mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
wait for reading threads to complete before dropping sealed chunks
This commit is contained in:
chrislu
parent
0a3f95ca01
commit
f4ad63528a
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@ -1,138 +0,0 @@
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package filesys
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import (
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"bytes"
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filesys/page_writer"
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"io"
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"sync"
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"time"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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)
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type ContinuousDirtyPages struct {
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intervals *page_writer.ContinuousIntervals
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f *File
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writeWaitGroup sync.WaitGroup
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chunkAddLock sync.Mutex
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lastErr error
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collection string
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replication string
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}
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func newContinuousDirtyPages(file *File) *ContinuousDirtyPages {
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dirtyPages := &ContinuousDirtyPages{
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intervals: &page_writer.ContinuousIntervals{},
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f: file,
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}
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return dirtyPages
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}
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func (pages *ContinuousDirtyPages) AddPage(offset int64, data []byte) {
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glog.V(4).Infof("%s AddPage [%d,%d)", pages.f.fullpath(), offset, offset+int64(len(data)))
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if len(data) > int(pages.f.wfs.option.ChunkSizeLimit) {
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// this is more than what buffer can hold.
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pages.flushAndSave(offset, data)
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}
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pages.intervals.AddInterval(data, offset)
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if pages.intervals.TotalSize() >= pages.f.wfs.option.ChunkSizeLimit {
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pages.saveExistingLargestPageToStorage()
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}
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return
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}
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func (pages *ContinuousDirtyPages) flushAndSave(offset int64, data []byte) {
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// flush existing
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pages.saveExistingPagesToStorage()
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// flush the new page
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pages.saveToStorage(bytes.NewReader(data), offset, int64(len(data)))
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return
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}
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func (pages *ContinuousDirtyPages) FlushData() error {
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pages.saveExistingPagesToStorage()
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pages.writeWaitGroup.Wait()
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if pages.lastErr != nil {
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return fmt.Errorf("flush data: %v", pages.lastErr)
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}
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return nil
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}
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func (pages *ContinuousDirtyPages) saveExistingPagesToStorage() {
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for pages.saveExistingLargestPageToStorage() {
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}
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}
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func (pages *ContinuousDirtyPages) saveExistingLargestPageToStorage() (hasSavedData bool) {
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maxList := pages.intervals.RemoveLargestIntervalLinkedList()
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if maxList == nil {
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return false
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}
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entry := pages.f.getEntry()
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if entry == nil {
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return false
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}
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fileSize := int64(entry.Attributes.FileSize)
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chunkSize := min(maxList.Size(), fileSize-maxList.Offset())
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if chunkSize == 0 {
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return false
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}
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pages.saveToStorage(maxList.ToReader(), maxList.Offset(), chunkSize)
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return true
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}
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func (pages *ContinuousDirtyPages) saveToStorage(reader io.Reader, offset int64, size int64) {
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mtime := time.Now().UnixNano()
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pages.writeWaitGroup.Add(1)
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writer := func() {
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defer pages.writeWaitGroup.Done()
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reader = io.LimitReader(reader, size)
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chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath())(reader, pages.f.Name, offset)
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if err != nil {
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glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.f.fullpath(), offset, offset+size, err)
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pages.lastErr = err
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return
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}
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chunk.Mtime = mtime
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pages.collection, pages.replication = collection, replication
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pages.chunkAddLock.Lock()
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defer pages.chunkAddLock.Unlock()
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pages.f.addChunks([]*filer_pb.FileChunk{chunk})
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glog.V(3).Infof("%s saveToStorage [%d,%d)", pages.f.fullpath(), offset, offset+size)
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}
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if pages.f.wfs.concurrentWriters != nil {
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pages.f.wfs.concurrentWriters.Execute(writer)
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} else {
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go writer()
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}
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}
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func (pages *ContinuousDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
