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