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fix: return error for unexpected quorum in pickValidFileInfo (#12363)

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Harshavardhana 2021-05-24 18:31:56 -07:00 committed by GitHub
parent abd32065aa
commit cacdeca8cc
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 37 additions and 17 deletions
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16
cmd/erasure-metadata.go
View File

@ -239,7 +239,11 @@ func (fi FileInfo) ObjectToPartOffset(ctx context.Context, offset int64) (partIn
return 0, 0, InvalidRange{}
}
func findFileInfoInQuorum(ctx context.Context, metaArr []FileInfo, modTime time.Time, dataDir string, quorum int) (xmv FileInfo, e error) {
func findFileInfoInQuorum(ctx context.Context, metaArr []FileInfo, modTime time.Time, dataDir string, quorum int) (FileInfo, error) {
// with less quorum return error.
if quorum < 2 {
return FileInfo{}, errErasureReadQuorum
}
metaHashes := make([]string, len(metaArr))
h := sha256.New()
for i, meta := range metaArr {
@ -278,16 +282,18 @@ func findFileInfoInQuorum(ctx context.Context, metaArr []FileInfo, modTime time.
for i, hash := range metaHashes {
if hash == maxHash {
if metaArr[i].IsValid() {
return metaArr[i], nil
}
}
}
return FileInfo{}, errErasureReadQuorum
}
// pickValidFileInfo - picks one valid FileInfo content and returns from a
// slice of FileInfo.
func pickValidFileInfo(ctx context.Context, metaArr []FileInfo, modTime time.Time, dataDir string, quorum int) (xmv FileInfo, e error) {
func pickValidFileInfo(ctx context.Context, metaArr []FileInfo, modTime time.Time, dataDir string, quorum int) (FileInfo, error) {
return findFileInfoInQuorum(ctx, metaArr, modTime, dataDir, quorum)
}
@ -329,12 +335,16 @@ func objectQuorumFromMeta(ctx context.Context, partsMetaData []FileInfo, errs []
return 0, 0, err
}
dataBlocks := latestFileInfo.Erasure.DataBlocks
if !latestFileInfo.IsValid() {
return 0, 0, errErasureReadQuorum
}
parityBlocks := globalStorageClass.GetParityForSC(latestFileInfo.Metadata[xhttp.AmzStorageClass])
if parityBlocks <= 0 {
parityBlocks = defaultParityCount
}
dataBlocks := len(partsMetaData) - parityBlocks
writeQuorum := dataBlocks
if dataBlocks == parityBlocks {
writeQuorum++

12
cmd/erasure-metadata_test.go
View File

@ -180,25 +180,35 @@ func TestFindFileInfoInQuorum(t *testing.T) {
modTime time.Time
dataDir string
expectedErr error
expectedQuorum int
}{
{
fis: getNFInfo(16, 16, 1603863445, "36a21454-a2ca-11eb-bbaa-93a81c686f21"),
modTime: time.Unix(1603863445, 0),
dataDir: "36a21454-a2ca-11eb-bbaa-93a81c686f21",
expectedErr: nil,
expectedQuorum: 8,
},
{
fis: getNFInfo(16, 7, 1603863445, "36a21454-a2ca-11eb-bbaa-93a81c686f21"),
modTime: time.Unix(1603863445, 0),
dataDir: "36a21454-a2ca-11eb-bbaa-93a81c686f21",
expectedErr: errErasureReadQuorum,
expectedQuorum: 8,
},
{
fis: getNFInfo(16, 16, 1603863445, "36a21454-a2ca-11eb-bbaa-93a81c686f21"),
modTime: time.Unix(1603863445, 0),
dataDir: "36a21454-a2ca-11eb-bbaa-93a81c686f21",
expectedErr: errErasureReadQuorum,
expectedQuorum: 0,
},
}
for _, test := range tests {
test := test
t.Run("", func(t *testing.T) {
_, err := findFileInfoInQuorum(context.Background(), test.fis, test.modTime, test.dataDir, 8)
_, err := findFileInfoInQuorum(context.Background(), test.fis, test.modTime, test.dataDir, test.expectedQuorum)
if err != test.expectedErr {
t.Errorf("Expected %s, got %s", test.expectedErr, err)
}