fix(thumb - speedup): Consistent with author's request changes

pkg/filesystem/image.go

@@ -16,7 +16,7 @@ import (
 	"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/response"
 	"github.com/cloudreve/Cloudreve/v3/pkg/thumb"
 	"github.com/cloudreve/Cloudreve/v3/pkg/util"
-)
+	)
 
 /* ================
      图像处理相关
@@ -117,41 +117,35 @@ func (fs *FileSystem) generateThumbnail(ctx context.Context, file *model.File) e
 	defer cancel()
 	// TODO: check file size
 
-	getThumbWorker().addWorker()
-	defer getThumbWorker().releaseWorker()
-
-	// 获取文件数据
-	source, err := fs.Handler.Get(newCtx, file.SourceName)
-	if err != nil {
-		return fmt.Errorf("faield to fetch original file %q: %w", file.SourceName, err)
-	}
-	defer source.Close()
-
 	// Provide file source path for local policy files
-	src := ""
+	var err error
+	url, src := "", ""
 	if conf.SystemConfig.Mode == "slave" || file.GetPolicy().Type == "local" {
 		src = file.SourceName
 	} else {
-		ffmpegFormats := strings.Split(model.GetSettingByName("thumb_ffmpeg_exts"), ",")
+		url, err = fs.Handler.Source(ctx, file.SourceName, 300, false, 0)
-		vipsFormats := strings.Split(model.GetSettingByName("thumb_vips_exts"), ",")
-		// 如果文件格式支持 ffmpeg 或 vips 生成缩略图，则使用源文件链接
-		if (util.IsInExtensionList(ffmpegFormats, file.Name) &&
-			model.IsTrueVal(model.GetSettingByName("thumb_ffmpeg_enabled"))) ||
-			(util.IsInExtensionList(vipsFormats, file.Name) &&
-				model.IsTrueVal(model.GetSettingByName("thumb_vips_enabled"))) {
-			src, err = fs.Handler.Source(ctx, file.SourceName, 300, false, 0)
 		if err != nil {
-				util.Log().Warning("failed to get source url, fallback to source download method: %w", err)
+			util.Log().Warning("failed to get slave file download url: %w", err)
-			}
 		}
 	}
 
-	if src == "" && file.Size > uint64(model.GetIntSetting("thumb_max_src_size", 31457280)) {
+	// Only check max size for file that will touch local fs
+	if url == "" && file.Size > uint64(model.GetIntSetting("thumb_max_src_size", 31457280)) {
 		_ = updateThumbStatus(file, model.ThumbStatusNotAvailable)
 		return errors.New("file too large")
 	}
 
-	thumbRes, err := thumb.Generators.Generate(ctx, source, src, file.Name, model.GetSettingByNames(
+	getThumbWorker().addWorker()
+	defer getThumbWorker().releaseWorker()
+
+	// 获取文件数据
+	source, err := fs.Handler.Get(newCtx, file.SourceName)
+	if err != nil {
+		return fmt.Errorf("failed to fetch original file %q: %w", file.SourceName, err)
+	}
+	defer source.Close()
+
+	thumbRes, err := thumb.Generators.Generate(ctx, source, src, url, file, model.GetSettingByNames(
 		"thumb_width",
 		"thumb_height",
 		"thumb_builtin_enabled",

pkg/thumb/builtin.go

@@ -157,7 +157,7 @@ func (image *Thumb) CreateAvatar(uid uint) error {
 
 type Builtin struct{}
 
-func (b Builtin) Generate(ctx context.Context, file io.Reader, src, name string, options map[string]string) (*Result, error) {
+func (b Builtin) Generate(ctx context.Context, file io.Reader, src, url, name string, options map[string]string) (*Result, error) {
 	img, err := NewThumbFromFile(file, name)
 	if err != nil {
 		return nil, err

pkg/thumb/ffmpeg.go

@@ -23,7 +23,7 @@ type FfmpegGenerator struct {
 	lastRawExts string
 }
 
-func (f *FfmpegGenerator) Generate(ctx context.Context, file io.Reader, src, name string, options map[string]string) (*Result, error) {
+func (f *FfmpegGenerator) Generate(ctx context.Context, file io.Reader, src, url, name string, options map[string]string) (*Result, error) {
 	ffmpegOpts := model.GetSettingByNames("thumb_ffmpeg_path", "thumb_ffmpeg_exts", "thumb_ffmpeg_seek", "thumb_encode_method", "temp_path")
 
