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read from alternative replica

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related to https://github.com/chrislusf/seaweedfs/issues/1512
This commit is contained in:
Chris Lu
2020-10-07 22:49:04 -07:00
parent da4edf3651
commit a8624c2e4f
12 changed files with 185 additions and 150 deletions
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11
weed/replication/sink/s3sink/s3_write.go
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@@ -157,11 +157,18 @@ func (s3sink *S3Sink) uploadPartCopy(key, uploadId string, partId int64, copySou
}
func (s3sink *S3Sink) buildReadSeeker(chunk *filer.ChunkView) (io.ReadSeeker, error) {
fileUrl, err := s3sink.filerSource.LookupFileId(chunk.FileId)
fileUrls, err := s3sink.filerSource.LookupFileId(chunk.FileId)
if err != nil {
return nil, err
}
buf := make([]byte, chunk.Size)
util.ReadUrl(fileUrl, nil, false, false, chunk.Offset, int(chunk.Size), buf)
for _, fileUrl := range fileUrls {
_, err = util.ReadUrl(fileUrl, nil, false, false, chunk.Offset, int(chunk.Size), buf)
if err != nil {
glog.V(1).Infof("read from %s: %v", fileUrl, err)
} else {
break
}
}
return bytes.NewReader(buf), nil
}