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turn-off md5sum for SSE-KMS/SSE-C as optimization for multipart (#19106)

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only enable md5sum if explicitly asked by the client, otherwise
its not necessary to compute md5sum when SSE-KMS/SSE-C is enabled.

this is continuation of #17958
This commit is contained in:
Harshavardhana 2024-02-22 04:24:11 -08:00 committed by GitHub
parent 53aa8f5650
commit c32f699105
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1 changed files with 8 additions and 1 deletions
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9
cmd/object-multipart-handlers.go
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@ -729,13 +729,20 @@ func (api objectAPIHandlers) PutObjectPartHandler(w http.ResponseWriter, r *http
sha256hex = ""
}
var forceMD5 []byte
// Optimization: If SSE-KMS and SSE-C did not request Content-Md5. Use uuid as etag. Optionally enable this also
// for server that is started with `--no-compat`.
if !etag.ContentMD5Requested(r.Header) && (crypto.S3KMS.IsEncrypted(mi.UserDefined) || crypto.SSEC.IsRequested(r.Header) || !globalServerCtxt.StrictS3Compat) {
forceMD5 = mustGetUUIDBytes()
}
hashReader, err := hash.NewReaderWithOpts(ctx, reader, hash.Options{
Size: size,
MD5Hex: md5hex,
SHA256Hex: sha256hex,
ActualSize: actualSize,
DisableMD5: false,
ForceMD5: nil,
ForceMD5: forceMD5,
})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)