dentry

type File interface {
	GetAttr() types.OpenAttr
	WriteAt(ctx context.Context, data []byte, off int64) (int64, error)
	ReadAt(ctx context.Context, dest []byte, off int64) (int64, error)
	Fsync(ctx context.Context) error
	Flush(ctx context.Context) error
	Close(ctx context.Context) (err error)
}

type Group interface {
	FindEntry(ctx context.Context, name string) (*types.Metadata, error)
	CreateEntry(ctx context.Context, attr types.EntryAttr) (*types.Metadata, error)
	UpdateEntry(ctx context.Context, entry *types.Metadata) error
	RemoveEntry(ctx context.Context, entryID int64) error
	ListChildren(ctx context.Context) ([]*types.Metadata, error)
}

type Manager interface {
	Root(ctx context.Context) (*types.Metadata, error)

	GetEntry(ctx context.Context, id int64) (*types.Metadata, error)
	GetEntryByUri(ctx context.Context, uri string) (*types.Metadata, error)
	CreateEntry(ctx context.Context, parentId int64, attr types.EntryAttr) (*types.Metadata, error)
	RemoveEntry(ctx context.Context, parentId, entryId int64) error
	DestroyEntry(ctx context.Context, entryId int64) error
	CleanEntryData(ctx context.Context, entryId int64) error
	MirrorEntry(ctx context.Context, srcId, dstParentId int64, attr types.EntryAttr) (*types.Metadata, error)
	ChangeEntryParent(ctx context.Context, targetEntryId int64, overwriteEntryId *int64, oldParentId, newParentId int64, newName string, opt types.ChangeParentAttr) error

	GetEntryExtendData(ctx context.Context, id int64) (types.ExtendData, error)
	UpdateEntryExtendData(ctx context.Context, id int64, ed types.ExtendData) error
	GetEntryExtendField(ctx context.Context, id int64, fKey string) (*string, bool, error)
	SetEntryExtendField(ctx context.Context, id int64, fKey, fVal string, encoded bool) error
	RemoveEntryExtendField(ctx context.Context, id int64, fKey string) error
	GetEntryLabels(ctx context.Context, id int64) (types.Labels, error)
	UpdateEntryLabels(ctx context.Context, id int64, labels types.Labels) error

	Open(ctx context.Context, entryId int64, attr types.OpenAttr) (File, error)
	OpenGroup(ctx context.Context, entryID int64) (Group, error)
	ChunkCompact(ctx context.Context, entryId int64) error

	MustCloseAll()
}