package mount import ( "github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/util" "golang.org/x/exp/slices" "io" "sync" ) type FileHandleId uint64 type FileHandle struct { fh FileHandleId counter int64 entry *filer_pb.Entry entryLock sync.Mutex inode uint64 wfs *WFS // cache file has been written to dirtyMetadata bool dirtyPages *PageWriter entryViewCache []filer.VisibleInterval reader io.ReaderAt contentType string handle uint64 sync.Mutex isDeleted bool } func newFileHandle(wfs *WFS, handleId FileHandleId, inode uint64, entry *filer_pb.Entry) *FileHandle { fh := &FileHandle{ fh: handleId, counter: 1, inode: inode, wfs: wfs, } // dirtyPages: newContinuousDirtyPages(file, writeOnly), fh.dirtyPages = newPageWriter(fh, wfs.option.ChunkSizeLimit) if entry != nil { entry.Attributes.FileSize = filer.FileSize(entry) } return fh } func (fh *FileHandle) FullPath() util.FullPath { fp, _ := fh.wfs.inodeToPath.GetPath(fh.inode) return fp } func (fh *FileHandle) GetEntry() *filer_pb.Entry { fh.entryLock.Lock() defer fh.entryLock.Unlock() return fh.entry } func (fh *FileHandle) SetEntry(entry *filer_pb.Entry) { fh.entryLock.Lock() defer fh.entryLock.Unlock() fh.entry = entry } func (fh *FileHandle) AddChunks(chunks []*filer_pb.FileChunk) { fh.entryLock.Lock() defer fh.entryLock.Unlock() // find the earliest incoming chunk newChunks := chunks earliestChunk := newChunks[0] for i := 1; i < len(newChunks); i++ { if lessThan(earliestChunk, newChunks[i]) { earliestChunk = newChunks[i] } } if fh.entry == nil { return } // pick out-of-order chunks from existing chunks for _, chunk := range fh.entry.Chunks { if lessThan(earliestChunk, chunk) { chunks = append(chunks, chunk) } } // sort incoming chunks slices.SortFunc(chunks, func(a, b *filer_pb.FileChunk) bool { return lessThan(a, b) }) glog.V(4).Infof("%s existing %d chunks adds %d more", fh.FullPath(), len(fh.entry.Chunks), len(chunks)) fh.entry.Chunks = append(fh.entry.Chunks, newChunks...) fh.entryViewCache = nil } func (fh *FileHandle) Release() { fh.dirtyPages.Destroy() } func lessThan(a, b *filer_pb.FileChunk) bool { if a.Mtime == b.Mtime { return a.Fid.FileKey < b.Fid.FileKey } return a.Mtime < b.Mtime }