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return pages.intervals.ReadDataAt(data, startOffset)
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}
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func (pages *ContinuousDirtyPages) GetStorageOptions() (collection, replication string) {
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return pages.collection, pages.replication
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}
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func (pages ContinuousDirtyPages) Destroy() {
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}
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@ -21,6 +21,10 @@ type MemoryChunkPages struct {
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hasWrites bool
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}
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var (
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_ = page_writer.DirtyPages(&MemoryChunkPages{})
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)
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func newMemoryChunkPages(fh *FileHandle, chunkSize int64) *MemoryChunkPages {
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dirtyPages := &MemoryChunkPages{
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@ -88,3 +92,10 @@ func (pages *MemoryChunkPages) saveChunkedFileIntevalToStorage(reader io.Reader,
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func (pages MemoryChunkPages) Destroy() {
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pages.uploadPipeline.Shutdown()
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}
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func (pages *MemoryChunkPages) LockForRead(startOffset, stopOffset int64) {
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pages.uploadPipeline.LockForRead(startOffset, stopOffset)
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}
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func (pages *MemoryChunkPages) UnlockForRead(startOffset, stopOffset int64) {
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pages.uploadPipeline.UnlockForRead(startOffset, stopOffset)
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}
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@ -1,106 +0,0 @@
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package filesys
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import (
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filesys/page_writer"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"io"
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"sync"
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"time"
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)
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type StreamDirtyPages struct {
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f *File
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writeWaitGroup sync.WaitGroup
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pageAddLock sync.Mutex
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chunkAddLock sync.Mutex
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lastErr error
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collection string
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replication string
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chunkedStream *page_writer.ChunkedStreamWriter
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}
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func newStreamDirtyPages(file *File, chunkSize int64) *StreamDirtyPages {
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dirtyPages := &StreamDirtyPages{
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f: file,
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chunkedStream: page_writer.NewChunkedStreamWriter(chunkSize),
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}
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dirtyPages.chunkedStream.SetSaveToStorageFunction(dirtyPages.saveChunkedFileIntevalToStorage)
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return dirtyPages
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}
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func (pages *StreamDirtyPages) AddPage(offset int64, data []byte) {
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pages.pageAddLock.Lock()
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defer pages.pageAddLock.Unlock()
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glog.V(4).Infof("%v stream AddPage [%d, %d)", pages.f.fullpath(), offset, offset+int64(len(data)))
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if _, err := pages.chunkedStream.WriteAt(data, offset); err != nil {
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pages.lastErr = err
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}
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return
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}
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func (pages *StreamDirtyPages) FlushData() error {
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pages.saveChunkedFileToStorage()
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pages.writeWaitGroup.Wait()
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if pages.lastErr != nil {
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return fmt.Errorf("flush data: %v", pages.lastErr)
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}
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pages.chunkedStream.Reset()
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return nil
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}
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func (pages *StreamDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
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return pages.chunkedStream.ReadDataAt(data, startOffset)
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}
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func (pages *StreamDirtyPages) GetStorageOptions() (collection, replication string) {
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return pages.collection, pages.replication
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}
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func (pages *StreamDirtyPages) saveChunkedFileToStorage() {
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pages.chunkedStream.FlushAll()
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}
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func (pages *StreamDirtyPages) saveChunkedFileIntevalToStorage(reader io.Reader, offset int64, size int64, cleanupFn func()) {
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mtime := time.Now().UnixNano()
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pages.writeWaitGroup.Add(1)
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writer := func() {
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defer pages.writeWaitGroup.Done()
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defer cleanupFn()
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chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath())(reader, pages.f.Name, offset)
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if err != nil {
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glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.f.fullpath(), offset, offset+size, err)
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pages.lastErr = err
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return
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}
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chunk.Mtime = mtime
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pages.collection, pages.replication = collection, replication
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pages.chunkAddLock.Lock()
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pages.f.addChunks([]*filer_pb.FileChunk{chunk})
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glog.V(3).Infof("%s saveToStorage %s [%d,%d)", pages.f.fullpath(), chunk.FileId, offset, offset+size)
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pages.chunkAddLock.Unlock()
