package filer2 import ( "context" "fmt" "os" "path/filepath" "strings" "time" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/operation" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/wdclient" "github.com/karlseguin/ccache" "math" ) type Filer struct { store FilerStore directoryCache *ccache.Cache MasterClient *wdclient.MasterClient } func NewFiler(masters []string) *Filer { return &Filer{ directoryCache: ccache.New(ccache.Configure().MaxSize(1000).ItemsToPrune(100)), MasterClient: wdclient.NewMasterClient(context.Background(), "filer", masters), } } func (f *Filer) SetStore(store FilerStore) { f.store = store } func (f *Filer) DisableDirectoryCache() { f.directoryCache = nil } func (fs *Filer) GetMaster() string { return fs.MasterClient.GetMaster() } func (fs *Filer) KeepConnectedToMaster() { fs.MasterClient.KeepConnectedToMaster() } func (f *Filer) CreateEntry(entry *Entry) error { dirParts := strings.Split(string(entry.FullPath), "/") // fmt.Printf("directory parts: %+v\n", dirParts) var lastDirectoryEntry *Entry for i := 1; i < len(dirParts); i++ { dirPath := "/" + filepath.Join(dirParts[:i]...) // fmt.Printf("%d directory: %+v\n", i, dirPath) // first check local cache dirEntry := f.cacheGetDirectory(dirPath) // not found, check the store directly if dirEntry == nil { glog.V(4).Infof("find uncached directory: %s", dirPath) dirEntry, _ = f.FindEntry(FullPath(dirPath)) } else { glog.V(4).Infof("found cached directory: %s", dirPath) } // no such existing directory if dirEntry == nil { // create the directory now := time.Now() dirEntry = &Entry{ FullPath: FullPath(dirPath), Attr: Attr{ Mtime: now, Crtime: now, Mode: os.ModeDir | 0770, Uid: entry.Uid, Gid: entry.Gid, }, } glog.V(2).Infof("create directory: %s %v", dirPath, dirEntry.Mode) mkdirErr := f.store.InsertEntry(dirEntry) if mkdirErr != nil { return fmt.Errorf("mkdir %s: %v", dirPath, mkdirErr) } f.NotifyUpdateEvent(nil, dirEntry, false) } else if !dirEntry.IsDirectory() { return fmt.Errorf("%s is a file", dirPath) } // cache the directory entry f.cacheSetDirectory(dirPath, dirEntry, i) // remember the direct parent directory entry if i == len(dirParts)-1 { lastDirectoryEntry = dirEntry } } if lastDirectoryEntry == nil { return fmt.Errorf("parent folder not found: %v", entry.FullPath) } /* if !hasWritePermission(lastDirectoryEntry, entry) { glog.V(0).Infof("directory %s: %v, entry: uid=%d gid=%d", lastDirectoryEntry.FullPath, lastDirectoryEntry.Attr, entry.Uid, entry.Gid) return fmt.Errorf("no write permission in folder %v", lastDirectoryEntry.FullPath) } */ oldEntry, _ := f.FindEntry(entry.FullPath) if oldEntry == nil { if err := f.store.InsertEntry(entry); err != nil { return fmt.Errorf("insert entry %s: %v", entry.FullPath, err) } } else { if err := f.store.UpdateEntry(entry); err != nil { return fmt.Errorf("update entry %s: %v", entry.FullPath, err) } } f.NotifyUpdateEvent(oldEntry, entry, true) f.deleteChunksIfNotNew(oldEntry, entry) return nil } func (f *Filer) UpdateEntry(entry *Entry) (err error) { return f.store.UpdateEntry(entry) } func (f *Filer) FindEntry(p FullPath) (entry *Entry, err error) { return f.store.FindEntry(p) } func (f *Filer) DeleteEntryMetaAndData(p FullPath, isRecursive bool, shouldDeleteChunks bool) (err error) { entry, err := f.FindEntry(p) if err != nil { return err } if entry.IsDirectory() { limit := int(1) if isRecursive { limit = math.MaxInt32 } entries, err := f.ListDirectoryEntries(p, "", false, limit) if err != nil { return fmt.Errorf("list folder %s: %v", p, err) } if isRecursive { for _, sub := range entries { f.DeleteEntryMetaAndData(sub.FullPath, isRecursive, shouldDeleteChunks) } } else { if len(entries) > 0 { return fmt.Errorf("folder %s is not empty", p) } } f.cacheDelDirectory(string(p)) } if shouldDeleteChunks { f.deleteChunks(entry.Chunks) } if p == "/" { return nil } glog.V(3).Infof("deleting entry %v", p) f.NotifyUpdateEvent(entry, nil, shouldDeleteChunks) return f.store.DeleteEntry(p) } func (f *Filer) ListDirectoryEntries(p FullPath, startFileName string, inclusive bool, limit int) ([]*Entry, error) { if strings.HasSuffix(string(p), "/") && len(p) > 1 { p = p[0 : len(p)-1] } return f.store.ListDirectoryEntries(p, startFileName, inclusive, limit) } func (f *Filer) cacheDelDirectory(dirpath string) { if f.directoryCache == nil { return } f.directoryCache.Delete(dirpath) return } func (f *Filer) cacheGetDirectory(dirpath string) *Entry { if f.directoryCache == nil { return nil } item := f.directoryCache.Get(dirpath) if item == nil { return nil } return item.Value().(*Entry) } func (f *Filer) cacheSetDirectory(dirpath string, dirEntry *Entry, level int) { if f.directoryCache == nil { return } minutes := 60 if level < 10 { minutes -= level * 6 } f.directoryCache.Set(dirpath, dirEntry, time.Duration(minutes)*time.Minute) } func (f *Filer) deleteChunks(chunks []*filer_pb.FileChunk) { for _, chunk := range chunks { f.DeleteFileByFileId(chunk.FileId) } } func (f *Filer) DeleteFileByFileId(fileId string) { fileUrlOnVolume, err := f.MasterClient.LookupFileId(fileId) if err != nil { glog.V(0).Infof("can not find file %s: %v", fileId, err) } if err := operation.DeleteFromVolumeServer(fileUrlOnVolume, ""); err != nil { glog.V(0).Infof("deleting file %s: %v", fileId, err) } } func (f *Filer) deleteChunksIfNotNew(oldEntry, newEntry *Entry) { if oldEntry == nil { return } if newEntry == nil { f.deleteChunks(oldEntry.Chunks) } var toDelete []*filer_pb.FileChunk for _, oldChunk := range oldEntry.Chunks { found := false for _, newChunk := range newEntry.Chunks { if oldChunk.FileId == newChunk.FileId { found = true break } } if !found { toDelete = append(toDelete, oldChunk) } } f.deleteChunks(toDelete) }