144 lines
3.8 KiB
Go
144 lines
3.8 KiB
Go
package api
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import (
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"context"
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"errors"
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"fmt"
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"io/fs"
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"net/http"
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"path/filepath"
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"strings"
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"time"
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)
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type storageCategory struct {
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ID string `json:"id"`
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Size int64 `json:"size"`
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}
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type storageUsage struct {
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TotalSize int64 `json:"totalSize"`
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Categories []storageCategory `json:"categories"`
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AssetsSize int64 `json:"assetsSize"`
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TrashSize int64 `json:"trashSize"`
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BuiltinFontsSize int64 `json:"builtinFontsSize"`
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CustomFontsSize int64 `json:"customFontsSize"`
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CalculatedAt int64 `json:"calculatedAt"`
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}
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func (s *Server) getStorage(w http.ResponseWriter, r *http.Request) {
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usage, err := scanStorage(r.Context(), s.DataDir, s.vault.Root())
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if err != nil {
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internalError(w, r, err)
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return
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}
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usage.BuiltinFontsSize = s.BuiltinFontsSize
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usage.CustomFontsSize = usage.Categories[2].Size
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usage.Categories[2].Size += s.BuiltinFontsSize
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usage.TotalSize += s.BuiltinFontsSize
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writeJSON(w, http.StatusOK, usage)
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}
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// 只统计普通文件逻辑字节，不跟随内部符号链接；外置仓库单独扫描。
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// 两个根互相嵌套时，各自由更具体的根负责，避免重复计算。
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func scanStorage(ctx context.Context, dataDir, vaultDir string) (storageUsage, error) {
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usage := storageUsage{Categories: []storageCategory{{ID: "vault"}, {ID: "databases"}, {ID: "fonts"}, {ID: "themes"}, {ID: "plugins"}, {ID: "other"}}}
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if dataDir == "" {
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return usage, fmt.Errorf("未配置应用数据目录")
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}
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dataRoot, err := filepath.EvalSymlinks(dataDir)
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if err != nil {
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return usage, err
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}
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dataRoot, err = filepath.Abs(dataRoot)
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if err != nil {
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return usage, err
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}
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vaultRoot, err := filepath.Abs(vaultDir)
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if err != nil {
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return usage, err
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}
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appCategory := func(rel string) int {
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top := strings.Split(filepath.ToSlash(rel), "/")[0]
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switch top {
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case "rawmark.db", "rawmark.db-wal", "rawmark.db-shm", "index.db", "index.db-wal", "index.db-shm":
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return 1
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case "fonts":
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return 2
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case "themes":
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return 3
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case "plugins":
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return 4
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default:
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return 5
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}
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}
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walk := func(root, skip string, isVault bool) error {
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return filepath.WalkDir(root, func(path string, entry fs.DirEntry, walkErr error) error {
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if err := ctx.Err(); err != nil {
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return err
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}
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if walkErr != nil {
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if path != root && errors.Is(walkErr, fs.ErrNotExist) {
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return nil // 文件可能在扫描期间被移动或删除。
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}
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return walkErr
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}
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if path != root && path == skip && entry.IsDir() {
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return filepath.SkipDir
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}
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if entry.IsDir() || entry.Type()&fs.ModeSymlink != 0 {
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return nil
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}
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info, err := entry.Info()
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if errors.Is(err, fs.ErrNotExist) {
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return nil
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}
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if err != nil {
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return err
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}
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if !info.Mode().IsRegular() {
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return nil
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}
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rel, err := filepath.Rel(root, path)
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if err != nil {
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return err
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}
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category := 0
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if !isVault || dataRoot == vaultRoot {
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category = appCategory(rel)
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if isVault && category == 5 {
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category = 0
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}
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}
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size := info.Size()
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usage.TotalSize += size
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usage.Categories[category].Size += size
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if category == 0 {
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parts := strings.Split(filepath.ToSlash(rel), "/")
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if len(parts) >= 3 && parts[0] == ".rawmark" && parts[1] == "trash" {
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usage.TrashSize += size
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} else {
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for _, part := range parts[:len(parts)-1] {
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if part == "assets" || strings.HasSuffix(part, ".assets") {
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usage.AssetsSize += size
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break
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}
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}
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}
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}
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return nil
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})
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}
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if dataRoot != vaultRoot {
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if err := walk(dataRoot, vaultRoot, false); err != nil {
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return storageUsage{}, err
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}
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}
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if err := walk(vaultRoot, dataRoot, true); err != nil {
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return storageUsage{}, err
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}
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usage.CalculatedAt = time.Now().UnixMilli()
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return usage, nil
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}
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