添加图片预览接口

api/files/files.pb.go

@@ -1309,6 +1309,116 @@ func (x *FileInfoResp) GetType() string {
 	return ""
 }
 
+type PreviewReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Path          string `protobuf:"bytes,1,opt,name=path,proto3" json:"path,omitempty"`
+	UserSpacePath string `protobuf:"bytes,2,opt,name=userSpacePath,proto3" json:"userSpacePath,omitempty"`
+	Size          uint32 `protobuf:"varint,3,opt,name=size,proto3" json:"size,omitempty"` // 预览大小 0：256x256, 1:1080x1080
+}
+
+func (x *PreviewReq) Reset() {
+	*x = PreviewReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_files_proto_msgTypes[20]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PreviewReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PreviewReq) ProtoMessage() {}
+
+func (x *PreviewReq) ProtoReflect() protoreflect.Message {
+	mi := &file_files_proto_msgTypes[20]
+	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 PreviewReq.ProtoReflect.Descriptor instead.
+func (*PreviewReq) Descriptor() ([]byte, []int) {
+	return file_files_proto_rawDescGZIP(), []int{20}
+}
+
+func (x *PreviewReq) GetPath() string {
+	if x != nil {
+		return x.Path
+	}
+	return ""
+}
+
+func (x *PreviewReq) GetUserSpacePath() string {
+	if x != nil {
+		return x.UserSpacePath
+	}
+	return ""
+}
+
+func (x *PreviewReq) GetSize() uint32 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
+type PreviewResp struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Content []byte `protobuf:"bytes,1,opt,name=content,proto3" json:"content,omitempty"`
+}
+
+func (x *PreviewResp) Reset() {
+	*x = PreviewResp{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_files_proto_msgTypes[21]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PreviewResp) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PreviewResp) ProtoMessage() {}
+
+func (x *PreviewResp) ProtoReflect() protoreflect.Message {
+	mi := &file_files_proto_msgTypes[21]
+	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 PreviewResp.ProtoReflect.Descriptor instead.
+func (*PreviewResp) Descriptor() ([]byte, []int) {
+	return file_files_proto_rawDescGZIP(), []int{21}
+}
+
+func (x *PreviewResp) GetContent() []byte {
+	if x != nil {
+		return x.Content
+	}
+	return nil
+}
+
 type SearchResp_Nested struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1321,7 +1431,7 @@ type SearchResp_Nested struct {
 func (x *SearchResp_Nested) Reset() {
 	*x = SearchResp_Nested{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_files_proto_msgTypes[20]
+		mi := &file_files_proto_msgTypes[22]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1334,7 +1444,7 @@ func (x *SearchResp_Nested) String() string {
 func (*SearchResp_Nested) ProtoMessage() {}
 
 func (x *SearchResp_Nested) ProtoReflect() protoreflect.Message {
-	mi := &file_files_proto_msgTypes[20]
+	mi := &file_files_proto_msgTypes[22]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1498,40 +1608,51 @@ var file_files_proto_rawDesc = []byte{
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 }
 
 var (
@@ -1546,7 +1667,7 @@ func file_files_proto_rawDescGZIP() []byte {
 	return file_files_proto_rawDescData
 }
 