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}
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if pages.f.wfs.concurrentWriters != nil {
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pages.f.wfs.concurrentWriters.Execute(writer)
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} else {
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go writer()
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}
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}
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func (pages StreamDirtyPages) Destroy() {
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pages.chunkedStream.Reset()
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}
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@ -1,106 +0,0 @@
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package filesys
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import (
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filesys/page_writer"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"io"
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"os"
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"sync"
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"time"
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)
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type TempFileDirtyPages struct {
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f *File
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writeWaitGroup sync.WaitGroup
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pageAddLock sync.Mutex
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chunkAddLock sync.Mutex
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lastErr error
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collection string
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replication string
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chunkedFile *page_writer.ChunkedFileWriter
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}
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func newTempFileDirtyPages(file *File, chunkSize int64) *TempFileDirtyPages {
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tempFile := &TempFileDirtyPages{
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f: file,
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chunkedFile: page_writer.NewChunkedFileWriter(file.wfs.option.getTempFilePageDir(), chunkSize),
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}
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return tempFile
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}
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func (pages *TempFileDirtyPages) AddPage(offset int64, data []byte) {
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pages.pageAddLock.Lock()
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defer pages.pageAddLock.Unlock()
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glog.V(4).Infof("%v tempfile AddPage [%d, %d)", pages.f.fullpath(), offset, offset+int64(len(data)))
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if _, err := pages.chunkedFile.WriteAt(data, offset); err != nil {
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pages.lastErr = err
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}
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return
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}
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func (pages *TempFileDirtyPages) FlushData() error {
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pages.saveChunkedFileToStorage()
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pages.writeWaitGroup.Wait()
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if pages.lastErr != nil {
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return fmt.Errorf("flush data: %v", pages.lastErr)
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}
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pages.chunkedFile.Reset()
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return nil
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}
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func (pages *TempFileDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
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return pages.chunkedFile.ReadDataAt(data, startOffset)
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}
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func (pages *TempFileDirtyPages) GetStorageOptions() (collection, replication string) {
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return pages.collection, pages.replication
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}
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func (pages *TempFileDirtyPages) saveChunkedFileToStorage() {
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pages.chunkedFile.ProcessEachInterval(func(file *os.File, logicChunkIndex page_writer.LogicChunkIndex, interval *page_writer.ChunkWrittenInterval) {
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reader := page_writer.NewFileIntervalReader(pages.chunkedFile, logicChunkIndex, interval)
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pages.saveChunkedFileIntevalToStorage(reader, int64(logicChunkIndex)*pages.chunkedFile.ChunkSize+interval.StartOffset, interval.Size())
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})
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}
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func (pages *TempFileDirtyPages) saveChunkedFileIntevalToStorage(reader io.Reader, offset int64, size int64) {
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mtime := time.Now().UnixNano()
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pages.writeWaitGroup.Add(1)
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writer := func() {
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defer pages.writeWaitGroup.Done()
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chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath())(reader, pages.f.Name, offset)
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if err != nil {
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glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.f.fullpath(), offset, offset+size, err)
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pages.lastErr = err
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return
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}
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chunk.Mtime = mtime
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pages.collection, pages.replication = collection, replication
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pages.chunkAddLock.Lock()
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defer pages.chunkAddLock.Unlock()
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pages.f.addChunks([]*filer_pb.FileChunk{chunk})
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glog.V(3).Infof("%s saveToStorage %s [%d,%d)", pages.f.fullpath(), chunk.FileId, offset, offset+size)
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}
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if pages.f.wfs.concurrentWriters != nil {
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pages.f.wfs.concurrentWriters.Execute(writer)
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} else {
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go writer()
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}
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}
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func (pages TempFileDirtyPages) Destroy() {
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pages.chunkedFile.Reset()
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}
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@ -75,6 +75,8 @@ func (fh *FileHandle) Read(ctx context.Context, req *fuse.ReadRequest, resp *fus
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buff = make([]byte, req.Size)
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}
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fh.lockForRead(req.Offset, len(buff))
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defer fh.unlockForRead(req.Offset, len(buff))
