminal key is not found. Check if there are any keys prefixed by the key to determine if it's a directory.
+	records, err := s.store.List(ctx, req.Key+"/", store.KeyspaceListOptions{KeysOnly: true})
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "list keys: %v", err)
+	}
+	if len(records) == 0 {
+		return nil, status.Errorf(codes.NotFound, "Caddy storage key %q not found", req.Key)
+	}
+
+	return &pb.StatCaddyStorageResponse{
+		Key:        req.Key,
+		IsTerminal: false,
+	}, nil
+}
+
+func validateKey(key string) error {
+	if key == "" {
+		return fmt.Errorf("key is empty")
+	}
+	if strings.HasPrefix(key, "/") || strings.HasSuffix(key, "/") {
+		return fmt.Errorf("key %q must not have a leading or trailing slash", key)
+	}
+	if strings.Contains(key, "\\") {
+		return fmt.Errorf("key %q must use forward slashes", key)
+	}
+	for component := range strings.SplitSeq(key, "/") {
+		if component == "" || component == "." || component == ".." {
+			return fmt.Errorf("key %q contains an invalid path component", key)
+		}
+	}
+	return nil
+}

internal/machine/caddystorage/server_test.go

@@ -0,0 +1,106 @@
+package caddystorage
+
+import (
+	"testing"
+
+	"github.com/psviderski/uncloud/internal/machine/store"
+	"github.com/stretchr/testify/require"
+)
+
+func TestListKeys(t *testing.T) {
+	tests := []struct {
+		name      string
+		records   []store.Record
+		prefix    string
+		recursive bool
+		want      []string
+	}{
+		{
+			name:      "empty root",
+			recursive: true,
+		},
+		{
+			name: "root immediate children",
+			records: []store.Record{
+				{Key: "ocsp/example.com"},
+				{Key: "certificates/issuer/example.com/example.com.key"},
+				{Key: "certificates/issuer/example.com/example.com.crt"},
+			},
+			want: []string{
+				"certificates",
+				"ocsp",
+			},
+		},
+		{
+			name: "root recursive",
+			records: []store.Record{
+				{Key: "ocsp/example.com"},
+				{Key: "certificates/issuer/example.com/example.com.key"},
+				{Key: "certificates/issuer/example.com/example.com.crt"},
+			},
+			recursive: true,
+			want: []string{
+				"certificates",
+				"certificates/issuer",
+				"certificates/issuer/example.com",
+				"certificates/issuer/example.com/example.com.crt",
+				"certificates/issuer/example.com/example.com.key",
+				"ocsp",
+				"ocsp/example.com",
+			},
+		},
+		{
+			name: "nested immediate children",
+			records: []store.Record{
+				{Key: "certificates/issuer/example.net/example.net.crt"},
+				{Key: "certificates/issuer/example.com/example.com.key"},
+				{Key: "certificates/issuer/example.com/example.com.crt"},
+			},
+			prefix: "certificates/issuer",
+			want: []string{
+				"certificates/issuer/example.com",
+				"certificates/issuer/example.net",
+			},
+		},
+		{
+			name: "nested terminal children",
+			records: []store.Record{
+				{Key: "ocsp/example.net"},
+				{Key: "ocsp/example.com"},
+			},
+			prefix: "ocsp",
+			want: []string{
+				"ocsp/example.com",
+				"ocsp/example.net",
+			},
+		},
+		{
+			name: "nested recursive",
+			records: []store.Record{
+				{Key: "certificates/issuer/example.net/example.net.crt"},
+				{Key: "certificates/issuer/example.com/example.com.key"},
+				{Key: "certificates/issuer/example.com/example.com.crt"},
+			},
+			prefix:    "certificates/issuer",
+			recursive: true,
+			want: []string{
+				"certificates/issuer/example.com",
+				"certificates/issuer/example.com/example.com.crt",
+				"certificates/issuer/example.com/example.com.key",
+				"certificates/issuer/example.net",
+				"certificates/issuer/example.net/example.net.crt",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := listKeys(tt.records, tt.prefix, tt.recursive)
+			if len(tt.want) == 0 {
+				require.Empty(t, got)
+				return
+			}
+			require.Equal(t, tt.want, got)
+		})
+	}
+}

internal/machine/cluster.go

@@ -12,7 +12,7 @@ import (
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/caddyconfig"
 	"github.com/psviderski/uncloud/internal/machine/constants"
 	"github.com/psviderski/uncloud/internal/machine/corromigrate"
@@ -189,9 +189,10 @@ func (cc *clusterController) Run(ctx context.Context) error {
 		return nil
 	})
 
-	// Wait for the store database to sync to the minimum version before starting store-dependent components.
-	// This prevents issues with using partially replicated data when the machine just joined the cluster,
-	// e.g., an empty machine list causing WireGuard peer misconfiguration.
+	// Wait for initial replication before starting store-dependent components, such as WireGuard peer reconciliation.
+	// This prevents issues with using partially replicated data when the machine just joined the cluster, e.g.,
+	// an empty machine list causing WireGuard peer misconfiguration.
+	// This uses Store.WaitForVersion's replication-progress semantics, not an exact snapshot of the join-time data.
 	if err = cc.waitStoreSync(ctx); err != nil {
 		return fmt.Errorf("wait initial cluster store sync: %w", err)
 	}
@@ -366,120 +367,67 @@ func (cc *clusterController) handleEndpointChanges(ctx context.Context) {
 	}
 }
 
-// waitStoreSync blocks until the local store version >= state.MinStoreVersion and any known gaps are synced.
-// No-op when MinStoreVersion is empty. Clears state.MinStoreVersion when reached.
+// waitStoreSync waits for initial replication using [store.Store.WaitForVersion].
+// No-op when MinStoreVersion is empty. Retries until cancellation and clears state.MinStoreVersion after success.
 func (cc *clusterController) waitStoreSync(ctx context.Context) error {
-	target := cc.state.MinStoreVersion
-	if len(target) == 0 {
+	minVersion := cc.state.MinStoreVersion
+	if len(minVersion) == 0 {
 		return nil
 	}
 
-	slog.Info("Waiting for the initial cluster store sync.", "actors", len(target))
+	slog.Info("Waiting for the initial cluster store sync.", "min_version", minVersion)
 
-	ticker := time.NewTicker(500 * time.Millisecond)
-	defer ticker.Stop()
-	// Periodic warning to surface stuck NAT/connectivity issues without aborting.
+	// Periodic deadlines surface stuck NAT/connectivity issues without aborting startup.
 	warnInterval := 5 * time.Minute
-	warnTimer := time.NewTimer(warnInterval)
-	defer warnTimer.Stop()
-
-	var (
-		lastLagging    int
-		lastErrLogTime time.Time
-	)
+	nextWarning := time.Now().Add(warnInterval)
+	var lastErrLogTime time.Time
 
