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minio/cmd/posix_test.go

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/*
* MinIO Cloud Storage, (C) 2016, 2017 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 (
"bytes"
"crypto/rand"
"fmt"
"io"
"io/ioutil"
"os"
slashpath "path"
"runtime"
"strings"
"syscall"
"testing"
"github.com/minio/minio/pkg/disk"
)
// Tests validate volume name.
func TestIsValidVolname(t *testing.T) {
testCases := []struct {
volName string
shouldPass bool
}{
// Cases which should pass the test.
// passing in valid bucket names.
{"lol", true},
{"1-this-is-valid", true},
{"1-this-too-is-valid-1", true},
{"this.works.too.1", true},
{"1234567", true},
{"123", true},
{"s3-eu-west-1.amazonaws.com", true},
{"ideas-are-more-powerful-than-guns", true},
{"testbucket", true},
{"1bucket", true},
{"bucket1", true},
{"$this-is-not-valid-too", true},
{"contains-$-dollar", true},
{"contains-^-carrot", true},
{"contains-$-dollar", true},
{"contains-$-dollar", true},
{".starts-with-a-dot", true},
{"ends-with-a-dot.", true},
{"ends-with-a-dash-", true},
{"-starts-with-a-dash", true},
{"THIS-BEINGS-WITH-UPPERCASe", true},
{"tHIS-ENDS-WITH-UPPERCASE", true},
{"ThisBeginsAndEndsWithUpperCase", true},
{"una ñina", true},
{"lalalallalallalalalallalallalala-theString-size-is-greater-than-64", true},
// cases for which test should fail.
// passing invalid bucket names.
{"", false},
{SlashSeparator, false},
{"a", false},
{"ab", false},
{"ab/", true},
{"......", true},
}
for i, testCase := range testCases {
isValidVolname := isValidVolname(testCase.volName)
if testCase.shouldPass && !isValidVolname {
t.Errorf("Test case %d: Expected \"%s\" to be a valid bucket name", i+1, testCase.volName)
}
if !testCase.shouldPass && isValidVolname {
t.Errorf("Test case %d: Expected bucket name \"%s\" to be invalid", i+1, testCase.volName)
}
}
}
// creates a temp dir and sets up posix layer.
// returns posix layer, temp dir path to be used for the purpose of tests.
func newPosixTestSetup() (StorageAPI, string, error) {
diskPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
if err != nil {
return nil, "", err
}
// Initialize a new posix layer.
storage, err := newPosix(diskPath)
if err != nil {
return nil, "", err
}
err = storage.MakeVol(minioMetaBucket)
if err != nil {
return nil, "", err
}
// Create a sample format.json file
err = storage.WriteAll(minioMetaBucket, formatConfigFile, bytes.NewBufferString(`{"version":"1","format":"xl","id":"592a41c2-b7cc-4130-b883-c4b5cb15965b","xl":{"version":"3","this":"da017d62-70e3-45f1-8a1a-587707e69ad1","sets":[["e07285a6-8c73-4962-89c6-047fb939f803","33b8d431-482d-4376-b63c-626d229f0a29","cff6513a-4439-4dc1-bcaa-56c9e880c352","da017d62-70e3-45f1-8a1a-587707e69ad1","9c9f21d5-1f15-4737-bce6-835faa0d9626","0a59b346-1424-4fc2-9fa2-a2e80541d0c1","7924a3dc-b69a-4971-9a2e-014966d6aebb","4d2b8dd9-4e48-444b-bdca-c89194b26042"]],"distributionAlgo":"CRCMOD"}}`))
if err != nil {
return nil, "", err
}
return &posixDiskIDCheck{storage: storage, diskID: "da017d62-70e3-45f1-8a1a-587707e69ad1"}, diskPath, nil
}
// createPermDeniedFile - creates temporary directory and file with path '/mybucket/myobject'
func createPermDeniedFile(t *testing.T) (permDeniedDir string) {
var errMsg string
defer func() {
if errMsg == "" {
return
}
if permDeniedDir != "" {
os.RemoveAll(permDeniedDir)
}
t.Fatalf(errMsg)
}()
var err error
if permDeniedDir, err = ioutil.TempDir(globalTestTmpDir, "minio-"); err != nil {
errMsg = fmt.Sprintf("Unable to create temporary directory. %v", err)
return permDeniedDir
}
if err = os.Mkdir(slashpath.Join(permDeniedDir, "mybucket"), 0775); err != nil {
errMsg = fmt.Sprintf("Unable to create temporary directory %v. %v", slashpath.Join(permDeniedDir, "mybucket"), err)
return permDeniedDir
}
if err = ioutil.WriteFile(slashpath.Join(permDeniedDir, "mybucket", "myobject"), []byte(""), 0400); err != nil {
errMsg = fmt.Sprintf("Unable to create file %v. %v", slashpath.Join(permDeniedDir, "mybucket", "myobject"), err)
return permDeniedDir
}
if err = os.Chmod(slashpath.Join(permDeniedDir, "mybucket"), 0400); err != nil {
errMsg = fmt.Sprintf("Unable to change permission to temporary directory %v. %v", slashpath.Join(permDeniedDir, "mybucket"), err)
return permDeniedDir
}
if err = os.Chmod(permDeniedDir, 0400); err != nil {
errMsg = fmt.Sprintf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
return permDeniedDir
}
// removePermDeniedFile - removes temporary directory and file with path '/mybucket/myobject'
func removePermDeniedFile(permDeniedDir string) {
if err := os.Chmod(permDeniedDir, 0775); err == nil {
if err = os.Chmod(slashpath.Join(permDeniedDir, "mybucket"), 0775); err == nil {
os.RemoveAll(permDeniedDir)
}
}
}
// TestPosixs posix.getDiskInfo()
func TestPosixGetDiskInfo(t *testing.T) {
path, err := ioutil.TempDir(globalTestTmpDir, "minio-")
if err != nil {
t.Fatalf("Unable to create a temporary directory, %s", err)
}
defer os.RemoveAll(path)
testCases := []struct {
diskPath string
expectedErr error
}{
{path, nil},
{"/nonexistent-dir", errDiskNotFound},
}
// Check test cases.
for _, testCase := range testCases {
if _, err := getDiskInfo(testCase.diskPath); err != testCase.expectedErr {
t.Fatalf("expected: %s, got: %s", testCase.expectedErr, err)
}
}
}
func TestPosixIsDirEmpty(t *testing.T) {
tmp, err := ioutil.TempDir(globalTestTmpDir, "minio-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmp)
// Should give false on non-existent directory.
dir1 := slashpath.Join(tmp, "non-existent-directory")
if isDirEmpty(dir1) {
t.Error("expected false for non-existent directory, got true")
}
// Should give false for not-a-directory.
dir2 := slashpath.Join(tmp, "file")
err = ioutil.WriteFile(dir2, []byte("hello"), 0777)
if err != nil {
t.Fatal(err)
}
if isDirEmpty(dir2) {
t.Error("expected false for a file, got true")
}
// Should give true for a real empty directory.
