90 lines
3.1 KiB
Erlang
90 lines
3.1 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% File : mod_last_mnesia.erl
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%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2016 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%----------------------------------------------------------------------
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-module(mod_last_mnesia).
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-behaviour(mod_last).
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%% API
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-export([init/2, import/2, get_last/2, store_last_info/4, remove_user/2]).
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-include("mod_last.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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ejabberd_mnesia:create(?MODULE, last_activity,
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[{disc_copies, [node()]},
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{attributes,
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record_info(fields, last_activity)}]),
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update_table().
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get_last(LUser, LServer) ->
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case mnesia:dirty_read(last_activity, {LUser, LServer}) of
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[] ->
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not_found;
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[#last_activity{timestamp = TimeStamp,
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status = Status}] ->
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{ok, TimeStamp, Status}
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end.
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store_last_info(LUser, LServer, TimeStamp, Status) ->
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US = {LUser, LServer},
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F = fun () ->
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mnesia:write(#last_activity{us = US,
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timestamp = TimeStamp,
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status = Status})
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end,
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mnesia:transaction(F).
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remove_user(LUser, LServer) ->
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US = {LUser, LServer},
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F = fun () -> mnesia:delete({last_activity, US}) end,
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mnesia:transaction(F).
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import(_LServer, #last_activity{} = LA) ->
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mnesia:dirty_write(LA).
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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, last_activity),
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case mnesia:table_info(last_activity, attributes) of
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Fields ->
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ejabberd_config:convert_table_to_binary(
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last_activity, Fields, set,
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fun(#last_activity{us = {U, _}}) -> U end,
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fun(#last_activity{us = {U, S}, status = Status} = R) ->
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R#last_activity{us = {iolist_to_binary(U),
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iolist_to_binary(S)},
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status = iolist_to_binary(Status)}
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end);
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_ ->
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?INFO_MSG("Recreating last_activity table", []),
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mnesia:transform_table(last_activity, ignore, Fields)
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end.
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