%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_caps_mnesia).
-behaviour(mod_caps).
%% API
-export([init/2, caps_read/2, caps_write/3]).
-include("mod_caps.hrl").
-include("logger.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
case catch mnesia:table_info(caps_features, storage_type) of
{'EXIT', _} ->
ok;
disc_only_copies ->
ok;
_ ->
mnesia:delete_table(caps_features)
end,
mnesia:create_table(caps_features,
[{disc_only_copies, [node()]},
{local_content, true},
{attributes,
record_info(fields, caps_features)}]),
update_table(),
mnesia:add_table_copy(caps_features, node(),
disc_only_copies).
caps_read(_LServer, Node) ->
case mnesia:dirty_read({caps_features, Node}) of
[#caps_features{features = Features}] -> {ok, Features};
_ -> error
end.
caps_write(_LServer, Node, Features) ->
mnesia:dirty_write(#caps_features{node_pair = Node,
features = Features}).
%%%===================================================================
%%% Internal functions
%%%===================================================================
update_table() ->
Fields = record_info(fields, caps_features),
case mnesia:table_info(caps_features, attributes) of
Fields ->
ejabberd_config:convert_table_to_binary(
caps_features, Fields, set,
fun(#caps_features{node_pair = {N, _}}) -> N end,
fun(#caps_features{node_pair = {N, P},
features = Fs} = R) ->
NewFs = if is_integer(Fs) ->
Fs;
true ->
[iolist_to_binary(F) || F <- Fs]
end,
R#caps_features{node_pair = {iolist_to_binary(N),
iolist_to_binary(P)},
features = NewFs}
end);
_ ->
?INFO_MSG("Recreating caps_features table", []),
mnesia:transform_table(caps_features, ignore, Fields)
end.