 	if f.lastRawExts != ffmpegOpts["thumb_ffmpeg_exts"] {
@@ -41,6 +41,9 @@ func (f *FfmpegGenerator) Generate(ctx context.Context, file io.Reader, src, nam
 	)
 
 	tempInputPath := src
+	if url != "" {
+		tempInputPath = url
+	}
 	if tempInputPath == "" {
 		// If not local policy files, download to temp folder
 		tempInputPath = filepath.Join(

pkg/thumb/libreoffice.go

@@ -23,7 +23,7 @@ type LibreOfficeGenerator struct {
 	lastRawExts string
 }
 
-func (l *LibreOfficeGenerator) Generate(ctx context.Context, file io.Reader, src string, name string, options map[string]string) (*Result, error) {
+func (l *LibreOfficeGenerator) Generate(ctx context.Context, file io.Reader, src, url, name string, options map[string]string) (*Result, error) {
 	sofficeOpts := model.GetSettingByNames("thumb_libreoffice_path", "thumb_libreoffice_exts", "thumb_encode_method", "temp_path")
 
 	if l.lastRawExts != sofficeOpts["thumb_libreoffice_exts"] {

pkg/thumb/pipeline.go

@@ -18,7 +18,7 @@ import (
 type Generator interface {
 	// Generate generates a thumbnail for a given reader. Src is the original file path, only provided
 	// for local policy files.
-	Generate(ctx context.Context, file io.Reader, src string, name string, options map[string]string) (*Result, error)
+	Generate(ctx context.Context, file io.Reader, src, url, name string, options map[string]string) (*Result, error)
 
 	// Priority of execution order, smaller value means higher priority.
 	Priority() int
@@ -63,18 +63,24 @@ func RegisterGenerator(generator Generator) {
 	sort.Sort(Generators)
 }
 
-func (p GeneratorList) Generate(ctx context.Context, file io.Reader, src, name string, options map[string]string) (*Result, error) {
+func (p GeneratorList) Generate(ctx context.Context, fileReader io.Reader, src, url string, file *model.File, options map[string]string) (*Result, error) {
-	inputFile, inputSrc, inputName := file, src, name
+	inputFile, inputSrc, inputUrl, inputName := fileReader, src, url, file.Name
 	for _, generator := range p {
 		if model.IsTrueVal(options[generator.EnableFlag()]) {
-			res, err := generator.Generate(ctx, inputFile, inputSrc, inputName, options)
+			if generator.EnableFlag() == "thumb_ffmpeg_enabled" &&
+				file.Size > uint64(model.GetIntSetting("thumb_max_src_size", 31457280)) {
+				util.Log().Debug("Generator %s failed to generate thumbnail for %s since file too large, passing through to next generator.", reflect.TypeOf(generator).String(), inputName)
+				continue
+			}
+
+			res, err := generator.Generate(ctx, inputFile, inputSrc, inputUrl, inputName, options)
 			if errors.Is(err, ErrPassThrough) {
-				util.Log().Debug("Failed to generate thumbnail using %s for %s: %s, passing through to next generator.", reflect.TypeOf(generator).String(), name, err)
+				util.Log().Debug("Failed to generate thumbnail using %s for %s: %s, passing through to next generator.", reflect.TypeOf(generator).String(), inputName, err)
 				continue
 			}
 
 			if res != nil && res.Continue {
-				util.Log().Debug("Generator %s for %s returned continue, passing through to next generator.", reflect.TypeOf(generator).String(), name)
+				util.Log().Debug("Generator %s for %s returned continue, passing through to next generator.", reflect.TypeOf(generator).String(), inputName)
 
 				// defer cleanup funcs
 				for _, cleanup := range res.Cleanup {

pkg/thumb/vips.go

@@ -22,7 +22,7 @@ type VipsGenerator struct {
 	lastRawExts string
 }
 
-func (v *VipsGenerator) Generate(ctx context.Context, file io.Reader, src, name string, options map[string]string) (*Result, error) {
+func (v *VipsGenerator) Generate(ctx context.Context, file io.Reader, src, url, name string, options map[string]string) (*Result, error) {
 	vipsOpts := model.GetSettingByNames("thumb_vips_path", "thumb_vips_exts", "thumb_encode_quality", "thumb_encode_method", "temp_path")
 
 	if v.lastRawExts != vipsOpts["thumb_vips_exts"] {