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totalRead, err := fh.readFromChunks(buff, req.Offset)
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if err == nil || err == io.EOF {
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maxStop := fh.readFromDirtyPages(buff, req.Offset)
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@ -101,6 +103,13 @@ func (fh *FileHandle) Read(ctx context.Context, req *fuse.ReadRequest, resp *fus
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return err
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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) (maxStop int64) {
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maxStop = fh.dirtyPages.ReadDirtyDataAt(buff, startOffset)
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return
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|
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@ -13,7 +13,6 @@ type PageWriter struct {
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writerPattern *WriterPattern
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randomWriter page_writer.DirtyPages
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streamWriter page_writer.DirtyPages
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}
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var (
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@ -44,22 +43,11 @@ func (pw *PageWriter) AddPage(offset int64, data []byte) {
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}
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func (pw *PageWriter) addToOneChunk(chunkIndex, offset int64, data []byte) {
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if chunkIndex > 0 {
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if pw.writerPattern.IsStreamingMode() && pw.streamWriter != nil {
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pw.streamWriter.AddPage(offset, data)
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return
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}
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}
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pw.randomWriter.AddPage(offset, data)
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}
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func (pw *PageWriter) FlushData() error {
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pw.writerPattern.Reset()
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if pw.streamWriter != nil {
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if err := pw.streamWriter.FlushData(); err != nil {
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return err
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}
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}
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return pw.randomWriter.FlushData()
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}
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@ -70,12 +58,7 @@ func (pw *PageWriter) ReadDirtyDataAt(data []byte, offset int64) (maxStop int64)
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for i := chunkIndex; len(data) > 0; i++ {
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readSize := min(int64(len(data)), (i+1)*pw.chunkSize-offset)
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if pw.streamWriter != nil {
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m1 := pw.streamWriter.ReadDirtyDataAt(data[:readSize], offset)
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maxStop = max(maxStop, m1)
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}
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m2 := pw.randomWriter.ReadDirtyDataAt(data[:readSize], offset)
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maxStop = max(maxStop, m2)
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maxStop = pw.randomWriter.ReadDirtyDataAt(data[:readSize], offset)
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offset += readSize
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data = data[readSize:]
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@ -85,16 +68,18 @@ func (pw *PageWriter) ReadDirtyDataAt(data []byte, offset int64) (maxStop int64)
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}
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func (pw *PageWriter) GetStorageOptions() (collection, replication string) {
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if pw.writerPattern.IsStreamingMode() && pw.streamWriter != nil {
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return pw.streamWriter.GetStorageOptions()
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}
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return pw.randomWriter.GetStorageOptions()
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}
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func (pw *PageWriter) LockForRead(startOffset, stopOffset int64) {
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pw.randomWriter.LockForRead(startOffset, stopOffset)
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}
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func (pw *PageWriter) UnlockForRead(startOffset, stopOffset int64) {
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pw.randomWriter.UnlockForRead(startOffset, stopOffset)
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}
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func (pw *PageWriter) Destroy() {
|
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if pw.streamWriter != nil {
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pw.streamWriter.Destroy()
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}
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pw.randomWriter.Destroy()
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}
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|
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@ -1,160 +0,0 @@
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package page_writer
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|
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import (
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"github.com/chrislusf/seaweedfs/weed/glog"
|
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"io"
|
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"os"
|
||||
"sync"
|
||||
)
|
||||
|
||||
type LogicChunkIndex int
|
||||
type ActualChunkIndex int
|
||||
|
||||
// ChunkedFileWriter assumes the write requests will come in within chunks
|
||||
type ChunkedFileWriter struct {
|
||||
dir string
|
||||
file *os.File
|
||||
logicToActualChunkIndex map[LogicChunkIndex]ActualChunkIndex
|
||||
chunkUsages []*ChunkWrittenIntervalList
|
||||
ChunkSize int64
|
||||
sync.Mutex
|
||||
}
|
||||
|
||||
var _ = io.WriterAt(&ChunkedFileWriter{})
|
||||
|
||||
func NewChunkedFileWriter(dir string, chunkSize int64) *ChunkedFileWriter {
|
||||
return &ChunkedFileWriter{
|
||||
dir: dir,
|
||||
file: nil,
|
||||
logicToActualChunkIndex: make(map[LogicChunkIndex]ActualChunkIndex),
|
||||
ChunkSize: chunkSize,
|
||||
}
|
||||
}
|
||||
|
||||
func (cw *ChunkedFileWriter) WriteAt(p []byte, off int64) (n int, err error) {
|
||||
cw.Lock()
|
||||
defer cw.Unlock()
|
||||
|
||||
if cw.file == nil {
|
||||
cw.file, err = os.CreateTemp(cw.dir, "")
|
||||
if err != nil {
|
||||
glog.Errorf("create temp file: %v", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
actualOffset, chunkUsage := cw.toActualWriteOffset(off)
|
||||
n, err = cw.file.WriteAt(p, actualOffset)
|
||||
if err == nil {
|
||||
startOffset := off % cw.ChunkSize
|
||||
chunkUsage.MarkWritten(startOffset, startOffset+int64(n))
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (cw *ChunkedFileWriter) ReadDataAt(p []byte, off int64) (maxStop int64) {
|
||||
cw.Lock()
|
||||
defer cw.Unlock()
|
||||
|
||||
if cw.file == nil {
|
||||
return
|
||||
}
|
||||
|
||||
logicChunkIndex := off / cw.ChunkSize
|
||||
actualChunkIndex, chunkUsage := cw.toActualReadOffset(off)
|
||||
if chunkUsage != nil {
|
||||
for t := chunkUsage.head.next; t != chunkUsage.tail; t = t.next {
|
||||
logicStart := max(off, logicChunkIndex*cw.ChunkSize+t.StartOffset)
|
||||
logicStop := min(off+int64(len(p)), logicChunkIndex*cw.ChunkSize+t.stopOffset)
|
||||
