rename filer2 to filer
This commit is contained in:
Chris Lu
208
weed/filer/filerstore.go
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208
weed/filer/filerstore.go
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@@ -0,0 +1,208 @@
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package filer
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import (
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"context"
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"strings"
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"time"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/stats"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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type FilerStore interface {
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// GetName gets the name to locate the configuration in filer.toml file
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GetName() string
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// Initialize initializes the file store
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Initialize(configuration util.Configuration, prefix string) error
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InsertEntry(context.Context, *Entry) error
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UpdateEntry(context.Context, *Entry) (err error)
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// err == filer2.ErrNotFound if not found
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FindEntry(context.Context, util.FullPath) (entry *Entry, err error)
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DeleteEntry(context.Context, util.FullPath) (err error)
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DeleteFolderChildren(context.Context, util.FullPath) (err error)
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ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int) ([]*Entry, error)
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ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int, prefix string) ([]*Entry, error)
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BeginTransaction(ctx context.Context) (context.Context, error)
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CommitTransaction(ctx context.Context) error
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RollbackTransaction(ctx context.Context) error
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Shutdown()
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}
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type FilerLocalStore interface {
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UpdateOffset(filer string, lastTsNs int64) error
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ReadOffset(filer string) (lastTsNs int64, err error)
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}
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type FilerStoreWrapper struct {
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ActualStore FilerStore
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}
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func NewFilerStoreWrapper(store FilerStore) *FilerStoreWrapper {
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if innerStore, ok := store.(*FilerStoreWrapper); ok {
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return innerStore
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}
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return &FilerStoreWrapper{
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ActualStore: store,
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}
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}
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func (fsw *FilerStoreWrapper) GetName() string {
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return fsw.ActualStore.GetName()
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}
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func (fsw *FilerStoreWrapper) Initialize(configuration util.Configuration, prefix string) error {
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return fsw.ActualStore.Initialize(configuration, prefix)
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}
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func (fsw *FilerStoreWrapper) InsertEntry(ctx context.Context, entry *Entry) error {
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stats.FilerStoreCounter.WithLabelValues(fsw.ActualStore.GetName(), "insert").Inc()
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start := time.Now()
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defer func() {
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stats.FilerStoreHistogram.WithLabelValues(fsw.ActualStore.GetName(), "insert").Observe(time.Since(start).Seconds())
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}()
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filer_pb.BeforeEntrySerialization(entry.Chunks)
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if entry.Mime == "application/octet-stream" {
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entry.Mime = ""
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}
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return fsw.ActualStore.InsertEntry(ctx, entry)
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}
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func (fsw *FilerStoreWrapper) UpdateEntry(ctx context.Context, entry *Entry) error {
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stats.FilerStoreCounter.WithLabelValues(fsw.ActualStore.GetName(), "update").Inc()
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start := time.Now()
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defer func() {
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stats.FilerStoreHistogram.WithLabelValues(fsw.ActualStore.GetName(), "update").Observe(time.Since(start).Seconds())
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}()
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filer_pb.BeforeEntrySerialization(entry.Chunks)
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if entry.Mime == "application/octet-stream" {
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entry.Mime = ""
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}
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return fsw.ActualStore.UpdateEntry(ctx, entry)
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}
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func (fsw *FilerStoreWrapper) FindEntry(ctx context.Context, fp util.FullPath) (entry *Entry, err error) {
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stats.FilerStoreCounter.WithLabelValues(fsw.ActualStore.GetName(), "find").Inc()
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start := time.Now()
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defer func() {
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stats.FilerStoreHistogram.WithLabelValues(fsw.ActualStore.GetName(), "find").Observe(time.Since(start).Seconds())
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}()
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entry, err = fsw.ActualStore.FindEntry(ctx, fp)
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if err != nil {
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return nil, err
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}
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filer_pb.AfterEntryDeserialization(entry.Chunks)
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return
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}
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func (fsw *FilerStoreWrapper) DeleteEntry(ctx context.Context, fp util.FullPath) (err error) {
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stats.FilerStoreCounter.WithLabelValues(fsw.ActualStore.GetName(), "delete").Inc()
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start := time.Now()