 	for {
+		waitCtx, cancel := context.WithDeadline(ctx, nextWarning)
+		err := cc.store.WaitForVersion(waitCtx, minVersion)
+		cancel()
+		if ctx.Err() != nil {
+			return nil
+		}
+		if err == nil {
+			break
+		}
+		if errors.Is(err, store.ErrInvalidStoreVersion) {
+			return fmt.Errorf("wait for minimum cluster store version: %w", err)
+		}
+
+		if !time.Now().Before(nextWarning) {
+			slog.Warn("Cluster store sync still pending. Check connectivity to peers.")
+			nextWarning = time.Now().Add(warnInterval)
+			continue
+		}
+
+		// Retry store errors, throttling logs to once every 5 seconds.
+		if time.Since(lastErrLogTime) >= 5*time.Second {
+			slog.Error("Failed to check cluster store replication, retrying.", "err", err)
+			lastErrLogTime = time.Now()
+		}
 		select {
 		case <-ctx.Done():
 			return nil
-		case <-warnTimer.C:
-			local, err := cc.store.Version(ctx)
-			if err == nil {
-				slog.Error("Cluster store sync still pending. Check connectivity to peers.",
-					"lagging_actors", laggingActors(local, target))
-			} else {
-				slog.Error("Cluster store sync still pending. Check connectivity to peers.", "err", err)
-			}
-			warnTimer.Reset(warnInterval)
-		case <-ticker.C:
-			local, err := cc.store.Version(ctx)
-			if err != nil {
-				// Throttle error logs to once every 5 seconds.
-				if time.Since(lastErrLogTime) >= 5*time.Second {
-					slog.Error("Failed to get the cluster store version, retrying.", "err", err)
-					lastErrLogTime = time.Now()
-				}
-				continue
-			}
-
-			lagging := laggingActors(local, target)
-			if len(lagging) == 0 {
-				// Per-actor max doesn't imply contiguous apply: corrosion can buffer X:N before
-				// X:N-1 arrives and track the gap separately. Wait for any remaining gaps to be synced.
-				if err := cc.waitKnownMissingChanges(ctx); err != nil {
-					return fmt.Errorf("wait for known missing changes: %w", err)
-				}
-				// If the context was cancelled mid-gap-fill, don't persist a "synced" state.
-				if ctx.Err() != nil {
-					return nil
-				}
-
-				// Clear MinStoreVersion so next restart doesn't wait for sync.
-				cc.state.mu.Lock()
-				cc.state.MinStoreVersion = nil
-				err = cc.state.Save()
-				cc.state.mu.Unlock()
-				if err != nil {
-					return fmt.Errorf("save machine state after the initial cluster store sync: %w", err)
-				}
-
-				slog.Info("Cluster store completed the initial sync.", "actors", len(target))
-				return nil
-			}
-
-			if len(lagging) != lastLagging {
-				slog.Info("Syncing cluster store.", "lagging_actors", lagging)
-				lastLagging = len(lagging)
-			}
+		case <-time.After(500 * time.Millisecond):
 		}
 	}
-}
 
-// laggingActors returns target actors whose local version is below the required value, as [have, need].
-func laggingActors(local, target map[string]int64) map[string][2]int64 {
-	lagging := make(map[string][2]int64)
-	for actor, need := range target {
-		if have := local[actor]; have < need {
-			lagging[actor] = [2]int64{have, need}
-		}
+	// Clear MinStoreVersion so the next restart doesn't wait for sync.
+	cc.state.mu.Lock()
+	cc.state.MinStoreVersion = nil
+	err := cc.state.Save()
+	if err != nil {
+		cc.state.MinStoreVersion = minVersion
 	}
-	return lagging
-}
-
-// waitKnownMissingChanges polls the store until all known missing changes have been synced.
-func (cc *clusterController) waitKnownMissingChanges(ctx context.Context) error {
-	ticker := time.NewTicker(1 * time.Second)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ctx.Done():
-			return nil
-		case <-ticker.C:
-			changes, err := cc.store.KnownMissingChanges(ctx)
-			if err != nil {
-				return fmt.Errorf("query known missing changes from cluster store: %w", err)
-			}
-
-			if len(changes) == 0 {
-				slog.Debug("All known missing changes have been synced to the cluster store.")
-				return nil
-			}
-
-			slog.Debug("Waiting for known missing changes to be synced to the cluster store.", "remaining",
-				len(changes))
-		}
+	cc.state.mu.Unlock()
+	if err != nil {
+		return fmt.Errorf("save machine state after the initial cluster store sync: %w", err)
 	}
+
+	slog.Info("Cluster store completed the initial sync.", "min_version", minVersion)
+	return nil
 }
 
 // runMachineSync keeps this machine's info in the cluster store in sync with the local state and the Docker engine

internal/machine/cluster/cluster.go

@@ -9,8 +9,8 @@ import (
 	"net/netip"
 	"time"
 
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/corrosion"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/psviderski/uncloud/internal/machine/store"
 	"github.com/psviderski/uncloud/internal/secret"

internal/machine/cluster/dns.go

@@ -5,8 +5,8 @@ import (
 	"encoding/json"
 	"errors"
 
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/dns"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/store"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"

internal/machine/corromigrate/migrate.go

@@ -15,8 +15,8 @@ import (
 	"path/filepath"
 	"time"
 
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/fs"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/store"
 	"google.golang.org/protobuf/encoding/protojson"
 	_ "modernc.org/sqlite"

internal/machine/docker/client.go

@@ -15,8 +15,8 @@ import (
 	"github.com/docker/docker/pkg/jsonmessage"
 	regtypes "github.com/google/go-containerregistry/pkg/v1/types"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/docker"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"

internal/machine/docker/client_exec.go

@@ -10,7 +10,7 @@ import (
 	"os/signal"
 
 	"github.com/moby/term"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"golang.org/x/sync/errgroup"
 	"golang.org/x/sys/unix"

internal/machine/docker/server.go

@@ -40,7 +40,7 @@ import (
 	"github.com/jmoiron/sqlx"
 	"github.com/opencontainers/go-digest"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/dns"
 	"github.com/psviderski/uncloud/internal/secret"
 	"github.com/psviderski/uncloud/pkg/api"

internal/machine/machine.go

@@ -21,14 +21,15 @@ import (
 	"github.com/containerd/errdefs"
 	"github.com/docker/docker/client"
 	"github.com/docker/go-connections/sockets"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/corrosion"
 	"github.com/psviderski/uncloud/internal/docker"
 	"github.com/psviderski/uncloud/internal/fs"
 	"github.com/psviderski/uncloud/internal/grpcversion"
 	"github.com/psviderski/uncloud/internal/journal"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	apiproxy "github.com/psviderski/uncloud/internal/machine/api/proxy"
 	"github.com/psviderski/uncloud/internal/machine/caddyconfig"
+	"github.com/psviderski/uncloud/internal/machine/caddystorage"
 	"github.com/psviderski/uncloud/internal/machine/cluster"
 	"github.com/psviderski/uncloud/internal/machine/constants"
 	"github.com/psviderski/uncloud/internal/machine/corromigrate"
@@ -307,8 +308,15 @@ func NewMachine(config *Config) (*Machine, error) {
 		WaitForNetworkReady: m.WaitForNetworkReady,
 	})
 	caddyServer := caddyconfig.NewServer(caddyconfig.NewService(config.CaddyConfigDir))
+
+	caddyStore, err := corroStore.Keyspace(caddystorage.Namespace)
+	if err != nil {
+		return nil, fmt.Errorf("create namespaced cluster store for Caddy storage: %w", err)
+	}
+	caddyStorageServer := caddystorage.NewServer(caddyStore)
+
 	leaseServer := distlockgrpc.NewServer(distlock.NewMemoryStore())
-	m.localMachineServer = newGRPCServer(m, c, m.dockerServer, caddyServer, leaseServer)
+	m.localMachineServer = newGRPCServer(m, c, m.dockerServer, caddyServer, caddyStorageServer, leaseServer)
 
 	if m.Initialised() {
 		close(m.initialised)
@@ -322,6 +330,7 @@ func newGRPCServer(
 	c pb.ClusterServer,
 	d pb.DockerServer,
 	caddy pb.CaddyServer,
+	caddyStorage pb.CaddyStorageServer,
 	lease distlockgrpc.LeaseServer,
 ) *grpc.Server {
 	s := grpc.NewServer()
@@ -329,6 +338,7 @@ func newGRPCServer(
 	pb.RegisterClusterServer(s, c)
 	pb.RegisterDockerServer(s, d)
 	pb.RegisterCaddyServer(s, caddy)
+	pb.RegisterCaddyStorageServer(s, caddyStorage)
 	distlockgrpc.RegisterLeaseServer(s, lease)
 	return s
 }
@@ -1114,6 +1124,19 @@ func (m *Machine) InspectMachine(ctx context.Context, _ *emptypb.Empty) (*pb.Ins
 	}, nil
 }
 
