mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-08-20 00:30:52 +02:00
159 lines
4.7 KiB
Go
159 lines
4.7 KiB
Go
package filer
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import (
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"context"
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"github.com/chrislusf/seaweedfs/weed/util"
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"math"
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"strings"
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)
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var (
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_ = FilerStore(&FilerStorePathTranlator{})
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)
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type FilerStorePathTranlator struct {
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actualStore FilerStore
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storeRoot string
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}
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func NewFilerStorePathTranlator(storeRoot string, store FilerStore) *FilerStorePathTranlator {
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if innerStore, ok := store.(*FilerStorePathTranlator); ok {
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return innerStore
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}
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if !strings.HasSuffix(storeRoot, "/") {
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storeRoot += "/"
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}
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return &FilerStorePathTranlator{
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actualStore: store,
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storeRoot: storeRoot,
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}
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}
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func (t *FilerStorePathTranlator) translatePath(fp util.FullPath) (newPath util.FullPath) {
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newPath = fp
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if t.storeRoot == "/" {
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return
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}
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newPath = fp[len(t.storeRoot)-1:]
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if newPath == "" {
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newPath = "/"
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}
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return
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}
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func (t *FilerStorePathTranlator) changeEntryPath(entry *Entry) (previousPath util.FullPath) {
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previousPath = entry.FullPath
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if t.storeRoot == "/" {
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return
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}
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entry.FullPath = t.translatePath(previousPath)
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return
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}
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func (t *FilerStorePathTranlator) recoverEntryPath(entry *Entry, previousPath util.FullPath) {
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entry.FullPath = previousPath
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}
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func (t *FilerStorePathTranlator) GetName() string {
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return t.actualStore.GetName()
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}
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func (t *FilerStorePathTranlator) Initialize(configuration util.Configuration, prefix string) error {
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return t.actualStore.Initialize(configuration, prefix)
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}
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func (t *FilerStorePathTranlator) InsertEntry(ctx context.Context, entry *Entry) error {
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previousPath := t.changeEntryPath(entry)
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defer t.recoverEntryPath(entry, previousPath)
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return t.actualStore.InsertEntry(ctx, entry)
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}
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func (t *FilerStorePathTranlator) UpdateEntry(ctx context.Context, entry *Entry) error {
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previousPath := t.changeEntryPath(entry)
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defer t.recoverEntryPath(entry, previousPath)
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return t.actualStore.UpdateEntry(ctx, entry)
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}
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func (t *FilerStorePathTranlator) FindEntry(ctx context.Context, fp util.FullPath) (entry *Entry, err error) {
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if t.storeRoot == "/" {
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return t.actualStore.FindEntry(ctx, fp)
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}
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newFullPath := t.translatePath(fp)
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entry, err = t.actualStore.FindEntry(ctx, newFullPath)
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if err == nil {
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entry.FullPath = fp[:len(t.storeRoot)-1] + entry.FullPath
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}
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return
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}
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func (t *FilerStorePathTranlator) DeleteEntry(ctx context.Context, fp util.FullPath) (err error) {
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newFullPath := t.translatePath(fp)
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return t.actualStore.DeleteEntry(ctx, newFullPath)
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}
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func (t *FilerStorePathTranlator) DeleteOneEntry(ctx context.Context, existingEntry *Entry) (err error) {
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previousPath := t.changeEntryPath(existingEntry)
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defer t.recoverEntryPath(existingEntry, previousPath)
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return t.actualStore.DeleteEntry(ctx, existingEntry.FullPath)
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}
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func (t *FilerStorePathTranlator) DeleteFolderChildren(ctx context.Context, fp util.FullPath) (err error) {
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newFullPath := t.translatePath(fp)
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return t.actualStore.DeleteFolderChildren(ctx, newFullPath)
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}
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func (t *FilerStorePathTranlator) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc ListEachEntryFunc) (string, error) {
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newFullPath := t.translatePath(dirPath)
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return t.actualStore.ListDirectoryEntries(ctx, newFullPath, startFileName, includeStartFile, limit, func(entry *Entry) bool {
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entry.FullPath = dirPath[:len(t.storeRoot)-1] + entry.FullPath
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return eachEntryFunc(entry)
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})
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}
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func (t *FilerStorePathTranlator) ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc ListEachEntryFunc) (string, error) {
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newFullPath := t.translatePath(dirPath)
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if limit > math.MaxInt32-1 {
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limit = math.MaxInt32 - 1
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}
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return t.actualStore.ListDirectoryPrefixedEntries(ctx, newFullPath, startFileName, includeStartFile, limit, prefix, func(entry *Entry) bool {
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entry.FullPath = dirPath[:len(t.storeRoot)-1] + entry.FullPath
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return eachEntryFunc(entry)
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})
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}
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func (t *FilerStorePathTranlator) BeginTransaction(ctx context.Context) (context.Context, error) {
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return t.actualStore.BeginTransaction(ctx)
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}
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func (t *FilerStorePathTranlator) CommitTransaction(ctx context.Context) error {
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return t.actualStore.CommitTransaction(ctx)
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}
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func (t *FilerStorePathTranlator) RollbackTransaction(ctx context.Context) error {
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return t.actualStore.RollbackTransaction(ctx)
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}
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func (t *FilerStorePathTranlator) Shutdown() {
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t.actualStore.Shutdown()
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}
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func (t *FilerStorePathTranlator) KvPut(ctx context.Context, key []byte, value []byte) (err error) {
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return t.actualStore.KvPut(ctx, key, value)
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}
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func (t *FilerStorePathTranlator) KvGet(ctx context.Context, key []byte) (value []byte, err error) {
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return t.actualStore.KvGet(ctx, key)
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}
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func (t *FilerStorePathTranlator) KvDelete(ctx context.Context, key []byte) (err error) {
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return t.actualStore.KvDelete(ctx, key)
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}
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