dir3 := slashpath.Join(tmp, "empty")
err = os.Mkdir(dir3, 0777)
if err != nil {
t.Fatal(err)
}
if !isDirEmpty(dir3) {
t.Error("expected true for empty dir, got false")
}
}
// TestPosixReadAll - TestPosixs the functionality implemented by posix ReadAll storage API.
func TestPosixReadAll(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// Create files for the test cases.
if err = posixStorage.MakeVol("exists"); err != nil {
t.Fatalf("Unable to create a volume \"exists\", %s", err)
}
if err = posixStorage.AppendFile("exists", "as-directory/as-file", []byte("Hello, World")); err != nil {
t.Fatalf("Unable to create a file \"as-directory/as-file\", %s", err)
}
if err = posixStorage.AppendFile("exists", "as-file", []byte("Hello, World")); err != nil {
t.Fatalf("Unable to create a file \"as-file\", %s", err)
}
if err = posixStorage.AppendFile("exists", "as-file-parent", []byte("Hello, World")); err != nil {
t.Fatalf("Unable to create a file \"as-file-parent\", %s", err)
}
// TestPosixcases to validate different conditions for ReadAll API.
testCases := []struct {
volume string
path string
err error
}{
// TestPosix case - 1.
// Validate volume does not exist.
{
volume: "i-dont-exist",
path: "",
err: errVolumeNotFound,
},
// TestPosix case - 2.
// Validate bad condition file does not exist.
{
volume: "exists",
path: "as-file-not-found",
err: errFileNotFound,
},
// TestPosix case - 3.
// Validate bad condition file exists as prefix/directory and
// we are attempting to read it.
{
volume: "exists",
path: "as-directory",
err: errFileNotFound,
},
// TestPosix case - 4.
{
volume: "exists",
path: "as-file-parent/as-file",
err: errFileNotFound,
},
// TestPosix case - 5.
// Validate the good condition file exists and we are able to read it.
{
volume: "exists",
path: "as-file",
err: nil,
},
// TestPosix case - 6.
// TestPosix case with invalid volume name.
{
volume: "ab",
path: "as-file",
err: errVolumeNotFound,
},
}
var dataRead []byte
// Run through all the test cases and validate for ReadAll.
for i, testCase := range testCases {
dataRead, err = posixStorage.ReadAll(testCase.volume, testCase.path)
if err != testCase.err {
t.Fatalf("TestPosix %d: Expected err \"%s\", got err \"%s\"", i+1, testCase.err, err)
}
if err == nil {
if string(dataRead) != string([]byte("Hello, World")) {
t.Errorf("TestPosix %d: Expected the data read to be \"%s\", but instead got \"%s\"", i+1, "Hello, World", string(dataRead))
}
}
}
// TestPosixing for faulty disk.
// Setting ioErrCount > maxAllowedIOError.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(6)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
_, err = posixStorage.ReadAll("abcd", "efg")
if err != errFaultyDisk {
t.Errorf("Expected err \"%s\", got err \"%s\"", errFaultyDisk, err)
}
}
// TestPosixNewPosix all the cases handled in posix storage layer initialization.
func TestPosixNewPosix(t *testing.T) {
// Temporary dir name.
tmpDirName := globalTestTmpDir + SlashSeparator + "minio-" + nextSuffix()
// Temporary file name.
tmpFileName := globalTestTmpDir + SlashSeparator + "minio-" + nextSuffix()
f, _ := os.Create(tmpFileName)
f.Close()
defer os.Remove(tmpFileName)
// List of all tests for posix initialization.
testCases := []struct {
name string
err error
}{
// Validates input argument cannot be empty.
{
"",
errInvalidArgument,
},
// Validates if the directory does not exist and
// gets automatically created.
{
tmpDirName,
nil,
},
// Validates if the disk exists as file and returns error
// not a directory.
{
tmpFileName,
syscall.ENOTDIR,
},
}
// Validate all test cases.
for i, testCase := range testCases {
// Initialize a new posix layer.
_, err := newPosix(testCase.name)
if err != testCase.err {
t.Fatalf("TestPosix %d failed wanted: %s, got: %s", i+1, err, testCase.err)
}
}
}
// TestPosixMakeVol - TestPosix validate the logic for creation of new posix volume.
// Asserts the failures too against the expected failures.
func TestPosixMakeVol(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// Setup test environment.
// Create a file.
if err := ioutil.WriteFile(slashpath.Join(path, "vol-as-file"), []byte{}, os.ModePerm); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
// Create a directory.
if err := os.Mkdir(slashpath.Join(path, "existing-vol"), 0777); err != nil {
t.Fatalf("Unable to create directory, %s", err)
}
testCases := []struct {
volName string
ioErrCount int
expectedErr error
}{
// TestPosix case - 1.
// A valid case, volume creation is expected to succeed.
{
volName: "success-vol",
ioErrCount: 0,
expectedErr: nil,
},
// TestPosix case - 2.
// Case where a file exists by the name of the volume to be created.
{
volName: "vol-as-file",
ioErrCount: 0,
expectedErr: errVolumeExists,
},
// TestPosix case - 3.
{
volName: "existing-vol",
ioErrCount: 0,
expectedErr: errVolumeExists,
},
// TestPosix case - 4.
// IO error > maxAllowedIOError, should fail with errFaultyDisk.
{
volName: "vol",
ioErrCount: 6,
expectedErr: errFaultyDisk,
},
// TestPosix case - 5.
// TestPosix case with invalid volume name.
{
volName: "ab",
ioErrCount: 0,
expectedErr: errInvalidArgument,
},
}
for i, testCase := range testCases {
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(testCase.ioErrCount)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
if err := posixStorage.MakeVol(testCase.volName); err != testCase.expectedErr {
t.Fatalf("TestPosix %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
}
// TestPosix for permission denied.
if runtime.GOOS != globalWindowsOSName {
permDeniedDir, err := ioutil.TempDir(globalTestTmpDir, "minio-")
if err != nil {
t.Fatalf("Unable to create temporary directory. %v", err)
}
defer os.RemoveAll(permDeniedDir)
if err = os.Chmod(permDeniedDir, 0400); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
// Initialize posix storage layer for permission denied error.