+func (m *Machine) WaitForStoreVersion(ctx context.Context, req *pb.WaitForStoreVersionRequest) (*emptypb.Empty, error) {
+	if err := m.store.WaitForVersion(ctx, req.MinVersion); err != nil {
+		if ctx.Err() != nil {
+			return nil, status.FromContextError(ctx.Err()).Err()
+		}
+		if errors.Is(err, store.ErrInvalidStoreVersion) {
+			return nil, status.Error(codes.InvalidArgument, err.Error())
+		}
+		return nil, status.Error(codes.Internal, err.Error())
+	}
+	return &emptypb.Empty{}, nil
+}
+
 // UpdateMachine updates the configuration of this machine in its local state (the source of truth) and syncs
 // the result to the cluster store.
 func (m *Machine) UpdateMachine(ctx context.Context, req *pb.UpdateMachineRequest) (*pb.UpdateMachineResponse, error) {

internal/machine/machine_info_test.go

@@ -5,7 +5,7 @@ import (
 	"net/netip"
 	"testing"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

internal/machine/state.go

@@ -29,9 +29,9 @@ type State struct {
 	// PublicIP is this machine's advertised public IP for ingress. Zero value if unset.
 	PublicIP netip.Addr `json:",omitempty"`
 	// MinStoreVersion is the cluster store version this machine must reach before participating.
-	// Per-actor vector (Corrosion actor UUID → max applied db_version) captured from an existing
+	// Per-actor vector (Corrosion actor UUID → max processed db_version) captured from an existing
 	// member at join time. Cleared once reached.
-	MinStoreVersion map[string]int64 `json:",omitempty"`
+	MinStoreVersion map[string]uint64 `json:",omitempty"`
 	// CorrosionAPIToken authenticates requests to the local Corrosion API.
 	CorrosionAPIToken secret.Secret `json:",omitempty"`
 

internal/machine/store/keyspace.go

@@ -0,0 +1,167 @@
+package store
+
+import (
+	"context"
+	"fmt"
+	"regexp"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"github.com/psviderski/uncloud/internal/corrosion"
+)
+
+const namespaceSeparator = ":"
+
+var namespacePattern = regexp.MustCompile(`^[a-z][a-z0-9]*(?:[_-][a-z0-9]+)*$`)
+
+// Record is a key-value entry and its metadata.
+type Record struct {
+	Key       string
+	Value     []byte
+	UpdatedAt time.Time
+}
+
+// KeyspaceListOptions controls the records returned by [Keyspace.List].
+type KeyspaceListOptions struct {
+	// KeysOnly omits record values from the query when true.
+	KeysOnly bool
+}
+
+// KeyspaceDeleteOptions controls which records [Keyspace.Delete] deletes.
+type KeyspaceDeleteOptions struct {
+	// Prefix deletes the key and every key that starts with it.
+	Prefix bool
+}
+
+// Keyspace provides namespace-scoped key-value storage.
+// Keys are relative to the namespace. Prefix operations use simple string-prefix matching.
+type Keyspace struct {
+	corro     *corrosion.APIClient
+	namespace string
+}
+
+// Keyspace returns key-value storage scoped to namespace.
+func (s *Store) Keyspace(namespace string) (*Keyspace, error) {
+	if !namespacePattern.MatchString(namespace) {
+		return nil, fmt.Errorf("invalid namespace %q", namespace)
+	}
+	return &Keyspace{
+		corro:     s.corro,
+		namespace: namespace,
+	}, nil
+}
+
+// Get returns the entry for key. It returns [ErrKeyNotFound] when the key does not exist.
+func (k *Keyspace) Get(ctx context.Context, key string) (Record, error) {
+	if key == "" {
+		return Record{}, fmt.Errorf("key is empty")
+	}
+
+	rows, err := k.corro.QueryContext(ctx, "SELECT value, updated_at FROM cluster WHERE key = ?", k.namespacedKey(key))
+	if err != nil {
+		return Record{}, err
+	}
+	defer rows.Close()
+
+	if !rows.Next() {
+		if err = rows.Err(); err != nil {
+			return Record{}, err
+		}
+		return Record{}, ErrKeyNotFound
+	}
+
+	record := Record{Key: key}
+	var updatedAt string
+	if err = rows.Scan(&record.Value, &updatedAt); err != nil {
+		return Record{}, err
+	}
+	if record.UpdatedAt, err = parseTimestamp(updatedAt); err != nil {
+		return Record{}, fmt.Errorf("parse updated_at for key %q: %w", key, err)
+	}
+	return record, nil
+}
+
+// Put stores value at key.
+func (k *Keyspace) Put(ctx context.Context, key string, value []byte) error {
+	if key == "" {
+		return fmt.Errorf("key is empty")
+	}
+
+	_, err := k.corro.ExecContext(ctx,
+		"INSERT OR REPLACE INTO cluster (key, value, updated_at) VALUES (?, ?, datetime('now', 'subsec'))",
+		k.namespacedKey(key), value)
+	return err
+}
+
+// Delete deletes key. When Prefix is true, it also deletes every key that starts with key.
+func (k *Keyspace) Delete(ctx context.Context, key string, opts KeyspaceDeleteOptions) error {
+	if key == "" {
+		return fmt.Errorf("key is empty")
+	}
+
+	namespacedKey := k.namespacedKey(key)
+	if !opts.Prefix {
+		_, err := k.corro.ExecContext(ctx, "DELETE FROM cluster WHERE key = ?", namespacedKey)
+		return err
+	}
+
+	_, err := k.corro.ExecContext(ctx, `DELETE FROM cluster WHERE key >= ? AND key < ?`,
+		namespacedKey, prefixRangeEnd(namespacedKey))
+	return err
+}
+
+// List returns entries whose keys start with prefix, ordered by key. An empty prefix lists every entry in the keyspace.
+func (k *Keyspace) List(ctx context.Context, prefix string, opts KeyspaceListOptions) ([]Record, error) {
+	keyspacePrefix := k.namespacedKey("")
+	namespacedPrefix := k.namespacedKey(prefix)
+	query := "SELECT key, value, updated_at FROM cluster WHERE key >= ? AND key < ? ORDER BY key"
+	if opts.KeysOnly {
+		query = "SELECT key, updated_at FROM cluster WHERE key >= ? AND key < ? ORDER BY key"
+	}
+
+	rows, err := k.corro.QueryContext(ctx, query, namespacedPrefix, prefixRangeEnd(namespacedPrefix))
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var records []Record
+	for rows.Next() {
+		var (
+			record    Record
+			updatedAt string
+		)
+		if opts.KeysOnly {
+			err = rows.Scan(&record.Key, &updatedAt)
+		} else {
+			err = rows.Scan(&record.Key, &record.Value, &updatedAt)
+		}
+		if err != nil {
+			return nil, err
+		}
+		if record.UpdatedAt, err = parseTimestamp(updatedAt); err != nil {
+			return nil, fmt.Errorf("parse updated_at for key %q: %w", record.Key, err)
+		}
+		record.Key = strings.TrimPrefix(record.Key, keyspacePrefix)
+		records = append(records, record)
+	}
+	if err = rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return records, nil
+}
+
+func (k *Keyspace) namespacedKey(key string) string {
+	return k.namespace + namespaceSeparator + key
+}
+
+func parseTimestamp(value string) (time.Time, error) {
+	return time.Parse(time.DateTime, value)
+}
+
+// prefixRangeEnd returns an exclusive upper bound for a key prefix.
+func prefixRangeEnd(prefix string) string {
+	return prefix + string(utf8.MaxRune)
+}

