mirror of
https://github.com/seaweedfs/seaweedfs.git
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95 lines
2.6 KiB
Go
95 lines
2.6 KiB
Go
package mount
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import (
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"fmt"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/mount/page_writer"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"io"
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"sync"
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)
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type ChunkedDirtyPages struct {
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fh *FileHandle
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writeWaitGroup sync.WaitGroup
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lastErr error
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collection string
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replication string
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uploadPipeline *page_writer.UploadPipeline
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hasWrites bool
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}
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var (
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_ = page_writer.DirtyPages(&ChunkedDirtyPages{})
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)
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func newMemoryChunkPages(fh *FileHandle, chunkSize int64) *ChunkedDirtyPages {
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dirtyPages := &ChunkedDirtyPages{
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fh: fh,
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}
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swapFileDir := fh.wfs.option.getUniqueCacheDirForWrite()
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dirtyPages.uploadPipeline = page_writer.NewUploadPipeline(fh.wfs.concurrentWriters, chunkSize,
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dirtyPages.saveChunkedFileIntervalToStorage, fh.wfs.option.ConcurrentWriters, swapFileDir)
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return dirtyPages
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}
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func (pages *ChunkedDirtyPages) AddPage(offset int64, data []byte, isSequential bool, tsNs int64) {
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pages.hasWrites = true
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glog.V(4).Infof("%v memory AddPage [%d, %d)", pages.fh.fh, offset, offset+int64(len(data)))
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pages.uploadPipeline.SaveDataAt(data, offset, isSequential, tsNs)
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return
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}
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func (pages *ChunkedDirtyPages) FlushData() error {
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if !pages.hasWrites {
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return nil
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}
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pages.uploadPipeline.FlushAll()
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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 *ChunkedDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64, tsNs int64) (maxStop int64) {
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if !pages.hasWrites {
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return
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}
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return pages.uploadPipeline.MaybeReadDataAt(data, startOffset, tsNs)
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}
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func (pages *ChunkedDirtyPages) saveChunkedFileIntervalToStorage(reader io.Reader, offset int64, size int64, modifiedTsNs int64, cleanupFn func()) {
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defer cleanupFn()
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fileFullPath := pages.fh.FullPath()
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fileName := fileFullPath.Name()
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chunk, err := pages.fh.wfs.saveDataAsChunk(fileFullPath)(reader, fileName, offset, modifiedTsNs)
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if err != nil {
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glog.V(0).Infof("%v saveToStorage [%d,%d): %v", fileFullPath, offset, offset+size, err)
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pages.lastErr = err
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return
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}
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pages.fh.AddChunks([]*filer_pb.FileChunk{chunk})
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pages.fh.entryChunkGroup.AddChunk(chunk)
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glog.V(3).Infof("%v saveToStorage %s [%d,%d)", fileFullPath, chunk.FileId, offset, offset+size)
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}
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func (pages ChunkedDirtyPages) Destroy() {
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pages.uploadPipeline.Shutdown()
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}
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func (pages *ChunkedDirtyPages) LockForRead(startOffset, stopOffset int64) {
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pages.uploadPipeline.LockForRead(startOffset, stopOffset)
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}
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func (pages *ChunkedDirtyPages) UnlockForRead(startOffset, stopOffset int64) {
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pages.uploadPipeline.UnlockForRead(startOffset, stopOffset)
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}
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