mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-06-28 05:12:13 +02:00
43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package filer2
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import (
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"io"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/chrislusf/seaweedfs/weed/wdclient"
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)
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func StreamContent(masterClient *wdclient.MasterClient, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int) error {
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chunkViews := ViewFromChunks(chunks, offset, size)
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fileId2Url := make(map[string]string)
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for _, chunkView := range chunkViews {
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urlString, err := masterClient.LookupFileId(chunkView.FileId)
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if err != nil {
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glog.V(1).Infof("operation LookupFileId %s failed, err: %v", chunkView.FileId, err)
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return err
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}
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fileId2Url[chunkView.FileId] = urlString
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}
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for _, chunkView := range chunkViews {
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urlString := fileId2Url[chunkView.FileId]
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err := util.ReadUrlAsStream(urlString, chunkView.CipherKey, chunkView.isGzipped, chunkView.IsFullChunk, chunkView.Offset, int(chunkView.Size), func(data []byte) {
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w.Write(data)
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})
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if err != nil {
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glog.V(1).Infof("read %s failed, err: %v", chunkView.FileId, err)
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return err
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}
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}
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return nil
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}
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