-var file_files_proto_msgTypes = make([]protoimpl.MessageInfo, 21)
+var file_files_proto_msgTypes = make([]protoimpl.MessageInfo, 23)
 var file_files_proto_goTypes = []interface{}{
 	(*FileListReq)(nil),           // 0: files.FileListReq
 	(*Items)(nil),                 // 1: files.Items
@@ -1568,13 +1689,15 @@ var file_files_proto_goTypes = []interface{}{
 	(*ResumableTransferResp)(nil), // 17: files.ResumableTransferResp
 	(*FileInfoReq)(nil),           // 18: files.FileInfoReq
 	(*FileInfoResp)(nil),          // 19: files.FileInfoResp
-	(*SearchResp_Nested)(nil),     // 20: files.searchResp.Nested
+	(*PreviewReq)(nil),            // 20: files.PreviewReq
+	(*PreviewResp)(nil),           // 21: files.PreviewResp
+	(*SearchResp_Nested)(nil),     // 22: files.searchResp.Nested
 }
 var file_files_proto_depIdxs = []int32{
 	2,  // 0: files.FileListReq.sorting:type_name -> files.Sorting
 	1,  // 1: files.FileListResp.items:type_name -> files.Items
 	2,  // 2: files.FileListResp.sorting:type_name -> files.Sorting
-	20, // 3: files.searchResp.items:type_name -> files.searchResp.Nested
+	22, // 3: files.searchResp.items:type_name -> files.searchResp.Nested
 	0,  // 4: files.File.List:input_type -> files.FileListReq
 	18, // 5: files.File.Info:input_type -> files.FileInfoReq
 	4,  // 6: files.File.Create:input_type -> files.CreateReq
@@ -1584,17 +1707,19 @@ var file_files_proto_depIdxs = []int32{
 	12, // 10: files.File.TusCreate:input_type -> files.TusCreateReq
 	14, // 11: files.File.TusUpload:input_type -> files.TusUploadReq
 	16, // 12: files.File.ResumableTransfer:input_type -> files.ResumableTransferReq
-	3,  // 13: files.File.List:output_type -> files.FileListResp
+	20, // 13: files.File.Preview:input_type -> files.PreviewReq
-	19, // 14: files.File.Info:output_type -> files.FileInfoResp
+	3,  // 14: files.File.List:output_type -> files.FileListResp
-	5,  // 15: files.File.Create:output_type -> files.CreateResp
+	19, // 15: files.File.Info:output_type -> files.FileInfoResp
-	7,  // 16: files.File.Delete:output_type -> files.DeleteResp
+	5,  // 16: files.File.Create:output_type -> files.CreateResp
-	11, // 17: files.File.Search:output_type -> files.searchResp
+	7,  // 17: files.File.Delete:output_type -> files.DeleteResp
-	9,  // 18: files.File.Upload:output_type -> files.UploadResp
+	11, // 18: files.File.Search:output_type -> files.searchResp
-	13, // 19: files.File.TusCreate:output_type -> files.TusCreateResp
+	9,  // 19: files.File.Upload:output_type -> files.UploadResp
-	15, // 20: files.File.TusUpload:output_type -> files.TusUploadResp
+	13, // 20: files.File.TusCreate:output_type -> files.TusCreateResp
-	17, // 21: files.File.ResumableTransfer:output_type -> files.ResumableTransferResp
+	15, // 21: files.File.TusUpload:output_type -> files.TusUploadResp
-	13, // [13:22] is the sub-list for method output_type
+	17, // 22: files.File.ResumableTransfer:output_type -> files.ResumableTransferResp
-	4,  // [4:13] is the sub-list for method input_type
+	21, // 23: files.File.Preview:output_type -> files.PreviewResp
+	14, // [14:24] is the sub-list for method output_type
+	4,  // [4:14] is the sub-list for method input_type
 	4,  // [4:4] is the sub-list for extension type_name
 	4,  // [4:4] is the sub-list for extension extendee
 	0,  // [0:4] is the sub-list for field type_name
@@ -1847,6 +1972,30 @@ func file_files_proto_init() {
 			}
 		}
 		file_files_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PreviewReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_files_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PreviewResp); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_files_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SearchResp_Nested); i {
 			case 0:
 				return &v.state
@@ -1865,7 +2014,7 @@ func file_files_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_files_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   21,
+			NumMessages:   23,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

api/files/files.proto

@@ -14,6 +14,7 @@ service File{
     rpc TusCreate(TusCreateReq) returns(TusCreateResp) {} // 分块文件上传：创建文件
     rpc TusUpload(TusUploadReq) returns(TusUploadResp) {} // 分块文件上传：上传文件块
     rpc ResumableTransfer(ResumableTransferReq) returns(ResumableTransferResp) {} // 断点续传的grpc实现
+    rpc Preview(PreviewReq) returns(PreviewResp) {} // 文件预览
 } 
 
 message FileListReq{
@@ -150,4 +151,14 @@ message FileInfoResp{
     bool isDir = 7;
     bool isSymlink = 8;
     string type = 9;
+}
+
+message PreviewReq{
+    string path = 1;
+    string userSpacePath = 2;
+    uint32 size = 3; // 预览大小 0：256x256, 1:1080x1080
+}
+
+message PreviewResp{
+    bytes content = 1;
 }