_, err = newPosix(permDeniedDir)
if err != nil && !os.IsPermission(err) {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = os.Chmod(permDeniedDir, 0755); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
posixStorage, err = newPosix(permDeniedDir)
if err != nil {
t.Fatalf("Unable to initialize posix, %s", err)
}
// change backend permissions for MakeVol error.
if err = os.Chmod(permDeniedDir, 0400); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
if err := posixStorage.MakeVol("test-vol"); err != errDiskAccessDenied {
t.Fatalf("expected: %s, got: %s", errDiskAccessDenied, err)
}
}
}
// TestPosixDeleteVol - Validates the expected behavior of posix.DeleteVol for various cases.
func TestPosixDeleteVol(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// Setup test environment.
if err = posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
// TestPosix failure cases.
vol := slashpath.Join(path, "nonempty-vol")
if err = os.Mkdir(vol, 0777); err != nil {
t.Fatalf("Unable to create directory, %s", err)
}
if err = ioutil.WriteFile(slashpath.Join(vol, "test-file"), []byte{}, os.ModePerm); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
testCases := []struct {
volName string
ioErrCount int
expectedErr error
}{
// TestPosix case - 1.
// A valida case. Empty vol, should be possible to delete.
{
volName: "success-vol",
ioErrCount: 0,
expectedErr: nil,
},
// TestPosix case - 2.
// volume is non-existent.
{
volName: "nonexistent-vol",
ioErrCount: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 3.
// It shouldn't be possible to delete an non-empty volume, validating the same.
{
volName: "nonempty-vol",
ioErrCount: 0,
expectedErr: errVolumeNotEmpty,
},
// TestPosix case - 4.
// IO error > maxAllowedIOError, should fail with errFaultyDisk.
{
volName: "my-disk",
ioErrCount: 6,
expectedErr: errFaultyDisk,
},
// TestPosix case - 5.
// Invalid volume name.
{
volName: "ab",
ioErrCount: 0,
expectedErr: errVolumeNotFound,
},
}
for i, testCase := range testCases {
if posixDiskCheck, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
posixDiskCheck.storage.ioErrCount = int32(testCase.ioErrCount)
} else {
t.Errorf("Expected the StorageAPI to be of type *posixDiskIDCheck")
}
if err = posixStorage.DeleteVol(testCase.volName); err != testCase.expectedErr {
t.Fatalf("TestPosix: %d, expected: %s, got: %s", i+1, testCase.expectedErr, err)
}
}
// TestPosix for permission denied.
if runtime.GOOS != globalWindowsOSName {
var permDeniedDir string
if permDeniedDir, err = ioutil.TempDir(globalTestTmpDir, "minio-"); err != nil {
t.Fatalf("Unable to create temporary directory. %v", err)
}
defer removePermDeniedFile(permDeniedDir)
if err = os.Mkdir(slashpath.Join(permDeniedDir, "mybucket"), 0400); err != nil {
t.Fatalf("Unable to create temporary directory %v. %v", slashpath.Join(permDeniedDir, "mybucket"), err)
}
if err = os.Chmod(permDeniedDir, 0400); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
// Initialize posix storage layer for permission denied error.
_, err = newPosix(permDeniedDir)
if err != nil && !os.IsPermission(err) {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = os.Chmod(permDeniedDir, 0755); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
posixStorage, err = newPosix(permDeniedDir)
if err != nil {
t.Fatalf("Unable to initialize posix, %s", err)
}
// change backend permissions for MakeVol error.
if err = os.Chmod(permDeniedDir, 0400); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
if err = posixStorage.DeleteVol("mybucket"); err != errDiskAccessDenied {
t.Fatalf("expected: Permission error, got: %s", err)
}
}
posixDeletedStorage, diskPath, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
// removing the disk, used to recreate disk not found error.
os.RemoveAll(diskPath)
// TestPosix for delete on an removed disk.
// should fail with disk not found.
err = posixDeletedStorage.DeleteVol("Del-Vol")
if err != errDiskNotFound {
t.Errorf("Expected: \"Disk not found\", got \"%s\"", err)
}
}
// TestPosixStatVol - TestPosixs validate the volume info returned by posix.StatVol() for various inputs.
func TestPosixStatVol(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// Setup test environment.
if err = posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
testCases := []struct {
volName string
ioErrCount int
expectedErr error
}{
// TestPosix case - 1.
{
volName: "success-vol",
ioErrCount: 0,
expectedErr: nil,
},
// TestPosix case - 2.
{
volName: "nonexistent-vol",
ioErrCount: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 3.
{
volName: "success-vol",
ioErrCount: 6,
expectedErr: errFaultyDisk,
},
// TestPosix case - 4.
{
volName: "ab",
ioErrCount: 0,
expectedErr: errVolumeNotFound,
},
}
for i, testCase := range testCases {
var volInfo VolInfo
// setting ioErrCnt from the test case.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(testCase.ioErrCount)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
volInfo, err = posixStorage.StatVol(testCase.volName)
if err != testCase.expectedErr {
t.Fatalf("TestPosix case : %d, Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
if err == nil {
if volInfo.Name != volInfo.Name {
t.Errorf("TestPosix case %d: Expected the volume name to be \"%s\", instead found \"%s\"", i+1, volInfo.Name, volInfo.Name)
}
}
}
posixDeletedStorage, diskPath, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
// removing the disk, used to recreate disk not found error.
os.RemoveAll(diskPath)
// TestPosix for delete on an removed disk.
// should fail with disk not found.
_, err = posixDeletedStorage.StatVol("Stat vol")
if err != errDiskNotFound {
t.Errorf("Expected: \"Disk not found\", got \"%s\"", err)
}
}
// TestPosixListVols - Validates the result and the error output for posix volume listing functionality posix.ListVols().
func TestPosixListVols(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
var volInfos []VolInfo
// TestPosix empty list vols.
if volInfos, err = posixStorage.ListVols(); err != nil {
t.Fatalf("expected: <nil>, got: %s", err)
} else if len(volInfos) != 1 {
t.Fatalf("expected: one entry, got: %s", volInfos)
}
// TestPosix non-empty list vols.
if err = posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
volInfos, err = posixStorage.ListVols()
if err != nil {
t.Fatalf("expected: <nil>, got: %s", err)
}
if len(volInfos) != 2 {
t.Fatalf("expected: 2, got: %d", len(volInfos))
}
volFound := false
for _, info := range volInfos {
if info.Name == "success-vol" {
volFound = true
break
}
}
if !volFound {
t.Errorf("expected: success-vol to be created")
}
// setting ioErrCnt to be > maxAllowedIOError.
// should fail with errFaultyDisk.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(6)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
if _, err = posixStorage.ListVols(); err != errFaultyDisk {
t.Errorf("Expected to fail with \"%s\", but instead failed with \"%s\"", errFaultyDisk, err)
}
// removing the path and simulating disk failure
os.RemoveAll(path)
// Resetting the IO error.
// should fail with errDiskNotFound.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(0)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
if _, err = posixStorage.ListVols(); err != errDiskNotFound {
t.Errorf("Expected to fail with \"%s\", but instead failed with \"%s\"", errDiskNotFound, err)
}
}
// TestPosixPosixListDir - TestPosixs validate the directory listing functionality provided by posix.ListDir .
func TestPosixPosixListDir(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// create posix test setup.
posixDeletedStorage, diskPath, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
// removing the disk, used to recreate disk not found error.
os.RemoveAll(diskPath)
// Setup test environment.
if err = posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
if err = posixStorage.AppendFile("success-vol", "abc/def/ghi/success-file", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err = posixStorage.AppendFile("success-vol", "abc/xyz/ghi/success-file", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
testCases := []struct {
srcVol string
srcPath string
ioErrCnt int
// expected result.
expectedListDir []string
expectedErr error
}{
// TestPosix case - 1.