if logicStart < logicStop {
|
||||
actualStart := logicStart - logicChunkIndex*cw.ChunkSize + int64(actualChunkIndex)*cw.ChunkSize
|
||||
_, err := cw.file.ReadAt(p[logicStart-off:logicStop-off], actualStart)
|
||||
if err != nil {
|
||||
glog.Errorf("reading temp file: %v", err)
|
||||
break
|
||||
}
|
||||
maxStop = max(maxStop, logicStop)
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (cw *ChunkedFileWriter) toActualWriteOffset(logicOffset int64) (actualOffset int64, chunkUsage *ChunkWrittenIntervalList) {
|
||||
logicChunkIndex := LogicChunkIndex(logicOffset / cw.ChunkSize)
|
||||
offsetRemainder := logicOffset % cw.ChunkSize
|
||||
existingActualChunkIndex, found := cw.logicToActualChunkIndex[logicChunkIndex]
|
||||
if found {
|
||||
return int64(existingActualChunkIndex)*cw.ChunkSize + offsetRemainder, cw.chunkUsages[existingActualChunkIndex]
|
||||
}
|
||||
cw.logicToActualChunkIndex[logicChunkIndex] = ActualChunkIndex(len(cw.chunkUsages))
|
||||
chunkUsage = newChunkWrittenIntervalList()
|
||||
cw.chunkUsages = append(cw.chunkUsages, chunkUsage)
|
||||
return int64(len(cw.chunkUsages)-1)*cw.ChunkSize + offsetRemainder, chunkUsage
|
||||
}
|
||||
|
||||
func (cw *ChunkedFileWriter) toActualReadOffset(logicOffset int64) (actualChunkIndex ActualChunkIndex, chunkUsage *ChunkWrittenIntervalList) {
|
||||
logicChunkIndex := LogicChunkIndex(logicOffset / cw.ChunkSize)
|
||||
existingActualChunkIndex, found := cw.logicToActualChunkIndex[logicChunkIndex]
|
||||
if found {
|
||||
return existingActualChunkIndex, cw.chunkUsages[existingActualChunkIndex]
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (cw *ChunkedFileWriter) ProcessEachInterval(process func(file *os.File, logicChunkIndex LogicChunkIndex, interval *ChunkWrittenInterval)) {
|
||||
for logicChunkIndex, actualChunkIndex := range cw.logicToActualChunkIndex {
|
||||
chunkUsage := cw.chunkUsages[actualChunkIndex]
|
||||
for t := chunkUsage.head.next; t != chunkUsage.tail; t = t.next {
|
||||
process(cw.file, logicChunkIndex, t)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Reset releases used resources
|
||||
func (cw *ChunkedFileWriter) Reset() {
|
||||
if cw.file != nil {
|
||||
cw.file.Close()
|
||||
os.Remove(cw.file.Name())
|
||||
cw.file = nil
|
||||
}
|
||||
cw.logicToActualChunkIndex = make(map[LogicChunkIndex]ActualChunkIndex)
|
||||
cw.chunkUsages = cw.chunkUsages[:0]
|
||||
}
|
||||
|
||||
type FileIntervalReader struct {
|
||||
f *os.File
|
||||
startOffset int64
|
||||
stopOffset int64
|
||||
position int64
|
||||
}
|
||||
|
||||
var _ = io.Reader(&FileIntervalReader{})
|
||||
|
||||
func NewFileIntervalReader(cw *ChunkedFileWriter, logicChunkIndex LogicChunkIndex, interval *ChunkWrittenInterval) *FileIntervalReader {
|
||||
actualChunkIndex, found := cw.logicToActualChunkIndex[logicChunkIndex]
|
||||
if !found {
|
||||
// this should never happen
|
||||
return nil
|
||||
}
|
||||
return &FileIntervalReader{
|
||||
f: cw.file,
|
||||
startOffset: int64(actualChunkIndex)*cw.ChunkSize + interval.StartOffset,
|
||||
stopOffset: int64(actualChunkIndex)*cw.ChunkSize + interval.stopOffset,
|
||||
position: 0,
|
||||
}
|
||||
}
|
||||
|
||||
func (fr *FileIntervalReader) Read(p []byte) (n int, err error) {
|
||||
readSize := minInt(len(p), int(fr.stopOffset-fr.startOffset-fr.position))
|
||||
n, err = fr.f.ReadAt(p[:readSize], fr.startOffset+fr.position)
|
||||
if err == nil || err == io.EOF {
|
||||
fr.position += int64(n)
|
||||
if fr.stopOffset-fr.startOffset-fr.position == 0 {
|
||||
// return a tiny bit faster
|
||||
err = io.EOF
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
|
@ -1,60 +0,0 @@
|
|||
package page_writer
|
||||
|
||||
import (
|
||||
"github.com/stretchr/testify/assert"
|
||||
"os"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestChunkedFileWriter_toActualOffset(t *testing.T) {
|
||||
cw := NewChunkedFileWriter("", 16)
|
||||
|
||||
writeToFile(cw, 50, 60)
|
||||
writeToFile(cw, 60, 64)
|
||||
|
||||
writeToFile(cw, 32, 40)
|
||||
writeToFile(cw, 42, 48)
|
||||
|
||||
writeToFile(cw, 48, 50)
|
||||
|
||||
assert.Equal(t, 1, cw.chunkUsages[0].size(), "fully covered")
|
||||
assert.Equal(t, 2, cw.chunkUsages[1].size(), "2 intervals")
|
||||
|
||||
}
|
||||
|
||||
func writeToFile(cw *ChunkedFileWriter, startOffset int64, stopOffset int64) {
|
||||
|
||||
_, chunkUsage := cw.toActualWriteOffset(startOffset)
|
||||
|
||||
// skip doing actual writing
|
||||
|
||||
innerOffset := startOffset % cw.ChunkSize
|
||||
chunkUsage.MarkWritten(innerOffset, innerOffset+stopOffset-startOffset)
|
||||
|
||||
}
|
||||
|
||||
func TestWriteChunkedFile(t *testing.T) {
|
||||
x := NewChunkedFileWriter(os.TempDir(), 20)
|
||||
defer x.Reset()
|
||||
y := NewChunkedFileWriter(os.TempDir(), 12)
|
||||
defer y.Reset()
|
||||
|
||||
batchSize := 4
|
||||
buf := make([]byte, batchSize)
|
||||
for i := 0; i < 256; i++ {
|
||||
for x := 0; x < batchSize; x++ {
|
||||
buf[x] = byte(i)
|
||||
}
|
||||
x.WriteAt(buf, int64(i*batchSize))
|
||||
y.WriteAt(buf, int64((255-i)*batchSize))
|
||||
}
|
||||
|
||||
a := make([]byte, 1)
|
||||
b := make([]byte, 1)
|
||||
for i := 0; i < 256*batchSize; i++ {
|
||||
x.ReadDataAt(a, int64(i))
|
||||
y.ReadDataAt(b, int64(256*batchSize-1-i))
|
||||
assert.Equal(t, a[0], b[0], "same read")
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,119 +1,12 @@
|
|||
package page_writer
|
||||
|
||||
import (
|
||||
"github.com/chrislusf/seaweedfs/weed/util"
|
||||
"github.com/chrislusf/seaweedfs/weed/util/mem"
|
||||
"io"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
type SaveToStorageFunc func(reader io.Reader, offset int64, size int64, cleanupFn func())
|
||||
|
||||
// ChunkedStreamWriter assumes the write requests will come in within chunks and in streaming mode
|
||||
type ChunkedStreamWriter struct {
|
||||
activeChunks map[LogicChunkIndex]*MemChunk
|
||||
activeChunksLock sync.Mutex
|
||||
ChunkSize int64
|
||||
saveToStorageFn SaveToStorageFunc
|
||||
sync.Mutex
|
||||
}
|
||||
|
||||
type MemChunk struct {
|
||||
buf []byte
|
||||
usage *ChunkWrittenIntervalList
|
||||
}
|
||||
|
||||
var _ = io.WriterAt(&ChunkedStreamWriter{})
|
||||
|
||||
func NewChunkedStreamWriter(chunkSize int64) *ChunkedStreamWriter {
|
||||
return &ChunkedStreamWriter{
|
||||
ChunkSize: chunkSize,
|
||||
activeChunks: make(map[LogicChunkIndex]*MemChunk),
|
||||
}
|
||||
}
|
||||
|
||||
func (cw *ChunkedStreamWriter) SetSaveToStorageFunction(saveToStorageFn SaveToStorageFunc) {
|
||||
cw.saveToStorageFn = saveToStorageFn
|
||||
}
|
||||
|
||||
func (cw *ChunkedStreamWriter) WriteAt(p []byte, off int64) (n int, err error) {
|
||||
cw.Lock()
|
||||
defer cw.Unlock()
|
||||
|
||||
logicChunkIndex := LogicChunkIndex(off / cw.ChunkSize)
|
||||
offsetRemainder := off % cw.ChunkSize
|
||||
|
||||
memChunk, found := cw.activeChunks[logicChunkIndex]
|
||||
if !found {
|
||||
memChunk = &MemChunk{
|
||||
buf: mem.Allocate(int(cw.ChunkSize)),
|
||||
usage: newChunkWrittenIntervalList(),
|
||||
}
|
||||
cw.activeChunks[logicChunkIndex] = memChunk
|
||||
}
|
||||
n = copy(memChunk.buf[offsetRemainder:], p)
|
||||
memChunk.usage.MarkWritten(offsetRemainder, offsetRemainder+int64(n))
|
||||
if memChunk.usage.IsComplete(cw.ChunkSize) {
|
||||
if cw.saveToStorageFn != nil {
|
||||
cw.saveOneChunk(memChunk, logicChunkIndex)
|
||||
delete(cw.activeChunks, logicChunkIndex)
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (cw *ChunkedStreamWriter) ReadDataAt(p []byte, off int64) (maxStop int64) {
|
||||
cw.Lock()
|
||||
defer cw.Unlock()
|
||||
|
||||
logicChunkIndex := LogicChunkIndex(off / cw.ChunkSize)
|
||||
memChunkBaseOffset := int64(logicChunkIndex) * cw.ChunkSize
|
||||
memChunk, found := cw.activeChunks[logicChunkIndex]
|
||||
if !found {
|
||||
return
|
||||
}
|
||||
|
||||
for t := memChunk.usage.head.next; t != memChunk.usage.tail; t = t.next {
|
||||
logicStart := max(off, int64(logicChunkIndex)*cw.ChunkSize+t.StartOffset)
|
||||
logicStop := min(off+int64(len(p)), memChunkBaseOffset+t.stopOffset)
|
||||
if logicStart < logicStop {
|
||||
copy(p[logicStart-off:logicStop-off], memChunk.buf[logicStart-memChunkBaseOffset:logicStop-memChunkBaseOffset])
|
||||
maxStop = max(maxStop, logicStop)
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (cw *ChunkedStreamWriter) FlushAll() {
|
||||
