mirror of
https://github.com/processone/ejabberd.git
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88 lines
2.9 KiB
Erlang
88 lines
2.9 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) 2002-2019 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,
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remove_user/2, use_cache/1]).
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-export([need_transform/1, transform/1]).
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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_only_copies, [node()]},
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{attributes, record_info(fields, last_activity)}]).
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use_cache(Host) ->
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case mnesia:table_info(last_activity, storage_type) of
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disc_only_copies ->
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mod_last_opt:use_cache(Host);
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_ ->
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false
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end.
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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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error;
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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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mnesia:dirty_write(#last_activity{us = {LUser, LServer},
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timestamp = TimeStamp,
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status = Status}).
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remove_user(LUser, LServer) ->
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US = {LUser, LServer},
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mnesia:dirty_delete({last_activity, US}).
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import(_LServer, #last_activity{} = LA) ->
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mnesia:dirty_write(LA).
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need_transform({last_activity, {U, S}, _, Status})
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when is_list(U) orelse is_list(S) orelse is_list(Status) ->
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?INFO_MSG("Mnesia table 'last_activity' will be converted to binary", []),
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true;
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need_transform(_) ->
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false.
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transform(#last_activity{us = {U, S}, status = Status} = R) ->
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R#last_activity{us = {iolist_to_binary(U), iolist_to_binary(S)},
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status = iolist_to_binary(Status)}.
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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