d4566d4aaa
* compare chunks by timestamp * fix slab clearing error * fix test compilation * move oldest chunk to sealed, instead of by fullness * lock on fh.entryViewCache * remove verbose logs * revert slat clearing * less logs * less logs * track write and read by timestamp * remove useless logic * add entry lock on file handle release * use mem chunk only, swap file chunk has problems * comment out code that maybe used later * add debug mode to compare data read and write * more efficient readResolvedChunks with linked list * small optimization * fix test compilation * minor fix on writer * add SeparateGarbageChunks * group chunks into sections * turn off debug mode * fix tests * fix tests * tmp enable swap file chunk * Revert "tmp enable swap file chunk" This reverts commit 985137ec472924e4815f258189f6ca9f2168a0a7. * simple refactoring * simple refactoring * do not re-use swap file chunk. Sealed chunks should not be re-used. * comment out debugging facilities * either mem chunk or swap file chunk is fine now * remove orderedMutex as *semaphore.Weighted not found impactful * optimize size calculation for changing large files * optimize performance to avoid going through the long list of chunks * still problems with swap file chunk * rename * tiny optimization * swap file chunk save only successfully read data * fix * enable both mem and swap file chunk * resolve chunks with range * rename * fix chunk interval list * also change file handle chunk group when adding chunks * pick in-active chunk with time-decayed counter * fix compilation * avoid nil with empty fh.entry * refactoring * rename * rename * refactor visible intervals to *list.List * refactor chunkViews to *list.List * add IntervalList for generic interval list * change visible interval to use IntervalList in generics * cahnge chunkViews to *IntervalList[*ChunkView] * use NewFileChunkSection to create * rename variables * refactor * fix renaming leftover * renaming * renaming * add insert interval * interval list adds lock * incrementally add chunks to readers Fixes: 1. set start and stop offset for the value object 2. clone the value object 3. use pointer instead of copy-by-value when passing to interval.Value 4. use insert interval since adding chunk could be out of order * fix tests compilation * fix tests compilation
100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
package mount
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import (
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"context"
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"fmt"
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"io"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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)
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func (fh *FileHandle) lockForRead(startOffset int64, size int) {
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fh.dirtyPages.LockForRead(startOffset, startOffset+int64(size))
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}
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func (fh *FileHandle) unlockForRead(startOffset int64, size int) {
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fh.dirtyPages.UnlockForRead(startOffset, startOffset+int64(size))
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}
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func (fh *FileHandle) readFromDirtyPages(buff []byte, startOffset int64, tsNs int64) (maxStop int64) {
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maxStop = fh.dirtyPages.ReadDirtyDataAt(buff, startOffset, tsNs)
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return
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}
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func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, int64, error) {
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fh.entryLock.Lock()
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defer fh.entryLock.Unlock()
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fileFullPath := fh.FullPath()
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entry := fh.GetEntry()
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if entry == nil {
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return 0, 0, io.EOF
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}
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if entry.IsInRemoteOnly() {
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glog.V(4).Infof("download remote entry %s", fileFullPath)
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newEntry, err := fh.downloadRemoteEntry(entry)
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if err != nil {
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glog.V(1).Infof("download remote entry %s: %v", fileFullPath, err)
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return 0, 0, err
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}
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entry = newEntry
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}
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fileSize := int64(entry.Attributes.FileSize)
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if fileSize == 0 {
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fileSize = int64(filer.FileSize(entry))
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}
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if fileSize == 0 {
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glog.V(1).Infof("empty fh %v", fileFullPath)
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return 0, 0, io.EOF
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}
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if offset+int64(len(buff)) <= int64(len(entry.Content)) {
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totalRead := copy(buff, entry.Content[offset:])
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glog.V(4).Infof("file handle read cached %s [%d,%d] %d", fileFullPath, offset, offset+int64(totalRead), totalRead)
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return int64(totalRead), 0, nil
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}
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totalRead, ts, err := fh.entryChunkGroup.ReadDataAt(fileSize, buff, offset)
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if err != nil && err != io.EOF {
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glog.Errorf("file handle read %s: %v", fileFullPath, err)
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}
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// glog.V(4).Infof("file handle read %s [%d,%d] %d : %v", fileFullPath, offset, offset+int64(totalRead), totalRead, err)
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return int64(totalRead), ts, err
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}
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func (fh *FileHandle) downloadRemoteEntry(entry *filer_pb.Entry) (*filer_pb.Entry, error) {
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fileFullPath := fh.FullPath()
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dir, _ := fileFullPath.DirAndName()
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err := fh.wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.CacheRemoteObjectToLocalClusterRequest{
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Directory: string(dir),
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Name: entry.Name,
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}
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glog.V(4).Infof("download entry: %v", request)
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resp, err := client.CacheRemoteObjectToLocalCluster(context.Background(), request)
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if err != nil {
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return fmt.Errorf("CacheRemoteObjectToLocalCluster file %s: %v", fileFullPath, err)
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}
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entry = resp.Entry
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fh.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, resp.Entry))
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return nil
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})
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return entry, err
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}
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