working

weed/filesys/dirty_pages_mem_chunk.go

@@ -0,0 +1,99 @@
+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"
+	"sync"
+	"time"
+)
+
+type MemoryChunkPages struct {
+	f              *File
+	writeWaitGroup sync.WaitGroup
+	chunkAddLock   sync.Mutex
+	lastErr        error
+	collection     string
+	replication    string
+	uploadPipeline *page_writer.UploadPipeline
+}
+
+func newMemoryChunkPages(file *File, chunkSize int64) *MemoryChunkPages {
+
+	dirtyPages := &MemoryChunkPages{
+		f: file,
+	}
+
+	dirtyPages.uploadPipeline = page_writer.NewUploadPipeline(
+		file.wfs.concurrentWriters, chunkSize, dirtyPages.saveChunkedFileIntevalToStorage)
+
+	return dirtyPages
+}
+
+func (pages *MemoryChunkPages) AddPage(offset int64, data []byte) {
+
+	glog.V(4).Infof("%v memory AddPage [%d, %d)", pages.f.fullpath(), offset, offset+int64(len(data)))
+	pages.uploadPipeline.SaveDataAt(data, offset)
+
+	return
+}
+
+func (pages *MemoryChunkPages) FlushData() error {
+	pages.saveChunkedFileToStorage()
+	pages.writeWaitGroup.Wait()
+	if pages.lastErr != nil {
+		return fmt.Errorf("flush data: %v", pages.lastErr)
+	}
+	return nil
+}
+
+func (pages *MemoryChunkPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
+	return pages.uploadPipeline.MaybeReadDataAt(data, startOffset)
+}
+
+func (pages *MemoryChunkPages) GetStorageOptions() (collection, replication string) {
+	return pages.collection, pages.replication
+}
+
+func (pages *MemoryChunkPages) saveChunkedFileToStorage() {
+
+	pages.uploadPipeline.FlushAll()
+
+}
+
+func (pages *MemoryChunkPages) saveChunkedFileIntevalToStorage(reader io.Reader, offset int64, size int64, cleanupFn func()) {
+
+	mtime := time.Now().UnixNano()
+	pages.writeWaitGroup.Add(1)
+	writer := func() {
+		defer pages.writeWaitGroup.Done()
+		defer cleanupFn()
+
+		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()
+		pages.f.addChunks([]*filer_pb.FileChunk{chunk})
+		glog.V(3).Infof("%s saveToStorage %s [%d,%d)", pages.f.fullpath(), chunk.FileId, offset, offset+size)
+		pages.chunkAddLock.Unlock()
+
+	}
+
+	if pages.f.wfs.concurrentWriters != nil {
+		pages.f.wfs.concurrentWriters.Execute(writer)
+	} else {
+		go writer()
+	}
+
+}
+
+func (pages MemoryChunkPages) Destroy() {
+	pages.uploadPipeline.Shutdown()
+}