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@ -3,6 +3,7 @@ package filer |
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import ( |
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"bytes" |
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"fmt" |
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"golang.org/x/sync/errgroup" |
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"io" |
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"math" |
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"strings" |
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@ -13,7 +14,7 @@ import ( |
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"github.com/chrislusf/seaweedfs/weed/wdclient" |
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) |
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func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int64) error { |
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func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int64, isCheck bool) error { |
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glog.V(9).Infof("start to stream content for chunks: %+v\n", chunks) |
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chunkViews := ViewFromChunks(masterClient.GetLookupFileIdFunction(), chunks, offset, size) |
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@ -33,11 +34,29 @@ func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, c |
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fileId2Url[chunkView.FileId] = urlStrings |
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} |
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if isCheck { |
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// Pre-check all chunkViews urls
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gErr := new(errgroup.Group) |
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CheckAllChunkViews(chunkViews, &fileId2Url, gErr) |
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if err := gErr.Wait(); err != nil { |
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glog.Errorf("check all chunks: %v", err) |
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return fmt.Errorf("check all chunks: %v", err) |
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} |
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return nil |
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} |
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for _, chunkView := range chunkViews { |
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urlStrings := fileId2Url[chunkView.FileId] |
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data, err := retriedFetchChunkData(urlStrings, chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size)) |
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data, err := retriedFetchChunkData( |
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urlStrings, |
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chunkView.CipherKey, |
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chunkView.IsGzipped, |
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chunkView.IsFullChunk(), |
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false, |
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chunkView.Offset, |
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int(chunkView.Size), |
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) |
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if err != nil { |
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glog.Errorf("read chunk: %v", err) |
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return fmt.Errorf("read chunk: %v", err) |
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@ -54,6 +73,24 @@ func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, c |
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} |
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func CheckAllChunkViews(chunkViews []*ChunkView, fileId2Url *map[string][]string, gErr *errgroup.Group) { |
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for _, chunkView := range chunkViews { |
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urlStrings := (*fileId2Url)[chunkView.FileId] |
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glog.V(9).Infof("Check chunk: %+v\n url: %v", chunkView, urlStrings) |
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gErr.Go(func() error { |
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_, err := retriedFetchChunkData( |
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urlStrings, |
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chunkView.CipherKey, |
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chunkView.IsGzipped, |
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chunkView.IsFullChunk(), |
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true, |
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chunkView.Offset, |
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int(chunkView.Size)) |
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return err |
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}) |
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} |
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} |
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// ---------------- ReadAllReader ----------------------------------
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func ReadAll(masterClient *wdclient.MasterClient, chunks []*filer_pb.FileChunk) ([]byte, error) { |
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@ -73,7 +110,7 @@ func ReadAll(masterClient *wdclient.MasterClient, chunks []*filer_pb.FileChunk) |
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return nil, err |
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} |
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data, err := retriedFetchChunkData(urlStrings, chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size)) |
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data, err := retriedFetchChunkData(urlStrings, chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), false, chunkView.Offset, int(chunkView.Size)) |
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if err != nil { |
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return nil, err |
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} |
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