035882d292
we will allow situations such as ``` a/b/1.txt a/b ``` and ``` a/b a/b/1.txt ``` we are going to document that this usecase is not supported and we will never support it, if any application does this users have to delete the top level parent to make sure namespace is accessible at lower level. rest of the situations where the prefixes get created across sets are supported as is.
294 lines
8.3 KiB
Go
294 lines
8.3 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"io"
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"sync"
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"time"
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)
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// naughtyDisk wraps a POSIX disk and returns programmed errors
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// specified by the developer. The purpose is to simulate errors
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// that are hard to simulate in practice like DiskNotFound.
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// Programmed errors are stored in errors field.
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type naughtyDisk struct {
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// The real disk
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disk StorageAPI
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// Programmed errors: API call number => error to return
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errors map[int]error
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// The error to return when no error value is programmed
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defaultErr error
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// The current API call number
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callNR int
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// Data protection
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mu sync.Mutex
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}
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func newNaughtyDisk(d StorageAPI, errs map[int]error, defaultErr error) *naughtyDisk {
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return &naughtyDisk{disk: d, errors: errs, defaultErr: defaultErr}
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}
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func (d *naughtyDisk) String() string {
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return d.disk.String()
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}
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func (d *naughtyDisk) IsOnline() bool {
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if err := d.calcError(); err != nil {
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return err == errDiskNotFound
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}
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return d.disk.IsOnline()
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}
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func (d *naughtyDisk) LastConn() time.Time {
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return d.disk.LastConn()
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}
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func (d *naughtyDisk) IsLocal() bool {
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return d.disk.IsLocal()
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}
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func (d *naughtyDisk) Endpoint() Endpoint {
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return d.disk.Endpoint()
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}
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func (d *naughtyDisk) Hostname() string {
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return d.disk.Hostname()
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}
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func (d *naughtyDisk) Healing() *healingTracker {
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return d.disk.Healing()
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}
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func (d *naughtyDisk) Close() (err error) {
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if err = d.calcError(); err != nil {
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return err
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}
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return d.disk.Close()
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}
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func (d *naughtyDisk) calcError() (err error) {
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d.mu.Lock()
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defer d.mu.Unlock()
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d.callNR++
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if err, ok := d.errors[d.callNR]; ok {
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return err
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}
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if d.defaultErr != nil {
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return d.defaultErr
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}
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return nil
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}
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func (d *naughtyDisk) GetDiskLoc() (poolIdx, setIdx, diskIdx int) {
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return -1, -1, -1
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}
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func (d *naughtyDisk) SetDiskLoc(poolIdx, setIdx, diskIdx int) {}
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func (d *naughtyDisk) GetDiskID() (string, error) {
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return d.disk.GetDiskID()
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}
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func (d *naughtyDisk) SetDiskID(id string) {
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d.disk.SetDiskID(id)
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}
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func (d *naughtyDisk) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry) (info dataUsageCache, err error) {
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return d.disk.NSScanner(ctx, cache, updates)
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}
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func (d *naughtyDisk) DiskInfo(ctx context.Context) (info DiskInfo, err error) {
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if err := d.calcError(); err != nil {
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return info, err
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}
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return d.disk.DiskInfo(ctx)
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}
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func (d *naughtyDisk) MakeVolBulk(ctx context.Context, volumes ...string) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.MakeVolBulk(ctx, volumes...)
