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minio/cmd/posix_test.go

1868 lines
59 KiB

/*
* 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"
"encoding/hex"
"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},
{"/", 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.
posixStorage, err := newPosix(diskPath)
if err != nil {
return nil, "", err
}
return posixStorage, 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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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 + "/" + "minio-" + nextSuffix()
// Temporary file name.
tmpFileName := globalTestTmpDir + "/" + "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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.ioErrCount = int32(testCase.ioErrCount)
} else {
t.Errorf("Expected the StorageAPI to be of type *posix")
}
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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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 volInfo []VolInfo
// TestPosix empty list vols.
if volInfo, err = posixStorage.ListVols(); err != nil {
t.Fatalf("expected: <nil>, got: %s", err)
} else if len(volInfo) != 0 {
t.Fatalf("expected: [], got: %s", volInfo)
}
// TestPosix non-empty list vols.
if err = posixStorage.MakeVol("success-vol"); err != nil {
t.Fatalf("Unable to create volume, %s", err)
}
if volInfo, err = posixStorage.ListVols(); err != nil {
t.Fatalf("expected: <nil>, got: %s", err)
} else if len(volInfo) != 1 {
t.Fatalf("expected: 1, got: %d", len(volInfo))
} else if volInfo[0].Name != "success-vol" {
t.Errorf("expected: success-vol, got: %s", volInfo[0].Name)
}
// setting ioErrCnt to be > maxAllowedIOError.
// should fail with errFaultyDisk.
if posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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)
}
posix: do not upstream errors in deleteFile (#4771) This commit changes posix's deleteFile() to not upstream errors from removing parent directories. This fixes a race condition. The race condition occurs when multiple deleteFile()s are called on the same parent directory, but different child files. Because deleteFile() recursively removes parent directories if they are empty, but deleteFile() errors if the selected deletePath does not exist, there was an opportunity for a race condition. The two processes would remove the child directories successfully, then depend on the parent directory still existing. In some cases this is an invalid assumption, because other processes can remove the parent directory beforehand. This commit changes deleteFile() to not upstream an error if one occurs, because the only required error should be from the immediate deletePath, not from a parent path. In the specific bug report, multiple CompleteMultipartUpload requests would launch multiple deleteFile() requests. Because they chain up on parent directories, ultimately at the end, there would be multiple remove files for the ultimate parent directory, .minio.sys/multipart/{bucket}. Because only one will succeed and one will fail, an error would be upstreamed saying that the file does not exist, and the CompleteMultipartUpload code interpreted this as NoSuchKey, or that the object/part id doesn't exist. This was faulty behavior and is now fixed. The added test fails before this change and passes after this change. Fixes: https://github.com/minio/minio/issues/4727
7 years ago
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,
},
posix: do not upstream errors in deleteFile (#4771) This commit changes posix's deleteFile() to not upstream errors from removing parent directories. This fixes a race condition. The race condition occurs when multiple deleteFile()s are called on the same parent directory, but different child files. Because deleteFile() recursively removes parent directories if they are empty, but deleteFile() errors if the selected deletePath does not exist, there was an opportunity for a race condition. The two processes would remove the child directories successfully, then depend on the parent directory still existing. In some cases this is an invalid assumption, because other processes can remove the parent directory beforehand. This commit changes deleteFile() to not upstream an error if one occurs, because the only required error should be from the immediate deletePath, not from a parent path. In the specific bug report, multiple CompleteMultipartUpload requests would launch multiple deleteFile() requests. Because they chain up on parent directories, ultimately at the end, there would be multiple remove files for the ultimate parent directory, .minio.sys/multipart/{bucket}. Because only one will succeed and one will fail, an error would be upstreamed saying that the file does not exist, and the CompleteMultipartUpload code interpreted this as NoSuchKey, or that the object/part id doesn't exist. This was faulty behavior and is now fixed. The added test fails before this change and passes after this change. Fixes: https://github.com/minio/minio/issues/4727
7 years ago
// 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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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)
}
posixStorage, err = newPosix(permDeniedDir)
if err != nil {
t.Fatalf("Unable to initialize posix, %s", err)
}
// Common read buffer.
var buf = make([]byte, 10)
if _, err = posixStorage.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.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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 *posix")
}
}
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: hashMismatchError{}}, // 4
{file: "myobject", offset: 3, length: 1100, algorithm: SHA256, expError: nil}, // 5
{file: "myobject", offset: 2, length: 100, algorithm: SHA256, expError: hashMismatchError{}}, // 6
{file: "myobject", offset: 1000, length: 1001, algorithm: SHA256, expError: nil}, // 7
{file: "myobject", offset: 0, length: 100, algorithm: BLAKE2b512, expError: hashMismatchError{}}, // 8
{file: "myobject", offset: 25, length: 74, algorithm: BLAKE2b512, expError: nil}, // 9
{file: "myobject", offset: 29, length: 70, algorithm: BLAKE2b512, expError: hashMismatchError{}}, // 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 {
expected := h.Sum(nil)
h.Write([]byte{0})
test.expError = hashMismatchError{hex.EncodeToString(h.Sum(nil)), hex.EncodeToString(expected)}
}
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)
}
}
}
// 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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.ioErrCount = int32(6)
err = posixType.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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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 posixType, ok := posixStorage.(*posix); ok {
// setting the io error count from as specified in the test case.
posixType.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)
}
}
}
// 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)
}
}
}