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Merge pull request #921 from lunixbochs/sendfile

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make zero-copy GetObject possible via sendfile
This commit is contained in:
Ben McClelland
2024-10-28 15:41:10 -07:00
committed by GitHub
parent a53667cd75 e7a6ce214b
commit 2c1d0b362c
1 changed files with 7 additions and 2 deletions
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backend/posix/posix.go
+7 -2
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@@ -2931,7 +2931,12 @@ func (p *Posix) GetObject(_ context.Context, input *s3.GetObjectInput) (*s3.GetO
return nil, fmt.Errorf("open object: %w", err)
}
rdr := io.NewSectionReader(f, startOffset, length)
// using an os.File allows zero-copy sendfile via io.Copy(os.File, net.Conn)
var body io.ReadCloser = f
if startOffset != 0 || length != objSize {
rdr := io.NewSectionReader(f, startOffset, length)
body = &backend.FileSectionReadCloser{R: rdr, F: f}
}
return &s3.GetObjectOutput{
AcceptRanges: &acceptRange,
@@ -2945,7 +2950,7 @@ func (p *Posix) GetObject(_ context.Context, input *s3.GetObjectInput) (*s3.GetO
ContentRange: &contentRange,
StorageClass: types.StorageClassStandard,
VersionId: &versionId,
Body: &backend.FileSectionReadCloser{R: rdr, F: f},
Body: body,
}, nil
}