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}
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func (d *naughtyDisk) MakeVol(ctx context.Context, volume string) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.MakeVol(ctx, volume)
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}
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func (d *naughtyDisk) ListVols(ctx context.Context) (vols []VolInfo, err error) {
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if err := d.calcError(); err != nil {
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return nil, err
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}
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return d.disk.ListVols(ctx)
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}
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func (d *naughtyDisk) StatVol(ctx context.Context, volume string) (vol VolInfo, err error) {
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if err := d.calcError(); err != nil {
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return VolInfo{}, err
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}
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return d.disk.StatVol(ctx, volume)
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}
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func (d *naughtyDisk) DeleteVol(ctx context.Context, volume string, forceDelete bool) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.DeleteVol(ctx, volume, forceDelete)
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}
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func (d *naughtyDisk) WalkDir(ctx context.Context, opts WalkDirOptions, wr io.Writer) error {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.WalkDir(ctx, opts, wr)
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}
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func (d *naughtyDisk) ListDir(ctx context.Context, volume, dirPath string, count int) (entries []string, err error) {
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if err := d.calcError(); err != nil {
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return []string{}, err
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}
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return d.disk.ListDir(ctx, volume, dirPath, count)
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}
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func (d *naughtyDisk) ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error) {
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if err := d.calcError(); err != nil {
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return 0, err
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}
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return d.disk.ReadFile(ctx, volume, path, offset, buf, verifier)
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}
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func (d *naughtyDisk) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) {
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if err := d.calcError(); err != nil {
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return nil, err
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}
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return d.disk.ReadFileStream(ctx, volume, path, offset, length)
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}
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func (d *naughtyDisk) CreateFile(ctx context.Context, volume, path string, size int64, reader io.Reader) error {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.CreateFile(ctx, volume, path, size, reader)
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}
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func (d *naughtyDisk) AppendFile(ctx context.Context, volume string, path string, buf []byte) error {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.AppendFile(ctx, volume, path, buf)
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}
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func (d *naughtyDisk) RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo, dstVolume, dstPath string) error {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.RenameData(ctx, srcVolume, srcPath, fi, dstVolume, dstPath)
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}
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func (d *naughtyDisk) RenameFile(ctx context.Context, srcVolume, srcPath, dstVolume, dstPath string) error {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.RenameFile(ctx, srcVolume, srcPath, dstVolume, dstPath)
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}
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func (d *naughtyDisk) CheckParts(ctx context.Context, volume string, path string, fi FileInfo) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.CheckParts(ctx, volume, path, fi)
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}
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func (d *naughtyDisk) Delete(ctx context.Context, volume string, path string, recursive bool) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.Delete(ctx, volume, path, recursive)
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}
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func (d *naughtyDisk) DeleteVersions(ctx context.Context, volume string, versions []FileInfo) []error {
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if err := d.calcError(); err != nil {
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errs := make([]error, len(versions))
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for i := range errs {
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errs[i] = err
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}
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return errs
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}
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return d.disk.DeleteVersions(ctx, volume, versions)
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}
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func (d *naughtyDisk) WriteMetadata(ctx context.Context, volume, path string, fi FileInfo) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.WriteMetadata(ctx, volume, path, fi)
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}
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func (d *naughtyDisk) UpdateMetadata(ctx context.Context, volume, path string, fi FileInfo) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.UpdateMetadata(ctx, volume, path, fi)
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}
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func (d *naughtyDisk) DeleteVersion(ctx context.Context, volume, path string, fi FileInfo, forceDelMarker bool) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.DeleteVersion(ctx, volume, path, fi, forceDelMarker)
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}
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func (d *naughtyDisk) ReadVersion(ctx context.Context, volume, path, versionID string, readData bool) (fi FileInfo, err error) {
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if err := d.calcError(); err != nil {
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return FileInfo{}, err
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}
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return d.disk.ReadVersion(ctx, volume, path, versionID, readData)
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}
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func (d *naughtyDisk) WriteAll(ctx context.Context, volume string, path string, b []byte) (err error) {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.WriteAll(ctx, volume, path, b)
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}
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func (d *naughtyDisk) ReadAll(ctx context.Context, volume string, path string) (buf []byte, err error) {
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if err := d.calcError(); err != nil {
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return nil, err
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}
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return d.disk.ReadAll(ctx, volume, path)
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}
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func (d *naughtyDisk) VerifyFile(ctx context.Context, volume, path string, fi FileInfo) error {
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if err := d.calcError(); err != nil {
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return err
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}
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return d.disk.VerifyFile(ctx, volume, path, fi)
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}
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func (d *naughtyDisk) StatInfoFile(ctx context.Context, volume, path string) (stat StatInfo, err error) {
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if err := d.calcError(); err != nil {
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return stat, err
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}
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return d.disk.StatInfoFile(ctx, volume, path)
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}
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