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module Connection = Driver.Connection
let with_driver ~f database =
let open Lwt_result.Syntax in
let* () =
Logs_lwt.debug (fun m -> m "Loading the driver from the URI")
|> Lwt_result.ok
in
let* driver = Driver.load_from_uri database |> Lwt.return in
let module D = (val driver) in
let* conninfo = D.parse_uri database |> Lwt.return in
f (module D : Driver.S) conninfo
let db_version ~database =
with_driver database ~f:(fun (module Driver) conninfo ->
Driver.version ~host:conninfo.Connection.host
?port:conninfo.Connection.port ?user:conninfo.Connection.user
?password:conninfo.Connection.pass ~database:conninfo.Connection.db ()
|> Lwt_result.ok)
let fetch_version (module Driver : Driver.S) ~bound force conninfo =
let open Lwt.Syntax in
if not force then
let* result =
Driver.version ~host:conninfo.Connection.host
?port:conninfo.Connection.port ?user:conninfo.Connection.user
?password:conninfo.Connection.pass ~database:conninfo.Connection.db ()
in
match result with
| Some (version, _) -> Lwt.return_ok version
| None -> Lwt.return_ok Int64.zero
else Lwt.return_ok bound
let source_versions ~source =
let open Std.Result.Syntax in
let+ source = Source.of_string source in
Source.versions source
let up ?(force = false) ~source ~database () =
let open Lwt_result.Syntax in
let* source_versions = source_versions ~source |> Lwt.return in
with_driver database ~f:(fun (module Driver) conninfo ->
let* origin =
fetch_version ~bound:Int64.zero (module Driver) force conninfo
in
source_versions
|> List.filter (fun s -> Int64.compare s.Migration.version origin > 0)
|> List.sort (fun s1 s2 ->
Int64.compare s1.Migration.version s2.Migration.version)
|> List.fold_left
(fun acc s ->
Lwt.bind acc (fun () ->
Driver.up ~host:conninfo.Connection.host
?port:conninfo.Connection.port ?user:conninfo.Connection.user
?password:conninfo.Connection.pass
~database:conninfo.Connection.db s))
(Lwt.return ())
|> Lwt_result.ok)
let down ?(force = false) ~source ~database () =
let open Lwt_result.Syntax in
let* source_versions = source_versions ~source |> Lwt.return in
with_driver database ~f:(fun (module Driver) conninfo ->
let* origin =
fetch_version ~bound:Int64.max_int (module Driver) force conninfo
in
source_versions
|> List.filter (fun s -> Int64.compare s.Migration.version origin <= 0)
|> List.sort (fun s1 s2 ->
Int64.compare s1.Migration.version s2.Migration.version)
|> List.rev
|> List.fold_left
(fun acc s ->
Lwt.bind acc (fun () ->
Driver.down ~host:conninfo.Connection.host
?port:conninfo.Connection.port ?user:conninfo.Connection.user
?password:conninfo.Connection.pass
~database:conninfo.Connection.db s))
(Lwt.return ())
|> Lwt_result.ok)
let create ~database =
with_driver database ~f:(fun (module Driver) conninfo ->
Driver.create ~host:conninfo.Connection.host
?port:conninfo.Connection.port ?user:conninfo.Connection.user
?password:conninfo.Connection.pass conninfo.Connection.db
|> Lwt_result.ok)
let drop ~database =
with_driver database ~f:(fun (module Driver) conninfo ->
Driver.drop ~host:conninfo.Connection.host ?port:conninfo.Connection.port
?user:conninfo.Connection.user ?password:conninfo.Connection.pass
conninfo.Connection.db
|> Lwt_result.ok)
module Error = Omigrate_error
module Migration = Migration
module Driver : sig
module type S
module Connection : sig
type t = Driver.Connection.t = {
host : string;
user : string option;
pass : string option;
port : int option;
db : string;
}
end
val load : string -> ((module Driver.S), Error.t) Result.t
val load_from_uri : string -> ((module Driver.S), Error.t) Result.t
val register : string -> (module Driver.S) -> unit
val list : unit -> string list
end =
Driver