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defer func() {
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stats.FilerStoreHistogram.WithLabelValues(fsw.ActualStore.GetName(), "delete").Observe(time.Since(start).Seconds())
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}()
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return fsw.ActualStore.DeleteEntry(ctx, fp)
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}
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func (fsw *FilerStoreWrapper) DeleteFolderChildren(ctx context.Context, fp util.FullPath) (err error) {
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stats.FilerStoreCounter.WithLabelValues(fsw.ActualStore.GetName(), "deleteFolderChildren").Inc()
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start := time.Now()
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defer func() {
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stats.FilerStoreHistogram.WithLabelValues(fsw.ActualStore.GetName(), "deleteFolderChildren").Observe(time.Since(start).Seconds())
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}()
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return fsw.ActualStore.DeleteFolderChildren(ctx, fp)
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}
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func (fsw *FilerStoreWrapper) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int) ([]*Entry, error) {
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stats.FilerStoreCounter.WithLabelValues(fsw.ActualStore.GetName(), "list").Inc()
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start := time.Now()
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defer func() {
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stats.FilerStoreHistogram.WithLabelValues(fsw.ActualStore.GetName(), "list").Observe(time.Since(start).Seconds())
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}()
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entries, err := fsw.ActualStore.ListDirectoryEntries(ctx, dirPath, startFileName, includeStartFile, limit)
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if err != nil {
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return nil, err
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}
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for _, entry := range entries {
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filer_pb.AfterEntryDeserialization(entry.Chunks)
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}
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return entries, err
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}
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func (fsw *FilerStoreWrapper) ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int, prefix string) ([]*Entry, error) {
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stats.FilerStoreCounter.WithLabelValues(fsw.ActualStore.GetName(), "prefixList").Inc()
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start := time.Now()
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defer func() {
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stats.FilerStoreHistogram.WithLabelValues(fsw.ActualStore.GetName(), "prefixList").Observe(time.Since(start).Seconds())
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}()
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entries, err := fsw.ActualStore.ListDirectoryPrefixedEntries(ctx, dirPath, startFileName, includeStartFile, limit, prefix)
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if err == ErrUnsupportedListDirectoryPrefixed {
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entries, err = fsw.prefixFilterEntries(ctx, dirPath, startFileName, includeStartFile, limit, prefix)
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}
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if err != nil {
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return nil, err
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}
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for _, entry := range entries {
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filer_pb.AfterEntryDeserialization(entry.Chunks)
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}
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return entries, nil
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}
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func (fsw *FilerStoreWrapper) prefixFilterEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int, prefix string) (entries []*Entry, err error) {
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entries, err = fsw.ActualStore.ListDirectoryEntries(ctx, dirPath, startFileName, includeStartFile, limit)
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if err != nil {
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return nil, err
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}
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if prefix == "" {
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return
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}
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count := 0
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var lastFileName string
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notPrefixed := entries
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entries = nil
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for count < limit && len(notPrefixed) > 0 {
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for _, entry := range notPrefixed {
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lastFileName = entry.Name()
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if strings.HasPrefix(entry.Name(), prefix) {
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count++
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entries = append(entries, entry)
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if count >= limit {
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break
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}
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}
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}
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if count < limit {
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notPrefixed, err = fsw.ActualStore.ListDirectoryEntries(ctx, dirPath, lastFileName, false, limit)
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if err != nil {
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return
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}
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}
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}
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return
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}
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func (fsw *FilerStoreWrapper) BeginTransaction(ctx context.Context) (context.Context, error) {
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return fsw.ActualStore.BeginTransaction(ctx)
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}
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func (fsw *FilerStoreWrapper) CommitTransaction(ctx context.Context) error {
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return fsw.ActualStore.CommitTransaction(ctx)
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}
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func (fsw *FilerStoreWrapper) RollbackTransaction(ctx context.Context) error {
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return fsw.ActualStore.RollbackTransaction(ctx)
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}
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func (fsw *FilerStoreWrapper) Shutdown() {
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fsw.ActualStore.Shutdown()
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}
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