2016-04-14 09:58:32 +02:00
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%%%-------------------------------------------------------------------
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2016-12-27 10:44:07 +01:00
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%%% File : mod_roster_mnesia.erl
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%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
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2016-04-14 09:58:32 +02:00
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%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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2016-12-27 10:44:07 +01:00
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%%%
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%%%
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2017-01-02 21:41:53 +01:00
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%%% ejabberd, Copyright (C) 2002-2017 ProcessOne
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2016-12-27 10:44:07 +01:00
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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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2016-04-14 09:58:32 +02:00
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-module(mod_roster_mnesia).
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-behaviour(mod_roster).
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%% API
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-export([init/2, read_roster_version/2, write_roster_version/4,
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2017-05-17 13:47:35 +02:00
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get_roster/2, get_roster_item/3, roster_subscribe/4,
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2016-04-14 09:58:32 +02:00
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remove_user/2, update_roster/4, del_roster/3, transaction/2,
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2017-05-17 13:47:35 +02:00
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read_subscription_and_groups/3, import/3, create_roster/1,
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use_cache/2]).
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2017-04-23 15:37:58 +02:00
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-export([need_transform/1, transform/1]).
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2016-04-14 09:58:32 +02:00
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-include("mod_roster.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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2016-11-30 11:09:17 +01:00
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ejabberd_mnesia:create(?MODULE, roster,
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[{disc_only_copies, [node()]},
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2017-01-17 15:05:14 +01:00
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{attributes, record_info(fields, roster)},
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{index, [us]}]),
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2016-11-30 11:09:17 +01:00
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ejabberd_mnesia:create(?MODULE, roster_version,
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[{disc_only_copies, [node()]},
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{attributes,
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record_info(fields, roster_version)}]).
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2017-05-17 13:47:35 +02:00
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use_cache(Host, Table) ->
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case mnesia:table_info(Table, storage_type) of
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disc_only_copies ->
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gen_mod:get_module_opt(
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2017-05-18 11:09:28 +02:00
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Host, mod_roster, use_cache,
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ejabberd_config:use_cache(Host));
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_ ->
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false
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end.
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read_roster_version(LUser, LServer) ->
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US = {LUser, LServer},
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case mnesia:dirty_read(roster_version, US) of
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[#roster_version{version = V}] -> {ok, V};
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[] -> error
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end.
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write_roster_version(LUser, LServer, InTransaction, Ver) ->
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US = {LUser, LServer},
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if InTransaction ->
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mnesia:write(#roster_version{us = US, version = Ver});
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true ->
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mnesia:dirty_write(#roster_version{us = US, version = Ver})
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end.
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get_roster(LUser, LServer) ->
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{ok, mnesia:dirty_index_read(roster, {LUser, LServer}, #roster.us)}.
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get_roster_item(LUser, LServer, LJID) ->
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case mnesia:read({roster, {LUser, LServer, LJID}}) of
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[I] -> {ok, I};
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[] -> error
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end.
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roster_subscribe(_LUser, _LServer, _LJID, Item) ->
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mnesia:write(Item).
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remove_user(LUser, LServer) ->
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US = {LUser, LServer},
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F = fun () ->
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lists:foreach(
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fun (R) -> mnesia:delete_object(R) end,
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mnesia:index_read(roster, US, #roster.us))
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end,
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mnesia:transaction(F).
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update_roster(_LUser, _LServer, _LJID, Item) ->
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mnesia:write(Item).
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del_roster(LUser, LServer, LJID) ->
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mnesia:delete({roster, {LUser, LServer, LJID}}).
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read_subscription_and_groups(LUser, LServer, LJID) ->
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case mnesia:dirty_read(roster, {LUser, LServer, LJID}) of
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[#roster{subscription = Subscription, groups = Groups}] ->
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{ok, {Subscription, Groups}};
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_ ->
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error
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end.
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transaction(_LServer, F) ->
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mnesia:transaction(F).
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2016-11-22 14:48:01 +01:00
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create_roster(RItem) ->
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mnesia:dirty_write(RItem).
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import(_LServer, <<"rosterusers">>, #roster{} = R) ->
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mnesia:dirty_write(R);
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import(LServer, <<"roster_version">>, [LUser, Ver]) ->
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RV = #roster_version{us = {LUser, LServer}, version = Ver},
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mnesia:dirty_write(RV).
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2017-04-23 15:37:58 +02:00
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need_transform(#roster{usj = {U, S, _}}) when is_list(U) orelse is_list(S) ->
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?INFO_MSG("Mnesia table 'roster' will be converted to binary", []),
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true;
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need_transform(#roster_version{us = {U, S}, version = Ver})
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when is_list(U) orelse is_list(S) orelse is_list(Ver) ->
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?INFO_MSG("Mnesia table 'roster_version' 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(#roster{usj = {U, S, {LU, LS, LR}},
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us = {U1, S1},
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jid = {U2, S2, R2},
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name = Name,
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groups = Gs,
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askmessage = Ask,
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xs = Xs} = R) ->
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R#roster{usj = {iolist_to_binary(U), iolist_to_binary(S),
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{iolist_to_binary(LU),
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iolist_to_binary(LS),
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iolist_to_binary(LR)}},
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us = {iolist_to_binary(U1), iolist_to_binary(S1)},
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jid = {iolist_to_binary(U2),
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iolist_to_binary(S2),
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iolist_to_binary(R2)},
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name = iolist_to_binary(Name),
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groups = [iolist_to_binary(G) || G <- Gs],
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askmessage = try iolist_to_binary(Ask)
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catch _:_ -> <<"">> end,
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xs = [fxml:to_xmlel(X) || X <- Xs]};
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transform(#roster_version{us = {U, S}, version = Ver} = R) ->
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R#roster_version{us = {iolist_to_binary(U), iolist_to_binary(S)},
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version = iolist_to_binary(Ver)}.
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2016-04-14 09:58:32 +02:00
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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