internal/machine/store/replication.go

@@ -0,0 +1,106 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// ErrInvalidStoreVersion indicates an invalid actor UUID in a store version vector.
+var ErrInvalidStoreVersion = errors.New("invalid store version")
+
+// WaitForVersion waits until the local store has reached each actor's minimum version in minVersion, with no known
+// missing or pending transactions through those versions. Corrosion may satisfy a version by applying its surviving
+// changes or by marking it complete because its changes have been superseded.
+//
+// Waiting normally makes the captured data available locally. However, if another write replaces some of that data
+// before it arrives, Corrosion can complete the older version without transferring the replaced data. If the
+// replacement is outside minVersion, this method can return while the affected data is still missing or outdated.
+// This can happen during concurrent updates even when all machines are well connected.
+//
+// This method does not guarantee an exact snapshot or delivery of every historical value.
+// Callers that require a specific record or condition should verify it after waiting.
+//
+// The method observes native replication without initiating synchronisation.
+// An empty minVersion requires no replication. The context controls cancellation and the deadline.
+func (s *Store) WaitForVersion(ctx context.Context, minVersion map[string]uint64) error {
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+
+	placeholders := make([]string, 0, len(minVersion))
+	args := make([]any, 0, 2*len(minVersion))
+	for actor, version := range minVersion {
+		actorID, err := uuid.Parse(actor)
+		if err != nil {
+			return fmt.Errorf("%w: actor '%s' is not a UUID: %v", ErrInvalidStoreVersion, actor, err)
+		}
+		if version == 0 {
+			continue
+		}
+
+		// Corrosion accepts a JSON array of bytes as a BLOB parameter. A UUID marshals as a string,
+		// and a byte slice marshals as base64, so use a plain fixed-size array instead.
+		placeholders = append(placeholders, "(?, ?)")
+		args = append(args, [16]byte(actorID), version)
+	}
+	if len(args) == 0 {
+		return nil
+	}
+
+	// Check all bookkeeping in one SQLite snapshot. Raw buffered rows can remain after application,
+	// but sequence bookkeeping is removed in the same transaction that applies or clears a version.
+	query := `WITH min_version(actor_id, version) AS (VALUES ` + strings.Join(placeholders, ", ") + `)
+		SELECT NOT EXISTS (
+			SELECT 1 FROM min_version
+			LEFT JOIN crsql_db_versions AS current ON current.site_id = min_version.actor_id
+			WHERE COALESCE(current.db_version, 0) < min_version.version
+				OR EXISTS (
+					SELECT 1 FROM __corro_bookkeeping_gaps
+					WHERE actor_id = min_version.actor_id AND start <= min_version.version
+				)
+				OR EXISTS (
+					SELECT 1 FROM __corro_seq_bookkeeping
+					WHERE site_id = min_version.actor_id AND db_version <= min_version.version
+				)
+		)`
+
+	ticker := time.NewTicker(100 * time.Millisecond)
+	defer ticker.Stop()
+
+	for {
+		rows, err := s.corro.QueryContext(ctx, query, args...)
+		if err != nil {
+			return fmt.Errorf("check store replication: %w", err)
+		}
+		if !rows.Next() {
+			if err = rows.Err(); err != nil {
+				return fmt.Errorf("check store replication: %w", err)
+			}
+			return errors.New("check store replication: store version query returned no rows")
+		}
+		var reached int
+		if err = rows.Scan(&reached); err != nil {
+			rows.Close()
+			return fmt.Errorf("check store replication: %w", err)
+		}
+		rows.Next() // Consume the end-of-query event.
+		rows.Close()
+		if err = rows.Err(); err != nil {
+			return fmt.Errorf("check store replication: %w", err)
+		}
+		if reached == 1 {
+			return ctx.Err()
+		}
+
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case <-ticker.C:
+		}
+	}
+}

internal/machine/store/store.go

@@ -3,14 +3,13 @@ package store
 import (
 	"context"
 	_ "embed"
-	"encoding/hex"
 	"errors"
 	"fmt"
 	"log/slog"
 
 	"github.com/google/uuid"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/corrosion"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"google.golang.org/protobuf/encoding/protojson"
 )
 
@@ -31,14 +30,19 @@ func New(corro *corrosion.APIClient) *Store {
 	return &Store{corro: corro}
 }
 
+// Get retrieves an unnamespaced legacy value.
+//
+// Deprecated: Existing callers may continue to use Get for legacy records. New
+// code should use [Store.Keyspace].
 func (s *Store) Get(ctx context.Context, key string, value any) error {
 	rows, err := s.corro.QueryContext(ctx, "SELECT value FROM cluster WHERE key = ?", key)
 	if err != nil {
 		return err
 	}
+	defer rows.Close()
 	if !rows.Next() {
-		if rows.Err() != nil {
-			return rows.Err()
+		if err = rows.Err(); err != nil {
+			return err
 		}
 		return ErrKeyNotFound
 	}
@@ -48,32 +52,47 @@ func (s *Store) Get(ctx context.Context, key string, value any) error {
 	return nil
 }
 
+// Put stores an unnamespaced legacy value.
+//
+// Deprecated: Existing callers may continue to use Put for legacy records. New
+// code should use [Store.Keyspace].
 func (s *Store) Put(ctx context.Context, key string, value any) error {
 	_, err := s.corro.ExecContext(ctx,
-		"INSERT OR REPLACE INTO cluster (key, value, updated_at) VALUES (?, ?, datetime('now'))",
+		"INSERT OR REPLACE INTO cluster (key, value, updated_at) VALUES (?, ?, datetime('now', 'subsec'))",
 		key, value)
 	return err
 }
 
+// Delete deletes an unnamespaced legacy value.
+//
+// Deprecated: Existing callers may continue to use Delete for legacy records.
+// New code should use [Store.Keyspace].
 func (s *Store) Delete(ctx context.Context, key string) error {
 	_, err := s.corro.ExecContext(ctx, "DELETE FROM cluster WHERE key = ?", key)
 	return err
 }
 