api/files/files.validator.pb.go

@@ -102,3 +102,9 @@ func (this *FileInfoReq) Validate() error {
 func (this *FileInfoResp) Validate() error {
 	return nil
 }
+func (this *PreviewReq) Validate() error {
+	return nil
+}
+func (this *PreviewResp) Validate() error {
+	return nil
+}

api/files/files_triple.pb.go

@@ -37,6 +37,7 @@ type FileClient interface {
 	TusCreate(ctx context.Context, in *TusCreateReq, opts ...grpc_go.CallOption) (*TusCreateResp, common.ErrorWithAttachment)
 	TusUpload(ctx context.Context, in *TusUploadReq, opts ...grpc_go.CallOption) (*TusUploadResp, common.ErrorWithAttachment)
 	ResumableTransfer(ctx context.Context, in *ResumableTransferReq, opts ...grpc_go.CallOption) (*ResumableTransferResp, common.ErrorWithAttachment)
+	Preview(ctx context.Context, in *PreviewReq, opts ...grpc_go.CallOption) (*PreviewResp, common.ErrorWithAttachment)
 }
 
 type fileClient struct {
@@ -53,6 +54,7 @@ type FileClientImpl struct {
 	TusCreate         func(ctx context.Context, in *TusCreateReq) (*TusCreateResp, error)
 	TusUpload         func(ctx context.Context, in *TusUploadReq) (*TusUploadResp, error)
 	ResumableTransfer func(ctx context.Context, in *ResumableTransferReq) (*ResumableTransferResp, error)
+	Preview           func(ctx context.Context, in *PreviewReq) (*PreviewResp, error)
 }
 
 func (c *FileClientImpl) GetDubboStub(cc *triple.TripleConn) FileClient {
@@ -121,6 +123,12 @@ func (c *fileClient) ResumableTransfer(ctx context.Context, in *ResumableTransfe
 	return out, c.cc.Invoke(ctx, "/"+interfaceKey+"/ResumableTransfer", in, out)
 }
 
+func (c *fileClient) Preview(ctx context.Context, in *PreviewReq, opts ...grpc_go.CallOption) (*PreviewResp, common.ErrorWithAttachment) {
+	out := new(PreviewResp)
+	interfaceKey := ctx.Value(constant.InterfaceKey).(string)
+	return out, c.cc.Invoke(ctx, "/"+interfaceKey+"/Preview", in, out)
+}
+
 // FileServer is the server API for File service.
 // All implementations must embed UnimplementedFileServer
 // for forward compatibility
@@ -134,6 +142,7 @@ type FileServer interface {
 	TusCreate(context.Context, *TusCreateReq) (*TusCreateResp, error)
 	TusUpload(context.Context, *TusUploadReq) (*TusUploadResp, error)
 	ResumableTransfer(context.Context, *ResumableTransferReq) (*ResumableTransferResp, error)
+	Preview(context.Context, *PreviewReq) (*PreviewResp, error)
 	mustEmbedUnimplementedFileServer()
 }
 
@@ -169,6 +178,9 @@ func (UnimplementedFileServer) TusUpload(context.Context, *TusUploadReq) (*TusUp
 func (UnimplementedFileServer) ResumableTransfer(context.Context, *ResumableTransferReq) (*ResumableTransferResp, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ResumableTransfer not implemented")
 }
+func (UnimplementedFileServer) Preview(context.Context, *PreviewReq) (*PreviewResp, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Preview not implemented")
+}
 func (s *UnimplementedFileServer) XXX_SetProxyImpl(impl protocol.Invoker) {
 	s.proxyImpl = impl
 }
@@ -458,6 +470,35 @@ func _File_ResumableTransfer_Handler(srv interface{}, ctx context.Context, dec f
 	return interceptor(ctx, in, info, handler)
 }
 