// valid case with existing volume and file to delete.
{
srcVol: "success-vol",
srcPath: "abc",
ioErrCnt: 0,
expectedListDir: []string{"def/", "xyz/"},
expectedErr: nil,
},
// TestPosix case - 1.
// valid case with existing volume and file to delete.
{
srcVol: "success-vol",
srcPath: "abc/def",
ioErrCnt: 0,
expectedListDir: []string{"ghi/"},
expectedErr: nil,
},
// TestPosix case - 1.
// valid case with existing volume and file to delete.
{
srcVol: "success-vol",
srcPath: "abc/def/ghi",
ioErrCnt: 0,
expectedListDir: []string{"success-file"},
expectedErr: nil,
},
// TestPosix case - 2.
{
srcVol: "success-vol",
srcPath: "abcdef",
ioErrCnt: 0,
expectedErr: errFileNotFound,
},
// TestPosix case - 3.
// TestPosix case with invalid volume name.
{
srcVol: "ab",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 4.
// TestPosix case with io error count > max limit.
{
srcVol: "success-vol",
srcPath: "success-file",
ioErrCnt: 6,
expectedErr: errFaultyDisk,
},
// TestPosix case - 5.
// TestPosix case with non existent volume.
{
srcVol: "non-existent-vol",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
}
for i, testCase := range testCases {
var dirList []string
// setting ioErrCnt from the test case.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(testCase.ioErrCnt)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
dirList, err = posixStorage.ListDir(testCase.srcVol, testCase.srcPath, -1, "")
if err != testCase.expectedErr {
t.Fatalf("TestPosix case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
if err == nil {
for _, expected := range testCase.expectedListDir {
if !strings.Contains(strings.Join(dirList, ","), expected) {
t.Errorf("TestPosix case %d: Expected the directory listing to be \"%v\", but got \"%v\"", i+1, testCase.expectedListDir, dirList)
}
}
}
}
// TestPosix for permission denied.
if runtime.GOOS != globalWindowsOSName {
permDeniedDir := createPermDeniedFile(t)
defer removePermDeniedFile(permDeniedDir)
// Initialize posix storage layer for permission denied error.
_, err = newPosix(permDeniedDir)
if err != nil && !os.IsPermission(err) {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = os.Chmod(permDeniedDir, 0755); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
posixStorage, err = newPosix(permDeniedDir)
if err != nil {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = posixStorage.DeleteFile("mybucket", "myobject"); err != errFileAccessDenied {
t.Errorf("expected: %s, got: %s", errFileAccessDenied, err)
}
}
// TestPosix for delete on an removed disk.
// should fail with disk not found.
err = posixDeletedStorage.DeleteFile("del-vol", "my-file")
if err != errDiskNotFound {
t.Errorf("Expected: \"Disk not found\", got \"%s\"", err)
}
}
// TestPosixDeleteFile - Series of test cases construct valid and invalid input data and validates the result and the error response.
func TestPosixDeleteFile(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// create posix test setup
posixDeletedStorage, diskPath, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
// removing the disk, used to recreate disk not found error.
os.RemoveAll(diskPath)
// Setup test environment.
if err = posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
if err = posixStorage.AppendFile("success-vol", "success-file", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err = posixStorage.MakeVol("no-permissions"); err != nil {
t.Fatalf("Unable to create volume, %s", err.Error())
}
if err = posixStorage.AppendFile("no-permissions", "dir/file", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err.Error())
}
// Parent directory must have write permissions, this is read + execute.
if err = os.Chmod(pathJoin(path, "no-permissions"), 0555); err != nil {
t.Fatalf("Unable to chmod directory, %s", err.Error())
}
testCases := []struct {
srcVol string
srcPath string
ioErrCnt int
expectedErr error
}{
// TestPosix case - 1.
// valid case with existing volume and file to delete.
{
srcVol: "success-vol",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: nil,
},
// TestPosix case - 2.
// The file was deleted in the last case, so DeleteFile should fail.
{
srcVol: "success-vol",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: errFileNotFound,
},
// TestPosix case - 3.
// TestPosix case with io error count > max limit.
{
srcVol: "success-vol",
srcPath: "success-file",
ioErrCnt: 6,
expectedErr: errFaultyDisk,
},
// TestPosix case - 4.
// TestPosix case with segment of the volume name > 255.
{
srcVol: "my",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 5.
// TestPosix case with non-existent volume.
{
srcVol: "non-existent-vol",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 6.
// TestPosix case with src path segment > 255.
{
srcVol: "success-vol",
srcPath: "my-obj-del-0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
ioErrCnt: 0,
expectedErr: errFileNameTooLong,
},
// TestPosix case - 7.
// TestPosix case with undeletable parent directory.
// File can delete, dir cannot delete because no-permissions doesn't have write perms.
{
srcVol: "no-permissions",
srcPath: "dir/file",
ioErrCnt: 0,
expectedErr: nil,
},
}
for i, testCase := range testCases {
// setting ioErrCnt from the test case.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(testCase.ioErrCnt)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
if err = posixStorage.DeleteFile(testCase.srcVol, testCase.srcPath); err != testCase.expectedErr {
t.Errorf("TestPosix case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
}
// TestPosix for permission denied.
if runtime.GOOS != globalWindowsOSName {
permDeniedDir := createPermDeniedFile(t)
defer removePermDeniedFile(permDeniedDir)
// Initialize posix storage layer for permission denied error.
_, err = newPosix(permDeniedDir)
if err != nil && !os.IsPermission(err) {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = os.Chmod(permDeniedDir, 0755); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
posixStorage, err = newPosix(permDeniedDir)
if err != nil {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = posixStorage.DeleteFile("mybucket", "myobject"); err != errFileAccessDenied {
t.Errorf("expected: %s, got: %s", errFileAccessDenied, err)
}
}
// TestPosix for delete on an removed disk.