-// Version returns the cluster store's per-actor version vector:
-// Corrosion actor ID (UUID string) → max received db_version for that actor.
-func (s *Store) Version(ctx context.Context) (map[string]int64, error) {
+// Version returns the replication progress observed by this store.
+// Each entry maps a Corrosion actor UUID to its highest processed database version. Corrosion also counts versions
+// whose changes were superseded and skipped. Versions at or below a reported version may still be missing or pending
+// locally.
+//
+// You can use [Store.WaitForVersion] to wait for replication through these versions, subject to the data-availability
+// limitations documented there.
+//
+// Capturing a vector does not wait for replication or prevent further writes.
+func (s *Store) Version(ctx context.Context) (map[string]uint64, error) {
 	rows, err := s.corro.QueryContext(ctx, "SELECT site_id, db_version FROM crsql_db_versions")
 	if err != nil {
 		return nil, fmt.Errorf("query crsql_db_versions: %w", err)
 	}
 	defer rows.Close()
 
-	versions := make(map[string]int64)
+	versions := make(map[string]uint64)
 	for rows.Next() {
 		var (
 			siteID  []byte
-			version int64
+			version uint64
 		)
 		if err = rows.Scan(&siteID, &version); err != nil {
 			return nil, fmt.Errorf("scan actor version: %w", err)
@@ -87,35 +106,6 @@ func (s *Store) Version(ctx context.Context) (map[string]int64, error) {
 	return versions, nil
 }
 
-type MissingChange struct {
-	ActorID      string
-	StartVersion int64
-	EndVersion   int64
-}
-
-// KnownMissingChanges returns a list of currently known missing changes in the Corrosion database.
-func (s *Store) KnownMissingChanges(ctx context.Context) ([]MissingChange, error) {
-	rows, err := s.corro.QueryContext(ctx, "SELECT actor_id, start, end FROM __corro_bookkeeping_gaps")
-	if err != nil {
-		return nil, fmt.Errorf("query missing changes: %w", err)
-	}
-	defer rows.Close()
-
-	var changes []MissingChange
-	for rows.Next() {
-		var c MissingChange
-		var actorBytes []byte
-		if err = rows.Scan(&actorBytes, &c.StartVersion, &c.EndVersion); err != nil {
-			return nil, fmt.Errorf("scan missing change: %w", err)
-		}
-
-		c.ActorID = hex.EncodeToString(actorBytes)
-		changes = append(changes, c)
-	}
-
-	return changes, nil
-}
-
 func (s *Store) CreateMachine(ctx context.Context, m *pb.MachineInfo) error {
 	mJSON, err := protojson.Marshal(m)
 	if err != nil {

internal/ucind/cluster.go

@@ -13,8 +13,8 @@ import (
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/api/types/network"
 	"github.com/docker/go-connections/nat"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/machine"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/cluster"
 	"google.golang.org/protobuf/types/known/emptypb"
 )

mise.toml

@@ -44,7 +44,7 @@ run = "mise lock --platform linux-x64,macos-arm64"
 description = "Regenerate gRPC API code from .proto files"
 run = """
 protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative \
-  --proto_path=. --proto_path=internal/machine/api/vendor internal/machine/api/pb/*.proto pkg/distlock/grpc/*.proto
+  --proto_path=. --proto_path=api/pb/vendor api/pb/*.proto pkg/distlock/grpc/*.proto
 """
 
 [tasks.uc]

pkg/api/client.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/volume"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 )
 
 type Client interface {

pkg/api/image.go

@@ -6,7 +6,7 @@ import (
 	"github.com/distribution/reference"
 	"github.com/docker/docker/api/types/image"
 	v1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 )
 
 type MachineImage struct {

pkg/api/logs.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"time"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 )
 
 const (

pkg/api/machine.go

@@ -4,7 +4,7 @@ import (
 	"net/netip"
 	"strings"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 )
 
 // MachineFilter defines criteria to filter machines in ListMachines.

pkg/api/machine_test.go

@@ -5,7 +5,7 @@ import (
 	"net/netip"
 	"testing"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )

pkg/api/service.go

@@ -13,7 +13,7 @@ import (
 	"github.com/distribution/reference"
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 )
 
 const (

pkg/client/client.go

@@ -7,7 +7,7 @@ import (
 	"os"
 
 	"github.com/docker/cli/cli/streams"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/docker"
 	"github.com/psviderski/uncloud/pkg/api"
 	distlockgrpc "github.com/psviderski/uncloud/pkg/distlock/grpc"
@@ -25,7 +25,8 @@ type Client struct {
 	//  Methods such as Reset or Inspect are ambiguous in the context of a machine+cluster client.
 	pb.MachineClient
 	pb.ClusterClient
-	Caddy pb.CaddyClient
+	Caddy        pb.CaddyClient
+	CaddyStorage pb.CaddyStorageClient
 	// Docker is a namespaced client for the Docker service to distinguish Uncloud-specific service container operations
 	// from generic Docker operations.
 	Docker *docker.Client
@@ -58,6 +59,7 @@ func New(ctx context.Context, connector Connector) (*Client, error) {
 	c.MachineClient = pb.NewMachineClient(c.conn)
 	c.ClusterClient = pb.NewClusterClient(c.conn)
 	c.Caddy = pb.NewCaddyClient(c.conn)
+	c.CaddyStorage = pb.NewCaddyStorageClient(c.conn)
 	c.Docker = docker.NewClient(c.conn)
 	c.leases = distlockgrpc.NewLeaseClient(c.conn)
 

pkg/client/compose/project_test.go

@@ -345,19 +345,7 @@ configs:
 			warnContains: []string{"container_name"},
 		},
 		{
-			name: "deploy mode",
-			composeYAML: `services:
-  app:
-    image: myapp:latest
-    deploy:
-      mode: replicated-job
-      replicas: 2
-`,
-			warnCount:    1,
-			warnContains: []string{"deploy mode must"},
-		},
-		{
-			name: "deploy mode",
+			name: "deploy labels",
 			composeYAML: `services:
   app:
     image: myapp:latest

pkg/client/compose/service.go

@@ -502,7 +502,8 @@ func validateServicesFeatures(project *types.Project) []error {
 			errs = append(errs, err(service.Name, "container_name"))
 		}
 		if service.Deploy != nil {
-			if len(service.Deploy.Placement.Constraints) > 0 || len(service.Deploy.Placement.Preferences) > 0 {
+			if len(service.Deploy.Placement.Constraints) > 0 || len(service.Deploy.Placement.Preferences) > 0 ||
+				service.Deploy.Placement.MaxReplicas > 0 {
 				errs = append(errs, fmt.Errorf(
 					"service '%s': deploy placement is not supported, "+
 						"use x-machines instead: %s", service.Name,
@@ -513,10 +514,6 @@ func validateServicesFeatures(project *types.Project) []error {
 				errs = append(errs, fmt.Errorf(
 					"service '%s': deploy restart_policy defaults to 'unless-stopped'", service.Name))
 			}
-			if service.Deploy.Mode != "" && service.Deploy.Mode != "global" && service.Deploy.Mode != "replicated" {
-				errs = append(errs, fmt.Errorf(
-					"service '%s': deploy mode must either be 'global' or 'replicated'", service.Name))
-			}
 			if service.Deploy.RollbackConfig != nil {
 				errs = append(errs, err(service.Name, "deploy rollback_config"))
 			}

