minio/cmd/xl-storage-format-v2_test.go

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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"bytes"
"testing"
"time"
"github.com/google/uuid"
xhttp "github.com/minio/minio/cmd/http"
"github.com/minio/minio/pkg/bucket/lifecycle"
)
func TestXLV2FormatData(t *testing.T) {
failOnErr := func(err error) {
t.Helper()
if err != nil {
t.Fatal(err)
}
}
data := []byte("some object data")
data2 := []byte("some other object data")
xl := xlMetaV2{}
fi := FileInfo{
Volume: "volume",
Name: "object-name",
VersionID: "756100c6-b393-4981-928a-d49bbc164741",
IsLatest: true,
Deleted: false,
TransitionStatus: "",
DataDir: "bffea160-ca7f-465f-98bc-9b4f1c3ba1ef",
XLV1: false,
ModTime: time.Now(),
Size: 0,
Mode: 0,
Metadata: nil,
Parts: nil,
Erasure: ErasureInfo{
Algorithm: ReedSolomon.String(),
DataBlocks: 4,
ParityBlocks: 2,
BlockSize: 10000,
Index: 1,
Distribution: []int{1, 2, 3, 4, 5, 6, 7, 8},
Checksums: []ChecksumInfo{{
PartNumber: 1,
Algorithm: HighwayHash256S,
Hash: nil,
}},
},
MarkDeleted: false,
DeleteMarkerReplicationStatus: "",
VersionPurgeStatus: "",
Data: data,
NumVersions: 1,
SuccessorModTime: time.Time{},
}
failOnErr(xl.AddVersion(fi))
fi.VersionID = mustGetUUID()
fi.DataDir = mustGetUUID()
fi.Data = data2
failOnErr(xl.AddVersion(fi))
serialized, err := xl.AppendTo(nil)
failOnErr(err)
// Roundtrip data
var xl2 xlMetaV2
failOnErr(xl2.Load(serialized))
// We should have one data entry
list, err := xl2.data.list()
failOnErr(err)
if len(list) != 2 {
t.Fatalf("want 1 entry, got %d", len(list))
}
if !bytes.Equal(xl2.data.find("756100c6-b393-4981-928a-d49bbc164741"), data) {
t.Fatal("Find data returned", xl2.data.find("756100c6-b393-4981-928a-d49bbc164741"))
}
if !bytes.Equal(xl2.data.find(fi.VersionID), data2) {
t.Fatal("Find data returned", xl2.data.find(fi.VersionID))
}
// Remove entry
xl2.data.remove(fi.VersionID)
failOnErr(xl2.data.validate())
if xl2.data.find(fi.VersionID) != nil {
t.Fatal("Data was not removed:", xl2.data.find(fi.VersionID))
}
if xl2.data.entries() != 1 {
t.Fatal("want 1 entry, got", xl2.data.entries())
}
// Re-add
xl2.data.replace(fi.VersionID, fi.Data)
failOnErr(xl2.data.validate())
if xl2.data.entries() != 2 {
t.Fatal("want 2 entries, got", xl2.data.entries())
}
// Replace entry
xl2.data.replace("756100c6-b393-4981-928a-d49bbc164741", data2)
failOnErr(xl2.data.validate())
if xl2.data.entries() != 2 {
t.Fatal("want 2 entries, got", xl2.data.entries())
}
if !bytes.Equal(xl2.data.find("756100c6-b393-4981-928a-d49bbc164741"), data2) {
t.Fatal("Find data returned", xl2.data.find("756100c6-b393-4981-928a-d49bbc164741"))
}
if !xl2.data.rename("756100c6-b393-4981-928a-d49bbc164741", "new-key") {
t.Fatal("old key was not found")
}
failOnErr(xl2.data.validate())
if !bytes.Equal(xl2.data.find("new-key"), data2) {
t.Fatal("Find data returned", xl2.data.find("756100c6-b393-4981-928a-d49bbc164741"))
}
if xl2.data.entries() != 2 {
t.Fatal("want 2 entries, got", xl2.data.entries())
}
if !bytes.Equal(xl2.data.find(fi.VersionID), data2) {
t.Fatal("Find data returned", xl2.data.find(fi.DataDir))
}
// Test trimmed
xl2 = xlMetaV2{}
trimmed := xlMetaV2TrimData(serialized)
failOnErr(xl2.Load(trimmed))
if len(xl2.data) != 0 {
t.Fatal("data, was not trimmed, bytes left:", len(xl2.data))
}
// Corrupt metadata, last 5 bytes is the checksum, so go a bit further back.