// should fail with disk not found.
err = posixDeletedStorage.DeleteFile("del-vol", "my-file")
if err != errDiskNotFound {
t.Errorf("Expected: \"Disk not found\", got \"%s\"", err)
}
}
// TestPosixReadFile - TestPosixs posix.ReadFile with wide range of cases and asserts the result and error response.
func TestPosixReadFile(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
volume := "success-vol"
// Setup test environment.
if err = posixStorage.MakeVol(volume); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
// Create directory to make errIsNotRegular
if err = os.Mkdir(slashpath.Join(path, "success-vol", "object-as-dir"), 0777); err != nil {
t.Fatalf("Unable to create directory, %s", err)
}
testCases := []struct {
volume string
fileName string
offset int64
bufSize int
expectedBuf []byte
expectedErr error
}{
// Successful read at offset 0 and proper buffer size. - 1
{
volume, "myobject", 0, 5,
[]byte("hello"), nil,
},
// Success read at hierarchy. - 2
{
volume, "path/to/my/object", 0, 5,
[]byte("hello"), nil,
},
// Object is a directory. - 3
{
volume, "object-as-dir",
0, 5, nil, errIsNotRegular},
// One path segment length is > 255 chars long. - 4
{
volume, "path/to/my/object0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
0, 5, nil, errFileNameTooLong},
// Path length is > 1024 chars long. - 5
{
volume, "level0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001/level0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002/level0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003/object000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
0, 5, nil, errFileNameTooLong},
// Buffer size greater than object size. - 6
{
volume, "myobject", 0, 16,
[]byte("hello, world"),
io.ErrUnexpectedEOF,
},
// Reading from an offset success. - 7
{
volume, "myobject", 7, 5,
[]byte("world"), nil,
},
// Reading from an object but buffer size greater. - 8
{
volume, "myobject",
7, 8,
[]byte("world"),
io.ErrUnexpectedEOF,
},
// Seeking ahead returns io.EOF. - 9
{
volume, "myobject", 14, 1, nil, io.EOF,
},
// Empty volume name. - 10
{
"", "myobject", 14, 1, nil, errVolumeNotFound,
},
// Empty filename name. - 11
{
volume, "", 14, 1, nil, errIsNotRegular,
},
// Non existent volume name - 12
{
"abcd", "", 14, 1, nil, errVolumeNotFound,
},
// Non existent filename - 13
{
volume, "abcd", 14, 1, nil, errFileNotFound,
},
}
// Create all files needed during testing.
appendFiles := testCases[:4]
v := NewBitrotVerifier(SHA256, getSHA256Sum([]byte("hello, world")))
// Create test files for further reading.
for i, appendFile := range appendFiles {
err = posixStorage.AppendFile(volume, appendFile.fileName, []byte("hello, world"))
if err != appendFile.expectedErr {
t.Fatalf("Creating file failed: %d %#v, expected: %s, got: %s", i+1, appendFile, appendFile.expectedErr, err)
}
}
{
buf := make([]byte, 5)
// Test for negative offset.
if _, err = posixStorage.ReadFile(volume, "myobject", -1, buf, v); err == nil {
t.Fatalf("expected: error, got: <nil>")
}
}
// Following block validates all ReadFile test cases.
for i, testCase := range testCases {
var n int64
// Common read buffer.
var buf = make([]byte, testCase.bufSize)
n, err = posixStorage.ReadFile(testCase.volume, testCase.fileName, testCase.offset, buf, v)
if err != nil && testCase.expectedErr != nil {
// Validate if the type string of the errors are an exact match.
if err.Error() != testCase.expectedErr.Error() {
if runtime.GOOS != globalWindowsOSName {
t.Errorf("Case: %d %#v, expected: %s, got: %s", i+1, testCase, testCase.expectedErr, err)
} else {
var resultErrno, expectErrno uintptr
if pathErr, ok := err.(*os.PathError); ok {
if errno, pok := pathErr.Err.(syscall.Errno); pok {
resultErrno = uintptr(errno)
}
}
if pathErr, ok := testCase.expectedErr.(*os.PathError); ok {
if errno, pok := pathErr.Err.(syscall.Errno); pok {
expectErrno = uintptr(errno)
}
}
if !(expectErrno != 0 && resultErrno != 0 && expectErrno == resultErrno) {
t.Errorf("Case: %d %#v, expected: %s, got: %s", i+1, testCase, testCase.expectedErr, err)
}
}
}
// Err unexpected EOF special case, where we verify we have provided a larger
// buffer than the data itself, but the results are in-fact valid. So we validate
// this error condition specifically treating it as a good condition with valid
// results. In this scenario return 'n' is always lesser than the input buffer.
if err == io.ErrUnexpectedEOF {
if !bytes.Equal(testCase.expectedBuf, buf[:n]) {
t.Errorf("Case: %d %#v, expected: \"%s\", got: \"%s\"", i+1, testCase, string(testCase.expectedBuf), string(buf[:n]))
}
if n > int64(len(buf)) {
t.Errorf("Case: %d %#v, expected: %d, got: %d", i+1, testCase, testCase.bufSize, n)
}
}
}
// ReadFile has returned success, but our expected error is non 'nil'.
if err == nil && err != testCase.expectedErr {
t.Errorf("Case: %d %#v, expected: %s, got :%s", i+1, testCase, testCase.expectedErr, err)
}
// Expected error retured, proceed further to validate the returned results.
if err == nil && err == testCase.expectedErr {
if !bytes.Equal(testCase.expectedBuf, buf) {
t.Errorf("Case: %d %#v, expected: \"%s\", got: \"%s\"", i+1, testCase, string(testCase.expectedBuf), string(buf[:testCase.bufSize]))
}
if n != int64(testCase.bufSize) {
t.Errorf("Case: %d %#v, expected: %d, got: %d", i+1, testCase, testCase.bufSize, n)
}
}
}
// TestPosix for permission denied.
if runtime.GOOS != globalWindowsOSName {
permDeniedDir := createPermDeniedFile(t)
defer removePermDeniedFile(permDeniedDir)
// Initialize posix storage layer for permission denied error.
_, err = newPosix(permDeniedDir)
if err != nil && !os.IsPermission(err) {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = os.Chmod(permDeniedDir, 0755); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
posixPermStorage, err := newPosix(permDeniedDir)
if err != nil {
t.Fatalf("Unable to initialize posix, %s", err)
}
// Common read buffer.
var buf = make([]byte, 10)
if _, err = posixPermStorage.ReadFile("mybucket", "myobject", 0, buf, v); err != errFileAccessDenied {
t.Errorf("expected: %s, got: %s", errFileAccessDenied, err)
}
}
// TestPosixing for faulty disk.
// setting ioErrCnt to 6.