pkg/client/container.go

@@ -11,9 +11,9 @@ import (
 	"github.com/docker/compose/v2/pkg/progress"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/pkg/jsonmessage"
+	"github.com/psviderski/uncloud/api/pb"
 	cliprogress "github.com/psviderski/uncloud/internal/cli/progress"
 	"github.com/psviderski/uncloud/internal/docker"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	machinedocker "github.com/psviderski/uncloud/internal/machine/docker"
 	"github.com/psviderski/uncloud/internal/secret"
 	"github.com/psviderski/uncloud/pkg/api"

pkg/client/deploy/scheduler/service.go

@@ -3,7 +3,7 @@ package scheduler
 import (
 	"errors"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 )
 

pkg/client/deploy/scheduler/state.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 
 	"github.com/docker/docker/api/types/volume"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 )
 

pkg/client/deploy/scheduler/volume_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/docker/docker/api/types/mount"
 	"github.com/docker/docker/api/types/volume"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

pkg/client/deploy/strategy.go

@@ -5,7 +5,7 @@ import (
 	"math/rand/v2"
 	"slices"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/secret"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/psviderski/uncloud/pkg/client/deploy/operation"

pkg/client/deploy/strategy_test.go

@@ -6,7 +6,7 @@ import (
 	"github.com/docker/docker/api/types/container"
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/psviderski/uncloud/pkg/client/deploy/operation"
 	"github.com/psviderski/uncloud/pkg/client/deploy/scheduler"

pkg/client/dns.go

@@ -13,8 +13,8 @@ import (
 
 	"github.com/cenkalti/backoff/v4"
 	"github.com/docker/compose/v2/pkg/progress"
+	"github.com/psviderski/uncloud/api/pb"
 	cliprogress "github.com/psviderski/uncloud/internal/cli/progress"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/caddyconfig"
 	"github.com/psviderski/uncloud/pkg/api"
 	"google.golang.org/grpc/codes"

pkg/client/dns_internal_test.go

@@ -5,7 +5,7 @@ import (
 	"net/netip"
 	"testing"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )

pkg/client/image.go

@@ -25,9 +25,9 @@ import (
 	"github.com/docker/docker/pkg/jsonmessage"
 	"github.com/docker/go-connections/nat"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli/tui"
 	"github.com/psviderski/uncloud/internal/docker"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/constants"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/psviderski/uncloud/internal/proxy"

pkg/client/logs.go

@@ -9,7 +9,7 @@ import (
 	"slices"
 
 	"github.com/docker/docker/pkg/stringid"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 )
 

pkg/client/machine.go

@@ -7,7 +7,7 @@ import (
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -141,3 +141,23 @@ func (cli *Client) WaitClusterReady(ctx context.Context, timeout time.Duration)
 	}
 	return backoff.Retry(listMachines, boff)
 }
+
+// WaitForStoreVersion waits until the cluster store on the target machine has reached each requested actor version
+// in minVersion, with no known missing or pending transactions through those versions.
+// The context controls cancellation and the deadline. An empty minVersion requires no replication.
+// This method observes replication without initiating synchronisation.
+//
+// Corrosion may satisfy a version by applying its surviving changes or by marking it complete because its changes
+// have been superseded.
+//
+// Waiting normally makes the captured data available on the machine. However, another write may replace some of that
+// data before it arrives. Corrosion can then complete the older version without transferring the replaced data.
+// If the replacement is outside the requested versions, this method can succeed while the affected data is still
+// missing or outdated. This can happen during concurrent updates even when all machines are well connected.
+//
+// Success does not guarantee an exact snapshot or delivery of every historical value.
+// Callers that require a specific record or condition should verify it after waiting.
+func (cli *Client) WaitForStoreVersion(ctx context.Context, minVersion map[string]uint64) error {
+	_, err := cli.MachineClient.WaitForStoreVersion(ctx, &pb.WaitForStoreVersionRequest{MinVersion: minVersion})
+	return err
+}

pkg/client/service.go

@@ -9,8 +9,8 @@ import (
 
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/volume"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/cli/tui"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/psviderski/uncloud/pkg/client/deploy/scheduler"
 	"google.golang.org/grpc/codes"

pkg/distlock/grpc/server_test.go

@@ -0,0 +1,170 @@
+package grpc_test
+
+import (
+	"context"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/psviderski/uncloud/pkg/distlock"
+	distlockgrpc "github.com/psviderski/uncloud/pkg/distlock/grpc"
+	"github.com/stretchr/testify/require"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/status"
+	"google.golang.org/grpc/test/bufconn"
+	"google.golang.org/protobuf/types/known/durationpb"
+)
+
+func newTestLeaseClient(t *testing.T) distlockgrpc.LeaseClient {
+	t.Helper()
+
+	listener := bufconn.Listen(1024 * 1024)
+	server := grpc.NewServer()
+	distlockgrpc.RegisterLeaseServer(server, distlockgrpc.NewServer(distlock.NewMemoryStore()))
+	serveErr := make(chan error, 1)
+	go func() {
+		serveErr <- server.Serve(listener)
+	}()
+
+	conn, err := grpc.NewClient(
+		"passthrough:///distlock",
+		grpc.WithContextDialer(func(ctx context.Context, _ string) (net.Conn, error) {
+			return listener.DialContext(ctx)
+		}),
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+	)
+	require.NoError(t, err)
+
+	t.Cleanup(func() {
+		require.NoError(t, conn.Close())
+		server.Stop()
+		if err := <-serveErr; err != nil {
+			require.ErrorIs(t, err, grpc.ErrServerStopped)
+		}
+	})
+
+	return distlockgrpc.NewLeaseClient(conn)
+}
+
+func TestLeaseClientServerLifecycle(t *testing.T) {
+	client := newTestLeaseClient(t)
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	ttl := durationpb.New(time.Minute)
+	ownerToken := []byte("owner")
+	otherToken := []byte("other")
+
+	acquired, err := client.Acquire(ctx, &distlockgrpc.AcquireLeaseRequest{
+		Resource: "resource",
+		Token:    ownerToken,
+		Ttl:      ttl,
+	})
+	require.NoError(t, err)
+	require.True(t, acquired.Acquired)
+
+	acquired, err = client.Acquire(ctx, &distlockgrpc.AcquireLeaseRequest{
+		Resource: "resource",
+		Token:    otherToken,
+		Ttl:      ttl,
+	})
+	require.NoError(t, err)
+	require.False(t, acquired.Acquired)
+
+	renewed, err := client.Renew(ctx, &distlockgrpc.RenewLeaseRequest{
+		Resource: "resource",
+		Token:    otherToken,
+		Ttl:      ttl,
+	})
+	require.NoError(t, err)
+	require.False(t, renewed.Renewed)
+
+	renewed, err = client.Renew(ctx, &distlockgrpc.RenewLeaseRequest{
+		Resource: "resource",
+		Token:    ownerToken,
+		Ttl:      ttl,
+	})
+	require.NoError(t, err)
+	require.True(t, renewed.Renewed)
+
+	released, err := client.Release(ctx, &distlockgrpc.ReleaseLeaseRequest{
+		Resource: "resource",
+		Token:    otherToken,
+	})
+	require.NoError(t, err)
+	require.False(t, released.Released)
+
+	released, err = client.Release(ctx, &distlockgrpc.ReleaseLeaseRequest{
+		Resource: "resource",
+		Token:    ownerToken,
+	})
+	require.NoError(t, err)
+	require.True(t, released.Released)
+
+	acquired, err = client.Acquire(ctx, &distlockgrpc.AcquireLeaseRequest{
+		Resource: "resource",
+		Token:    otherToken,
+		Ttl:      ttl,
+	})
+	require.NoError(t, err)
+	require.True(t, acquired.Acquired)
+}
+
+func TestLeaseClientServerRejectsInvalidRequests(t *testing.T) {
+	client := newTestLeaseClient(t)
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	tests := []struct {
+		name string
+		call func(context.Context) error
+	}{
+		{
+			name: "acquire without resource",
+			call: func(ctx context.Context) error {
+				_, err := client.Acquire(ctx, &distlockgrpc.AcquireLeaseRequest{
+					Token: []byte("owner"),
+					Ttl:   durationpb.New(time.Minute),
+				})
+				return err
+			},
+		},
+		{
+			name: "acquire without TTL",
+			call: func(ctx context.Context) error {
+				_, err := client.Acquire(ctx, &distlockgrpc.AcquireLeaseRequest{
+					Resource: "resource",
+					Token:    []byte("owner"),
+				})
+				return err
+			},
+		},
+		{
+			name: "renew with non-positive TTL",
+			call: func(ctx context.Context) error {
+				_, err := client.Renew(ctx, &distlockgrpc.RenewLeaseRequest{
+					Resource: "resource",
+					Token:    []byte("owner"),
+					Ttl:      durationpb.New(0),
+				})
+				return err
+			},
+		},
+		{
+			name: "release without token",
+			call: func(ctx context.Context) error {
+				_, err := client.Release(ctx, &distlockgrpc.ReleaseLeaseRequest{Resource: "resource"})
+				return err
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := tt.call(ctx)
+			require.Error(t, err)
+			require.Equal(t, codes.InvalidArgument, status.Code(err))
+		})
+	}
+}

