%%%-------------------------------------------------------------------
%%% File : mod_carboncopy_mnesia.erl
%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% Created : 15 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2018 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program 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
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
-module(mod_carboncopy_mnesia).
-behaviour(mod_carboncopy).
%% API
-export([init/2, enable/4, disable/3, list/2, use_cache/1]).
-include("mod_carboncopy.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
Fields = record_info(fields, carboncopy),
try mnesia:table_info(carboncopy, attributes) of
Fields ->
ok;
_ ->
%% recreate..
mnesia:delete_table(carboncopy)
catch _:_Error ->
%% probably table don't exist
ok
end,
ejabberd_mnesia:create(?MODULE, carboncopy,
[{ram_copies, [node()]},
{attributes, record_info(fields, carboncopy)},
{type, bag}]).
enable(LUser, LServer, LResource, NS) ->
mnesia:dirty_write(
#carboncopy{us = {LUser, LServer},
resource = LResource,
version = NS}).
disable(LUser, LServer, LResource) ->
ToDelete = mnesia:dirty_match_object(
#carboncopy{us = {LUser, LServer},
resource = LResource,
_ = '_'}),
lists:foreach(fun mnesia:dirty_delete_object/1, ToDelete).
list(LUser, LServer) ->
{ok, mnesia:dirty_select(
carboncopy,
[{#carboncopy{us = {LUser, LServer}, resource = '$2',
version = '$3', node = '$4'},
[], [{{'$2','$3','$4'}}]}])}.
use_cache(_LServer) ->
false.
%%%===================================================================
%%% Internal functions
%%%===================================================================
