diff options
Diffstat (limited to 'weed/filer/stream.go')
| -rw-r--r-- | weed/filer/stream.go | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/weed/filer/stream.go b/weed/filer/stream.go index 075204b79..661a210ea 100644 --- a/weed/filer/stream.go +++ b/weed/filer/stream.go @@ -3,6 +3,7 @@ package filer import ( "bytes" "fmt" + "golang.org/x/sync/errgroup" "io" "math" "strings" @@ -13,9 +14,9 @@ import ( "github.com/chrislusf/seaweedfs/weed/wdclient" ) -func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int64) error { +func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int64, isCheck bool) error { - // fmt.Printf("start to stream content for chunks: %+v\n", chunks) + glog.V(9).Infof("start to stream content for chunks: %+v\n", chunks) chunkViews := ViewFromChunks(masterClient.GetLookupFileIdFunction(), chunks, offset, size) fileId2Url := make(map[string][]string) @@ -26,19 +27,33 @@ func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, c if err != nil { glog.V(1).Infof("operation LookupFileId %s failed, err: %v", chunkView.FileId, err) return err + } else if len(urlStrings) == 0 { + glog.Errorf("operation LookupFileId %s failed, err: urls not found", chunkView.FileId) + return fmt.Errorf("operation LookupFileId %s failed, err: urls not found", chunkView.FileId) } fileId2Url[chunkView.FileId] = urlStrings } + if isCheck { + // Pre-check all chunkViews urls + gErr := new(errgroup.Group) + CheckAllChunkViews(chunkViews, &fileId2Url, gErr) + if err := gErr.Wait(); err != nil { + glog.Errorf("check all chunks: %v", err) + return fmt.Errorf("check all chunks: %v", err) + } + return nil + } + for _, chunkView := range chunkViews { urlStrings := fileId2Url[chunkView.FileId] - data, err := retriedFetchChunkData(urlStrings, chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size)) if err != nil { glog.Errorf("read chunk: %v", err) return fmt.Errorf("read chunk: %v", err) } + _, err = w.Write(data) if err != nil { glog.Errorf("write chunk: %v", err) @@ -50,6 +65,17 @@ func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, c } +func CheckAllChunkViews(chunkViews []*ChunkView, fileId2Url *map[string][]string, gErr *errgroup.Group) { + for _, chunkView := range chunkViews { + urlStrings := (*fileId2Url)[chunkView.FileId] + glog.V(9).Infof("Check chunk: %+v\n url: %v", chunkView, urlStrings) + gErr.Go(func() error { + _, err := retriedFetchChunkData(urlStrings, chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size)) + return err + }) + } +} + // ---------------- ReadAllReader ---------------------------------- func ReadAll(masterClient *wdclient.MasterClient, chunks []*filer_pb.FileChunk) ([]byte, error) { @@ -181,7 +207,7 @@ func (c *ChunkStreamReader) fetchChunkToBuffer(chunkView *ChunkView) error { var buffer bytes.Buffer var shouldRetry bool for _, urlString := range urlStrings { - shouldRetry, err = util.FastReadUrlAsStream(urlString+"?readDeleted=true", chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size), func(data []byte) { + shouldRetry, err = util.ReadUrlAsStream(urlString, chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size), func(data []byte) { buffer.Write(data) }) if !shouldRetry { |