test/e2e/cluster_test.go

@@ -3,19 +3,23 @@ package e2e
 import (
 	"context"
 	"errors"
+	"maps"
 	"os"
 	"strings"
 	"testing"
 	"time"
 
 	dockerclient "github.com/docker/docker/client"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/google/uuid"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/ucind"
 	"github.com/psviderski/uncloud/pkg/client"
+	"github.com/psviderski/uncloud/pkg/distlock"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 func createTestCluster(
@@ -120,6 +124,267 @@ func TestClusterLifecycle(t *testing.T) {
 		}
 	})
 
+	t.Run("distributed lock", func(t *testing.T) {
+		cli0, err := c.Machines[0].Connect(ctx)
+		require.NoError(t, err)
+		t.Cleanup(func() {
+			require.NoError(t, cli0.Close())
+		})
+
+		cli1, err := c.Machines[1].Connect(ctx)
+		require.NoError(t, err)
+		t.Cleanup(func() {
+			require.NoError(t, cli1.Close())
+		})
+
+		firstLocker, err := cli0.NewLocker(distlock.Config{})
+		require.NoError(t, err)
+		secondLocker, err := cli1.NewLocker(distlock.Config{})
+		require.NoError(t, err)
+
+		acquire := func(locker *distlock.Locker) (*distlock.Lease, error) {
+			acquireCtx, cancel := context.WithTimeout(ctx, 15*time.Second)
+			defer cancel()
+			return locker.Acquire(acquireCtx, "e2e-lock")
+		}
+		release := func(lease *distlock.Lease) {
+			t.Helper()
+			if lease.Context().Err() != nil {
+				return
+			}
+			releaseCtx, cancel := context.WithTimeout(ctx, 15*time.Second)
+			defer cancel()
+			require.NoError(t, lease.Release(releaseCtx))
+		}
+
+		firstLease, err := acquire(firstLocker)
+		require.NoError(t, err)
+		t.Cleanup(func() {
+			release(firstLease)
+		})
+
+		contendingCtx, cancelContending := context.WithTimeout(ctx, 500*time.Millisecond)
+		contendingLease, err := secondLocker.Acquire(contendingCtx, "e2e-lock")
+		cancelContending()
+		require.ErrorIs(t, err, context.DeadlineExceeded)
+		require.Nil(t, contendingLease)
+
+		release(firstLease)
+
+		secondLease, err := acquire(secondLocker)
+		require.NoError(t, err)
+		t.Cleanup(func() {
+			release(secondLease)
+		})
+	})
+
+	t.Run("Caddy storage replication", func(t *testing.T) {
+		clients := make([]*client.Client, len(c.Machines))
+		for i, m := range c.Machines {
+			cli, err := m.Connect(ctx)
+			require.NoError(t, err)
+			t.Cleanup(func() {
+				require.NoError(t, cli.Close())
+			})
+			clients[i] = cli
+		}
+
+		storeVersion := func(clis ...*client.Client) map[string]uint64 {
+			t.Helper()
+			callCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
+			defer cancel()
+
+			version := make(map[string]uint64)
+			for _, cli := range clis {
+				resp, err := cli.MachineClient.InspectMachine(callCtx, &emptypb.Empty{})
+				require.NoError(t, err)
+				require.Len(t, resp.Machines, 1)
+				m := resp.Machines[0]
+				require.Len(t, m.StoreVersion, 3)
+				for actor, v := range m.StoreVersion {
+					version[actor] = max(version[actor], v)
+				}
+			}
+			return version
+		}
+		waitForStoreVersion := func(cli *client.Client, version map[string]uint64) {
+			t.Helper()
+			waitCtx, cancel := context.WithTimeout(ctx, 30*time.Second)
+			defer cancel()
+			err := cli.WaitForStoreVersion(waitCtx, version)
+			require.NoError(t, err)
+		}
+
+		prefix := "e2e/caddy-storage/" + uuid.NewString()
+		key := prefix + "/key/path"
+		otherKey := prefix + "/other-key"
+
+		// Keep reused test clusters clean if an assertion stops the test before its explicit deletes.
+		t.Cleanup(func() {
+			cleanupCtx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
+			defer cancel()
+			_, _ = clients[0].CaddyStorage.Delete(cleanupCtx, &pb.DeleteCaddyStorageRequest{Key: prefix})
+			_, _ = clients[1].CaddyStorage.Delete(cleanupCtx, &pb.DeleteCaddyStorageRequest{Key: prefix})
+		})
+
+		// Create and overwrite a key on the first machine before waiting for replication.
+		var updatedAt time.Time
+		for _, value := range [][]byte{[]byte("test-value"), []byte("replacement-value")} {
+			_, err := clients[0].CaddyStorage.Store(ctx, &pb.StoreCaddyStorageRequest{Key: key, Value: value})
+			require.NoError(t, err)
+
+			// A Load through another machine must find the value on the machine that accepted the local write,
+			// regardless of whether Corrosion has replicated it to the other machines yet.
+			loadResp, err := clients[1].CaddyStorage.Load(client.ProxySingleMachineContext(ctx, c.Machines[0].ID),
+				&pb.LoadCaddyStorageRequest{Key: key})
+			require.NoError(t, err)
+			require.Equal(t, value, loadResp.Value)
+			require.NoError(t, loadResp.UpdatedAt.CheckValid())
+			modified := loadResp.UpdatedAt.AsTime()
+			require.False(t, modified.IsZero(), "Stored value should have a valid updated_at timestamp")
+			if !updatedAt.IsZero() {
+				// Back-to-back writes can have the same timestamp.
+				require.False(t, modified.Before(updatedAt), "Overwriting a value should not move updated_at backwards")
+			}
+			updatedAt = modified
+		}
+
+		// Write a distinct key on the second machine, then capture the combined store version from both machines.
+		otherValue := []byte("second-value")
+		_, err := clients[1].CaddyStorage.Store(ctx, &pb.StoreCaddyStorageRequest{Key: otherKey, Value: otherValue})
+		require.NoError(t, err)
+		version := storeVersion(clients[0], clients[1])
+		values := map[string][]byte{key: []byte("replacement-value"), otherKey: otherValue}
+
+		// On each machine, wait for the store version to be reached, then verify that the final values are readable
+		// and that the Stat and List endpoints return the expected results.