+func _File_Preview_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc_go.UnaryServerInterceptor) (interface{}, error) {
+	in := new(PreviewReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	base := srv.(dubbo3.Dubbo3GrpcService)
+	args := []interface{}{}
+	args = append(args, in)
+	md, _ := metadata.FromIncomingContext(ctx)
+	invAttachment := make(map[string]interface{}, len(md))
+	for k, v := range md {
+		invAttachment[k] = v
+	}
+	invo := invocation.NewRPCInvocation("Preview", args, invAttachment)
+	if interceptor == nil {
+		result := base.XXX_GetProxyImpl().Invoke(ctx, invo)
+		return result, result.Error()
+	}
+	info := &grpc_go.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: ctx.Value("XXX_TRIPLE_GO_INTERFACE_NAME").(string),
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		result := base.XXX_GetProxyImpl().Invoke(ctx, invo)
+		return result, result.Error()
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // File_ServiceDesc is the grpc_go.ServiceDesc for File service.
 // It's only intended for direct use with grpc_go.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -501,6 +542,10 @@ var File_ServiceDesc = grpc_go.ServiceDesc{
 			MethodName: "ResumableTransfer",
 			Handler:    _File_ResumableTransfer_Handler,
 		},
+		{
+			MethodName: "Preview",
+			Handler:    _File_Preview_Handler,
+		},
 	},
 	Streams:  []grpc_go.StreamDesc{},
 	Metadata: "files.proto",

service/files.go

@@ -13,6 +13,8 @@ import (
 	"dubbo.apache.org/dubbo-go/v3/common/logger"
 	filesApi "github.com/filebrowser/filebrowser/v2/api/files"
 	"github.com/filebrowser/filebrowser/v2/files"
+	"github.com/filebrowser/filebrowser/v2/http"
+	"github.com/filebrowser/filebrowser/v2/img"
 	"github.com/filebrowser/filebrowser/v2/rules"
 	"github.com/filebrowser/filebrowser/v2/search"
 	"github.com/spf13/afero"
@@ -24,6 +26,8 @@ type FilesProvider struct {
 
 const BASE_PATH = "../"
 
+var imgSvc = img.New(4) // 图片预览可用协程数
+
 func (f *FilesProvider) List(ctx context.Context, req *filesApi.FileListReq) (*filesApi.FileListResp, error) {
 	file, err := files.NewFileInfo(&files.FileOptions{
 		Fs:         getFs(req.UserSpacePath),
@@ -277,6 +281,69 @@ func (f *FilesProvider) ResumableTransfer(ctx context.Context, req *filesApi.Res
 	}, nil
 }
 
+func (f *FilesProvider) Preview(ctx context.Context, req *filesApi.PreviewReq) (*filesApi.PreviewResp, error) {
+	fs := getFs(req.UserSpacePath)
+	file, err := files.NewFileInfo(&files.FileOptions{
+		Fs:         fs,
+		Path:       req.Path,
+		Modify:     true,
+		Expand:     true,
+		ReadHeader: true,
+		Checker:    rules.EmptyChecker,
+	})
+	if err != nil {
+		return nil, err
+	}
+	switch file.Type {
+	case "image":
+		{
+			b, err := f.createPreview(imgSvc, file, req.Size)
+			if err != nil {
+				return nil, err
+			}
+			return &filesApi.PreviewResp{
+				Content: b,
+			}, nil
+
+		}
+	default:
+		return nil, fmt.Errorf("目前只支持image类型的预览")
+	}
+}
+
+func (f *FilesProvider) createPreview(imgSvc http.ImgService,
+	file *files.FileInfo, previewSize uint32) ([]byte, error) {
+	fd, err := file.Fs.Open(file.Path)
+	if err != nil {
+		return nil, err
+	}
+	defer fd.Close()
+
+	var (
+		width   int
+		height  int
+		options []img.Option
+	)
+
+	switch {
+	case previewSize == 1:
+		width = 1080
+		height = 1080
+		options = append(options, img.WithMode(img.ResizeModeFit), img.WithQuality(img.QualityMedium))
+	case previewSize == 0:
+		width = 256
+		height = 256
+		options = append(options, img.WithMode(img.ResizeModeFill), img.WithQuality(img.QualityLow), img.WithFormat(img.FormatJpeg))
+	default:
+		return nil, img.ErrUnsupportedFormat
+	}
+
+	buf := &bytes.Buffer{}
+	if err := imgSvc.Resize(context.Background(), fd, width, height, buf, options...); err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
 func getFs(UserSpacePath string) afero.Fs {
 	bashAbs, _ := filepath.Abs(BASE_PATH)
 	if !strings.HasPrefix(UserSpacePath, "/") {