// should fail with errFaultyDisk.
if posixType, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
posixType.storage.ioErrCount = int32(6)
// Common read buffer.
var buf = make([]byte, 10)
_, err = posixType.ReadFile("abc", "yes", 0, buf, nil)
if err != errFaultyDisk {
t.Fatalf("Expected \"Faulty Disk\", got: \"%s\"", err)
}
} else {
t.Fatalf("Expected the StorageAPI to be of type *posixDiskIDCheck")
}
}
var posixReadFileWithVerifyTests = []struct {
file string
offset int
length int
algorithm BitrotAlgorithm
expError error
}{
{file: "myobject", offset: 0, length: 100, algorithm: SHA256, expError: nil}, // 0
{file: "myobject", offset: 25, length: 74, algorithm: SHA256, expError: nil}, // 1
{file: "myobject", offset: 29, length: 70, algorithm: SHA256, expError: nil}, // 2
{file: "myobject", offset: 100, length: 0, algorithm: SHA256, expError: nil}, // 3
{file: "myobject", offset: 1, length: 120, algorithm: SHA256, expError: errFileCorrupt}, // 4
{file: "myobject", offset: 3, length: 1100, algorithm: SHA256, expError: nil}, // 5
{file: "myobject", offset: 2, length: 100, algorithm: SHA256, expError: errFileCorrupt}, // 6
{file: "myobject", offset: 1000, length: 1001, algorithm: SHA256, expError: nil}, // 7
{file: "myobject", offset: 0, length: 100, algorithm: BLAKE2b512, expError: errFileCorrupt}, // 8
{file: "myobject", offset: 25, length: 74, algorithm: BLAKE2b512, expError: nil}, // 9
{file: "myobject", offset: 29, length: 70, algorithm: BLAKE2b512, expError: errFileCorrupt}, // 10
{file: "myobject", offset: 100, length: 0, algorithm: BLAKE2b512, expError: nil}, // 11
{file: "myobject", offset: 1, length: 120, algorithm: BLAKE2b512, expError: nil}, // 12
{file: "myobject", offset: 3, length: 1100, algorithm: BLAKE2b512, expError: nil}, // 13
{file: "myobject", offset: 2, length: 100, algorithm: BLAKE2b512, expError: nil}, // 14
{file: "myobject", offset: 1000, length: 1001, algorithm: BLAKE2b512, expError: nil}, // 15
}
// TestPosixReadFile with bitrot verification - tests the posix level
// ReadFile API with a BitrotVerifier. Only tests hashing related
// functionality. Other functionality is tested with
// TestPosixReadFile.
func TestPosixReadFileWithVerify(t *testing.T) {
volume, object := "test-vol", "myobject"
posixStorage, path, err := newPosixTestSetup()
if err != nil {
os.RemoveAll(path)
t.Fatalf("Unable to create posix test setup, %s", err)
}
if err = posixStorage.MakeVol(volume); err != nil {
os.RemoveAll(path)
t.Fatalf("Unable to create volume %s: %v", volume, err)
}
data := make([]byte, 8*1024)
if _, err = io.ReadFull(rand.Reader, data); err != nil {
os.RemoveAll(path)
t.Fatalf("Unable to create generate random data: %v", err)
}
if err = posixStorage.AppendFile(volume, object, data); err != nil {
os.RemoveAll(path)
t.Fatalf("Unable to create object: %v", err)
}
for i, test := range posixReadFileWithVerifyTests {
h := test.algorithm.New()
h.Write(data)
if test.expError != nil {
h.Write([]byte{0})
}
buffer := make([]byte, test.length)
n, err := posixStorage.ReadFile(volume, test.file, int64(test.offset), buffer, NewBitrotVerifier(test.algorithm, h.Sum(nil)))
switch {
case err == nil && test.expError != nil:
t.Errorf("Test %d: Expected error %v but got none.", i, test.expError)
case err == nil && n != int64(test.length):
t.Errorf("Test %d: %d bytes were expected, but %d were written", i, test.length, n)
case err == nil && !bytes.Equal(data[test.offset:test.offset+test.length], buffer):
t.Errorf("Test %d: Expected bytes: %v, but got: %v", i, data[test.offset:test.offset+test.length], buffer)
case err != nil && err != test.expError:
t.Errorf("Test %d: Expected error: %v, but got: %v", i, test.expError, err)
}
}
}
// TestPosixFormatFileChange - to test if changing the diskID makes the calls fail.
func TestPosixFormatFileChange(t *testing.T) {
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
if err = posixStorage.MakeVol(volume); err != nil {
t.Fatalf("MakeVol failed with %s", err)
}
// Change the format.json such that "this" is changed to "randomid".
if err = ioutil.WriteFile(pathJoin(posixStorage.String(), minioMetaBucket, formatConfigFile), []byte(`{"version":"1","format":"xl","id":"592a41c2-b7cc-4130-b883-c4b5cb15965b","xl":{"version":"3","this":"randomid","sets":[["e07285a6-8c73-4962-89c6-047fb939f803","33b8d431-482d-4376-b63c-626d229f0a29","cff6513a-4439-4dc1-bcaa-56c9e880c352","randomid","9c9f21d5-1f15-4737-bce6-835faa0d9626","0a59b346-1424-4fc2-9fa2-a2e80541d0c1","7924a3dc-b69a-4971-9a2e-014966d6aebb","4d2b8dd9-4e48-444b-bdca-c89194b26042"]],"distributionAlgo":"CRCMOD"}}`), 0644); err != nil {
t.Fatalf("ioutil.WriteFile failed with %s", err)
}
err = posixStorage.MakeVol(volume)
if err != errDiskNotFound {
t.Fatalf("MakeVol expected to fail with errDiskNotFound but failed with %s", err)
}
}
// TestPosix posix.AppendFile()
func TestPosixAppendFile(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// Setup test environment.
if err = posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
// Create directory to make errIsNotRegular
if err = os.Mkdir(slashpath.Join(path, "success-vol", "object-as-dir"), 0777); err != nil {
t.Fatalf("Unable to create directory, %s", err)
}
testCases := []struct {
fileName string
expectedErr error
}{
{"myobject", nil},
{"path/to/my/object", nil},
// TestPosix to append to previously created file.
{"myobject", nil},
// TestPosix to use same path of previously created file.
{"path/to/my/testobject", nil},
// TestPosix to use object is a directory now.
{"object-as-dir", errIsNotRegular},
// path segment uses previously uploaded object.
{"myobject/testobject", errFileAccessDenied},
// One path segment length is > 255 chars long.
{"path/to/my/object0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001", errFileNameTooLong},
// path length is > 1024 chars long.
{"level0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001/level0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002/level0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003/object000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001", errFileNameTooLong},
}
for i, testCase := range testCases {
if err = posixStorage.AppendFile("success-vol", testCase.fileName, []byte("hello, world")); err != testCase.expectedErr {
t.Errorf("Case: %d, expected: %s, got: %s", i+1, testCase.expectedErr, err)
}
}
// TestPosix for permission denied.
if runtime.GOOS != globalWindowsOSName {
permDeniedDir := createPermDeniedFile(t)
defer removePermDeniedFile(permDeniedDir)
var posixPermStorage StorageAPI
// Initialize posix storage layer for permission denied error.
_, err = newPosix(permDeniedDir)
if err != nil && !os.IsPermission(err) {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = os.Chmod(permDeniedDir, 0755); err != nil {
t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
}
posixPermStorage, err = newPosix(permDeniedDir)
if err != nil {
t.Fatalf("Unable to initialize posix, %s", err)
}
if err = posixPermStorage.AppendFile("mybucket", "myobject", []byte("hello, world")); err != errFileAccessDenied {
t.Fatalf("expected: Permission error, got: %s", err)
}
}
// TestPosix case with invalid volume name.