+		for _, cli := range clients {
+			waitForStoreVersion(cli, version)
+
+			// Both final values must be readable locally as soon as the wait returns.
+			for k, v := range values {
+				resp, err := cli.CaddyStorage.Load(ctx, &pb.LoadCaddyStorageRequest{Key: k})
+				require.NoError(t, err)
+				assert.Equal(t, v, resp.Value)
+				require.NoError(t, resp.UpdatedAt.CheckValid())
+				if k == key {
+					assert.True(t, resp.UpdatedAt.AsTime().Equal(updatedAt))
+				}
+
+				statResp, err := cli.CaddyStorage.Stat(ctx, &pb.StatCaddyStorageRequest{Key: k})
+				require.NoError(t, err)
+				assert.Equal(t, k, statResp.Key)
+				assert.True(t, statResp.UpdatedAt.AsTime().Equal(resp.UpdatedAt.AsTime()))
+				assert.EqualValues(t, len(v), statResp.Size)
+				assert.True(t, statResp.IsTerminal)
+			}
+
+			// A path with descendants should exist as a directory even though no value is stored at that key.
+			statResp, err := cli.CaddyStorage.Stat(ctx, &pb.StatCaddyStorageRequest{Key: prefix + "/key"})
+			require.NoError(t, err)
+			assert.Equal(t, prefix+"/key", statResp.Key)
+			assert.Nil(t, statResp.UpdatedAt)
+			assert.EqualValues(t, 0, statResp.Size)
+			assert.False(t, statResp.IsTerminal)
+
+			listResp, err := cli.CaddyStorage.List(ctx, &pb.ListCaddyStorageRequest{Prefix: prefix, Recursive: true})
+			require.NoError(t, err)
+			assert.Equal(t, []string{prefix + "/key", key, otherKey}, listResp.Keys)
+
+			// A non-recursive list should only return the immediate child keys.
+			listResp, err = cli.CaddyStorage.List(ctx, &pb.ListCaddyStorageRequest{Prefix: prefix, Recursive: false})
+			require.NoError(t, err)
+			assert.Equal(t, []string{prefix + "/key", otherKey}, listResp.Keys)
+		}
+
+		// Delete through one machine. The deletion must reach the other replicas through Corrosion.
+		_, err = clients[2].CaddyStorage.Delete(ctx, &pb.DeleteCaddyStorageRequest{Key: prefix})
+		require.NoError(t, err)
+		version = storeVersion(clients[2])
+
+		for _, cli := range clients {
+			waitForStoreVersion(cli, version)
+
+			for k := range values {
+				_, err = cli.CaddyStorage.Load(ctx, &pb.LoadCaddyStorageRequest{Key: k})
+				assert.Equal(t, codes.NotFound, status.Code(err))
+				_, err = cli.CaddyStorage.Stat(ctx, &pb.StatCaddyStorageRequest{Key: k})
+				assert.Equal(t, codes.NotFound, status.Code(err))
+			}
+			_, err = cli.CaddyStorage.List(ctx, &pb.ListCaddyStorageRequest{Prefix: prefix, Recursive: true})
+			assert.Equal(t, codes.NotFound, status.Code(err))
+
+			// Delete is idempotent on each machine.
+			_, err = cli.CaddyStorage.Delete(ctx, &pb.DeleteCaddyStorageRequest{Key: prefix})
+			require.NoError(t, err)
+		}
+	})
+
+	t.Run("wait for store version edge cases", func(t *testing.T) {
+		ctx, cancel := context.WithTimeout(ctx, 15*time.Second)
+		defer cancel()
+
+		cli, err := c.Machines[0].Connect(ctx)
+		require.NoError(t, err)
+		t.Cleanup(func() {
+			require.NoError(t, cli.Close())
+		})
+
+		resp, err := cli.MachineClient.InspectMachine(ctx, &emptypb.Empty{})
+		require.NoError(t, err)
+		version := resp.Machines[0].StoreVersion
+		require.Len(t, version, 3)
+
+		t.Run("already satisfied vector", func(t *testing.T) {
+			err := cli.WaitForStoreVersion(ctx, version)
+			require.NoError(t, err)
+		})
+
+		t.Run("empty vector", func(t *testing.T) {
+			err := cli.WaitForStoreVersion(ctx, nil)
+			require.NoError(t, err)
+		})
+
+		t.Run("zero version for unknown actor", func(t *testing.T) {
+			err := cli.WaitForStoreVersion(ctx, map[string]uint64{uuid.NewString(): 0})
+			require.NoError(t, err)
+		})
+
+		t.Run("invalid actor UUID", func(t *testing.T) {
+			err := cli.WaitForStoreVersion(ctx, map[string]uint64{"not-a-uuid": 1})
+			require.Equal(t, codes.InvalidArgument, status.Code(err))
+		})
+
+		t.Run("unknown actor times out", func(t *testing.T) {
+			waitCtx, cancel := context.WithTimeout(ctx, 500*time.Millisecond)
+			defer cancel()
+
+			// Background writes cannot satisfy a target for an actor that does not exist.
+			err := cli.WaitForStoreVersion(waitCtx, map[string]uint64{uuid.NewString(): 1})
+			require.Equal(t, codes.DeadlineExceeded, status.Code(err))
+		})
+
+		t.Run("partially satisfied vector times out", func(t *testing.T) {
+			waitCtx, cancel := context.WithTimeout(ctx, 500*time.Millisecond)
+			defer cancel()
+
+			minVersion := maps.Clone(version)
+			minVersion[uuid.NewString()] = 1
+			err := cli.WaitForStoreVersion(waitCtx, minVersion)
+			require.Equal(t, codes.DeadlineExceeded, status.Code(err))
+		})
+
+		t.Run("cancel pending wait", func(t *testing.T) {
+			waitCtx, cancel := context.WithCancel(ctx)
+			defer cancel()
+			timer := time.AfterFunc(500*time.Millisecond, cancel)
+			defer timer.Stop()
+
+			err := cli.WaitForStoreVersion(waitCtx, map[string]uint64{uuid.NewString(): 1})
+			require.Equal(t, codes.Canceled, status.Code(err))
+		})
+	})
+
 	t.Run("remove", func(t *testing.T) {
 		err := p.RemoveCluster(ctx, name)
 		require.NoError(t, err)

test/e2e/machine_test.go

@@ -7,7 +7,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/ucind"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/stretchr/testify/assert"

test/e2e/service_test.go

@@ -17,7 +17,7 @@ import (
 	"github.com/docker/docker/api/types/mount"
 	"github.com/docker/docker/api/types/volume"
 	"github.com/docker/go-units"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/metrics"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/psviderski/uncloud/internal/secret"