trimmed[len(trimmed)-10] += 10
if err := xl2.Load(trimmed); err == nil {
t.Fatal("metadata corruption not detected")
}
}
// TestUsesDataDir tests xlMetaV2.UsesDataDir
func TestUsesDataDir(t *testing.T) {
vID := uuid.New()
dataDir := uuid.New()
transitioned := make(map[string][]byte)
transitioned[ReservedMetadataPrefixLower+TransitionStatus] = []byte(lifecycle.TransitionComplete)
toBeRestored := make(map[string]string)
toBeRestored[xhttp.AmzRestore] = ongoingRestoreObj().String()
restored := make(map[string]string)
restored[xhttp.AmzRestore] = completedRestoreObj(time.Now().UTC().Add(time.Hour)).String()
restoredExpired := make(map[string]string)
restoredExpired[xhttp.AmzRestore] = completedRestoreObj(time.Now().UTC().Add(-time.Hour)).String()
testCases := []struct {
xlmeta xlMetaV2Object
uses bool
}{
{ // transitioned object version
xlmeta: xlMetaV2Object{
VersionID: vID,
DataDir: dataDir,
MetaSys: transitioned,
},
uses: false,
},
{ // to be restored (requires object version to be transitioned)
xlmeta: xlMetaV2Object{
VersionID: vID,
DataDir: dataDir,
MetaSys: transitioned,
MetaUser: toBeRestored,
},
uses: false,
},
{ // restored object version (requires object version to be transitioned)
xlmeta: xlMetaV2Object{
VersionID: vID,
DataDir: dataDir,
MetaSys: transitioned,
MetaUser: restored,
},
uses: true,
},
{ // restored object version expired an hour back (requires object version to be transitioned)
xlmeta: xlMetaV2Object{
VersionID: vID,
DataDir: dataDir,
MetaSys: transitioned,
MetaUser: restoredExpired,
},
uses: false,
},
{ // object version with no ILM applied
xlmeta: xlMetaV2Object{
VersionID: vID,
DataDir: dataDir,
},
uses: true,
},
}
for i, tc := range testCases {
if got := tc.xlmeta.UsesDataDir(); got != tc.uses {
t.Fatalf("Test %d: Expected %v but got %v for %v", i+1, tc.uses, got, tc.xlmeta)
}
}
}
func TestDeleteVersionWithSharedDataDir(t *testing.T) {
failOnErr := func(i int, err error) {
t.Helper()
if err != nil {
t.Fatalf("Test %d: failed with %v", i, err)
}
}
data := []byte("some object data")
data2 := []byte("some other object data")
xl := xlMetaV2{}
fi := FileInfo{
Volume: "volume",
Name: "object-name",
VersionID: "756100c6-b393-4981-928a-d49bbc164741",
IsLatest: true,
Deleted: false,
TransitionStatus: "",
DataDir: "bffea160-ca7f-465f-98bc-9b4f1c3ba1ef",
XLV1: false,
ModTime: time.Now(),
Size: 0,
Mode: 0,
Metadata: nil,
Parts: nil,
Erasure: ErasureInfo{
Algorithm: ReedSolomon.String(),
DataBlocks: 4,
ParityBlocks: 2,
BlockSize: 10000,
Index: 1,
Distribution: []int{1, 2, 3, 4, 5, 6, 7, 8},
Checksums: []ChecksumInfo{{
PartNumber: 1,
Algorithm: HighwayHash256S,
Hash: nil,
}},
},
MarkDeleted: false,
DeleteMarkerReplicationStatus: "",
VersionPurgeStatus: "",
Data: data,
NumVersions: 1,
SuccessorModTime: time.Time{},
}
d0, d1, d2 := mustGetUUID(), mustGetUUID(), mustGetUUID()
testCases := []struct {
versionID string
dataDir string
data []byte
shares int
transitionStatus string
restoreObjStatus string
expireRestored bool
expectedDataDir string
}{
{ // object versions with inlined data don't count towards shared data directory
versionID: mustGetUUID(),
dataDir: d0,
data: data,
shares: 0,
},
{ // object versions with inlined data don't count towards shared data directory
versionID: mustGetUUID(),
dataDir: d1,
data: data2,
shares: 0,
},
{ // transitioned object version don't count towards shared data directory
versionID: mustGetUUID(),
dataDir: d2,
shares: 3,
transitionStatus: lifecycle.TransitionComplete,
},
{ // transitioned object version with an ongoing restore-object request.
versionID: mustGetUUID(),
dataDir: d2,
shares: 3,
transitionStatus: lifecycle.TransitionComplete,
restoreObjStatus: ongoingRestoreObj().String(),
},
// The following versions are on-disk.
{ // restored object version expiring 10 hours from now.
versionID: mustGetUUID(),
dataDir: d2,
shares: 2,
transitionStatus: lifecycle.TransitionComplete,
restoreObjStatus: completedRestoreObj(time.Now().Add(10 * time.Hour)).String(),
expireRestored: true,
},
{
versionID: mustGetUUID(),
dataDir: d2,
shares: 2,
},
{
versionID: mustGetUUID(),
dataDir: d2,
shares: 2,
expectedDataDir: d2,
},
}
var fileInfos []FileInfo
for i, tc := range testCases {
fi := fi
fi.VersionID = tc.versionID
fi.DataDir = tc.dataDir
fi.Data = tc.data
if tc.data == nil {
fi.Size = 42 // to prevent inlining of data
}
if tc.restoreObjStatus != "" {
fi.Metadata = map[string]string{
xhttp.AmzRestore: tc.restoreObjStatus,
}
}
fi.TransitionStatus = tc.transitionStatus
failOnErr(i+1, xl.AddVersion(fi))
fi.ExpireRestored = tc.expireRestored
fileInfos = append(fileInfos, fi)
}
for i, tc := range testCases {
version := xl.Versions[i]
if actual := xl.SharedDataDirCount(version.ObjectV2.VersionID, version.ObjectV2.DataDir); actual != tc.shares {
t.Fatalf("Test %d: For %#v, expected sharers of data directory %d got %d", i+1, version.ObjectV2, tc.shares, actual)
}
}
// Deleting fileInfos[4].VersionID, fileInfos[5].VersionID should return empty data dir; there are other object version sharing the data dir.
// Subsequently deleting fileInfos[6].versionID should return fileInfos[6].dataDir since there are no other object versions sharing this data dir.
count := len(testCases)
for i := 4; i < len(testCases); i++ {
tc := testCases[i]
dataDir, _, err := xl.DeleteVersion(fileInfos[i])
failOnErr(count+1, err)
if dataDir != tc.expectedDataDir {
t.Fatalf("Expected %s but got %s", tc.expectedDataDir, dataDir)
}
count++
}
}