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* Copyright (C) 2006-2009 Citrix Systems Inc.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; version 2.1 only. with the special
* exception on linking described in file LICENSE.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU Lesser General Public License for more details.
(** Type-safe UUIDs.
Probably need to refactor this; UUIDs are used in two places:
+ to uniquely name things across the cluster
+ as secure session IDs
There is the additional constraint that current Xen tools use
a particular format of UUID (the 16 byte variety generated by fresh ())
Also, cookies aren't UUIDs and should be put somewhere else.
(** A 128-bit UUID. Using phantom types ('a) to achieve the requires type-safety. *)
type 'a t
(** Create a fresh UUID *)
val make_uuid : unit -> 'a t
val make_uuid_prng : unit -> 'a t
val make_uuid_urnd : unit -> 'a t
val make_uuid_rnd : unit -> 'a t
(** Create a UUID from a string. *)
val of_string : string -> 'a t
(** Marshal a UUID to a string. *)
val to_string : 'a t -> string
(** A null UUID, as if such a thing actually existed. It turns out to be
* useful though. *)
val null : 'a t
(** Deprecated alias for {! Uuid.of_string} *)
val uuid_of_string : string -> 'a t
(** Deprecated alias for {! Uuid.to_string} *)
val string_of_uuid : 'a t -> string
(** Convert an array to a UUID. *)
val uuid_of_int_array : int array -> 'a t
(** Convert a UUID to an array. *)
val int_array_of_uuid : 'a t -> int array
(** Check whether a string is a UUID. *)
val is_uuid : string -> bool
(** A 512-bit cookie. *)
type cookie
val make_cookie : unit -> cookie
val cookie_of_string : string -> cookie
val string_of_cookie : cookie -> string
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