package filer import ( "context" "errors" "github.com/chrislusf/seaweedfs/weed/util" ) var ( ErrUnsupportedListDirectoryPrefixed = errors.New("unsupported directory prefix listing") ErrUnsupportedSuperLargeDirectoryListing = errors.New("unsupported super large directory listing") ErrKvNotImplemented = errors.New("kv not implemented yet") ErrKvNotFound = errors.New("kv: not found") ) type ListEachEntryFunc func(entry *Entry) bool type FilerStore interface { // GetName gets the name to locate the configuration in filer.toml file GetName() string // Initialize initializes the file store Initialize(configuration util.Configuration, prefix string) error InsertEntry(context.Context, *Entry) error UpdateEntry(context.Context, *Entry) (err error) // err == filer_pb.ErrNotFound if not found FindEntry(context.Context, util.FullPath) (entry *Entry, err error) DeleteEntry(context.Context, util.FullPath) (err error) DeleteFolderChildren(context.Context, util.FullPath) (err error) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc ListEachEntryFunc) (lastFileName string, err error) ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc ListEachEntryFunc) (lastFileName string, err error) BeginTransaction(ctx context.Context) (context.Context, error) CommitTransaction(ctx context.Context) error RollbackTransaction(ctx context.Context) error KvPut(ctx context.Context, key []byte, value []byte) (err error) KvGet(ctx context.Context, key []byte) (value []byte, err error) KvDelete(ctx context.Context, key []byte) (err error) Shutdown() } type BucketAware interface { OnBucketCreation(bucket string) OnBucketDeletion(bucket string) CanDropWholeBucket() bool }