minio/cmd/format-disk-cache_test.go
Harshavardhana 4e63e0e372 Return appropriate errors API versions changes across REST APIs (#8480)
This PR adds code to appropriately handle versioning issues
that come up quite constantly across our API changes. Currently
we were also routing our requests wrong which sort of made it
harder to write a consistent error handling code to appropriately
reject or honor requests.

This PR potentially fixes issues

 - old mc is used against new minio release which is incompatible
   returns an appropriate for client action.
 - any older servers talking to each other, report appropriate error
 - incompatible peer servers should report error and reject the calls
   with appropriate error
2019-11-04 09:30:59 -08:00

321 lines
8.8 KiB
Go

/*
* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"context"
"os"
"testing"
)
// TestDiskCacheFormat - tests initFormatCache, formatMetaGetFormatBackendCache, formatCacheGetVersion.
func TestDiskCacheFormat(t *testing.T) {
ctx := context.Background()
fsDirs, err := getRandomDisks(1)
if err != nil {
t.Fatal(err)
}
_, err = initFormatCache(ctx, fsDirs)
if err != nil {
t.Fatal(err)
}
// Do the basic sanity checks to check if initFormatCache() did its job.
cacheFormatPath := pathJoin(fsDirs[0], minioMetaBucket, formatConfigFile)
f, err := os.OpenFile(cacheFormatPath, os.O_RDWR|os.O_SYNC, 0)
if err != nil {
t.Fatal(err)
}
defer f.Close()
version, err := formatCacheGetVersion(f)
if err != nil {
t.Fatal(err)
}
if version != formatCacheVersionV2 {
t.Fatalf(`expected: %s, got: %s`, formatCacheVersionV2, version)
}
// Corrupt the format.json file and test the functions.
// formatMetaGetFormatBackendFS, formatFSGetVersion, initFormatFS should return errors.
if err = f.Truncate(0); err != nil {
t.Fatal(err)
}
if _, err = f.WriteString("b"); err != nil {
t.Fatal(err)
}
if _, _, err = loadAndValidateCacheFormat(context.Background(), fsDirs); err == nil {
t.Fatal("expected to fail")
}
// With unknown formatMetaV1.Version formatMetaGetFormatCache, initFormatCache should return error.
if err = f.Truncate(0); err != nil {
t.Fatal(err)
}
// Here we set formatMetaV1.Version to "2"
if _, err = f.WriteString(`{"version":"2","format":"cache","cache":{"version":"1"}}`); err != nil {
t.Fatal(err)
}
if _, _, err = loadAndValidateCacheFormat(context.Background(), fsDirs); err == nil {
t.Fatal("expected to fail")
}
}
// generates a valid format.json for Cache backend.
func genFormatCacheValid() []*formatCacheV2 {
disks := make([]string, 8)
formatConfigs := make([]*formatCacheV2, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV1{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV2
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
return formatConfigs
}
// generates a invalid format.json version for Cache backend.
func genFormatCacheInvalidVersion() []*formatCacheV2 {
disks := make([]string, 8)
formatConfigs := make([]*formatCacheV2, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV1{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV1
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
// Corrupt version numbers.
formatConfigs[0].Version = "2"
formatConfigs[3].Version = "-1"
return formatConfigs
}
// generates a invalid format.json version for Cache backend.
func genFormatCacheInvalidFormat() []*formatCacheV2 {
disks := make([]string, 8)
formatConfigs := make([]*formatCacheV2, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV2{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV1
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
// Corrupt format.
formatConfigs[0].Format = "cach"
formatConfigs[3].Format = "cach"
return formatConfigs
}
// generates a invalid format.json version for Cache backend.
func genFormatCacheInvalidCacheVersion() []*formatCacheV2 {
disks := make([]string, 8)
formatConfigs := make([]*formatCacheV2, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV2{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV1
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
// Corrupt version numbers.
formatConfigs[0].Cache.Version = "10"
formatConfigs[3].Cache.Version = "-1"
return formatConfigs
}
// generates a invalid format.json version for Cache backend.
func genFormatCacheInvalidDisksCount() []*formatCacheV2 {
disks := make([]string, 7)
formatConfigs := make([]*formatCacheV2, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV2{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV2
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
return formatConfigs
}
// generates a invalid format.json Disks for Cache backend.
func genFormatCacheInvalidDisks() []*formatCacheV2 {
disks := make([]string, 8)
formatConfigs := make([]*formatCacheV2, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV1{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV2
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
for index := range disks {
disks[index] = mustGetUUID()
}
// Corrupt Disks entries on disk 6 and disk 8.
formatConfigs[5].Cache.Disks = disks
formatConfigs[7].Cache.Disks = disks
return formatConfigs
}
// generates a invalid format.json This disk UUID for Cache backend.
func genFormatCacheInvalidThis() []*formatCacheV1 {
disks := make([]string, 8)
formatConfigs := make([]*formatCacheV1, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV1{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV2
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
// Make disk 5 and disk 8 have inconsistent disk uuid's.
formatConfigs[4].Cache.This = mustGetUUID()
formatConfigs[7].Cache.This = mustGetUUID()
return formatConfigs
}
// generates a invalid format.json Disk UUID in wrong order for Cache backend.
func genFormatCacheInvalidDisksOrder() []*formatCacheV2 {
disks := make([]string, 8)
formatConfigs := make([]*formatCacheV2, 8)
for index := range disks {
disks[index] = mustGetUUID()
}
for index := range disks {
format := &formatCacheV1{}
format.Version = formatMetaVersion1
format.Format = formatCache
format.Cache.Version = formatCacheVersionV2
format.Cache.This = disks[index]
format.Cache.Disks = disks
formatConfigs[index] = format
}
// Re order disks for failure case.
var disks1 = make([]string, 8)
copy(disks1, disks)
disks1[1], disks1[2] = disks[2], disks[1]
formatConfigs[2].Cache.Disks = disks1
return formatConfigs
}
// Wrapper for calling FormatCache tests - validates
// - valid format
// - unrecognized version number
// - unrecognized format tag
// - unrecognized cache version
// - wrong number of Disks entries
// - invalid This uuid
// - invalid Disks order
func TestFormatCache(t *testing.T) {
formatInputCases := [][]*formatCacheV1{
genFormatCacheValid(),
genFormatCacheInvalidVersion(),
genFormatCacheInvalidFormat(),
genFormatCacheInvalidCacheVersion(),
genFormatCacheInvalidDisksCount(),
genFormatCacheInvalidDisks(),
genFormatCacheInvalidThis(),
genFormatCacheInvalidDisksOrder(),
}
testCases := []struct {
formatConfigs []*formatCacheV1
shouldPass bool
}{
{
formatConfigs: formatInputCases[0],
shouldPass: true,
},
{
formatConfigs: formatInputCases[1],
shouldPass: false,
},
{
formatConfigs: formatInputCases[2],
shouldPass: false,
},
{
formatConfigs: formatInputCases[3],
shouldPass: false,
},
{
formatConfigs: formatInputCases[4],
shouldPass: false,
},
{
formatConfigs: formatInputCases[5],
shouldPass: false,
},
{
formatConfigs: formatInputCases[6],
shouldPass: false,
},
{
formatConfigs: formatInputCases[7],
shouldPass: false,
},
}
for i, testCase := range testCases {
err := validateCacheFormats(context.Background(), false, testCase.formatConfigs)
if err != nil && testCase.shouldPass {
t.Errorf("Test %d: Expected to pass but failed with %s", i+1, err)
}
if err == nil && !testCase.shouldPass {
t.Errorf("Test %d: Expected to fail but passed instead", i+1)
}
}
}