cw.Lock()
|
||||
defer cw.Unlock()
|
||||
for logicChunkIndex, memChunk := range cw.activeChunks {
|
||||
if cw.saveToStorageFn != nil {
|
||||
cw.saveOneChunk(memChunk, logicChunkIndex)
|
||||
delete(cw.activeChunks, logicChunkIndex)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (cw *ChunkedStreamWriter) saveOneChunk(memChunk *MemChunk, logicChunkIndex LogicChunkIndex) {
|
||||
var referenceCounter = int32(memChunk.usage.size())
|
||||
for t := memChunk.usage.head.next; t != memChunk.usage.tail; t = t.next {
|
||||
reader := util.NewBytesReader(memChunk.buf[t.StartOffset:t.stopOffset])
|
||||
cw.saveToStorageFn(reader, int64(logicChunkIndex)*cw.ChunkSize+t.StartOffset, t.Size(), func() {
|
||||
atomic.AddInt32(&referenceCounter, -1)
|
||||
if atomic.LoadInt32(&referenceCounter) == 0 {
|
||||
mem.Free(memChunk.buf)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// Reset releases used resources
|
||||
func (cw *ChunkedStreamWriter) Reset() {
|
||||
for t, memChunk := range cw.activeChunks {
|
||||
mem.Free(memChunk.buf)
|
||||
delete(cw.activeChunks, t)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,33 +0,0 @@
|
|||
package page_writer
|
||||
|
||||
import (
|
||||
"github.com/stretchr/testify/assert"
|
||||
"os"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestWriteChunkedStream(t *testing.T) {
|
||||
x := NewChunkedStreamWriter(20)
|
||||
defer x.Reset()
|
||||
y := NewChunkedFileWriter(os.TempDir(), 12)
|
||||
defer y.Reset()
|
||||
|
||||
batchSize := 4
|
||||
buf := make([]byte, batchSize)
|
||||
for i := 0; i < 256; i++ {
|
||||
for x := 0; x < batchSize; x++ {
|
||||
buf[x] = byte(i)
|
||||
}
|
||||
x.WriteAt(buf, int64(i*batchSize))
|
||||
y.WriteAt(buf, int64((255-i)*batchSize))
|
||||
}
|
||||
|
||||
a := make([]byte, 1)
|
||||
b := make([]byte, 1)
|
||||
for i := 0; i < 256*batchSize; i++ {
|
||||
x.ReadDataAt(a, int64(i))
|
||||
y.ReadDataAt(b, int64(256*batchSize-1-i))
|
||||
assert.Equal(t, a[0], b[0], "same read")
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,222 +0,0 @@
|
|||
package page_writer
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"github.com/chrislusf/seaweedfs/weed/util"
|
||||
)
|
||||
|
||||
type IntervalNode struct {
|
||||
Data []byte
|
||||
Offset int64
|
||||
Size int64
|
||||
Next *IntervalNode
|
||||
}
|
||||
|
||||
type IntervalLinkedList struct {
|
||||
Head *IntervalNode
|
||||
Tail *IntervalNode
|
||||
}
|
||||
|
||||
type ContinuousIntervals struct {
|
||||
lists []*IntervalLinkedList
|
||||
}
|
||||
|
||||
func (list *IntervalLinkedList) Offset() int64 {
|
||||
return list.Head.Offset
|
||||
}
|
||||
func (list *IntervalLinkedList) Size() int64 {
|
||||
return list.Tail.Offset + list.Tail.Size - list.Head.Offset
|
||||
}
|
||||
func (list *IntervalLinkedList) addNodeToTail(node *IntervalNode) {
|
||||
// glog.V(4).Infof("add to tail [%d,%d) + [%d,%d) => [%d,%d)", list.Head.Offset, list.Tail.Offset+list.Tail.Size, node.Offset, node.Offset+node.Size, list.Head.Offset, node.Offset+node.Size)
|
||||
list.Tail.Next = node
|
||||
list.Tail = node
|
||||
}
|
||||
func (list *IntervalLinkedList) addNodeToHead(node *IntervalNode) {
|
||||
// glog.V(4).Infof("add to head [%d,%d) + [%d,%d) => [%d,%d)", node.Offset, node.Offset+node.Size, list.Head.Offset, list.Tail.Offset+list.Tail.Size, node.Offset, list.Tail.Offset+list.Tail.Size)
|
||||
node.Next = list.Head
|
||||
list.Head = node
|
||||
}
|
||||
|
||||
func (list *IntervalLinkedList) ReadData(buf []byte, start, stop int64) {
|
||||
t := list.Head
|
||||
for {
|
||||
|
||||
nodeStart, nodeStop := max(start, t.Offset), min(stop, t.Offset+t.Size)
|
||||
if nodeStart < nodeStop {
|
||||
// glog.V(0).Infof("copying start=%d stop=%d t=[%d,%d) t.data=%d => bufSize=%d nodeStart=%d, nodeStop=%d", start, stop, t.Offset, t.Offset+t.Size, len(t.Data), len(buf), nodeStart, nodeStop)
|
||||
copy(buf[nodeStart-start:], t.Data[nodeStart-t.Offset:nodeStop-t.Offset])
|
||||
}
|
||||
|
||||
if t.Next == nil {
|
||||
break
|
||||
}
|
||||
t = t.Next
|
||||
}
|
||||
}
|
||||
|
||||
func (c *ContinuousIntervals) TotalSize() (total int64) {
|
||||
for _, list := range c.lists {
|
||||
total += list.Size()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func subList(list *IntervalLinkedList, start, stop int64) *IntervalLinkedList {
|
||||
var nodes []*IntervalNode
|
||||
for t := list.Head; t != nil; t = t.Next {
|
||||
nodeStart, nodeStop := max(start, t.Offset), min(stop, t.Offset+t.Size)
|
||||
if nodeStart >= nodeStop {
|
||||
// skip non overlapping IntervalNode
|
||||
continue
|
||||
}
|
||||
nodes = append(nodes, &IntervalNode{
|
||||
Data: t.Data[nodeStart-t.Offset : nodeStop-t.Offset],
|
||||
Offset: nodeStart,
|
||||
Size: nodeStop - nodeStart,
|
||||
Next: nil,
|
||||
})
|
||||
}
|
||||
for i := 1; i < len(nodes); i++ {
|
||||
nodes[i-1].Next = nodes[i]
|
||||
}
|
||||
return &IntervalLinkedList{
|
||||
Head: nodes[0],
|
||||
Tail: nodes[len(nodes)-1],
|
||||
}
|
||||
}
|
||||
|
||||
func (c *ContinuousIntervals) AddInterval(data []byte, offset int64) {
|
||||
|
||||
interval := &IntervalNode{Data: data, Offset: offset, Size: int64(len(data))}
|
||||
|
||||
// append to the tail and return
|
||||
if len(c.lists) == 1 {
|
||||
lastSpan := c.lists[0]
|
||||
if lastSpan.Tail.Offset+lastSpan.Tail.Size == offset {
|
||||
lastSpan.addNodeToTail(interval)
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
var newLists []*IntervalLinkedList
|
||||
for _, list := range c.lists {
|
||||
// if list is to the left of new interval, add to the new list
|
||||
if list.Tail.Offset+list.Tail.Size <= interval.Offset {
|
||||
newLists = append(newLists, list)
|
||||
}
|
||||
// if list is to the right of new interval, add to the new list
|
||||
if interval.Offset+interval.Size <= list.Head.Offset {
|
||||
newLists = append(newLists, list)
|
||||
}
|
||||
// if new interval overwrite the right part of the list
|
||||
if list.Head.Offset < interval.Offset && interval.Offset < list.Tail.Offset+list.Tail.Size {
|
||||
// create a new list of the left part of existing list
|
||||
newLists = append(newLists, subList(list, list.Offset(), interval.Offset))
|
||||
}
|
||||
// if new interval overwrite the left part of the list
|
||||
if list.Head.Offset < interval.Offset+interval.Size && interval.Offset+interval.Size < list.Tail.Offset+list.Tail.Size {
|
||||
// create a new list of the right part of existing list
|
||||
newLists = append(newLists, subList(list, interval.Offset+interval.Size, list.Tail.Offset+list.Tail.Size))
|
||||
}
|
||||
// skip anything that is fully overwritten by the new interval
|
||||
}
|
||||
|
||||
c.lists = newLists
|
||||
// add the new interval to the lists, connecting neighbor lists
|
||||
var prevList, nextList *IntervalLinkedList
|
||||
|
||||
for _, list := range c.lists {
|
||||
if list.Head.Offset == interval.Offset+interval.Size {
|
||||
nextList = list
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
for _, list := range c.lists {
|
||||
if list.Head.Offset+list.Size() == offset {
|
||||
list.addNodeToTail(interval)
|
||||
prevList = list
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if prevList != nil && nextList != nil {
|
||||
// glog.V(4).Infof("connecting [%d,%d) + [%d,%d) => [%d,%d)", prevList.Head.Offset, prevList.Tail.Offset+prevList.Tail.Size, nextList.Head.Offset, nextList.Tail.Offset+nextList.Tail.Size, prevList.Head.Offset, nextList.Tail.Offset+nextList.Tail.Size)
|
||||
prevList.Tail.Next = nextList.Head
|
||||
prevList.Tail = nextList.Tail
|
||||
c.removeList(nextList)
|
||||
} else if nextList != nil {
|
||||
// add to head was not done when checking
|
||||
nextList.addNodeToHead(interval)
|
||||
}
|
||||
if prevList == nil && nextList == nil {
|
||||
c.lists = append(c.lists, &IntervalLinkedList{
|
||||
Head: interval,
|
||||
Tail: interval,
|
||||
})
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (c *ContinuousIntervals) RemoveLargestIntervalLinkedList() *IntervalLinkedList {
|
||||
var maxSize int64
|
||||
maxIndex := -1
|
||||
for k, list := range c.lists {
|
||||
if maxSize <= list.Size() {
|
||||
maxSize = list.Size()
|
||||
maxIndex = k
|
||||
}
|
||||
}
|
||||
if maxSize <= 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
t := c.lists[maxIndex]
|
||||
c.lists = append(c.lists[0:maxIndex], c.lists[maxIndex+1:]...)
