meta

type MetadataStorer interface {
	// RetrieveAttribute retrieves the value of a specific attribute for an object or a bucket.
	// Returns the value of the attribute, or an error if the attribute does not exist.
	RetrieveAttribute(f *os.File, bucket, object, attribute string) ([]byte, error)

	// StoreAttribute stores the value of a specific attribute for an object or a bucket.
	// If attribute already exists, new attribute should replace existing.
	// Returns an error if the operation fails.
	StoreAttribute(f *os.File, bucket, object, attribute string, value []byte) error

	// DeleteAttribute removes the value of a specific attribute for an object or a bucket.
	// Returns an error if the operation fails.
	DeleteAttribute(bucket, object, attribute string) error

	// ListAttributes lists all attributes for an object or a bucket.
	// Returns list of attribute names, or an error if the operation fails.
	ListAttributes(bucket, object string) ([]string, error)

	// DeleteAttributes removes all attributes for an object or a bucket.
	// Returns an error if the operation fails.
	DeleteAttributes(bucket, object string) error

	// RenameObject renames all stored metadata from oldObject to newObject
	// within the given bucket. This must be called whenever the data
	// directory for an object is renamed so that metadata stays in sync.
	RenameObject(bucket, oldObject, newObject string) error

	// ReplaceObject removes the attributes of an object, other than the
	// ones named in keep, when a new file replaces the object's file. This
	// must be called whenever a new file is published at an object's path
	// so that it doesn't inherit the metadata of the replaced file. The
	// attributes in keep are the ones the new file sets anyway: they are
	// overwritten instead of removed, so that they never go missing for
	// concurrent readers.
	ReplaceObject(bucket, object string, keep []string) error
}

type NoMeta struct{}

type RootDirSetter interface {
	WithRootDir(rootdir string) MetadataStorer
}

type SideCar struct {
	// contains filtered or unexported fields
}

type XattrMeta struct {
	// contains filtered or unexported fields
}