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Refactor of xl.PutObjectPart and erasureCreateFile. (#2193)

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* XL: Refactor of xl.PutObjectPart and erasureCreateFile.

* GetCheckSum and AddCheckSum methods for xlMetaV1

* Simple unit test case for erasureCreateFile()
This commit is contained in:
Krishna Srinivas
2016-07-15 03:29:01 +05:30
committed by Harshavardhana
parent af6109f89a
commit b090c7112e
8 changed files with 168 additions and 125 deletions
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30
xl-v1-metadata.go
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@@ -163,6 +163,27 @@ func (m *xlMetaV1) AddObjectPart(partNumber int, partName string, partETag strin
sort.Sort(byObjectPartNumber(m.Parts))
}
// AddCheckSum - add checksum of a part.
func (m *xlMetaV1) AddCheckSum(partName, algorithm, checkSum string) {
for i, sum := range m.Erasure.Checksum {
if sum.Name == partName {
m.Erasure.Checksum[i] = checkSumInfo{partName, "blake2b", checkSum}
return
}
}
m.Erasure.Checksum = append(m.Erasure.Checksum, checkSumInfo{partName, "blake2b", checkSum})
}
// GetCheckSum - get checksum of a part.
func (m *xlMetaV1) GetCheckSum(partName string) (checkSum, algorithm string, err error) {
for _, sum := range m.Erasure.Checksum {
if sum.Name == partName {
return sum.Hash, sum.Algorithm, nil
}
}
return "", "", errUnexpected
}
// ObjectToPartOffset - translate offset of an object to offset of its individual part.
func (m xlMetaV1) ObjectToPartOffset(offset int64) (partIndex int, partOffset int64, err error) {
if offset == 0 {
@@ -187,10 +208,11 @@ func (m xlMetaV1) ObjectToPartOffset(offset int64) (partIndex int, partOffset in
// pickValidXLMeta - picks one valid xlMeta content and returns from a
// slice of xlmeta content. If no value is found this function panics
// and dies.
func pickValidXLMeta(xlMetas []xlMetaV1) xlMetaV1 {
for _, xlMeta := range xlMetas {
if xlMeta.IsValid() {
return xlMeta
func pickValidXLMeta(metaArr []xlMetaV1, modTime time.Time) xlMetaV1 {
// Pick latest valid metadata.
for _, meta := range metaArr {
if meta.IsValid() && meta.Stat.ModTime == modTime {
return meta
}
}
panic("Unable to look for valid XL metadata content")