Module Storage.FilesystemStore

An Lwt-aware local filesystem storage backend for a Zarr V3 hierarchy.

include Zarr.Storage.S with type 'a io := 'a Lwt.t
type t

The storage type.

module Group : sig ... end
module Array : sig ... end
val hierarchy : t -> (Zarr.Node.Array.t list * Zarr.Node.Group.t list) Lwt.t

hierarchy t returns p where p is a pair of lists representing all nodes in store t. The first element of the pair is a list of all array nodes, and the second element is a list of all group nodes. This operation returns a pair of empty lists if store t is empty.

  • raises Parse_error

    if any node has invalid node_type metadata.

val clear : t -> unit Lwt.t

clear t clears the store t by deleting all nodes. If the store is already empty, this is a no-op.

val create : ?perm:Unix.file_perm -> string -> t

create ~perm dir returns a new filesystem store.

  • raises Failure

    if dir is a directory that already exists.

val open_store : ?perm:Unix.file_perm -> string -> t

open_store ~perm dir returns an existing filesystem Zarr store.

  • raises Failure

    if dir is not a Zarr store path.