// A valid volume name should be atleast of size 3.
err = posixStorage.AppendFile("bn", "yes", []byte("hello, world"))
if err != errVolumeNotFound {
t.Fatalf("expected: \"Invalid argument error\", got: \"%s\"", err)
}
// TestPosix case with IO error count > max limit.
// setting ioErrCnt to 6.
// should fail with errFaultyDisk.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(6)
err = p.AppendFile("abc", "yes", []byte("hello, world"))
if err != errFaultyDisk {
t.Fatalf("Expected \"Faulty Disk\", got: \"%s\"", err)
}
} else {
t.Fatalf("Expected the StorageAPI to be of type *posix")
}
}
// TestPosix posix.RenameFile()
func TestPosixRenameFile(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// Setup test environment.
if err := posixStorage.MakeVol("src-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
if err := posixStorage.MakeVol("dest-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
if err := posixStorage.AppendFile("src-vol", "file1", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err := posixStorage.AppendFile("src-vol", "file2", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err := posixStorage.AppendFile("src-vol", "file3", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err := posixStorage.AppendFile("src-vol", "file4", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err := posixStorage.AppendFile("src-vol", "file5", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err := posixStorage.AppendFile("src-vol", "path/to/file1", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
testCases := []struct {
srcVol string
destVol string
srcPath string
destPath string
ioErrCnt int
expectedErr error
}{
// TestPosix case - 1.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "file1",
destPath: "file-one",
ioErrCnt: 0,
expectedErr: nil,
},
// TestPosix case - 2.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "path/",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: nil,
},
// TestPosix case - 3.
// TestPosix to overwrite destination file.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "file2",
destPath: "file-one",
ioErrCnt: 0,
expectedErr: nil,
},
// TestPosix case - 4.
// TestPosix case with io error count set to 1.
// expected not to fail.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "file3",
destPath: "file-two",
ioErrCnt: 1,
expectedErr: nil,
},
// TestPosix case - 5.
// TestPosix case with io error count set to maximum allowed count.
// expected not to fail.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "file4",
destPath: "file-three",
ioErrCnt: 5,
expectedErr: nil,
},
// TestPosix case - 6.
// TestPosix case with non-existent source file.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "non-existent-file",
destPath: "file-three",
ioErrCnt: 0,
expectedErr: errFileNotFound,
},
// TestPosix case - 7.
// TestPosix to check failure of source and destination are not same type.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "path/",
destPath: "file-one",
ioErrCnt: 0,
expectedErr: errFileAccessDenied,
},
// TestPosix case - 8.
// TestPosix to check failure of destination directory exists.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "path/",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: errFileAccessDenied,
},
// TestPosix case - 9.
// TestPosix case with io error count is greater than maxAllowedIOError.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "path/",
destPath: "new-path/",
ioErrCnt: 6,
expectedErr: errFaultyDisk,
},
// TestPosix case - 10.
// TestPosix case with source being a file and destination being a directory.
// Either both have to be files or directories.
// Expecting to fail with `errFileAccessDenied`.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "file4",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: errFileAccessDenied,
},
// TestPosix case - 11.
// TestPosix case with non-existent source volume.
// Expecting to fail with `errVolumeNotFound`.
{
srcVol: "src-vol-non-existent",
destVol: "dest-vol",
srcPath: "file4",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 12.
// TestPosix case with non-existent destination volume.
// Expecting to fail with `errVolumeNotFound`.
{
srcVol: "src-vol",
destVol: "dest-vol-non-existent",
srcPath: "file4",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 13.
// TestPosix case with invalid src volume name. Length should be atleast 3.
// Expecting to fail with `errInvalidArgument`.
{
srcVol: "ab",
destVol: "dest-vol-non-existent",
srcPath: "file4",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 14.
// TestPosix case with invalid destination volume name. Length should be atleast 3.
// Expecting to fail with `errInvalidArgument`.
{
srcVol: "abcd",
destVol: "ef",
srcPath: "file4",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 15.
// TestPosix case with invalid destination volume name. Length should be atleast 3.
// Expecting to fail with `errInvalidArgument`.
{
srcVol: "abcd",
destVol: "ef",
srcPath: "file4",
destPath: "new-path/",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
// TestPosix case - 16.
// TestPosix case with the parent of the destination being a file.
// expected to fail with `errFileAccessDenied`.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "file5",
destPath: "file-one/parent-is-file",
ioErrCnt: 0,
expectedErr: errFileAccessDenied,
},
// TestPosix case - 17.
// TestPosix case with segment of source file name more than 255.
// expected not to fail.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "path/to/my/object0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
destPath: "file-six",
ioErrCnt: 0,
expectedErr: errFileNameTooLong,
},
// TestPosix case - 18.
// TestPosix case with segment of destination file name more than 255.
// expected not to fail.
{
srcVol: "src-vol",
destVol: "dest-vol",
srcPath: "file6",
destPath: "path/to/my/object0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
ioErrCnt: 0,
expectedErr: errFileNameTooLong,
},
}
for i, testCase := range testCases {
// setting ioErrCnt from the test case.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(testCase.ioErrCnt)
} else {
t.Fatalf("Expected the StorageAPI to be of type *posix")
}
if err := posixStorage.RenameFile(testCase.srcVol, testCase.srcPath, testCase.destVol, testCase.destPath); err != testCase.expectedErr {
t.Fatalf("TestPosix %d: Expected the error to be : \"%v\", got: \"%v\".", i+1, testCase.expectedErr, err)
}
}
}
// TestPosix posix.StatFile()
func TestPosixStatFile(t *testing.T) {
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
// Setup test environment.
if err := posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
if err := posixStorage.AppendFile("success-vol", "success-file", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
if err := posixStorage.AppendFile("success-vol", "path/to/success-file", []byte("Hello, world")); err != nil {
t.Fatalf("Unable to create file, %s", err)
}
testCases := []struct {
srcVol string
srcPath string
ioErrCnt int
expectedErr error
}{
// TestPosix case - 1.
// TestPosix case with valid inputs, expected to pass.
{
srcVol: "success-vol",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: nil,
},
// TestPosix case - 2.
// TestPosix case with valid inputs, expected to pass.
{
srcVol: "success-vol",
srcPath: "path/to/success-file",
ioErrCnt: 0,
expectedErr: nil,
},
// TestPosix case - 3.
// TestPosix case with non-existent file.
{
srcVol: "success-vol",
srcPath: "nonexistent-file",
ioErrCnt: 0,
expectedErr: errFileNotFound,
},
// TestPosix case - 4.
// TestPosix case with non-existent file path.
{
srcVol: "success-vol",
srcPath: "path/2/success-file",
ioErrCnt: 0,
expectedErr: errFileNotFound,
},
// TestPosix case - 5.
// TestPosix case with path being a directory.