|
||||
return t
|
||||
|
||||
}
|
||||
|
||||
func (c *ContinuousIntervals) removeList(target *IntervalLinkedList) {
|
||||
index := -1
|
||||
for k, list := range c.lists {
|
||||
if list.Offset() == target.Offset() {
|
||||
index = k
|
||||
}
|
||||
}
|
||||
if index < 0 {
|
||||
return
|
||||
}
|
||||
|
||||
c.lists = append(c.lists[0:index], c.lists[index+1:]...)
|
||||
|
||||
}
|
||||
|
||||
func (c *ContinuousIntervals) ReadDataAt(data []byte, startOffset int64) (maxStop int64) {
|
||||
for _, list := range c.lists {
|
||||
start := max(startOffset, list.Offset())
|
||||
stop := min(startOffset+int64(len(data)), list.Offset()+list.Size())
|
||||
if start < stop {
|
||||
list.ReadData(data[start-startOffset:], start, stop)
|
||||
maxStop = max(maxStop, stop)
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (l *IntervalLinkedList) ToReader() io.Reader {
|
||||
var readers []io.Reader
|
||||
t := l.Head
|
||||
readers = append(readers, util.NewBytesReader(t.Data))
|
||||
for t.Next != nil {
|
||||
t = t.Next
|
||||
readers = append(readers, util.NewBytesReader(t.Data))
|
||||
}
|
||||
if len(readers) == 1 {
|
||||
return readers[0]
|
||||
}
|
||||
return io.MultiReader(readers...)
|
||||
}
|
||||
|
|
@ -1,113 +0,0 @@
|
|||
package page_writer
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"math/rand"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestContinuousIntervals_AddIntervalAppend(t *testing.T) {
|
||||
|
||||
c := &ContinuousIntervals{}
|
||||
|
||||
// 25, 25, 25
|
||||
c.AddInterval(getBytes(25, 3), 0)
|
||||
// _, _, 23, 23, 23, 23
|
||||
c.AddInterval(getBytes(23, 4), 2)
|
||||
|
||||
expectedData(t, c, 0, 25, 25, 23, 23, 23, 23)
|
||||
|
||||
}
|
||||
|
||||
func TestContinuousIntervals_AddIntervalInnerOverwrite(t *testing.T) {
|
||||
|
||||
c := &ContinuousIntervals{}
|
||||
|
||||
// 25, 25, 25, 25, 25
|
||||
c.AddInterval(getBytes(25, 5), 0)
|
||||
// _, _, 23, 23
|
||||
c.AddInterval(getBytes(23, 2), 2)
|
||||
|
||||
expectedData(t, c, 0, 25, 25, 23, 23, 25)
|
||||
|
||||
}
|
||||
|
||||
func TestContinuousIntervals_AddIntervalFullOverwrite(t *testing.T) {
|
||||
|
||||
c := &ContinuousIntervals{}
|
||||
|
||||
// 1,
|
||||
c.AddInterval(getBytes(1, 1), 0)
|
||||
// _, 2,
|
||||
c.AddInterval(getBytes(2, 1), 1)
|
||||
// _, _, 3, 3, 3
|
||||
c.AddInterval(getBytes(3, 3), 2)
|
||||
// _, _, _, 4, 4, 4
|
||||
c.AddInterval(getBytes(4, 3), 3)
|
||||
|
||||
expectedData(t, c, 0, 1, 2, 3, 4, 4, 4)
|
||||
|
||||
}
|
||||
|
||||
func TestContinuousIntervals_RealCase1(t *testing.T) {
|
||||
|
||||
c := &ContinuousIntervals{}
|
||||
|
||||
// 25,
|
||||
c.AddInterval(getBytes(25, 1), 0)
|
||||
// _, _, _, _, 23, 23
|
||||
c.AddInterval(getBytes(23, 2), 4)
|
||||
// _, _, _, 24, 24, 24, 24
|
||||
c.AddInterval(getBytes(24, 4), 3)
|
||||
|
||||
// _, 22, 22
|
||||
c.AddInterval(getBytes(22, 2), 1)
|
||||
|
||||
expectedData(t, c, 0, 25, 22, 22, 24, 24, 24, 24)
|
||||
|
||||
}
|
||||
|
||||
func TestRandomWrites(t *testing.T) {
|
||||
|
||||
c := &ContinuousIntervals{}
|
||||
|
||||
data := make([]byte, 1024)
|
||||
|
||||
for i := 0; i < 1024; i++ {
|
||||
|
||||
start, stop := rand.Intn(len(data)), rand.Intn(len(data))
|
||||
if start > stop {
|
||||
start, stop = stop, start
|
||||
}
|
||||
|
||||
rand.Read(data[start : stop+1])
|
||||
|
||||
c.AddInterval(data[start:stop+1], int64(start))
|
||||
|
||||
expectedData(t, c, 0, data...)
