1 files changed, 112 insertions, 0 deletions
diff --git a/weed/filesys/dirty_pages_temp_file.go b/weed/filesys/dirty_pages_temp_file.go
new file mode 100644
index 000000000..12f5b5159
--- /dev/null
+++ b/weed/filesys/dirty_pages_temp_file.go
@@ -0,0 +1,112 @@
+package filesys
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filesys/page_writer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"io"
+	"os"
+	"sync"
+	"time"
+)
+
+type TempFileDirtyPages struct {
+	f              *File
+	writeWaitGroup sync.WaitGroup
+	pageAddLock    sync.Mutex
+	chunkAddLock   sync.Mutex
+	lastErr        error
+	collection     string
+	replication    string
+	chunkedFile    *page_writer.ChunkedFileWriter
+}
+
+func newTempFileDirtyPages(file *File, chunkSize int64) *TempFileDirtyPages {
+
+	tempFile := &TempFileDirtyPages{
+		f:           file,
+		chunkedFile: page_writer.NewChunkedFileWriter(file.wfs.option.getTempFilePageDir(), chunkSize),
+	}
+
+	return tempFile
+}
+
+func (pages *TempFileDirtyPages) AddPage(offset int64, data []byte) {
+
+	pages.pageAddLock.Lock()
+	defer pages.pageAddLock.Unlock()
+
+	glog.V(4).Infof("%v tempfile AddPage [%d, %d)", pages.f.fullpath(), offset, offset+int64(len(data)))
+	if _, err := pages.chunkedFile.WriteAt(data, offset); err != nil {
+		pages.lastErr = err
+	}
+
+	return
+}
+
+func (pages *TempFileDirtyPages) FlushData() error {
+	pages.saveChunkedFileToStorage()
+	pages.writeWaitGroup.Wait()
+	if pages.lastErr != nil {
+		return fmt.Errorf("flush data: %v", pages.lastErr)
+	}
+	pages.chunkedFile.Reset()
+	return nil
+}
+
+func (pages *TempFileDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
+	return pages.chunkedFile.ReadDataAt(data, startOffset)
+}
+
+func (pages *TempFileDirtyPages) GetStorageOptions() (collection, replication string) {
+	return pages.collection, pages.replication
+}
+
+func (pages *TempFileDirtyPages) saveChunkedFileToStorage() {
+
+	pages.chunkedFile.ProcessEachInterval(func(file *os.File, logicChunkIndex page_writer.LogicChunkIndex, interval *page_writer.ChunkWrittenInterval) {
+		reader := page_writer.NewFileIntervalReader(pages.chunkedFile, logicChunkIndex, interval)
+		pages.saveChunkedFileIntevalToStorage(reader, int64(logicChunkIndex)*pages.chunkedFile.ChunkSize+interval.StartOffset, interval.Size())
+	})
+
+}
+
+func (pages *TempFileDirtyPages) saveChunkedFileIntevalToStorage(reader io.Reader, offset int64, size int64) {
+
+	mtime := time.Now().UnixNano()
+	pages.writeWaitGroup.Add(1)
+	writer := func() {
+		defer pages.writeWaitGroup.Done()
+
+		chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath())(reader, pages.f.Name, offset)
+		if err != nil {
+			glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.f.fullpath(), offset, offset+size, err)
+			pages.lastErr = err
+			return
+		}
+		chunk.Mtime = mtime
+		pages.collection, pages.replication = collection, replication
+		pages.chunkAddLock.Lock()
+		defer pages.chunkAddLock.Unlock()
+		pages.f.addChunks([]*filer_pb.FileChunk{chunk})
+		glog.V(3).Infof("%s saveToStorage %s [%d,%d)", pages.f.fullpath(), chunk.FileId, offset, offset+size)
+	}
+
+	if pages.f.wfs.concurrentWriters != nil {
+		pages.f.wfs.concurrentWriters.Execute(writer)
+	} else {
+		go writer()
+	}
+
+}
+
+func (pages TempFileDirtyPages) Destroy() {
+	pages.chunkedFile.Reset()
+}
+
+func (pages *TempFileDirtyPages) LockForRead(startOffset, stopOffset int64) {
+}
+
+func (pages *TempFileDirtyPages) UnlockForRead(startOffset, stopOffset int64) {
+}