{
srcVol: "success-vol",
srcPath: "path",
ioErrCnt: 0,
expectedErr: errFileNotFound,
},
// TestPosix case - 6.
// TestPosix case with io error count > max limit.
{
srcVol: "success-vol",
srcPath: "success-file",
ioErrCnt: 6,
expectedErr: errFaultyDisk,
},
// TestPosix case - 7.
// TestPosix case with non existent volume.
{
srcVol: "non-existent-vol",
srcPath: "success-file",
ioErrCnt: 0,
expectedErr: errVolumeNotFound,
},
}
for i, testCase := range testCases {
// setting ioErrCnt from the test case.
if p, ok := posixStorage.(*posixDiskIDCheck); ok {
// setting the io error count from as specified in the test case.
p.storage.ioErrCount = int32(testCase.ioErrCnt)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
if _, err := posixStorage.StatFile(testCase.srcVol, testCase.srcPath); err != testCase.expectedErr {
t.Fatalf("TestPosix case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
}
}
// Test posix.VerifyFile()
func TestPosixVerifyFile(t *testing.T) {
// We test 4 cases:
// 1) Whole-file bitrot check on proper file
// 2) Whole-file bitrot check on corrupted file
// 3) Streaming bitrot check on proper file
// 4) Streaming bitrot check on corrupted file
// create posix test setup
posixStorage, path, err := newPosixTestSetup()
if err != nil {
t.Fatalf("Unable to create posix test setup, %s", err)
}
defer os.RemoveAll(path)
volName := "testvol"
fileName := "testfile"
if err := posixStorage.MakeVol(volName); err != nil {
t.Fatal(err)
}
// 1) Whole-file bitrot check on proper file
size := int64(4*1024*1024 + 100*1024) // 4.1 MB
data := make([]byte, size)
if _, err := rand.Read(data); err != nil {
t.Fatal(err)
}
algo := HighwayHash256
h := algo.New()
h.Write(data)
hashBytes := h.Sum(nil)
if err := posixStorage.WriteAll(volName, fileName, bytes.NewBuffer(data)); err != nil {
t.Fatal(err)
}
if err := posixStorage.VerifyFile(volName, fileName, size, algo, hashBytes, 0); err != nil {
t.Fatal(err)
}
// 2) Whole-file bitrot check on corrupted file
if err := posixStorage.AppendFile(volName, fileName, []byte("a")); err != nil {
t.Fatal(err)
}
// Check if VerifyFile reports the incorrect file length (the correct length is `size+1`)
if err := posixStorage.VerifyFile(volName, fileName, size, algo, hashBytes, 0); err == nil {
t.Fatal("expected to fail bitrot check")
}
// Check if bitrot fails
if err := posixStorage.VerifyFile(volName, fileName, size+1, algo, hashBytes, 0); err == nil {
t.Fatal("expected to fail bitrot check")
}
if err := posixStorage.DeleteFile(volName, fileName); err != nil {
t.Fatal(err)
}
// 3) Streaming bitrot check on proper file
algo = HighwayHash256S
shardSize := int64(1024 * 1024)
shard := make([]byte, shardSize)
w := newStreamingBitrotWriter(posixStorage, volName, fileName, size, algo, shardSize)
reader := bytes.NewReader(data)
for {
// Using io.CopyBuffer instead of this loop will not work for us as io.CopyBuffer
// will use bytes.Buffer.ReadFrom() which will not do shardSize'ed writes causing error.
n, err := reader.Read(shard)
w.Write(shard[:n])
if err == nil {
continue
}
if err == io.EOF {
break
}
t.Fatal(err)
}
w.Close()
if err := posixStorage.VerifyFile(volName, fileName, size, algo, nil, shardSize); err != nil {
t.Fatal(err)
}
// 4) Streaming bitrot check on corrupted file
filePath := pathJoin(posixStorage.String(), volName, fileName)
f, err := os.OpenFile(filePath, os.O_WRONLY, 0644)
if err != nil {
t.Fatal(err)
}
if _, err := f.WriteString("a"); err != nil {
t.Fatal(err)
}
f.Close()
if err := posixStorage.VerifyFile(volName, fileName, size, algo, nil, shardSize); err == nil {
t.Fatal("expected to fail bitrot check")
}
if err := posixStorage.VerifyFile(volName, fileName, size+1, algo, nil, shardSize); err == nil {
t.Fatal("expected to fail bitrot check")
}
}
// Checks for restrictions for min total disk space and inodes.
func TestCheckDiskTotalMin(t *testing.T) {
testCases := []struct {
diskInfo disk.Info
err error
}{
// Test 1 - when fstype is nfs.
{
diskInfo: disk.Info{
Total: diskMinTotalSpace * 3,
FSType: "NFS",
},
err: nil,
},
// Test 2 - when fstype is xfs and total inodes are less than 10k.
{
diskInfo: disk.Info{
Total: diskMinTotalSpace * 3,
FSType: "XFS",
Files: 9999,
},
err: nil,
},
// Test 3 - when fstype is btrfs and total inodes is empty.
{
diskInfo: disk.Info{
Total: diskMinTotalSpace * 3,
FSType: "BTRFS",
Files: 0,
},
err: nil,
},
// Test 4 - when fstype is xfs and total disk space is really small.
{
diskInfo: disk.Info{
Total: diskMinTotalSpace - diskMinTotalSpace/1024,
FSType: "XFS",
Files: 9999,
},
err: errMinDiskSize,
},
}
// Validate all cases.
for i, test := range testCases {
if err := checkDiskMinTotal(test.diskInfo); test.err != err {
t.Errorf("Test %d: Expected error %s, got %s", i+1, test.err, err)
}
}
}
// Checks for restrictions for min free disk space and inodes.
func TestCheckDiskFreeMin(t *testing.T) {
testCases := []struct {
diskInfo disk.Info
err error
}{
// Test 1 - when fstype is nfs.
{
diskInfo: disk.Info{
Free: diskMinTotalSpace * 3,
FSType: "NFS",
},
err: nil,
},
// Test 2 - when fstype is xfs and total inodes are less than 10k.
{
diskInfo: disk.Info{
Free: diskMinTotalSpace * 3,
FSType: "XFS",
Files: 9999,
Ffree: 9999,
},
err: nil,
},
// Test 3 - when fstype is btrfs and total inodes are empty.
{
diskInfo: disk.Info{
Free: diskMinTotalSpace * 3,
FSType: "BTRFS",
Files: 0,
},
err: nil,
},
// Test 4 - when fstype is xfs and total disk space is really small.
{
diskInfo: disk.Info{
Free: diskMinTotalSpace - diskMinTotalSpace/1024,
FSType: "XFS",
Files: 9999,
},
err: errDiskFull,
},
}
// Validate all cases.
for i, test := range testCases {
if err := checkDiskMinFree(test.diskInfo); test.err != err {
t.Errorf("Test %d: Expected error %s, got %s", i+1, test.err, err)
}
}
}