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package mount
import (
"fmt"
"io"
"sync"
"github.com/seaweedfs/seaweedfs/weed/util/log"
"github.com/seaweedfs/seaweedfs/weed/mount/page_writer"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
)
type ChunkedDirtyPages struct {
fh *FileHandle
writeWaitGroup sync.WaitGroup
lastErr error
collection string
replication string
uploadPipeline *page_writer.UploadPipeline
hasWrites bool
}
var (
_ = page_writer.DirtyPages(&ChunkedDirtyPages{})
)
func newMemoryChunkPages(fh *FileHandle, chunkSize int64) *ChunkedDirtyPages {
dirtyPages := &ChunkedDirtyPages{
fh: fh,
}
swapFileDir := fh.wfs.option.getUniqueCacheDirForWrite()
dirtyPages.uploadPipeline = page_writer.NewUploadPipeline(fh.wfs.concurrentWriters, chunkSize,
dirtyPages.saveChunkedFileIntervalToStorage, fh.wfs.option.ConcurrentWriters, swapFileDir)
return dirtyPages
}
func (pages *ChunkedDirtyPages) AddPage(offset int64, data []byte, isSequential bool, tsNs int64) {
pages.hasWrites = true
log.V(-1).Infof("%v memory AddPage [%d, %d)", pages.fh.fh, offset, offset+int64(len(data)))
pages.uploadPipeline.SaveDataAt(data, offset, isSequential, tsNs)
return
}
func (pages *ChunkedDirtyPages) FlushData() error {
if !pages.hasWrites {
return nil
}
pages.uploadPipeline.FlushAll()
if pages.lastErr != nil {
return fmt.Errorf("flush data: %v", pages.lastErr)
}
return nil
}
func (pages *ChunkedDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64, tsNs int64) (maxStop int64) {
if !pages.hasWrites {
return
}
return pages.uploadPipeline.MaybeReadDataAt(data, startOffset, tsNs)
}
func (pages *ChunkedDirtyPages) saveChunkedFileIntervalToStorage(reader io.Reader, offset int64, size int64, modifiedTsNs int64, cleanupFn func()) {
defer cleanupFn()
fileFullPath := pages.fh.FullPath()
fileName := fileFullPath.Name()
chunk, err := pages.fh.wfs.saveDataAsChunk(fileFullPath)(reader, fileName, offset, modifiedTsNs)
if err != nil {
log.V(3).Infof("%v saveToStorage [%d,%d): %v", fileFullPath, offset, offset+size, err)
pages.lastErr = err
return
}
pages.fh.AddChunks([]*filer_pb.FileChunk{chunk})
pages.fh.entryChunkGroup.AddChunk(chunk)
log.V(0).Infof("%v saveToStorage %s [%d,%d)", fileFullPath, chunk.FileId, offset, offset+size)
}
func (pages *ChunkedDirtyPages) Destroy() {
pages.uploadPipeline.Shutdown()
}
func (pages *ChunkedDirtyPages) LockForRead(startOffset, stopOffset int64) {
pages.uploadPipeline.LockForRead(startOffset, stopOffset)
}
func (pages *ChunkedDirtyPages) UnlockForRead(startOffset, stopOffset int64) {
pages.uploadPipeline.UnlockForRead(startOffset, stopOffset)
}
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