mte/unikernel/duniverse/ocaml-caqti/caqti/lib-blocking/caqti_blocking.mli

45 lines
1.9 KiB
OCaml
Raw Normal View History

2025-11-11 02:07:51 +01:00
(* Copyright (C) 2018--2023 Petter A. Urkedal <paurkedal@gmail.com>
*
* This library 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, either version 3 of the License, or (at your
* option) any later version, with the LGPL-3.0 Linking Exception.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* and the LGPL-3.0 Linking Exception along with this library. If not, see
* <http://www.gnu.org/licenses/> and <https://spdx.org>, respectively.
*)
(** Blocking API based on the Unix module.
This module implements a blocking API. It is not designed for preemptive
threading. That is, connections and connection pools must be created and
used within a single thread, and any limitation on multithreading from the
driver or client library applies.
You can use a connection pool to cache a single DB connection, additional
connections will not be allocated, since usage is serial. *)
module Stream : Caqti_stream_sig.S with type 'a fiber := 'a
module Pool : Caqti_pool_sig.S with type 'a fiber := 'a
module type CONNECTION = Caqti_connection_sig.S
with type 'a fiber := 'a
and type ('a, 'e) stream := ('a, 'e) Stream.t
include Caqti_connect_sig.S
with type 'a fiber := 'a
and type 'a with_switch := 'a
and type 'a with_stdenv := 'a
and type ('a, 'e) stream := ('a, 'e) Stream.t
and type ('a, 'e) pool := ('a, 'e) Pool.t
and type connection = (module CONNECTION)
val or_fail : ('a, [< Caqti_error.t]) result -> 'a
(** Takes [Ok x] to [x] and raises {!Caqti_error.Exn}[ err] on [Error err]. *)