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func expectedData(t *testing.T, c *ContinuousIntervals, offset int, data ...byte) {
|
||||
start, stop := int64(offset), int64(offset+len(data))
|
||||
for _, list := range c.lists {
|
||||
nodeStart, nodeStop := max(start, list.Head.Offset), min(stop, list.Head.Offset+list.Size())
|
||||
if nodeStart < nodeStop {
|
||||
buf := make([]byte, nodeStop-nodeStart)
|
||||
list.ReadData(buf, nodeStart, nodeStop)
|
||||
if bytes.Compare(buf, data[nodeStart-start:nodeStop-start]) != 0 {
|
||||
t.Errorf("expected %v actual %v", data[nodeStart-start:nodeStop-start], buf)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func getBytes(content byte, length int) []byte {
|
||||
data := make([]byte, length)
|
||||
for i := 0; i < length; i++ {
|
||||
data[i] = content
|
||||
}
|
||||
return data
|
||||
}
|
||||
|
|
@ -6,6 +6,8 @@ type DirtyPages interface {
|
|||
ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64)
|
||||
GetStorageOptions() (collection, replication string)
|
||||
Destroy()
|
||||
LockForRead(startOffset, stopOffset int64)
|
||||
UnlockForRead(startOffset, stopOffset int64)
|
||||
}
|
||||
|
||||
func max(x, y int64) int64 {
|
||||
|
|
|
|||
|
|
@ -7,19 +7,24 @@ import (
|
|||
"github.com/chrislusf/seaweedfs/weed/util/mem"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
"time"
|
||||
)
|
||||
|
||||
type LogicChunkIndex int
|
||||
|
||||
type UploadPipeline struct {
|
||||
writableChunks map[LogicChunkIndex]*MemChunk
|
||||
writableChunksLock sync.Mutex
|
||||
sealedChunks map[LogicChunkIndex]*SealedChunk
|
||||
sealedChunksLock sync.Mutex
|
||||
ChunkSize int64
|
||||
writers *util.LimitedConcurrentExecutor
|
||||
activeWriterCond *sync.Cond
|
||||
activeWriterCount int32
|
||||
saveToStorageFn SaveToStorageFunc
|
||||
filepath util.FullPath
|
||||
filepath util.FullPath
|
||||
ChunkSize int64
|
||||
writers *util.LimitedConcurrentExecutor
|
||||
writableChunks map[LogicChunkIndex]*MemChunk
|
||||
writableChunksLock sync.Mutex
|
||||
sealedChunks map[LogicChunkIndex]*SealedChunk
|
||||
sealedChunksLock sync.Mutex
|
||||
activeWriterCond *sync.Cond
|
||||
activeWriterCount int32
|
||||
activeReadChunks map[LogicChunkIndex]int
|
||||
activeReadChunksLock sync.Mutex
|
||||
saveToStorageFn SaveToStorageFunc
|
||||
}
|
||||
|
||||
type SealedChunk struct {
|
||||
|
|
@ -44,6 +49,7 @@ func NewUploadPipeline(filepath util.FullPath, writers *util.LimitedConcurrentEx
|
|||
activeWriterCond: sync.NewCond(&sync.Mutex{}),
|
||||
saveToStorageFn: saveToStorageFn,
|
||||
filepath: filepath,
|
||||
activeReadChunks: make(map[LogicChunkIndex]int),
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -110,6 +116,51 @@ func (cw *UploadPipeline) FlushAll() {
|
|||
cw.waitForCurrentWritersToComplete()
|
||||
}
|
||||
|
||||
func (cw *UploadPipeline) LockForRead(startOffset, stopOffset int64) {
|
||||
startLogicChunkIndex := LogicChunkIndex(startOffset / cw.ChunkSize)
|
||||
stopLogicChunkIndex := LogicChunkIndex(stopOffset / cw.ChunkSize)
|
||||
if stopOffset%cw.ChunkSize > 0 {
|
||||
stopLogicChunkIndex += 1
|
||||
}
|
||||
cw.activeReadChunksLock.Lock()
|
||||
defer cw.activeReadChunksLock.Unlock()
|
||||
for i := startLogicChunkIndex; i < stopLogicChunkIndex; i++ {
|
||||
if count, found := cw.activeReadChunks[i]; found {
|
||||
cw.activeReadChunks[i] = count + 1
|
||||
} else {
|
||||
cw.activeReadChunks[i] = 1
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (cw *UploadPipeline) UnlockForRead(startOffset, stopOffset int64) {
|
||||
startLogicChunkIndex := LogicChunkIndex(startOffset / cw.ChunkSize)
|
||||
stopLogicChunkIndex := LogicChunkIndex(stopOffset / cw.ChunkSize)
|
||||
if stopOffset%cw.ChunkSize > 0 {
|
||||
stopLogicChunkIndex += 1
|
||||
}
|
||||
cw.activeReadChunksLock.Lock()
|
||||
defer cw.activeReadChunksLock.Unlock()
|
||||
for i := startLogicChunkIndex; i < stopLogicChunkIndex; i++ {
|
||||
if count, found := cw.activeReadChunks[i]; found {
|
||||
if count == 1 {
|
||||
delete(cw.activeReadChunks, i)
|
||||
} else {
|
||||
cw.activeReadChunks[i] = count - 1
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (cw *UploadPipeline) IsLocked(logicChunkIndex LogicChunkIndex) bool {
|
||||
cw.activeReadChunksLock.Lock()
|
||||
defer cw.activeReadChunksLock.Unlock()
|
||||
if count, found := cw.activeReadChunks[logicChunkIndex]; found {
|
||||
return count > 0
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (cw *UploadPipeline) waitForCurrentWritersToComplete() {
|
||||
cw.activeWriterCond.L.Lock()
|
||||
t := int32(100)
|
||||
|
|
@ -152,12 +203,7 @@ func (cw *UploadPipeline) moveToSealed(memChunk *MemChunk, logicChunkIndex Logic
|
|||
// first add to the file chunks
|
||||
cw.saveOneChunk(sealedChunk.chunk, logicChunkIndex)
|
||||
|
||||
// then remove from sealed chunks
|
||||
cw.sealedChunksLock.Lock()
|
||||
defer cw.sealedChunksLock.Unlock()
|
||||
delete(cw.sealedChunks, logicChunkIndex)
|
||||
sealedChunk.FreeReference(fmt.Sprintf("%s finished uploading chunk %d", cw.filepath, logicChunkIndex))
|
||||
|
||||
// notify waiting process
|
||||
atomic.AddInt32(&cw.activeWriterCount, -1)
|
||||
glog.V(4).Infof("%s activeWriterCount %d --> %d", cw.filepath, cw.activeWriterCount+1, cw.activeWriterCount)
|
||||
// Lock and Unlock are not required,
|
||||
|
|
@ -166,6 +212,18 @@ func (cw *UploadPipeline) moveToSealed(memChunk *MemChunk, logicChunkIndex Logic
|
|||
cw.activeWriterCond.L.Lock()
|
||||
cw.activeWriterCond.Broadcast()
|
||||
cw.activeWriterCond.L.Unlock()
|
||||
|
||||
// wait for readers
|
||||
for cw.IsLocked(logicChunkIndex) {
|
||||
time.Sleep(59 * time.Millisecond)
|
||||
}
|
||||
|
||||
// then remove from sealed chunks
|
||||
cw.sealedChunksLock.Lock()
|
||||
defer cw.sealedChunksLock.Unlock()
|
||||
delete(cw.sealedChunks, logicChunkIndex)
|
||||
sealedChunk.FreeReference(fmt.Sprintf("%s finished uploading chunk %d", cw.filepath, logicChunkIndex))
|
||||
|
||||
})
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@ import (
|
|||
|
||||
func TestUploadPipeline(t *testing.T) {
|
||||
|
||||
uploadPipeline := NewUploadPipeline(nil, 2*1024*1024, nil)
|
||||
uploadPipeline := NewUploadPipeline("", nil, 2*1024*1024, nil)
|
||||
|
||||
writeRange(uploadPipeline, 0, 131072)
|
||||
writeRange(uploadPipeline, 131072, 262144)
|
||||
|
|
|
|||
Loading…
Reference in a new issue